|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | N-doped carbon dots coupled NiFe-LDH hybrids for robust electrocatalytic alkaline water and seawater oxidation显示文摘Electrolysis of seawater offers a highly promising and sustainable route to attain carbon-neutral hydrogen energy without demanding on high-purity water resource.However,it is severely limited by the undesirable chlorine oxidation reaction(ClOR)on the anode and the releasing toxic chlorine species,inducing anode corrosion and multiple pollutions to reduce the efficiency and sustainability of this technology.The effective way is to limit the overpotential of oxygen evolution reaction(OER)below 480 mV and thus suppress the ClOR.Herein,we demonstrate that nitrogen-doped carbon dots strongly coupled NiFe layered double hydroxide nanosheet arrays on Ni foam(N-CDs/NiFe-LDH/NF)can efficiently facilitate OER with an ultralow overpotential of 260 mV to deliver the geometric current density of 100 mA·cm^(−2)and a Tafel slope of as low as 43.4 mV·dec−1 in 1.0 M KOH.More importantly,the N-CDs/NiFe-LDH/NF electrode at 100 mA·cm^(−2)shows overpotentials of 285 and 273 mV,respectively,by utilizing 1.0 M KOH with 0.5 M NaCl and 1.0 M KOH with 1.0 M NaCl as the simulated seawater,well avoid triggering ClOR.Notably,despite the complex environment of real seawater,N-CDs/NiFe-LDH/NF still effectively promotes alkaline seawater(1.0 M KOH+seawater)electrolysis with a lifetime longer than 50 and 20 h,respectively,in 1.0 M KOH and alkaline seawater electrolytes.The investigation result reveals that M–N–C bonding generated between N-CDs and NiFe-LDH intrinsically optimizes the charge transfer efficiency,further promoting the OER kinetics. | Peng Ding Haoqiang Song Jiangwei Chang Siyu Lu | 2022 | Nano Research2022，15，8： | 3 |
| 2 | Identification of Nonstructural Protein 8 as the N-Terminus of the RNA-Dependent RNA Polymerase of Porcine Reproductive and Respiratory Syndrome Virus显示文摘Porcine reproductive and respiratory syndrome virus (PRRSV) is a member within the family Arteriviridae of the order Nidovirales. Replication of this positive-stranded RNA virus within the host cell involves expression of viral replicase proteins encoded by two ORFs, namely ORF1 a and ORF1 b. In particular, translation of ORF1 b depends on a-1-ribosomal frameshift strategy. Thus, nonstructural protein 9 (nsp9), the first protein within ORF1 b that specifies the function of the viral RNA-dependent RNA polymerase, is expressed as the C-terminal extension of nsp8, a small nsp that is encoded by ORF1 a. However, it has remained unclear whether the mature form of nsp9 in virus-infected cells still retains nsp8,addressing which is clearly critical to understand the biological function of nsp9. By taking advantage of specific antibodies to both nsp8 and nsp9, we report the following findings. (1) In infected cells, PRRSV nsp9 was identified as a major product with a size between 72 and 95 k Da (72–95 KDa form), which exhibited the similar mobility on the gel to the in vitro expressed nsp8–9 ORF1 b, but not the ORF1 b-coded portion (nsp9 ORF1 b). (2) The antibodies to nsp8, but not to nsp7 or nsp10, could detect a major product that had the similar mobility to the 72–95 KDa form of nsp9. Moreover, nsp9 could be co-immunoprecipitated by antibodies to nsp8, and vice versa. (3) Neither nsp4 nor nsp2 PLP2 was able to cleave nsp8–nsp9 in vitro. Together, our studies provide experimental evidence to suggest that nsp8 is an N-terminal extension of nsp9.Our findings here paves way for further charactering the biological function of PRRSV nsp9. | Yuanyuan Liu Yunhao Hu Yue Chai Liping Liu Jiangwei Song Shaochuan Zhou Jia Su Lei Zhou Xinna Ge Xin Guo Jun Han Hanchun Yang | 2018 | Virologica Sinica2018，33，5： | 3 |
| 3 | Coordinated grain boundary deformation governed nanograin annihilation in shear cycling显示文摘Grain growth and shrinkage are essential to the thermal and mechanical stability of nanocrystalline metals,which are assumed to be governed by the coordinated deformation between neighboring grain boundaries(GBs)in the nanosized grains.However,the dynamics of such coordination has rarely been reported,especially in experiments.In this work,we systematically investigate the atomistic mechanism of coordinated GB deformation during grain shrinkage in an Au nanocrystal film through combined stateof-the-art in situ shear testing and atomistic simulations.We demonstrate that an embedded nanograin experiences shrinkage and eventually annihilation during a typical shear loading cycle.The continuous grain shrinkage is accommodated by the coordinated evolution of the surrounding GB network via dislocation-mediated migration,while the final grain annihilation proceeds through the sequential dislocation-annihilation-induced grain rotation and merging of opposite GBs.Both experiments and simulations show that stress distribution and GB structure play important roles in the coordinated deformation of different GBs and control the grain shrinkage/annihilation under shear loading.Our findings establish a mechanistic relation between coordinated GB deformation and grain shrinkage,which reveals a general deformation phenomenon in nanocrystalline metals and enriches our understanding on the atomistic origin of structural stability in nanocrystalline metals under mechanical loading. | Yingbin Chen Qishan Huang Qi Zhu Kexing Song Yanjun Zhou Haofei Zhou Jiangwei Wang | 2021 | Journal of Materials Science & Technology2021，，27： | 1 |
