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| 1 | Seasonal Rainfall Forecasts for the Yangtze River Basin of China in Summer 2019 from an Improved Climate Service显示文摘Rainfall forecasts for the summer monsoon season in the Yangtze River basin(YRB) allow decision-makers to plan for possible flooding, which can affect the lives and livelihoods of millions of people. A trial climate service was developed in 2016, producing a prototype seasonal forecast product for use by stakeholders in the region, based on rainfall forecasts directly from a dynamical model. Here, we describe an improved service based on a simple statistical downscaling approach. Through using dynamical forecast of an East Asian summer monsoon(EASM) index, seasonal mean rainfall for the upper and middle/lower reaches of YRB can be forecast separately by use of the statistical downscaling, with significant skills for lead times of up to at least three months. The skill in different sub-basin regions of YRB varies with the target season. The rainfall forecast skill in the middle/lower reaches of YRB is significant in May–June–July(MJJ), and the forecast skill for rainfall in the upper reaches of YRB is significant in June–July–August(JJA). The mean rainfall for the basin as a whole can be skillfully forecast in both MJJ and JJA. The forecasts issued in 2019 gave good guidance for the enhanced rainfall in the MJJ period and the near-average conditions in JJA. Initial feedback from users in the basin suggests that the improved forecasts better meet their needs and will enable more robust decision-making. | Philip E.BETT Nicola MARTIN Adam A.SCAIFE Nick DUNSTONE Gill M.MARTIN Nicola GOLDING Joanne CAMP Peiqun ZHANG Chris D.HEWITT Leon HERMANSON Chaofan LI Hong-Li REN Ying LIU Min LIU | 2020 | Journal of Meteorological Research2020，34，5： | 7 |
| 2 | Robust superhydrophobic polyurethane sponge functionalized with perfluorinated graphene oxide for efficient immiscible oil/water mixture, stable emulsion separation and crude oil dehydration显示文摘In recent years, graphene oxide(GO), prepared by the modified Hummers’ method, and its derivatives have become a focus of research owing to their outstanding physical and chemical properties and low cost. Drawing inspiration from the mussel protein,a facile and environmentally-friendly method was employed to fabricate superhydrophobic/superoleophilic reduced graphene oxide(rGO) derivative. The preparation comprises two steps: coating GO nanosheets with polydopamine(PDA) and subsequent reaction with 1H,1H,2H,2H-perfluorodecanethiol. Due to the excellent adhesive ability of PDA, the resulting f PDA modified rGO nanosheets(rGO-f PDA) were firmly immobilized onto polyurethane(PU) sponge skeleton by a simple drop-coating method. The as-prepared rGO-f PDA functionalized sponge exhibited superhydrophobic behavior with a water contact angle of 162°±2°, high organic adsorption capacity, recyclability and stable oil/water separation behavior under different acidic/alkaline conditions. Due to its facile fabrication technique and outstanding properties, the superhydrophobic-superoleophilic PU-rGOf PDA sponge holds great promise as an oil adsorbent for cleaning up large-scale pollution of oil and organic solvents, and dehydrating crude oil. | CAO Ning GUO JingYu BOUKHERROUB Rabah SHAO QingGuo ZANG XiaoBei LI Jin LIN XueQiang JU Hong LIU EnYang ZHOU ChaoFan LI HuiPing | 2019 | Science China(Technological Sciences)2019，62，9： | 6 |
| 3 | Light absorption properties and potential sources of brown carbon in Fenwei Plain during winter 2018–2019显示文摘A distinctive kind of organic carbon aerosol that could absorb ultraviolet-visible radiation is called brown carbon(Br C),which has an important positive influence on radiative budget and climate change.In this work,we reported the absorption properties and potential source of Br C based on a seven-wavelength aethalometer in the winter of 2018–2019 at an urban site of Sanmenxia in Fenwei Plain in central China.Specifically,the mean value of Br C absorption coefficient was 59.6±36.0 Mm^(-1) at 370 nm and contributed 37.7%to total absorption,which made a significant impact on visibility and