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| 1 | Mechanism study on flotation separation of molybdenite from chalcocite using thioglycollic acid as depressant显示文摘Effects of collectors(butyl xanthate(BX), O-isopropyl-N-sulfur ethyl carbamate(Z-200) and emulsified kerosene), dereagent(sodium sulfide) and depressant thioglycollic acid(TGA) on the flotation of chalcocite and molybdenite were investigated through flotation. The first principle theory was adopted to understand the difference of their surfaces and reaction between minerals and reagents. Results of flotation tests revealed that selectivity of emulsified kerosene is the best of three collectors in separation of chalcocite and molybdenite, though the others also display excellent collecting properties. Sodium sulfide can effectively remove collectors adsorbed on chalcocite surface, and TGA is an effective depressant of chalcocite at pH 8-9. Through first principle study, molybdenite displays relatively stronger covalence property while bonding interaction between copper atoms in chalcocite enhanced its ionicity. Bonding interaction is weaker in reaction of TGA and molybdenite, so it shows higher hydrophobicity and better flotability. Therefore, TGA is an effective inhibitor in the separation. | Qin Wenqing Wu Jiajia Jiao Fen Zeng Jinming | 2017 | International Journal of Mining Science and Technology2017，27，6： | 5 |
| 2 | A new π-conjugated star-shaped polymer comprising of full fluorene units: An efficient blue emitter without reduction of color purity undergoing an annealing显示文摘 | Shijie Ren Jiangong Cheng Danli Zeng Wenqing Zhu Jing Sun Junping Du Erjian Xu Hongliang Zhong Yingchun Liu Qiang Fang | 2008 | Synthetic Metals2008，，1： | 1 |
| 3 | Chemotherapy drugs derived nanoparticles encapsulating mRNA encoding tumor suppressor proteins to treat triple-negative breast cancer显示文摘Triple-negative breast cancer(TNBC)is one type of the most aggressive breast can cers with poor prog no sis.It is of great urgency to develop new therapeutics for treati ng TNBC.Based on curre nt treatment guideline and genetic informatio n of TNBC,a combi nation al therapy platform in tegrati ng chemotherapy drugs and mRNA encoding tumor suppressor proteins may become an efficacious strategy.In this study,we developed paclitaxel amino lipid(PAL)derived nanoparticles(NPs)to incorporate both chemotherapy drugs and P53 mRNA.The PAL P53 mRNA NPs showed superior properties compared to Abraxane? and Lipusu? used in the clinic including high paclitaxel loading capacity(24 wt.%,calculated by paclitaxel in PAL),PAL encapsulation efficiency(94.7%±6.8%)and mRNA encapsulation efficiency(88.7%±0.7%).Meanwhile,these NPs displayed synergetic cytotoxicity of paclitaxel and P53 mRNA in cultured TNBC cells.More importantly,we demonstrated in vivo anti-tumor efficacy of PAL P53 mRNA NPs in an orthotopic TNBC mouse model.Overall,these chemotherapy drugs derived mRNA NPs provide a new platform to integrate chemotherapy and personalized medicine using tumor genetic information,and therefore represent a promising approach for TNBC treatment. | Chengxiang Zhang Xinfu Zhang Weiyu Zhao Chunxi Zeng Wenqing Li Bin Li Xiao Luo Junan Li Justin Jiang Binbin Deng David W. McComb Yizhou Dong | 2019 | Nano Research2019，12，4： | 1 |
| 4 | TPC in the leaves of 116 sweet potato ( Ipomoea batatas L.) varieties and Pushu 53 leaf extracts显示文摘 | Wenqing Xu Lixiang Liu Bing Hu Yi Sun Hong Ye Daifu Ma Xiaoxiong Zeng | 2010 | Journal of Food Composition and Analysis2010，，6： | 1 |
| 5 | Cross-interference correction and simultaneous multi-gas analysis based on infrared absorption显示文摘 | Sun Youwen Zeng Yi Liu Wenqing | 2012 | Chin Phys B2012，21，09： | 1 |
| 6 | The latest application of SLon vertical ring and pulsating high - gradient magnetic separator 显示文摘 | Zeng Wenqing Xiong Dahe | 2003 | Minerals Engineering2003，16，6： | 1 |
