|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | N-doped ordered mesoporous carbon spheres derived by confined pyrolysis for high supercapacitor performance显示文摘Herein, we report a confined pyrolysis strategy to prepare mesoporous carbon nanospheres by which surface area of carbon spheres is increased, pore size is enlarged and effective N-doping is achieved. In this method, the mesoporous polymer sphere as carbon precursor and 2-methylimidazole as nitrogen precursor are encapsulated in a compact silica shell which provides a confined nano-space for the pyrolysis treatment. The in situ generated gases from mesoporous polymer sphere and 2-methylimidazole under pyrolysis diffuse into the pores of mesoporous polymer sphere in the confined compact silica shell,resulting in increased surface area, larger pore size and N-doping due to self-activation effect. As electrodes in supercapacitor, the N-doped mesoporous carbon nanospheres exhibit a significantly enhanced specific capacitance of 326 Fg^-1 at 0.5 Ag^-1, which is 2 times higher than that of mesoporous carbon spheres under unconfined pyrolysis condition, exhibiting its potential for electrode materials with high performance. | Juan Du Lei Liu Yifeng Yu Yue Zhang Haijun Lv Aibing Chen | 2019 | Journal of Materials Science & Technology2019，35，10： | 4 |
| 2 | A bifunctional and recyclable catalyst:Amine and ionic liquid grafting on MOFs for the one-pot synthesis of N-aryl oxazolidin-2-ones显示文摘A bifunctional heterogeneous catalyst was designed and synthesized,denoted DMEDA/IL–NH2-MIL-101.The structure and physical-chemical characterization of DMEDA/IL–NH2-MIL-101 and its precursors were characterized by SEM,N2 adsorption-desorption,XPS,FT-IR,PXRD,elemental analysis,and TGA techniques.The date showed that the two catalytic components of N,N-dimethylethylenediamine(DMEDA)and 1-butyl-3-methylimidazolium bromide(BmimBr)were chemically immobilized in NH2-MIL-101 nanocages.The amine of DMEDA was grafted onto carrier NH2-MIL-101 by N–Cr coordinate covalent bonds and the ionic liquid of BmimBr(IL(Br-))was anchored in the NH2-MIL-101 nanocages by'ship-in-a-bottle'method,in which the amidogen of NH2-MIL-101 condensed with N,N-carbonyldiimidazole(CDI)firstly,and then alkylated with 1-bromo butane.This novel heterogeneous catalyst with two different active sites can efficiently catalyze the synthesis of N-aryl oxazolidin-2-ones from carbon dioxide(CO2),epoxides,and anilines in one-pot under mild solvent-free conditions.It not only showed good stability and recoverability after five cycles but also exhibited shape selectivity for the substrate due to the synergic catalysis of amine,ionic liquid,and NH2-MIL-101.This novel bifunctional material is a promising solid catalyst for the green synthesis of N-aryl oxazolidin-2-ones. | Siying Chong Tongtong Wang Haijun Zhong Lingfei Xu Hailong Xu Zhongwu Lv Min Ji | 2020 | Green Energy & Environment2020，5，2： | 3 |
| 3 | Fabrication of N-doped carbon nanobelts from a polypyrrole tube by confined pyrolysis for supercapacitors显示文摘In this present work,N-doped carbon nanobelts(N-CNBs)were prepared by a confined-pyrolysis approach and the N-CNBs were derived from a polypyrrole(Ppy)tube coated with a compact silica layer.The silica layer provided a confined space for the Ppy pyrolysis,thereby hindering the rapid overflow of pyrolysis gas,which is the activator for the formation of carbonaceous materials.At the same time,the confined environment can activate the carbon shell to create a thin wall and strip the carbon tube into belt morphology.This process of confined pyrolysis realizes self-activation during the pyrolysis of Ppy to obtain the carbon nanobelts without adding any additional activator,which reduces pollution and preparation cost.In addition,this approach is simple to operate and avoids the disadvantages of other methods that consume time and materials.The as-prepared N-CNB shows cross-linked nanobelt morphology and a rich porous structure with a large specific surface area.As supercapacitor electrode materials,the N-CNB can present abundant active sites,and exhibits a specific capacitance of 246 F·g^(−1),and excellent ability with 95.44%retention after 10000 cycles.This indicates that the N-CNB is an ideal candidate as a supercapacitor electrode material. | Wei Wang Haijun Lv Juan Du Aibing Chen | 2021 | Frontiers of Chemical Science and Engineering2021，15，5： | 1 |