| 4 | Organic tern plate-free synthesis of ZSM-34 zeolite from an assistance of zeolite L seeds solution显示文摘 | Wu Zhifeng Song Jiangwei Ji Yanyan | 2007 | Chemistry of Materials2007，20，2： | 1 |
| 5 | Effect of Epsl gene deletion in Saccharomyces cerevisiae on the secretion of foreign proteins which have disulfide bridges显示文摘 | HE Jiangwei SAKAMOTO T SONG Youtao | 2005 | FEBS Letters2005，579，11： | 1 |
| 6 | Construction of isolated Ni sites on nitrogen-doped hollow carbon spheres with Ni-N_(3) configuration for enhanced reduction of nitroarenes显示文摘Designing and synthesizing high-efficiency non-precious metal-based catalysts having uniform active sites increases the reactivity and selectivity of materials and provides a platform for an in-depth understanding of their catalytic reaction mechanism.In this study,we provided an approach for fabricating isolated nickel single-atom sites(Ni SAs)with high loading(4.9 wt.%)stabilized on nitrogen-doped hollow carbon spheres(NHCS)using a core–shell structured Zn/Ni bimetallic zeolitic imidazolate framework(ZIF)composite as the sacrificial template.The as-fabricated Ni SAs/NHCS catalyst shows superior activity,selectivity,and recycling durability for the catalytic transfer hydrogenation of nitrobenzene to aniline,thus achieving 100%yield of aniline with a turn-over frequency(TOF)value as high as 29.9 h^(−1) under mild conditions.This TOF value is considerably superior to the supported Ni nanoparticle catalysts.The experiments designed show that the hollow structure feature of NHCS facilitates accessible active sites and mass transfer,which thus contributes to the enhancement of the catalytic performance of Ni SAs/NHCS.Density functional theory calculations show the high chemo-selectivity and activity of the Ni SAs catalyst,arising from the unique role of the single Ni-N3 site on simultaneously activating the H donor(N_(2)H_(4))and substrate,as well as the hydrogenation of the–NOH group as the rate-determining step. | Binbin Feng Rou Guo Qiulan Cai Yaping Song Nan Li Yanghe Fu De-Li Chen Jiangwei Zhang Weidong Zhu Fumin Zhang | 2022 | Nano Research2022，15，7： | 0 |
| 7 | Performance Development Target Setting of Passenger Car Diesel Engine显示文摘Setting engine emission targets to meet diesel car requirements is particularly important in engine performance development phase. Many researches are focused on associating vehicle performance with engine targets, but most work is done by testing, which is time and cost consuming, furthermore, the relationship of vehicle and engine will change when either engine or vehicle changes. A GT-Drive model to simulate New European Driving Cycle (NEDC) for passenger car is developed and calibrated by testing data, model precision is controlled within 5%. Time distribution of engine operating conditions when car running NEDC cycle has been analyzed, 10 critical major engine operating points are summarized according to running time proportion. Emission of NOx and smoke control regions containing these 10 points for target engine are set. Vehicle emissions are simulated and evaluated during engine development after engine performance test data are got, and engine combustion system layout and calibration are adjusted until vehicle targets are met. Vehicle is tested in chassis dynamometer finally, the testing results show a good agreement with the simulated results with an error of less than 5%, which proves that the emission value exchange of vehicle and engine is reliable. Performance target decomposition method for passenger car diesel presented can greatly shorten the development cycle and save costs. | ZHENG Guangyong YU Xiumin LIU Jiangwei SONG Tao LI Wenxiang | 2013 | Chinese Journal of Mechanical Engineering2013，26，3： | 0 |
| 8 | Design strategies towards transition metal single atom catalysts for the oxygen reduction reaction-A review显示文摘The electrochemical oxygen reduction reaction(ORR)is pivotal in energy conversion via a 4e-ORR pathway and green hydrogen peroxide production via 2e-ORR pathway.Transition metal single atom catalysts(TM SACs)have attracted intense attention in recent years for ORR due to their high activity and near maximum metal atom utilization.The future development of TM SACs for ORR requires improved understanding of reaction pathways,since currently the true origin of activity remains contentious owing to the lack of qualitative/quantitative information about active sites.Knowledge-guided design is imperative for the optimization of TM SACs performance in terms of activity and selectivity.This review focuses on the latest progress in the design of TM SACs for ORR,placing particular attention on efforts to elucidate reaction mechanisms.Experimental evidence based on in-situ/operando characterization measurements,along with theoretical predictions,are summarized to deepen understanding of the structure-performance relationships at both atomic and molecular level.Finally,some perspectives are offered relating to the fundamental science needed for TM SACs to find practical application in energy storage and conversion devices.We hope this review will inspire the development of new synthetic routes towards high-performance ORR electrocatalysts for the energy sector. | Yaojia Cheng Hao Wang Haoqiang Song Kan Zhang Geoffrey I.N.Waterhouse Jiangwei Chang Zhiyong Tang Siyu Lu | 2023 | Nano Research Energy2023，2，4： | 0 |