regional environment.Absorption coefficients of Br C showed double-peak pattern,and Br C had shown small fluctuations under haze days compared with clean days.As for the sources of Br C,Br C absorption coefficients expressed strong correlations with element carbon aerosols and primary organic carbon aerosols,indicating that most of Br C originated from primary emissions.The linear correlations between trace metal elements(K,As,Fe,Mn,Zn,and Pb)and Br C absorption coefficients further referred that the major sources of Br C were primary emissions,like coal burning,biomass burning,and vehicle emissions.The moderate relationship between Br C absorption coefficients and secondary organic aerosols suggested that secondary production of Br C also played an important role.The 120 hr backward air mass trajectories analysis and concentration-weighted trajectories analysis were also used to investigate potential sources of Br C in and around this area,which inferred most parts of Br C were derived from local emissions. | Wenyu Zhang Weigang Wang Jie Li Shuangliang Ma Chaofan Lian Kun Li Bo Shi Mingyuan Liu Yanyu Li QingQing Wang Yele Sun Shengrui Tong Maofa Ge | 2021 | Journal of Environmental Sciences2021，33，4： | 6 |
| 4 | Continuous and comprehensive atmospheric observations in Beijing:a station to understand the complex urban atmospheric environment显示文摘Due to profound impact on climate and human health,air quality has attracted attention from all levels of the civil society.The key step in the provision of required tools for the society to tackle the complex air quality problem is to characterize it in a comprehensive manner with a long-term perspective.Here,we describe a continuous and comprehensive observation station and its accompanying state-ofthe-art instrumentation that was established to investigate the complex urban atmospheric environment in a rapidly developing Chinese Megacity.The station,located in downtown Beijing,aims to study air quality by identifying the major atmospheric pollutants and key processes determining their formation and loss mechanisms.A few hundreds of parameters are continuously measured with the state-of-the-art instruments,including trace gas concentrations,aerosol particle size distributions,and mass concentrations,covering aerosol particle chemical composition from molecules to micrometer-sized aerosol particles.This produced long-term,comprehensive big data with around 1�10^(11)bytes per year.In this paper,we provide an overview on the facilities of the station,the instrumentation used,the workflow of continuous observations and examples of results from 2018 to 2019 and a basis for establishing a modern long-term,comprehensive atmospheric urban observation station in other megacities. | Yongchun Liu Chao Yan Zemin Feng Feixue Zheng Xiaolong Fan Yusheng Zhang Chang Li Ying Zhou Zhuohui Lin Yishou Guo Ying Zhang Li Ma Wenshuo Zhou Zhikun Liu Lubna Dada Kaspar Dallenbach Jenni Kontkanen Runlong Cai Tommy Chan Biwu Chu Wei Du Lei Yao Yonghong Wang Jing Cai Juha Kangasluoma Tom Kokkonen Joni Kujansuu Anton Rusanen Chenjuan Deng Yueyun Fu Rujing Yin Xiaoxiao Li Yiqun Lu Yiliang Liu Chaofan Lian Dongsen Yang Weigang Wang Maofa Ge Yuesi Wang Douglas R.Worsnop Heikki Junninen Hong He Veli-Matti Kerminen Jun Zheng Lin Wang Jingkun Jiang Tuukka Petaja Federico Bianchi Markku Kulmala | 2020 | Big Earth Data2020，4，3： | 3 |
| 5 | Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li-S Batteries显示文摘The practical application of lithium-sulfur batteries is severely hampered by the poor conductivity,polysulfide shuttle effect and sluggish reaction kinetics of sulfur cathodes.Herein,a hierarchi-cally porous three-dimension(3D)carbon architecture assembled by cross-linked carbon leaves with implanted atomic Co-N4 has been deli-cately developed as an advanced sulfur host through a SiO_(2)-mediated zeolitic imidazolate framework-L(ZIF-L)strategy.The unique 3D architectures not only provide a highly conductive network for fast electron transfer and buffer the volume change upon lithiation-delithi-ation process but also endow rich interface with full exposure of Co-N4 active sites to boost the lithium polysulfides adsorption and conversion.Owing to the accelerated kinetics and suppressed shuttle effect,the as-prepared sulfur cathode exhibits a superior electrochemical perfor-mance with a high reversible specific capacity of 695 mAh g^(−1) at 5 C and a low capacity fading rate of 0.053%per cycle over 500 cycles at 1 C.This work may provide a promising solution for the design of an advanced sulfur-based cathode toward high-performance Li-S batteries. | Ruirui Wang Renbing Wu Chaofan Ding Ziliang Chen Hongbin Xu Yongfeng Liu Jichao Zhang Yuan Ha Ben Fei Hongge Pan | 2021 | Nano-Micro Letters2021，13，10： | 3 |