| 7 | Synergistic oxidation-reforming of biomass for high quality syngas production based on a bifunctional catalyst显示文摘Conventional O_(2)gasification for low-rank biomass/sludge conversion is prone to high CO_(2)concentrations in the syngas because of its high O content and low calorific value.This study establishes a synergistic oxidationreforming reaction route for the conversion of low-rank carbon-containing resources into high-quality syngas.The efficient oxidation-reforming reaction is based on the bifunctional catalyst NiO-Fe2O3/Al2O3,which includes Fe2O3 oxidation sites and NiO reforming sites.Hydrogen temperature-programmed reduction,together with X-ray diffraction and X-ray photoelectron spectroscopy experiments,demonstrated that the two functional active sites have strong interactions with the support,leading to efficient cooperation between the oxidation reaction and reforming reaction with regards to both the reaction sequence and C/H/O element balance.Syngas produced from biomass/sludge based on oxidation-reforming reactions has an extremely low CO_(2)concentration of approximately 3%,and the valid gas(CO,H_(2))concentration exceeds 95%.The valid gas yield of walnut shell reached 1452.9 mL/g,the total gas yield was 1507.2 mL/g,and the H_(2)/CO ratio was 1.02,which are all very close to the theoretical maximum values of 1553.1 mL/g and 1.01,respectively,demonstrating that the inherent CO_(2)/H_(2)O along with CH4/tar species were efficiently converted to H_(2)and CO through oxidation-reforming reactions.During a 60-cycle test,NiO-Fe2O3/Al2O3 exhibited good redox stability. | Tao He Dan Zhang Wenqing Chen Zeng Liu Ruidong Zhao Jianqing Li Jingli Wu Zhiqi Wang Jinhu Wu | 2024 | Green Carbon2024，2，1： | 0 |
| 8 | Paleoclimate evolution and aridification mechanism of the eastern Tethys during the Callovian–Oxfordian: evidence from geochemical records of the Qiangtang Basin, Tibetan Plateau显示文摘Global climate during the Jurassic has been commonly described as a uniform greenhouse climate for a long time.However,the climate scenario of a cool episode during the Callovian-Oxfordian transition following by a warming trend during the Oxfordian(163.53 to157.4 Ma)is documented in many localities of the western Tethys.It is still unclear if a correlatable climate scenario also occurred in the eastern Tethys during the same time interval.In this study,a detailed geochemical analysis on the 1060 m thick successions(the Xiali and Suowa formations)from the Yanshiping section of the Qiangtang Basin,located in the eastern Tethys margin during the Callovian-Oxfordian periods,was performed.To reveal the climate evolution of the basin,carbonate content and soluble salt concentrations(SO_(4)^(2-),Cl^(-))were chosen as climatic indices.The results show that the overall climate patterns during the deposition of the Xiali and Suowa formations can be divided into three stages:relatively humid(164.0 to 160.9 Ma),dry(160.9 to159.6 Ma),semi-dry(159.6 to 156.8 Ma).A similar warming climate scenario also occurred in eastern Tethys during the Callovian-Oxfordian transition(160.9 to159.6 Ma).Besides,we clarify that the Jurassic True polar wander(TPW),the motion of the lithosphere and mantle with respect to Earth’s spin axis,inducing climatic shifts were responsible for the aridification of the Qiangtang Basin during the Callovian-Oxfordian transition with a review of the paleolatitude of the Xiali formation(19.7+2.8/-2.6°N)and the Suowa formation(20.7+4.1/-3.7°N).It is because the TPW rotations shifted the East Asia blocks(the North and South China,Qiangtang,and Qaidam blocks)from the humid zone to the tropical/subtropical arid zone and triggered the remarkable aridification during the Middle-Late Jurassic(ca.165-155 Ma). | Yongyao Zeng Lei Gao Wenqing Zhao | 2021 | Acta Geochimica2021，40，2： | 0 |
| 9 | Dependence of Structure and Magnetic Properties on Annealing Temperature in Fe(72.5)Cu1Nb2V2Si(13.5)B9 Alloy显示文摘The magnetic properties of Fe72.5Cu1Nlb2V2Si1a.5B9 alloy are investigated from an amorphous to a nanocrystalline and completecrystalline state. The sample annealed at 550℃ for 0.5 h shows a homogeneous nanocrystalline structure and presents excellentsoft magnetic properties. When the specimens were annealed at a temperature above 600℃, the magnetic properties areobviously deteriorated because the grain size grows up, exceeding the exchange length. | Chunyan BAN, Wenqing GAO, Guiyi ZENG, Qixian BA Hualin ZENGSchool of Materials and Metallurgy, Northeastern University, Shenyang 110004, China | 2003 | Journal of Materials Science & Technology2003，19，3： | 0 |
