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24篇 您的检索式:作者名="Xusheng Zheng"
    题名 作者 年代 出处 被引量
1Cobalt single atom site catalysts with ultrahigh metal loading for enhanced aerobic oxidation of ethylbenzene显示文摘The oxidation of hydrocarbons to produce high value-added compounds(ketones or alcohols)using oxygen in air as the only oxidant is an efficient synthetic strategy from both environmental and economic views.Herein,we successfully synthesized cobalt single atom site catalysts(Co SACs)with high metal loading of 23.58 wt.%supported on carbon nitride(CN),which showed excellent catalytic properties for oxidation of ethylbenzene in air.Moreover,Co SACs show a much higher turn-over frequency(19.6 h^(−1))than other reported non-noble catalysts under the same condition.Comparatively,the as-obtained nanosized or homogenous Co catalysts are inert to this reaction.Co SACs also exhibit high selectivity(97%)and stability(unchanged after five runs)in this reaction.DFT calculations reveal that Co SACs show a low energy barrier in the first elementary step and a high resistance to water,which result in the robust catalytic performance for this reaction.Yu Xiong Wenming Sun Yunhu Han Pingyu Xin Xusheng Zheng Wensheng Yan Juncai Dong Jian Zhang Dingsheng Wang Yadong Li 2021Nano Research2021,14,7:20
2Enhancing both selectivity and coking-resistance of a single-atom Pd1/C3N4 catalyst for acetylene hydrogenation显示文摘选择加氢是在化学升级的一个重要工业催化过程,在因为他们的高加氢活动,基于 Pd 的催化剂广泛地被使用的地方。然而,因为重焦炭形成,差的选择和短催化剂一生是主要担心。在这个工作,原子地驱散 Pd 原子成功地在 graphitic 碳氮化物上被综合(g-C 3 用原子层免职的 N 4) 。没有 Pd nanoparticle (NP ) ,改正错误的高角度的环形的黑暗地的扫描传播电子显微镜学(HAADF 茎) 证实了孤立的 Pd 原子的主导的存在形成。在在过量乙烯的乙炔的选择加氢期间, g-C 3 N 4-supported Pd NP 催化剂比常规 Pd/Al 2 O 3 和 Pd/SiO 2 催化剂。在原处, X 光检查光致核裂变光谱学表明可观的费用从 Pd NP 转到 g-C 3 N 4 多半在催化表演改进起一个重要作用。更给人深刻印象地,单个原子的 Pd 1/C3 N 4 催化剂展出了两种更高的乙烯选择和更高的 coking 抵抗。我们的工作证明单个原子的 Pd 催化剂是在加氢反应改进选择和焦炭抵抗的一个有希望的候选人。Xiaohui Huang Yujia Xia Yuanjie Cao Xusheng Zheng Haibin Pan Junfa Zhu Chao Ma Hengwei Wang Junjie Li Rui You Shiqiang Wei Weixin Huang Junling Lu 2017Nano Research2017,10,4:16
3Synthesis, mechanical investigation, and application of nitrogen and phosphorus co-doped carbon dots with a high photoluminescent quantum yield显示文摘有高 photoluminescent 量收益(PLQY ) 的做 Heteroatom 的碳点(CD ) 最近在化学传感器,光催化, bioimaging,和药交货中由于他们的应用吸引了注意。氮和磷在到在周期表的碳的靠近的最近并且是关键的在生物医学的成像的地里追踪元素。这二个元素改变 CD 的光、电子的性质并且帮助改进他们的 PLQY 的基本理解。这能也在 photoimaging 和 photothermal 治疗导致多功能的用法。然而,源于做 P 的 CD 的合成的大多数 PLQY 当前低于 50% 。这些 CD 在 bioimaging 和药交货的地里限制了实用性。在这研究,一个单个步的、高效率的热水的方法被使用综合氮和磷药的碳点((N, P ) 有有独立排放的多达 53.8% 的 PLQY 的 -CDs) 行为。而且, CD 在一个大 pH 范围上介绍了高 monodispersity,柔韧的刺激无关的光,和稳定性。分光镜的调查显示 PLQY (N, P ) CD 主要由于 P 的增加和氧化表面的钝化效果。优秀荧光性质(N, P ) CD 能被 Hg 2+ 离子有效地并且有选择地熄灭。如此的系统与一短反应时间在 0-900 nM 集中范围显示出线性回答,显示他们为化学和生物学的领域里的应用程序的潜力。Quan Xu Bofan Li Yingchun Ye Wei Cai Weijun Li Chuanyao Yang Yusheng Chen Meng Xu Neng Li Xusheng Zheng Jason Street Yan Luo Lulu Cai 2018Nano Research2018,11,7:7
4In situ trapped high-density single metal atoms within graphene: Iron-containing hybrids as representatives for efficient oxygen reduction显示文摘因为他们为特殊催化作用的效率和 chemoselectivity 比传统的催化剂的那些优异,原子地驱散的催化剂在精力变换应用吸引了注意。然而,他们在支持上由于极其低的装载金属的内容有限制,在在高温度的金属地点和数量以及低稳定性的精确控制的困难。我们经由葡萄糖, dicyandiamide,和无机的金属盐的单个步的热热分解准备了一个高度做的单个金属原子混血儿。高角度的环形的黑暗扫描地的传播电子显微镜学(HAADF 茎) 和 X 光检查吸收罚款结构光谱学(XAFS ) 表明做进 graphene 矩阵的氮原子为由产生 metal-Nx 协作结构的金属原子稳定是枢轴的。由于 graphene 矩阵的强壮的抛锚效果,装载内容的金属是在孤立的原子混血儿的超过 4 wt.%( 磅内容象在做磅的混血儿的 9.26 wt.% 一样高) 。而且,单个做铁的混血儿(做 Fe@N 的 graphene ) 为氧减小反应显示出显著 electrocatalytic 表演。山峰力量密度是 199Daobin Liu Chuanqiang Wu Shuangming Chen Shiqing Ding Yaofeng Xie Changda Wang Tao Wang Yasir A. Haleem Zia ur Rehman Yuan Sang Qin Liu Xusheng Zheng Yu Wang Binghui Ge Hangxun Xu Li Song 2018Nano Research2018,11,4:6