| 6 | Moderate papain addition improves the physicochemical,microbiological,flavor and sensorial properties of Chouguiyu,traditional Chinese fermented fish显示文摘The objective of this study was to investigate the effect of papain on the physicochemical and microbiological properties,volatile compound profiles,and sensorial attributes of Chouguiyu.Papain was applied at a dose of 10,50,200,400 U/g fish.Results showed that papain addition improved the release of free amino acids,essential amino acids,eicosapentaenoi acid(EPA,C20:5n3),and docosapentenoic acid(DPA,C22:5n6),respectively.Lower biogenic amines content,higher the volatile compound concentrations and relative abundance of Lactobacillales were also observed.Further results showed that the papain dose group decreased the fermentation time from 10 to 7 days while good organoleptic quality was remained,especially in the 200 U/g dose group.The redundancy analysis(RDA)showed a high correlation between Lactobacillus and the key volatile compounds in the 200 U/g and 400 U/g groups,which indicated that Lactobacillus could contribute to the fatty flavor.In summary,proper papain addition(i.e.200 U/g or 400 U/g)could reduce biogenic amines contents and maintain acceptable sensorial properties of Chouguiyu in a shorter fermentation time. | Wenhuan Xu Cuicui Jiang Aoxue Liu Ruiqi Bao Wenqing Wang Zuoli Zhang Chaofan Ji Huipeng Liang Sufang Zhang Xinping Lin | 2022 | Food Bioscience2022，46，2： | 2 |
| 7 | The role of fluorescent carbon dots in crops:Mechanism and applications显示文摘Fluorescent carbon dots(CDs)have been widely studied in biosensing,imaging,information encryption,and optoelectronic devices due to excellent optical properties,such as photostability,tunable luminescence range,and resistance to photobleaching.In recent years,CDs have been explored for use in agriculture.Based on their light harvest and light conversion capacity,as well as their characteristics of easy synthesis and low toxicity,CDs show great potential in improving crop photosynthesis.In addition,CDs can also be used for smart and anticounterfeiting packing,food safety detection,and preservation of crops after harvest.In this study,the application of CDs with excellent optical properties in crops has been summarized,including preharvest processes(photosynthesis and plant imaging),and postharvest processes(crop preservation and food safety).Then the toxicity of CDs to crops is introduced.Finally,the present challenges and future prospects are discussed. | Baoyan Guo Guo Liu Haopeng Wei Jiemin Qiu Jianle Zhuang Xuejie Zhang Mingtao Zheng Wei Li Haoran Zhang Chaofan Hu Bingfu Lei Yingliang Liu | 2022 | SmartMat2022，3，2： | 2 |
| 8 | Application of passive source surface-wave method in site engineering seismic survey显示文摘Site engineering seismic survey provides basic data for seismic effect analysis. As an important parameter of soil, shear-wave velocity is usually obtained through wave velocity testing in borehole. In this paper, the passive source surface-wave method is introduced into the site engineering seismic survey and practically applied in an engineering site of Shijingshan District. By recording the ubiquitous weak vibration on the earth surface, extract the dispersion curve from the surface-wave components using the SPAC method and obtain the shear-wave velocity structure from inversion. Over the depth of 42 m underground, it totally consists of five layers with interface depth of 3.31, 4.50, 7.23, 17.41, and 42.00 m; and shear-wave velocity of 144.0, 198.3, 339.4, 744.2, and 903.7 m/s, respectively. The inversion result is used to evaluate site classification, determine the maximum shear modulus of soil, provide basis for further seismic hazard analysis and site assessment or site zoning, etc. The result shows that the passive source surface-wave method is feasible in the site engineering seismic survey and can replace boreholes,shorten survey period, and reduce engineering cost to some extent. | Chaofan Wang Jian Zhang Lihui Yan Hui Liu Dong Zhao | 2014 | Earthquake Science2014，27，1： | 2 |