| 10 | Commissioning experiment of the high-contrast SILEX-Ⅱ multi-petawatt laser facility显示文摘The results of a commissioning experiment on the SILEX-Ⅱlaser facility(formerly known as CAEP-PW)are reported.SILEX-Ⅱis a complete optical parametric chirped-pulse amplification laser facility.The peak power reached about 1 PWin a 30 fs pulse duration during the experiment.The laser contrast was better than 1010 at 20 ps ahead of the main pulse.In the basic laser foil target interaction,a set of experimental data were collected,including spatially resolved x-ray emission,the image of the coherent transition radiation,the harmonic spectra in the direction of reflection,the energy spectra and beam profile of accelerated protons,hot-electron spectra,and transmitted laser energy fraction and spatial distribution.The experimental results show that the laser intensity reached 531020 W/cm^(2) within a 5.8μm focus(FWHM).Significant laser transmission did not occur when the thickness of theCHfoil was equal to or greater than 50 nm.The maximum energy of the accelerated protons in the target normal direction was roughly unchanged when the target thickness varied between 50 nm and 15μm.The maximum proton energy via the target normal sheath field acceleration mechanism was about 21 MeV.We expect the on-target laser intensity to reach 10^(22) W/cm^(2) in the near future,after optimization of the laser focus and upgrade of the laser power to 3 PW. | Wei Hong Shukai He Jian Teng Zhigang Deng Zhimeng Zhang Feng Lu Bo Zhang Bin Zhu Zenghai Dai Bo Cui Yuchi Wu Dongxiao Liu Wei Qi Jinlong Jiao Faqiang Zhang Zuhua Yang Feng Zhang Bi Bi Xiaoming Zeng Kainan Zhou Yanlei Zuo Xiaojun Huang Na Xie Yi Guo Jingqin Su Dan Han Ying Mao Leifeng Cao Weimin Zhou Yuqiu Gu Feng Jing Baohan Zhang Hongbo Cai Minqing He Wudi Zheng Shaoping Zhu Wenjun Ma Dahui Wang Yinren Shou Xueqing Yan Bin Qiao Yi Zhang Congling Zhong Xiaohui Yuan and Wenqing Wei | 2021 | Matter and Radiation at Extremes2021，6，6： | 0 |
| 11 | Micropore engineering on hollow nanospheres for ultra-stable sodium-selenium batteries显示文摘Attracted by high energy density and considerable conductivity of selenium(Se),Na-Se batteries have been deemed promising energy-storage systems.But,it still suffers from sluggish kinetic behaviors and similar“shuttling effect”to S-electrodes.Herein,utilizing uniform hollow carbon spheres as precursors,Se-material is effectively loaded through vapor-infiltration method.Owing to the distribution of optimized pores,the content of microspores could be up to~60%(<2 nm),serving important roles for the physical confinement effect.Meanwhile,the rich oxygen-containing groups and N-elements could be noted,inducing the evolution of electron-moving behaviors.More significantly,assisted by the interfacial C-Se bonds and tiny Se distributions,Se electrodes are activated during cycling.Used as cathodes for Na-Se systems,the as-resulted samples display a capacity of 593.9 mA h g^(-1)after 100 cycles at the current density of 0.1 C.Even after 6000 cycles,the capacity could be still kept at about 225 mA h g^(-1)at 5.0 C.Supported by the detailed kinetic analysis,the designed microspores size induces the increasing redox reaction of nano Se,whilst the surface traits further render the enhancement of pseudo-capacitive contributions.Moreover,after cycling,the product Sex(x<4)in pores serves as the primary active material.Given this,the work is anticipated to provide an effective strategy for advanced electrodes for Na-Se systems. | Gongke Wang Yumeng Chen Yu Han Lixue Yang Wenqing Zhao Changrui Chen Zihao Zeng Shuya Lei Shaohui Yuan Peng Ge | 2023 | Journal of Energy Chemistry2023，，5： | 0 |
| 12 | Uncovering the evolution of tin use in the United States and its implications显示文摘Tin is of key importance to daily life and national security;it is considered an essential industrial metal.The United States(US)is the world’s largest economy and consumer of natural resources.Therefore,the analysis of historical tin use in the US is helpful for understanding future tin use trends in the world as a whole and in developing countries.Time series analysis,regression analysis with GDP or GDP/capita,and historical data fitted with logistic and Gompertz models are employed in this study.Historical tin use in the US shows three stages-increase-constant-decrease,as GDP per capita has increased.Tin use in the US is negatively correlated with the GDP value added by the manufacturing sector,while the use of tin worldwide and in China continues to increase along with the GDP