5Precise fabrication of single-atom alloy co-catalyst with optimal charge state for enhanced photocatalysis显示文摘While the surface charge state of co-catalysts plays a critical role for boosting photocatalysis,studies on surface charge regulation via their precise structure control remain extremely rare.Herein,metal-organic framework(MOF)stabilized bimetallic Pd@Pt nanoparticles,which feature adjustable Pt coordination environment and a controlled structure from core-shell to single-atom alloy(SAA),have been fabricated.Significantly,apart from the formation of a Mott-Schottky junction in a conventional way,we elucidate that Pt surface charge regulation can be alternatively achieved by changing its coordination environment and the structure of the Pd@Pt co-catalyst,where the charge between Pd and Pt is redistributed.As a result,the optimized Pd10@Pt1/MOF composite,which involves an unprecedented SAA co-catalyst,exhibits exceptionally high photocatalytic hydrogen production activity,far surpassing its corresponding counterparts.Yating Pan Yunyang Qian Xusheng Zheng Sheng-Qi Chu Yijun Yang Chunmei Ding Xi Wang Shu-Hong Yu Hai-Long Jiang 2021National Science Review2021,8,1:4
6Nitrogen doped FeS_(2) nanoparticles for efficient and stable hydrogen evolution reaction显示文摘Performance breakthrough of electrocatalysts highly relies on the regulation of internal structures and electronic states.In present work,for the first time,we successfully synthesized nitrogen doped FeS_(2) nanoparticles(N-FeS_(2))as the electrocatalysts for hydrogen evolution reaction(HER).The band structure and electronic state of FeS_(2) are modulated by a nitrogen doping strategy,as confirmed by X-ray photoelectron spectroscopy(XPS),X-ray absorption spectroscopy(XAS)and density functional theory(DFT)calculations.Owing to the band structure and electronic state regulation as well as the weakening of H-S interaction,the designed N-FeS_(2) electrocatalyst exhibits superior catalytic performance with a low overpotential(~126 mV at 10 mA cm^(-2))and excellent activity stability under alkaline conditions,which is substantially improved as compared with that of the pure FeS_(2) counterpart.Our work demonstrates that the modulation of electron state and band structure of an electrocatalyst,which can provide a valuable guidance for designing excellent catalysts for hydrogen evolution reaction and beyond.Jian Ye Yipeng Zang Qingyu Wang Yida Zhang Da Sun Leijie Zhang Gongming Wang Xusheng Zheng Junfa Zhu 2021Journal of Energy Chemistry2021,30,5:2
7Active {010} facet-exposed Cu2MoS4 nanotube as high-efficiency photocatalyst显示文摘Ke Zhang Yunxiang Lin Zahir Muhammad Chuanqiang Wu Shuang Yang Qun He Xusheng Zheng Shuangming Chen Binghui Ge Li Song 2017Nano Research2017,10,11:1
8Shape-controlled synthesis and assembly of copper sulfide nanoparticles显示文摘Xusheng Du Maosong Mo Rongkun Zheng 2008Cryst Crowth Des2008,8,6:1
9Enhanced O2 reduction on atomically thin Pt-based nanoshells by integrating surface facet, interfacial electronic, and substrate stabilization effects显示文摘Wei Ye Zhongti Sun Chengming Wang Mengshan Ye Chenhao Ren Ran Long Xusheng Zheng Junfa Zhu Xiaojun Wu Yujie Xiong 2018Nano Research2018,11,6:1
10Tailoring the adsorption behavior of superoxide intermediates on nickel carbide enables high-rate Li-O_(2) batteries显示文摘Probing the relationship between the adsorption of superoxide species and the kinetics of Li-O_(2) chemistry is critical for designing superior oxygen electrodes for the Li-O_(2) battery,yet the modulation essence,especially at the atomic level,remains little understood.Herein,we reveal that the adsorption behaviors of superoxide species can be effectively regulated via a core-induced interfacial charge interaction,and we find that moderate adsorption strength can enable superior rate capability in a Li-O_(2) battery.More importantly,operando X-ray absorption near-edge structure and surface-enhanced Raman spectroscopy provide tools to monitor in situ the evolution of the superoxide intermediates and the electronic states of the catalyst's metal sites during the discharge and charge processes,and correlate these with the surface adsorption states.The concept of tuning adsorption behavior through interfacial charge engineering could open up new opportunities to further advance the development of the Li-O_(2) battery and beyond.Yun Liu Jinyan Cai Jianbin Zhou Yipeng Zang Xusheng Zheng Zixuan Zhu Bo Liu Gongming Wang Yitai Qian 2022eScience2022,2,4:1
