检索结果-南通市图书馆

Synergetic effects of gold-doped copper nanowires with low Au content for enhanced electrocatalytic CO_(2)reduction to multicarbon products

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 7777-7783页

作者： Zongnan Wei shuai yue Shuiying Gao Minna Cao Rong Cao Department of Chemistry University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

As efficient catalysts of electrochemical CO_(2)reduction reaction(CO_(2)RR)towards multicarbon(C_(2+))products,Cu-based catalysts have faced the challenges of increasing the reactive activity and ***,we decorated the surface of Cu nanowires(Cu NWs)with a small amount of Au nanoparticles(Au NPs)by the homo-nucleation *** the Au to Cu mass ratio is as little as 0.7 to 99.3,the gold-doped copper nanowires(Cu-Au NWs)could effectively improve the selectivity and activity of CO_(2)RR to C_(2+)resultants,with the Faradaic efficiency(FE)from 39.7%(Cu NWs)to 65.3%,the partial current density from 7.0(Cu NWs)to 12.1 mA/cm^(2) under−1.25 V *** hydrogen electrode(RHE).The enhanced electrocatalytic performance could be attributed to the following three synergetic *** addition of Au nanoparticles caused a rougher surface of the catalyst,which allowed for more active sites ***,Au sites generated*CO intermediates spilling over into Cu sites with the calculated efficiency of 87.2%,which are necessary for multicarbon ***,the interphase electron transferred from Cu to Au induced the electron-deficient Cu,which favored the adsorption of*CO to further generate multicarbon *** results uncovered the morphology,tandem,electronic effect between Cu NWs and Au NPs facilitated the activity and selectivity of CO_(2)RR to multicarbons.

关键词： electrochemical CO_(2)reduction multicarbon production bimetallic catalyst Cu nanowires Au nanoparticles

Quench dynamics in 1D model with 3rd-nearest-neighbor hoppings

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第2期30卷 86-94页

作者： shuai yue Xiang-Fa Zhou Zheng-Wei Zhou Key Laboratory of Quantum Information Chinese Academy of SciencesHefei 230026China Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China

The non-equilibrium dynamics of a one-dimensional(1 D)topological system with 3 rd-nearest-neighbor hopping has been investigated by analytical and numerical *** analytical form of topological defect density under the periodic boundary conditions(PBC)is obtained by using the Landau-Zener formula(LZF),which is consistent with the scaling of defect production provided by the Kibble-Zurek mechanism(KZM).Under the open boundary conditions(OBC),quench dynamics becomes more complicated due to edge *** behaviors of the system quenching across different phases show that defect production no longer satisfies the KZM paradigm since complicated couplings exist under *** new dynamical features are revealed.

关键词： Kibble-Zurek mechanism Landau-Zener transition topological defect topological insulator

A novel durable intelligent fiber reinforced polymer anchor with embedded optical fiber Bragg grating sensors

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2012年第5期55卷 1455-1462页

作者： HUANG MingHua ZHOU Zhi yue shuai HE JianPing OU JinPing School of Civil Engineering Harbin Institute of TechnologyHarbin 150090China Faculty oflnfrastructure Engineering Dalian University of TechnologyDalian 116024China

Anchors are the key members of the geotechnical anchorage engineering, it is urgent to monitor their behavior in service for preventing the potential risks. This paper proposes a novel durable intelligent fiber reinforced polymer （FRP） anchor to understand the behavior of the anchor in the field application. Series of optical fiber Bragg grating （FBG） sensors were embedded into the central axis along the anchor to sense itself axial strain variations. An evolution model of axial strain was also developed to evaluate the behavior along the anchor. A demonstration test was carried out to test its self-sensing properties in the laboratory. The experimental results indicated that the embedded FBG sensors monitored the behavior, e.g. axial strairl/interfacial damage evolutions along the anchor and displacement/applied load at the pulling end effectively, without influence from the interfacial compression and slip effects.