| 9 | Multifunctional succinate additive for flexible perovskite solar cells with more than 23%power-conversion efficiency显示文摘Flexible perovskite solar cells(FPSCs)have emerged as power sources in versatile applications owing to their high-efficiency characteristics,excellent flexibility,and relatively lowcost.Nevertheless,undesired strain in perovskite films greatly impacts the power-conversion efficiency(PCE)and stability of PSCs,particularly in FPSCs.Herein,a novel multifunctional organic salt,methylammonium succinate,which can alleviate strain and reinforce grain boundaries,was incorporated into the perovskite film,leading to relaxed microstrain and a lower defect concentration.As a result,a PCE of 25.4%for rigid PSCs and a record PCE of 23.6%(certified 22.5%)for FPSCs have been achieved.In addition,the corresponding FPSCs exhibited excellent bending durability,maintaining85%of their initial efficiency after bending at a 6 mm radius for 10000 cycles. | Minghao Li Junjie Zhou Liguo Tan Hang Li Yue Liu Chaofan Jiang Yiran Ye Liming Ding Wolfgang Tress Chenyi Yi | 2022 | The Innovation2022，3，6： | 2 |
| 10 | Biomirnetic synthesis of spherical nano-hydroxyapatite in the presence of polyethylene glycol 显示文摘 | QIU Chaofan XIAO Xiufeng LIU Rongfang | 2008 | Ceram Int2008，34，7： | 1 |
| 11 | Micro/nano-mechanical behaviors of individual FCC,BCC and FCC/BCC interphase in a high-entropy alloy显示文摘Here,a systematic investigation was made on the interphase strengthening effects induced superior me-chanical performances of multiphase high-entropy alloys(HEAs)at micro/nano-scale,compared with sin-gle phase HEAs.A pillar compression test under a scanning electron microscope(SEM)was performed on the individual face centered cubic(FCC),body centered cubic(BCC),and mixed-phases with different di-ameters in a Fe_(24)Co_(25)Ni_(24)Cr_(23)Al_(4)HEA using focused ion beam(FIB)milling and a nanoindenter equipped with a flat punch.The stress-strain response of pillar underneath the indenter was selected to explore the diameter/phase-dependent size effect,the periodically fluctuation of local stress,and strain hardening.It was revealed that the pillars at the interphase exhibited significantly higher strength,compared with the FCC and BCC pillars.An experiment also verified the coincident mechanical size effects independent with the type of phases.The stress responses in the mixed-phase pillars manifested as a distinct transition from the dramatic drop to the minor fluctuation during the post-yield stages with the increasing strain,indicating the propagation of Al-Ni enriched solid solution phase(BCC1)under compression.Except the BCC1 phase,numerous dislocations were observed in the post-deformed pillars,particularly serving as the major source to enhance the strain hardening of BCC pillars. | Wei Zhang Zhichao Ma Chaofan Li Chaowei Guo Dongni Liu Hongwei Zhao Luquan Ren | 2022 | Journal of Materials Science & Technology2022，，19： | 1 |
| 12 | Tuning exsolution of nanoparticles in defect engineered layered perovskite oxides for efficient CO_(2) electrolysis显示文摘Solid oxide electrolysis cell(SOEC) could be a potential technology to afford chemical storage of renewable electricity by converting water and carbon dioxide.In this work,we present the Ni-doped layered perovskite oxides,(La_(4)Sr_(n-4))_(0.9)Ti_(0.9n)Ni_(0.1n)O_(3n+2) with n=5,8,and 12(LSTNn) for application as catalysts of CO_(2) electrolysis with the exsolution of Ni nanoparticles through a simple in-situ growth method.It is found that the density,size,and distribution of exsolved Ni nanoparticles are determined by the number of n in LSTNn due to the different stack structures of TiO_6 