11A novel in vivo siRNA delivery system specifically targeting dendritic cells and silencing CD40 genes for immunomodulation显示文摘Xiufen Zheng Costin Vladau Xusheng Zhang 2009Blood2009,113,12:1
12Oxygen modified CoP2 supported palladium nanoparticles as highly efficient catalyst for hydrolysis of ammonia borane显示文摘Ammonia borane(AB)is regarded as a promising chemical hydrogen-storage material due to its high hydrogen content,nontoxicity,and long-term stability under ambient temperature.However,constructing advanced catalysts to further promote the hydrogen production still remains a challenge for the hydrolysis of AB.Herein,we report a novel oxygen modified CoP_(2)(O-CoP_(2))material with dispersed palladium nanoparticles(Pd NPs)as a highly efficient and sustainable catalyst for AB hydrolysis.The modification of oxygen could optimize the catalytic synergy effect between CoP_(2)and Pd NPs,achieving enhanced catalytic activity with a turnover frequency(TOF)number of 532 min^(-1)and an activation energy(E_(a))value of 16.79 kJ·mol^(-1).Meanwhile,reaction kinetic experiments prove that the activation of water is the rate-determining step(RDS).The water activation mechanism is revealed by quasi in-situ X-ray photoelectron spectroscopy(XPS)and in-situ X-ray absorption fine structure(XAFS)measurements.The activation of water leads to the production of-H and-OH groups,which are further adsorbed on the oxygen atoms in P-O bond and Pd atoms,respectively.In addition,density functional theory(DFT)calculations indicate that the introduced oxygen facilitates the adsorption and activation of water molecules.This novel modulation strategy successfully sheds new light on the development of advanced catalysts for hydrolysis of AB and beyond.Leijie Zhang Jian Ye Yi Tu Qingyu Wang Haibin Pan Lihui Wu Xusheng Zheng Junfa Zhu 2022Nano Research2022,15,4:1
13Surface modification of MoS_(2) nanosheets by single Ni atom for ultrasensitive dopamine detection显示文摘Single atom catalysts have been recognized as potential catalysts to fabricate electrochemical biosensors,due to their unexpected catalytic selectivity and activity.Here,we designed and fabricated an ultrasensitive dopamine(DA)sensor based on the flower-like MoS_(2) embellished with single Ni site catalyst(Ni-MoS_(2)).The limit of detection could achieve 1 pM in phosphate buffer solution(PBS,pH=7.4),1 pM in bovine serum(pH=7.4),and 100 pM in artificial urine(pH=6.8).The excellent sensing performance was attributed to the Ni single atom axial anchoring on the Mo atom in the MoS_(2) basal plane with the Ni-S_(3) structure.Both the experiment and density functional theory(DFT)results certify that this structural feature is more favorable for the adsorption and electron transfer of DA on Ni atoms.The high proportion of Ni active sites on MoS_(2) basal plane effectively enhanced the intrinsic electronic conductivity and electrochemical activity toward DA.The successful establishment of this sensor gives a new guide to expand the field of single atom catalyst in the application of biosensors.Xuejiao Sun Cai Chen Can Xiong Congmin Zhang Xusheng Zheng Jin Wang Xiaoping Gao Zhen-Qiang Yu Yuen Wu 2023Nano Research2023,16,1:0