value added by the manufacturing sector.Although a sigmoid curve can fit the US tin use data well,that use is not directly related to the limited tin reserves or resources.Rather,policies,economic restructuring,substitutions,new end-use markets,etc.have played key roles in the changing tin use patterns.This work contributes to understanding future tin use at both the global and national levels:tin use will continue to increase with GDP at the global level,but use patterns of tin at the national level can be changed through human intervention. | Congren Yang Xianlai Zeng Haodong Li Zuyuan Tian Wei Liu Wenqing Qin Jinhui Li | 2021 | Frontiers of Environmental Science & Engineering2021，15，6： | 0 |
| 13 | Carboxylated carbon nanotubes with high electrocatalytic activity for oxygen evolution in acidic conditions显示文摘Since most electrocatalysts for oxygen evolution reaction(OER),except for precious metal oxides RuO_(2) and IrO_(2),are unstable in harsh acidic solutions,it is highly desirable to develop high-performance OER electrocatalysts for acidic media,though it is still a big challenge.Herein,we report a simple strategy to produce carboxyl-enriched multiwalled carbon nanotubes(COOH-MWNTs)that exhibit stable and high electrocatalytic activities for OER in acidic solutions,showing an overpotential at a current density of 10 mA cm^(–2) and a Tafel slope as low as of 265 mV and 82 mV dec^(–1),respectively.As far as we are aware,these results represent the best OER performance for metal-free electrocatalysts,even comparable to those of RuO_(2) and IrO_(2).We have further revealed the catalytic mechanism,which involves one electron lose from the COOH-MWNTs catalyst at the beginning of the OER process to trigger H_(2)O molecule oxidation by forming peralcohol,followed by the recapture of one electron from water molecule to oxidize water and to recover the initial state for the COOH-MWNTs catalyst.The unravel of this new OER mechanism is important as it provides new insights into the crucial role of organic functional groups in electrocatalytic processes.Also,the mechanistic understanding can be used to guide the design and development of novel metalfree catalysts for acidic OER electrocatalysis and beyond. | Xin Zhang Wenqing Zhang Jianying Dai Mingzi Sun Jun Zhao Lifei Ji Lin Chen Fanlong Zeng Fengchun Yang Bolong Huang Liming Dai | 2022 | InfoMat2022，4，1： | 0 |
| 14 | Spent graphite regeneration:Exploring diverse repairing manners with impurities-catalyzing effect towards high performance and low energy consumption显示文摘Spent battery recycling has received considerable attention because of its economic and environmental potential.A large amount of retired graphite has been produced as the main electrode material,accompanied by a detailed exploration of the repair mechanism.However,they still suffer from unclear repair mechanisms and physicochemical evolution.In this study,spent graphite was repaired employing three methodologies:pickling-sintering,pyrogenic-recovery,and high-temperature sintering.Owing to the catalytic effect of the metal-based impurities and temperature control,the as-obtained samples displayed an ordered transformation,including the interlayer distance,crystalline degree,and grain size.As anodes of lithium ions batteries,the capacity of repaired samples reached up to 310 mA h g^(-1)above after 300loops at 1.0 C,similar to that of commercial graphite.Meanwhile,benefitting from the effective assembly of carbon atoms in internal structure of graphite at>1400℃,their initial coulombic efficiency were>87%.Even at 2.0 C,the capacity of samples remained approximately 244 mA h g^(-1)after 500 cycles.Detailed electrochemical and kinetic analyses revealed that a low temperature enhanced the isotropy,thereby enhancing the rate properties.Further,economic and environmental analyses revealed that the revenue obtained through suitable pyrogenic-recovering manners was approximately the largest value(5500$t^(-1)).Thus,this study is expected to clarify the in-depth effect of different repair methods on the traits of graphite,while offering all-round evaluations of repaired graphite. | Yu Dong Zihao Zeng Zhengqiao Yuan Bing Wang Hai Lei Wenqing Zhao Wuyun Ai Lingchao Kong Yue Yang Peng Ge | 2024 | Journal of Energy Chemistry2024，91，4： | 0 |
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