octahedra along the c axis.The Ni doping in LSTNn significantly improved the electrochemical activity by increasing oxygen vacancies,and the Ni metallic nanoparticles afford much more active sites.The results show that LSTNn cathodes can successfully be manipulated the activity by controlling both the n number and Ni exsolution.Among these LSTNn(n=5,8,and 12),LSTN8 renders a higher activity for electrolysis of CO_(2) with a current density of 1.50A cm^(-2)@2.0 V at 800℃ It is clear from these results that the number of n in(La_(4)Sr_(n-4))_(0.9)Ti_(0.9n)Ni_(0.1n)O_(3n+2)with Ni-doping is a key factor in controlling the electrochemical performance and catalytic activity in SOEC. | Zhengrong Liu Jun Zhou Yueyue Sun Xiangling Yue Jiaming Yang Lei Fu Qinyuan Deng Hongfei Zhao Chaofan Yin Kai Wu | 2023 | Journal of Energy Chemistry2023，，9： | 1 |
| 13 | Combining radiation and the ATR inhibitor berzosertib activates STING signaling and enhances immunotherapy via inhibiting SHP1 function in colorectal cancer显示文摘Background:Immune checkpoint inhibitors(ICIs)targeting programmed cell death protein 1(PD-1)and programmed death-ligand 1(PD-L1)have shown a moderate response in colorectal cancer(CRC)with deficient mismatch repair(dMMR)functions and poor response in patients with proficientMMR(pMMR).pMMRtumors are generally immunogenically“cold”,emphasizing combination strategies to turn the“cold”tumor“hot”to enhance the efficacy of ICIs.ATR inhibitors(ATRi)have been proven to cooperate with radiation to promote antitumor immunity,but it is unclear whether ATRi could facilitate the efficacy of IR and ICI combinations in CRCs.This study aimed to investigate the efficacy of combining ATRi,irradiation(IR),and anti-PD-L1 antibodies in CRC mouse models with different microsatellite statuses.Methods:The efficacy of combining ATRi,IR,and anti-PD-L1 antibodies was evaluated in CRC tumors.The tumor microenvironment and transcriptome signatures were investigated under different treatment regimens.The mechanisms were explored via cell viability assay,flow cytometry,immunofluorescence,immunoblotting,co-immunoprecipitation,and real-time quantitative PCR in multiple murine and human CRC cell lines.Results:Combining ATRi berzosertib and IR enhanced CD8+T cell infiltration and enhanced the efficacy of anti-PD-L1 therapy in mouse CRC models with different microsatellite statuses.The mechanistic study demonstrated that IR+ATRi could activate both the canonical cGAS-STING-pTBK1/pIRF3 axis by increasing cytosolic double-stranded DNA levels and the non-canonical STING signaling by attenuating SHP1-mediated inhibition of the TRAF6-STINGp65 axis,via promoting SUMOylation of SHP1 at lysine 127.By boosting the STING signaling,IR+ATRi induced type I interferon-related gene expression and strong innate immune activation and reinvigorated the cold tumor microenvironment,thus facilitating immunotherapy.Conclusions:The combination of ATRi and IR could facilitate anti-PD-L1 therapy by promoting STING signaling in CRC models with different microsatellite statuses.The new combination strategy raised by our study isworth investigating in the management of CRC. | Chaofan Liu Xi Wang Wan Qin Jingyao Tu Chunya Li Weiheng Zhao Li Ma Bo Liu Hong Qiu Xianglin Yuan | 2023 | Cancer Communications2023，43，4： | 1 |
| 14 | Effects of Nitrogen Sources and Concentrations on the Growth of Different Phytoplankton Taxa显示文摘Effects of different nitrogen(N)compounds and concentrations on the growth of the three different phytoplankton taxa,Skeletonema costatum(Bacillariophyceae),Prorocentrum micans(Dinophyceae),and Chattonella marina(Raphidophyceae),were investigated.The Monod equation was applied to examine effects of N concentrations on the growth of algal cells.Results showed that nitrate(NO_(3)-N)and urea served as good N sources for the three phytoplankton taxa.S.costatum grew well on all of the seven N sources.C.marina can effectively use the two amino acids,glycine(Gly)and serine(Ser),however cannot utilize alanine(Ala),threonine(Thr),and asparaginic acid(Asp).P.micans cannot grow in five amino acid substrates.All of the three phytoplankton taxa grew well under different proportions