14A Supported Palladium on Gallium-based Liquid Metal Catalyst for Enhanced Oxygen Reduction Reaction显示文摘Developing high-performance catalysts for oxygen reduction reaction to replace costly platinum-based materials is of great importance but still confronted with challenges.Herein,a kind of supported palladium liquid metal catalyst,which is prepared by galvanic replacement,surpasses commercial Pt/C and Pd/C in oxygen reduction catalysis with a higher half-wave potential of 0.92 V,mass activity of 1.85 A/mgPd at 0.90 V,and superior durability.The liquid metal support can both optimize the electronic structures of Pd sites and guarantee the dispersion of Pd atoms,which explains the enhanced activity and durability,respectively.This work opens an avenue for rational design of catalysts.MA Chunrong SONG Bingyi MA Zhentao WANG Xiaoqian TIAN Lin ZHANG Haoran CHEN Cai ZHENG Xusheng YANG Li-ming WU Yuen 2022Chemical Research in Chinese Universities2022,38,5:0
15Cu_(2+1)O/CuO_(x)heterostructures promote the electrosynthesis of C^(2+)products from CO_(2)显示文摘Manipulating the oxidation state of Cu catalysts can significantly affect the selectivity and activity of electrocatalytic carbon dioxide reduction(CO_(2)RR).However,the thermodynamically favorable cathodic reduction to metallic states typically leads to catalytic deactivation.Herein,a defect construction strategy is employed to prepare crystalline/amorphous Cu_(2+1)O/CuO_(x)heterostructures(c/a-CuO_(x))with abundant Cu0 and Cuδ+(0<δ<1)sites for CO_(2)RR.The C^(2+)Faradaic efficiency of the heterostructured Cu catalyst is up to 81.3%,with partial current densities of 406.7 mA·cm−2.Significantly,real-time monitoring of the Cu oxidation state evolution by in-situ Raman spectroscopy confirms the stability of Cuδ+species under long-term high current density operation.Density functional theory(DFT)calculations further reveal that the adjacent Cu0 and Cuδ+sites in heterostructured c/a-CuO_(x)can efficiently reduce the energy barrier of CO coupling for C^(2+)products.Rongbo Sun Cong Wei Zixiang Huang Shuwen Niu Xiao Han Cai Chen Haoran Wang Jia Song Jun-Dong Yi Geng Wu Dewei Rao Xusheng Zheng Yuen Wu Gongming Wang Xun Hong 2023Nano Research2023,16,4:0
16Study on the Land Reclamation of Oilfield of Gurbantunggut Desert in Junggar Basin显示文摘The exploration and development of oilfield results in damages to land resources. Along with the further development of petroleum in the Gurbantunggut Desert, the fragile ecological environment and land resource was suffering much more damage. Vegetation degradation and desertification become more prominent. In response to the damage to the fragile ecological environment and oilfield in the Gurbantunggut Desert, limit condition method was used to evaluate the suitability of land reclamation suitability. Results suggested that the main restraining factors for land reclamation were soil condition and water resources. Based on the effect and shortage of oilfield in the Gurbantunggut Desert Oilfield, the reclamation of oilfield in the Gurbantunggut desert was discussed.Liang LI Xuezhong ZHENG Xusheng SHAO Caichuan WANG Min Xu 2013Asian Agricultural Research2013,5,5:0
17Low-coordination environment design of single Co atoms for efficient CO_(2) photoreduction显示文摘Photocatalytic carbon dioxide(CO_(2))to carbon monoxide(CO)offers a promising way for both alleviating the greenhouse effect and meeting the industrial demand.Herein,we constructed a Co single-atom catalyst with intentional low-coordination environment design on porous ZnO(denoted as Co1/ZnO).Impressively,Co1/ZnO exhibited a remarkable activity with a CO yield rate of 22.25 mmol·g^(-1)·h^(-1) and a selectivity of 80.2%for CO_(2) photoreduction reactions under visible light.The incorporation of single Co atoms provided an additional photo-generated electron transfer channel,which suppressed the carrier recombination of photocatalysts.Moreover,the unsaturated Co active sites were capable to adsorb CO_(2) molecule spontaneously,thus facilitating the activation of CO_(2) molecule during CO_(2) reduction course.Zhentao Ma Qingyu Wang Limin Liu Rong-Ao Zhang Qichen Liu Peigen Liu Lihui Wu Chengyuan Liu Yu Bai Yida Zhang Haibin Pan Xusheng Zheng 2024Nano Research2024,17,5:0