| 4 | Synthesis of nitrogen-doped carbon spheres using the modified Stober method for supercapacitors显示文摘Nitrogen-doped carbon spheres (NCSs) with uniform and regular morphology were facilely prepared by the modified Stober method. Hexamethylenetetramine (HMT) was selected as the starting material, which decomposed to provide nitrogen and carbon sources for the synthesis of NCSs. The decomposition product formaldehyde polymerized to form carbon skeleton with resorcinol after carbonization, and the in-situ nitrogen doping was achieved with the decomposed nitrogen source. NCSs were obtained with regular spherical morphology, high specific surface area, and suitable nitrogen doping. When used as the electrode material, NCSs exhibited good capacitance and electrochemical stability, indicating that NCSs be the promising candidate for the electrode material of high-performance supercapacitors. | Meng LIU Lei LIU Yifeng YU Haijun LV Aibing CHEN Senlin HOU | 2019 | Frontiers of Materials Science2019，13，2： | 1 |
| 5 | Preparation and evaluation of molecularly imprinted solid-phase micro-extraction fibers for selective extraction of phthalates in an aqueous sample显示文摘 | Juan He Ruihe Lv Haijun Zhan Huizhi Wang Jie Cheng Kui Lu Fengcheng Wang | 2010 | Analytica Chimica Acta2010，，1： | 1 |
| 6 | Synthesis of core–shell structured zeolite-A@mesoporous silica composites for butyraldehyde adsorption显示文摘 | Haijun Yu Yingying Lv Kuoyan Ma Changguo Wang Zhaoteng Xue Yujuan Zhao Yonghui Deng Ya Dai Dongyuan Zhao | 2014 | Journal of Colloid And Interface Science2014，，： | 1 |
| 7 | Multiscale Structure Engineering for High-Performance Pb-Free Piezoceramics显示文摘CONSPECTUS:The increasing world energy crisis drives humans to harvest the energy in nature as much as possible without heavily damaging the environment.However,most of the energy in nature cannot be used directly.Therefore,pursuing technologies or matter that can directly interconvert different energies has been one of the most cutting-edge fields in science and technology.Such a magic ability exists in true-life piezoelectric materials that generate charge when being given a force and vice versa,rendering them highly promising for energy harvesting and conversion because of the tremendous mechanical energy on the earth,such as tide energy.Thus,piezoelectric materials,represented by the lead zirconate titanate(Pb(Zr,Ti)O_(3),PZT)family,have been largely used in various traditional and burgeoning fields,such as electronic information,biomedical treatment,and wearable flexible electronic devices,and are one of the most important favorites in multidisciplinary fields.However,Pb is highly toxic.Driven by environmental protection and concern for human health,Pb-free piezoceramics are rapidly being developed to hopefully replace Pb-based ones.In particular,the renewal of Restriction of the use of certain Hazardous Substances(e.g.,RoHS 2),issued by the European Union,declared that replacement of PZT“...may be scientif ically and technologically practical to a certain degree...”.Therefore,developing high-performance Pb-free piezoceramics has become more urgent than ever.In this context,some Pb-free piezoceramics,represented by potassium sodium niobate((K,Na)NbO_(3),KNN),barium titanate(BaTiO_(3),BT),bismuth barium titanate((Bi,Na)TiO_(3),BNT),and bismuth ferrite(BiFeO_(3),BFO),stand out because of their unique or similar traits.However,several key challenges,including an inferior overall performance compared to Pb-based counterparts and an unclear structure−property relationship from multiscale viewpoints,have severely hindered the development of Pb-free piezoceramics for a long time.Pb-based piezoceramics possess decent performance due to the strategy of phase boundary engineering,which inspired the researchers to pursue it in Pb-free counterparts.In the last 10 years,our group has been aiming at the new phase boundary(NPB)and new physical phenomenon in Pb-free piezoceramics.This Account presents our recent contributions to the development of Pbfree piezoceramics concerning the good performance and emerging