of urea-N,and C.marina grew significantly better in medium with both NO_(3)-and urea-N.The values of maximum growth rate(μmax)and half-saturation nutrient concentration(KS)for NO_(3)-N were 0.71 divisions d−1 and 53.55μmolL^(−1) for S.costatum,0.67 divisions d−1 and 23.31μmolL^(−1) for P.micans,and 0.23 divisionsd−1 and 17.57μmolL^(−1) for C.marina,respectively.The results suggested that S.costatum had a high N demand for growth,and was capable of using wide ranges of N compounds.The strategy of N utilization for S.costatum may make this species an advantage in N-enriched sea areas especially the dissolved organic nitrogen(DON)rich coastal waters,which might be the reason why S.costatum widely distributes in the cosmo-politan coastal and estuarine sea areas. | LIU Lei WANG Zhaohui WANG Chaofan LI Weiguo NIE Xiangping | 2021 | Journal of Ocean University of China2021，20，3： | 1 |
| 15 | Near-infrared chemiluminescent carbon nanogels for oncology imaging and therapy显示文摘Carbon nanogels(CNGs)with dual ability of reactive oxygen species(ROS)imaging and photodynamic therapy have been designed with selfassembled chemiluminescent carbonized polymer dots(CPDs).With efficient deep-red/near-infrared chemiluminescence(CL)emission and distinctive photodynamic capacity,the H2O2-driven chemiluminescent CNGs are further designed by assembling the polymeric conjugate and CL donors,enabling an in vitro and in vivo ROS bioimaging capability in animal inflammation models and a high-performance therapy for xenograft tumors.Mechanistically,ROS generated in inflammatory sites or tumor microenvironment can trigger the chemically initiated electron exchange luminescence in the chemical reaction of peroxalate and H2O2,enabling in vivo CL imaging.Meanwhile,part of the excited-state electrons will transfer to the ambient H2O or dissolved oxygen and in turn lead to the type I and type II photochemical ROS production of hydroxyl radicals or singlet oxygen,endowing the apoptosis of tumor cells and thus enabling cancer therapy.These results open up a new avenue for the design of multifunctional nanomaterials for bioimaging and antienoplastic agents. | Chenglong Shen Tianci Jiang Qing Lou Wenbo Zhao Chaofan Lv Guangsong Zheng Hangrui Liu Pengfei Li Lingling Dai Kaikai Liu Jinhao Zang Feng Wang Lin Dong Songnan Qu Zhe Cheng Chongxin Shan | 2022 | SmartMat2022，3，2： | 1 |
| 16 | Pressure-induced photoluminescence enhancement and ambient retention in confined carbon dots显示文摘Piezochromic luminescent materials have shown great potential in advanced optoelectronic applications.However,most of luminescent materials usually undergo emission quenching under external stimuli.Herein,we demonstrate for the first time that the photoluminescence of carbon dots(CDs)confined within sodium hydroxide can be enhanced when high pressure is applied.They exhibit a 1.6-fold fluorescence enhancement compared with pristine CDs.Importantly,the enhanced fluorescence intensity can be retained after the release of pressure to ambient conditions.A combination of experimental analysis and theoretical simulations indicates that such an enhanced emission is mainly attributed to the strong confinement resulting from the sodium hydroxide matrix,which can separate the CDs spatially and restrict the nonradiative pathway.These results provide a rational strategy for manipulating the optical properties of CDs with enhanced and retainable photoluminescence(PL)performance,thus opening up a venue for designing luminescent CDs-based materials. | Qing Lou Xigui Yang Kaikai Liu Zhongzheng Ding Jinxu Qin Yizhe Li Chaofan Lv Yuan Shang Yuewen Zhang Zhuangfei Zhang Jinhao Zang Lin Dong Chong-Xin Shan | 2022 | Nano Research2022，15，3： | 1 |