关键词： anchor fiber reinforced polymer optical fiber Bragg grating evolution model structural health monitoring

Tailoring the surface and interface structures of photocatalysts to enhance hydrogen production

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第4期67卷 1161-1174页

作者： Tao Zhang Pengfei Wang shuai yue Fei Li Zhiyong Zhao Sihui Zhan MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and EngineeringNankai UniversityTianjin 300350China

Photocatalytic water splitting using semiconductor photocatalysts is a promising approach for the production of carbon-neutral,sustainable and clean hydrogen ***,the separation and transport of photoinduced carriers are generally considered to be rate-limiting steps,and their low efficiency remains a major ***,much effort has been devoted to developing new strategies in surface/interface engineering of photocatalysts to improve the dynamics of charge separation/*** feature article briefly summarizes recent advances in photocatalyst surface/interface engineering by our research group,which have been achieved through the design of various novel photocatalysts,including interfacial modulation,heterostructure construction,heteroatom doping,single atom and diatom *** article is divided into three parts:first,we briefly introduce the three key processes involved in solar water splitting and reveal relationships between the properties of nanostructural photocatalysts and the fundamentals of water splitting;second,we detail methods and strategies for surface and interfacial structures to improve the efficiency of the fundamental processes,especially charge separation;finally,we explore prospects for photocatalytic water splitting *** article provides a valuable resource and strategies for researchers currently working in the field of photocatalytic water splitting.

关键词： photocatalytic water splitting surface/interface structures dual-functional photocatalysis

Construction of the Apparatus for Two Dimensional Electronic Spectroscopy and Characterization of the Instrument

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2015年第4期28卷 -页

作者： shuai yue Zhuan Wang Xiao-chuan He Gang-bei Zhu Yu-xiang Weng Laboratory of Soft Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

This work describes the construction of a phase-stable two dimensional electronic spectrometer operating in a photon echo mode with optical heterodyne detection, where the diffractive optics were used to realize the passive phase stabilization. In addition, a high speed and sensitive EMCCD was configured for shot-to-shot measurement which effectively improved signal-to-noise ratio. Consequently, the phase stability between a pulse pair split by the diffractive optics was determined in terms of standard deviation to be λ/200 during an observation period of 30 min, while the phase stability of the photon echo signal measured with IR140 is λ/90 in 19 min. In addition, a method of phase-shift in the pump pulse is also presented, which can effectively remove the interference from scattering light in collection of pump-probe transient absorptionspectrum. The phase-shift method can improve the accuracy of phase adjustment in 2D electronic spectrum of scattering samples.

关键词： Two-dimensional electronic spectroscopy Phase stability Phase adjustment

A Unifi ed View of Carbon Neutrality:Solar-Driven Selective Upcycling of Waste Plastics

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Tianjin University 2024年第1期30卷 1-26页

作者： Zhiyong Zhao shuai yue Gaohua Yang Pengfei Wang Sihui Zhan MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringTianjin 300350China

With the rapid development of plastic production and consumption globally,the amount of post-consumer plastic waste has reached levels that have posed environmental *** the substantial CO_(2)emissions throughout the plastic lifecycle from material production to its disposal,photocatalysis is considered a promising strategy for eff ective plastic recycling and *** can upgrade plastics into value-added products under mild conditions using solar energy,realizing zero carbon *** this paper,we explain the basics of photocatalytic plastic reformation and underscores plastic feedstock reformation pathways into high-value-added products,including both degradation into CO_(2)followed by reformation and direct reformation into high-value-added ***,the current applications of transforming plastic waste into fuels,chemicals,and carbon materials and the outlook on upcycling plastic waste by photocatalysis are presented,facilitating the realization of carbon neutrality and zero plastic waste.

关键词： Photocatalysis Photoreforming Plastics upcycling Carbon neutrality Energy storage and conversion

Electrostatic Field Enhanced Photocatalytic CO_(2) Conversion on BiVO_(4) Nanowires

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2022年第1期14卷 250-261页

作者： shuai yue Lu Chen Manke Zhang Zhe Liu Tao Chen Mingzheng Xie Zhen Cao Weihua Han Key Laboratory for Environmental Pollution Prediction and Control of Gansu Province College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000People’s Republic of China School of Physical Science and Technology Lanzhou UniversityLanzhou 730000People’s Republic of China