phenomenon.First,we introduce the construction of the NPB in KNN-based piezoceramics by emphasizing the role of some key elements(i.e.,Bi,Sb,Zr,and Hf).Then,we summarize the effects of the NPB on KNN-and BT-based ceramics and the new physical phenomenon in BNT-based ceramics.The NPB boosts the piezoelectric properties and temperature stability of KNN-and BT-based piezoceramics,comparable to some Pb-based piezoceramics.Combining the NPB and the multilayer ceramics substantially enhances the temperature stability of the piezoelectric constant.A new physical phenomenon of the nanoscale bubble domains with polar topologies is for the first time revealed in BNTbased ceramics,showing potential applications for nonconventional and high-density nonvolatile memories.In particular,we emphasize structure engineering from multiscale viewpoints including the local,microscopic,mesoscopic,and macroscopic structure(e.g.,lattice structure,ferroelectric domains,and phase structure).Finally,we provide perspectives on the future developments of Pb-free piezoceramics toward practical applications. | Xiang Lv Ting Zheng Chunlin Zhao Jie Yin Haijun Wu Jiagang Wu | 2022 | Accounts of Materials Research2022，3，4： | 1 |
| 8 | L2 gain analysis for a class of switched systems 显示文摘 | LV Liang LIN Zongli FANG Haijun | 2009 | Automatica2009，45，1： | 1 |
| 9 | The New Perspective in the Construction of NIS: Civil-military Integration显示文摘 | Haijun Lv Zhixia Gan | 2005 | Chinese Business Review2005，4，3： | 1 |
| 10 | Paclitaxel combined with capecitabine as first?line chemotherapy foradvanced or recurrent gastric cancer显示文摘 | Meiqin Yuan Yunshan Yang Wangxia Lv Zhengbo Song Haijun Zhong | 2014 | Oncology Letters2014，，1： | 1 |
| 11 | CO 2 laser scan- ning repair fused silica surface defects显示文摘 | Jiang Yong He Shaobo Yuan Xiaodong Wang Haijun Li- ao Wei Lv Haibing Liu Chunming Xiang Xia Qiu Rong Yang Yongjia Zheng Wanguo the experimental researches and numerical simulations of Zu Xiaotao | 2014 | Journal of phys- ics2014，，06： | 1 |
| 12 | Thermodynamic evaluation and hydrothermal preparation of K_xNa_(1-x)NbO_3显示文摘The Gibbs free energies of reaction △ r GTof KNbO3 and NaNbO3 were calculated and then that of KxNa1-xNbO3 was estimated. On the ba-sis of the thermodynamic calculation results, the hydrothermal temperatures were designed at 100, 160, and 230°C respectively. However, NaNbO3 was prepared when the heating temperature was higher than 160°C, and KNbO3 and KxNa1-xNbO3 were obtained at 230°C, sug-gesting that only at a higher temperature the kinetic requirement is satisfied. According to the X-ray diffraction results, both the solid solu-tions, NaNbO3-based solid solution, Na1-xKxNbO3, and KNbO3-based solid solution, K1-xNaxNbO3, were hydrothermally synthesized in 6 mol/L alkali (NaOH and KOH) solution at 230°C. | ZHANG Ci LV Haijun GUO Min ZHANG Mei WANG Xidong | 2008 | Rare Metals2008，27，4： | 1 |
| 13 | Research on Performance Measurement System of Knowledge Strategy for Firms显示文摘 | Haijun Lv Zhixia Gan | 2005 | Chinese Business Review2005，4，2： | 0 |
| 14 | Study on the Seismic Fortification Criteria of Offshore Platforms in the Bohai Sea显示文摘This paper analyzes the seismicity and seismic risk distribution in the Bohai Sea. Based on the seismic design parameters of 46 platforms in the Bohai Sea, a statistic analysis is made on the ratios of the peak accelerations for different probability levels. In accordance with the two-stage design method, a scheme of two design seismic levels is proposed, and two fortification goals are established respectively for strength level earthquakes and ductility level earthquakes. Through analogy and comparison to the Chinese seismic code for buildings, it is proposed that the probability level for the strength and ductility level earthquakes takes return periods of 200a and 1000~2500a respectively, and we further expounded on its rationality. Finally, the fortification parameters in the sub-regions of Bohai Sea area are given in the light of seismic risk zonation and ground motion division. This article is a summary of experiences from many years of offshore platform seismic fortification work, and an exploratory study on the seismic fortification standards of offshore platforms in China, which may provide some references for the establishment of the standard. | Lv Yuejun Peng Yanju Wang Junqin Sha Haijun | 2013 | Earthquake Research in China2013，27，1： | 0 |