| 9 | Effect of cerium on microstructure,texture and properties of ultrahigh-purity copper显示文摘The effects of Ce addition(310 ppm and 1500 ppm)on the microstructure,texture and properties of ultrahigh-purity copper(99.99999%)were systematically studied using scanning electron microscopy(SEM),transmission electron microscopy(TEM)and electron backscattered diffraction(EBSD)analyses,combined with the microhardness and conductivity tests.Regarding the microstructure of the as-cast and as-extruded samples,the addition of Ce refines the grain size of the ultrahigh-purity copper and the refinement effect of 310Ce alloy is greater than that of 1500Ce alloy.This is due to the stronger compone nt supercooling and the accele rated recrystallization caused by lower Ce co ntent.In addition,Ce can react with Cu to form the Cu-Ce eutectic phases,which are deformable during the hot deformation.Furthermore,the added Ce can weaken the texture,showing a variation of brass recrystallization(BR),rotated cube,copper and S texture components,which depends on the recrystallization,the particle stimulated nucleation(PSN)as well as the stacking fault energy(SFE).Most remarkably,the introduction of Ce enhances the hardness of the ultrahigh-purity copper without obviously reducing its conductivity.The major{111}orientations and the stress distributions are responsible for such a superior conductivity of the Ce-containing alloys. | Yunxiao Hua Haitao Liu Kexing Song Jiangwei Wang Yin'gang Guo Jing Tian Huiwen Guo | 2024 | Journal of Rare Earths2024，42，1： | 0 |
| 10 | Knowledge Mapping of Opuntia Milpa Alta Since 1998: A Scientometric Analysis显示文摘Opuntia Milpa Alta is a cactus cultivated,domesticated,hybridized and selected from the plant Opuntia ficusindica by Mexican agricultural experts,which can be used as fruit and vegetable.Opuntia Milpa Alta leaves and fruit are superior to wild varieties and suitable for storage and transportation.In 1998,Opuntia Milpa Alta was introduced to China from Mexico by the Quality Product Development Center of the Ministry of Agriculture of China.Up to now,the Opuntia Milpa Alta has been cultivated on a certain scale in China.This study aims to identify the research progress and development trends of Opuntia Milpa Alta in China.Papers published between 1998 to 2019 from two major Chinese academic databases(CNKI and Wangfang)with a topic search related to Opuntia Milpa Alta were collected.The research progress and development trends were analyzed based on CiteSpace software of text mining and visualization.The analysis found that Opuntia Milpa Alta has gone through three obvious research phases after being introduced to China.In the first phase,the researchers paid attention to its cultivation method.Subsequently,researchers began to use extraction methods to extract some of its components,such as polysaccharides and flavonoids.Finally,these extracted ingredients began to be used in some biomedical research. | Meixiang Chen Hong Yang Zhengda Song Yonghua Gu Yuhong Zheng Jiangwei Zhu Aiwu Wang Li Fu | 2021 | Phyton-International Journal of Experimental Botany2021，90，5： | 0 |
| 11 | In situ atomistic observation of the deformation mechanism of Au nanowires with twin–twin intersection显示文摘Twin–twin intersections are often observed in face-centered cubic(FCC)metallic nanostructures,which have important contributions to the plastic deformation and strengthening of FCC metals with low stacking fault energies.However,a deep insight into the underlying mechanism involved in the formation and evolution of twin–twin intersections remains largely lacking,especially in experiments.Here,by conducting the in situ straining experiments under high resolution transmission electron microscope(TEM),we directly visualize the dynamic evolution of a twin–twin intersection in Au nanowire at the nanoscale.It shows that dislocations in the incoming twin can either glide onto or transmit across the barrier twin via dislocation interaction with the twin boundary,resulting in the twin–twin intersection.Dynamic twinning and de-twinning of the twin–twin intersection govern the whole deformation of the nanowire.These findings reveal the dynamic behaviors of twin–twin intersection under mechanical loading,which benefits further exploration of FCC metals and engineering alloys with twin–twin intersection structures. | Shuchun Zhao Qi Zhu Xianghai An Hua Wei Kexing Song Scott X.Mao Jiangwei Wang | 2020 | Journal of Materials Science & Technology2020，52，18： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员