The recombination loss of photo-carriers in photocatalytic systems fatally determines the energy conversion efficiency of *** this work,an electrostatic field was used to inhibit the recombination of photo-carriers in photocatalysts by separating photo-holes and photo-electrons in *** a model structure,(010)facet-exposed BiVO_(4)nanowires were grown on PDMS-insulated piezo-substrate of piezoelectric transducer(PZT).The PZT substrate will generate an electrostatic field under a certain stress,and the photocatalytic behavior of BiVO_(4) nanowires is influenced by the electrostatic *** results showed that the photocatalytic performance of the BiVO_(4) nanowires in CO_(2)reduction in the negative electrostatic field is enhanced to 5.5-fold of that without electrostatic ***,the concentration of methane in the products was raised from 29% to 64%.The enhanced CO_(2) reduction efficiency is mainly attributed to the inhibited recombination loss of photo-carriers in the BiVO_(4) *** increased energy of photo-carriers and the enhanced surface absorption to polar molecules,which are CO in this case,were also play important roles in improving the photocatalytic activity of the photocatalyst and product *** work proposed an effective strategy to improve photo-carriers separation/transfer dynamics in the photocatalytic systems,which will also be a favorable reference for photovoltaic and photodetecting devices.

关键词： Photocatalysis CO_(2)reduction Electrostatic field BiVO_(4)nanowires

Development of aryl-containing dipyrrolyldiketone difluoroboron complexes(BONEPYs):Tune the hydrogen bond o-C—H…F for fluoride recognition

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第5期31卷 1317-1321页

作者： Xin-Dong Jiang Zhumei Shao Changliang Sun shuai yue Rong Shang Yohsuke Yamamoto College of Applied Chemistry Shenyang University of Chemical TechnologyShenyang 110142China Department of Chemistry Graduate School of ScienceHiroshima UniversityHigashi-Hiroshima 739-8526Japan

Dipyrrolyldiketone difluoroboron complexes(BONEPYs)were synthesized by condensation of the corresponding pyrroles and malonyl chloride followed by treatment with BF3·*** aryl-substituted pyrrole is introduced to form a cyclic system in order to investigate anion binding *** BONEPYs 1-3 the o-H of the aryl group forms hydrogen bonding with F to give a more table *** contrast,the intramolecular hydrogen-bonded BONEPY endo-4 is more stable than its exo *** adding F,the hydrogen bonds must be broken first to give 4·(3)*** to the electron-rich group(-OMe),the o-H of the phenyl group can hardly interact with F via hydrogen bonding to give the less stable complex4-(5)*** energy diffe rences between the different conformations were calculated using DFT methods,which is consistent to the experimental observations.

关键词： BONEPY Hydrogen bond Fluorescent dye Fluoride anion Probe

Oxidative damage in the kidney and brain of mice induced by different nano-materials

在线全文

学校读者我要写书评

暂无评论

Frontiers in Biology 2015年第1期10卷 91-96页

作者： shuai SHANG Shang-yue YANG Zhi-Min LIU Xu YANG College of Life Sciences Central China Normal University Wuhan 430079 China

With the rapid development of nanotechnology, nanomaterials have been used in numerous fields. However, these nanomaterials could also result in risk for human and environmental health. To make a comparison of the health effects of three different kinds of nanomaterials, 28 male BALB/c mice were randomly divided into four groups. Three experimental groups were exposed to different kinds of nanomaterials including graphene, graphene oxide and single wall carbon nanotubes （SWCNTs） by intraperitoneal injection while the control group received a saline injection. The exposure dose of experimental groups was 4mg/kg. After seven days, sections of mice kidney were taken, the organ coefficient of both kidney and brain was counted, and the reactive oxygen species （ROS） level, glutathione （GSH） and malondialdehyde （MDA） content was measured. Our results showed that in the experimental groups, the organ coefficient and GSH content in mice kidneys and brains decreased, whereas the ROS level and MDA content increased, when compared with the control. The graphene oxide group was statistically significant （p 〈 0.05）, while the SWCNTs group had extremely significant difference （p〈0.01）. Morphological changes in the kidney were also seen in the experimental groups. These results demonstrate that oxidative damage to mice kidneys and brains induced by SWCNTs and graphene oxide is more severe than graphene. The degree of damage caused by these three typical nanomaterials is different, probably due to several parameters including particle size, surface character, and shape.

关键词： graphene graphene oxide single wall carbon nanotubes oxidative damage