| 15 | RIPK3 promotes hantaviral replication by restricting JAK-STAT signaling without triggering necroptosis显示文摘Hantaan virus(HTNV)is a rodent-borne virus that causes hemorrhagic fever with renal syndrome(HFRS),resulting in a high mortality rate of 15%.Interferons(IFNs)play a critical role in the anti-hantaviral immune response,and IFN pretreatment efficiently restricts HTNV infection by triggering the expression of a series of IFNstimulated genes(ISGs)through the Janus kinase-signal transducer and activator of transcription 1(JAK-STAT)pathway.However,the tremendous amount of IFNs produced during late infection could not restrain HTNV replication,and the mechanism remains unclear.Here,we demonstrated that receptor-interacting protein kinase 3(RIPK3),a crucial molecule that mediates necroptosis,was activated by HTNV and contributed to hantavirus evasion of IFN responses by inhibiting STAT1 phosphorylation.RNA-seq analysis revealed the upregulation of multiple cell death-related genes after HTNV infection,with RIPK3 identified as a key modulator of viral replication.RIPK3 ablation significantly enhanced ISGs expression and restrained HTNV replication,without affecting the expression of pattern recognition receptors(PRRs)or the production of type I IFNs.Conversely,exogenously expressed RIPK3 compromised the host's antiviral response and facilitated HTNV replication.RIPK3^(-/-)mice also maintained a robust ability to clear HTNV with enhanced innate immune responses.Mechanistically,we found that RIPK3 could bind STAT1 and inhibit STAT1 phosphorylation dependent on the protein kinase domain(PKD)of RIPK3 but not its kinase activity.Overall,these observations demonstrated a noncanonical function of RIPK3 during viral infection and have elucidated a novel host innate immunity evasion strategy utilized by HTNV. | Yue Si Haijun Zhang Ziqing Zhou Xudong Zhu Yongheng Yang He Liu Liang Zhang Linfeng Cheng Kerong Wang Wei Ye Xin Lv Xijing Zhang Wugang Hou Gang Zhao Yingfeng Lei Fanglin Zhang Hongwei Ma | 2023 | Virologica Sinica2023，38，5： | 0 |
| 16 | Therapy Response of Chinese Herbal Medicine in Advanced Liver Cancer: A Retrospective Observational Clinical Trial显示文摘 | Guangmei Lv Liling Zhu Haijun Wan Ping Li Jing Zhang Ruoqu Wei Chongfeng Niu ShengnaiZheng Yongling Gong | 2016 | Journal of Pharmacy and Pharmacology2016，4，3： | 0 |
| 17 | Hydrogen peroxide-activatable iodoBodipy-phthalhydrazid conjugate nanoparticles for cancer therapy显示文摘The dependence on outer light source strongly hinders clinical applications of photodynamic therapy(PDT)to the deep-seated tumor.However,the majority of documented PDT systems that function without the external light source rely on either the chemiluminescence resonance energy transfer(CRET)or fluorescence resonance energy transfer(FRET)mechanism,which decreases the energy transfer efficiency and reproducibility of PDT.Herein,we developed a novel single-molecule triplet photosensitizer(iodoBodipy(IBDP)-L)that can be chemiexcited to triplet excited state to generate reactive oxygen species instead of outer light irradiation.The direct bonding of phthalhydrazid moiety to iodoBodipy fluorophore evoked valid intramolecular energy transfer(IET),and once phthalhydrazid part is activated by hydrogen peroxide,the released reaction energy could excite the iodoBodipy-phthalhydrazid conjugate as a whole.Reaction product IBDP-L-COOH showed high triplet state quantum yield(ΦT=65%)and large spin-orbit coupling.A large amount of reactive oxygen species(ROS)was produced in MCF-7 cells,thus inhibiting the cell growth both in vitro and in vivo after IBDP-L was formulated into nanoparticles(NPs)via nanoprecipitation.We believe that the synthesized IodoBodipy-phthalhydrazid conjugate based on the IET mechanism will open a new door in the molecular design of efficient triplet photosensitizers for treating deeply seated tumors in the future. | Haijun Ning Yuxin Yang Chengyuan Lv Danhong Zhou Saran Long Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng | 2023 | Nano Research2023，16，10： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员