| 17 | Temperature-Dependent Luminescence Characteristic of SrSi_2O_2N_2:Eu^(2+) Phosphor and Its Thermal Quenching Behavior显示文摘The yellow SrSi2O2N2:Eu2+ phosphor has been synthesized by using a simple solid-state reaction method with Srt2SiO4:Eu2 as the precursor. It shows a broad excitation band extending from 250 to 520 nm and an asymmetric emission band with a main peak at about 550 nm. The emission intensity of the SrSi22O2N2:Eut is about 1.2 times higher than the commercial yellow phosphor YAG:Ce3+(P46-Y3). The temperaturedependent luminescence characteristic of SrSi22O2N2:Euthas been investigated in this paper. With increasing temperature, the emission band of SrSi2O2N2:Eu2+ shows anomalous blue-shift along with decreasing emission intensity and the broadening full width at half maximum(FWHM). Particularly, compared with YAG:Ce3t(P46-Y3), the yellow SrSi2O2N2:Eu2+ phosphors exhibit higher thermal stability due to their weaker electron-phonon coupling strength(1.1), lower stokes shift(0.0576 eV) and larger activation energy(0.288 eV). All these results indicate that SrSi2O2N2:Eu2+ yellow phosphors have potential application for white light-emitting diodes(LEDs). What's more, an energy level scheme is constructed to explain the anomalous blue-shift phenomenon. | Jinlan Qin Chaofan Hu Bingfu Lei Jinfang Li Yingliang Liu Shuiping Ye Miaozhu Pan | 2014 | Journal of Materials Science & Technology2014，30，3： | 1 |
| 18 | Effects of iron precursors on the structure and catalytic performance of iron molybdate prepared by mechanochemical route for methanol to formaldehyde显示文摘Mechanochemical synthesis has been applied for many novel material preparations and gained more and more attention due to green and high-efficiency recently. In order to explore the influences of iron precursors on structure and performance of iron molybdate catalyst prepared by mechanochemical route, three typical and cheap iron precursors have been used in preparation of iron molybdate catalyst. Many characterization methods have been employed to obtain the physical and chemical properties of iron molybdate catalyst. Results indicate that iron precursors have the significant impact on the phase composition, crystal morphology and catalytic performance in the conversion of methanol to formaldehyde. It is hard to regulate the phase composition by changing Mo/Fe mole ratios for Fe2(SO4)3 as iron precursor. In addition, as for Fe2(SO4)3, the formaldehyde yield is lower than that from iron molybdate catalyst prepared with Fe(NO3)3·9H2O due to the reduction in Fe2(MoO4)3 phase as active phase. Based on mechanochemical and coprecipitation method, the solvent water could be a key factor for the formation of MoO3 and Fe2(MoO4) for FeCl3·6H2O and Fe2(SO4)3 as precursors. Iron molybdate catalyst prepared with Fe(NO3)3·9H2O by mechanochemical route, shows the best methanol conversion and formaldehyde yield in this reaction. | Lingtao Kong Shengtao Xu Xue Liu Chaofan Liu Dandan Zhang Ling Zhao | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 1 |
| 19 | High-frequency enhanced response based on Sb_(2)Te_(3)topological insulators显示文摘Topological insulators represent a new quantum phase of matter with spin-polarized surface states that are protected from backscattering, exhibiting electronic responses to light, such as topological quantum phase transitions. However, the effects of high-frequency driving topological intrinsic systems have remained largely unexplored challenges experimentally for high-sensitivity terahertz detection. In this study, by integrating Sb2Te3 topological insulators with subwavelength metal antennas through micro-nano processing, a high-frequency terahertz detector with high sensitivity is proposed. The enhanced response originates from the asymmetric scattering of the surface electrons in the Sb_(2)Te_(3) flakes induced by the terahertz wave. The device displays room-temperature photodetection with a responsivity of 192 mA/W and equivalent noise power of less than 0.35 nW/Hz^(1/2) in the frequency range from 0.02 to 0.3 THz. These results pave the way for the exploitation of topological insulators for high-frequency operation in real-time imaging within long-wavelength optoelectronics. | SHI ZHANG CHAOFAN SHI WEIWEI TANG LIBO ZHANG LI HAN CHENGSEN YANG ZHENGYANG ZHANG JIAN WANG MIAO CAI GUANHAI LI CHANGLONG LIU LIN WANG XIAOSHUANG CHEN WEI LU | 2022 | Photonics Research2022，10，10： | 1 |
| 20 | Cutting edge mathematical model for ellipsoidal end mill显示文摘 | MENG Chaofan LIU Xianli JI Wei | 2014 | Materials Science Forum2014，，： | 1 |
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