18Seco-cyclic phorbol derivatives and their anti-HIV-1 activities显示文摘Phorbol esters are recognized for their dual role as anti-HIV-1 agents and as activators of protein kinase C(PKC).The efficacy of phorbol esters in binding with PKC is attributed to the presence of oxygen groups at positions C20,C3/C4,and C9 of phorbol.Concurrently,the lipids located at positions C12/C13 are essential for both the anti-HIV-1 activity and the formation of the PKC-ligand complex.The influence of the cyclopropane ring at positions C13 and C14 in phorbol derivatives on their anti-HIV-1 activity requires further exploration.This research entailed the hydrolysis of phorbol,producing seco-cyclic phorbol derivatives.The anti-HIV-1 efficacy of these derivatives was assessed,and the affinity constant(Kd)for PKC-δprotein of selected seco-cyclic phorbol derivatives was determined through isothermal titration calorimetry.The findings suggest that the chemical modification of cyclopropanols could affect both the anti-HIV-1 activity and the PKC binding affinity.Remarkably,compound S11,with an EC50 of 0.27μmol·L^(−1) and a CC50 of 153.92μmol·L^(−1),demonstrated a potent inhibitory effect on the intermediate products of HIV-1 reverse transcription(ssDNA and 2LTR),likely acting at the viral entry stage,yet showed no affinity for the PKC-δprotein.These results position compound S11 as a potential candidate for further preclinical investigation and for studies aimed at elucidating the pharmacological mechanism underlying its anti-HIV-1 activity.HUANG Xiaolei HUANG Xusheng LI Qirun MA Mengdi CUI Yadong YANG Liumeng WANG Haibo LUO Ronghua CHEN Jinglei YANG Jingxuan LIN Jinrong LI Duxin ZHENG Yongtang ZHANG Jian 2024Chinese Journal of Natural Medicines2024,22,4:0
19Grain boundaries modulating active sites in RhCo porous nanospheres for efficient CO2 hydrogenation显示文摘Xusheng Zheng Yue Lin Haibin Pan Lihui Wu Wei Zhang Linlin Cao Jing Zhang Lirong Zheng Tao Yao 2018Nano Research2018,11,5:0
20The Controllability of Quantum Correlation under Geometry and Entropy Discords显示文摘Quantum correlation plays a critical role in the maintenance of quantum information processing and nanometer device design.In the past two decades,several quantitative methods had been proposed to study the quantum correlation of certain open quantum systems,including the geometry and entropy style discord methods.However,there are differences among these quantification methods,which promote a deep understanding of the quantum correlation.In this paper,a novel time-dependent three environmental open system model is established to study the quantum correlation.This system model interacts with two independent spin-environments(two spin-environments are connected to the other spin-environment)respectively.We have calculated and compared the changing properties of the quantum correlation under three kinds of geometry and two entropy discords,especially for the freezing phenomenon.At the same time,some original and novel changing behaviors of the quantum correlation under different timedependent parameters are studied,which is helpful to achieve the optimal revival of the quantum discord and the similar serrated form of the freezing phenomenon.Finally,it shows the controllability of the freezing correlation and the robustness of these methods by adjusting time-dependent parameters.This work provides a new way to control the quantum correlation and design nanospintronic devices.Xiaoyu Li Yiming Huang Qinsheng Zhu Xusheng Liu Desheng Zheng 2021Computers, Materials & Continua2021,,3:0
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