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Perspective for OER electrocatalysts:Lattice engineering of clay-like frameworks with near-surface cluster active sites

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Science China(Technological Sciences) 2024年第1期67卷 330-334页

作者： zhang dantong QIAN BinBin XUE DongFeng Multiscale Crystal Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Near-surface cluster active centers(NSCAC)are pivotal functional units in the catalysis of oxygen evolution reaction(OER),which exceeds the limitations imposed by the diverse coordination environments experienced in atomic and molecular active centers,thereby serving as an exceptional medium for exploring the dynamic catalytic processes of metal active sites[1,2].In the OER,the NSCAC primarily consist of the catalytic site and the first neighboring coordinating *** investigation of NSCAC surpasses the exclusive reliance on the electron state regulation mechanism at the atomic level.

关键词： cluster centers exceptional

Glycine-β-cyclodextrin-assisted cometabolism of phenanthrene and pyrene by Pseudomonas stutzeri DJP 1 from marine sediment

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Journal of Oceanology and Limnology 2024年第2期42卷 560-569页

作者： Junfeng JIANG Weijun TIAN Zhiyang LU Meile CHU Huimin CAO dantong zhang College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Key Laboratory of Marine Environment and Ecology Ministry of EducationQingdao 266100China

Cometabolic degradation is currently an effective and extensively way to remove high molecular weight polycyclic aromatic hydrocarbons(HMW-PAHs).Unfortunately,due to low bio-accessibility and high biotoxicity,the cometabolic degradation rate of HMW-PAHs is ***-β-cyclodextrin(GCD)was obtained through amino modification ofβ-cyclodextrin(BCD)and added to cometabolic system of phenanthrene(PHE)and pyrene(PYR)to assist PYR *** show that the addition of GCD(100 mg/L)effectively improved the removal rate of PYR(20 mg/L)by 42.3%.GCD appeared to increase the bio-accessibility and reduce the biotoxicity of PHE and PYR,and then promoted the growth of Pseudomonas stutzeri DJP1 and stimulated the elevation of dehydrogenase(DHA)and catechol 12 dioxygenase(C12O)*** phthalate metabolic pathway was accelerated,which improved the cometabolic *** study provided a new reference for the cometabolic degradation of HMW-PAHs.

关键词： cometabolism phenanthrene pyrene glycine-β-cyclodextrin biological accessibility biotoxicity

Applying machine-learning screening of single transition metal atoms anchored on N-dopedγ-graphyne for carbon monoxide electroreduction toward C_(1)products

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Nano Research 2023年第8期16卷 11511-11520页

作者： Dongxu Jiao dantong zhang Dewen Wang Jinchang Fan Xingcheng Ma Jingxiang Zhao Weitao Zheng Xiaoqiang Cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and Engineeringand Key Laboratory of Automobile Materials of MOEJilin UniversityChangchun 130012China College of Chemistry and Chemical Engineering and Key Laboratory of Photonic and Electronic Bandgap MaterialsMinistry of EducationHarbin Normal UniversityHarbin 150025China Multiscale Crystal Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Carbon monoxide electroreduction(COER)has been a key part of tandem electrolysis of carbon dioxide(CO_(2)),in which searching for high catalytic performance COER electrocatalysts remains a great ***,by means of density functional theory(DFT)computations,we explored the potential of a series of transition metal atoms anchored on N-dopedγ-graphyne(TM@N-GY,TM from Ti to Au)as the COER *** found that the final product selectivity of these single-atom catalysts depended on the position of the metal atom in the periodic table,with metals in the front and middle of each periodic period exhibiting high selectivity for CH_(4),while metals in the back producing CH_(3)*** learning(ML)found that metal atomic number was intrinsic to the difference in COER performance of these single-atom catalysts(SACs).The free energy changes showed that Mn@N-GY and Ni@N-GY exhibited outstanding COER catalytic performance for producing CH_(4)and CH_(3)OH,*** results provide theoretical and experimental guidance for designing efficient COER catalysts to generate C_(1)products.

关键词： CO electroreduction single atom catalysts γ-graphyne density functional theory machine learning

Outer delocalized electron aggregation of bromide bridged core–shell CuBr@C for hydrogen evolution reaction

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Nano Research 2023年第5期16卷 6608-6614页

作者： Tianyi Xu Ruoyu Li Lei zhang Dongxu Jiao Yilong Dong Ming Gong dantong zhang Jinchang Fan Dewen Wang Yanhua Liu Xiao Zhao Wei zhang Weitao Zheng Xiaoqiang Cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsElectron Microscopy CenterJilin UniversityChangchun 130012China College of Chemistry Jilin UniversityChangchun 130012China Center of Multiscale Crystal Materials Research Institute of Advanced Materials Science and EngineeringShenzhen Intitute of Advanced TechnologyChinese Academy of ScienceShenzhen 518055China

Modulation of the surface electron distribution is a challenging problem that determines the adsorption ability of catalytic ***,we address this challenge by bridging the inner and outer layers of the core–shell structure through the bridge Br *** shell wrapped copper bromide nanorods(CuBr@C)are constructed for the first time by chemical vapour deposition with hexabromobenzene(HBB).HBB pyrolysis provides both bridge Br atom and C *** C shell protects the stability of the internal halide structure,while the bridge Br atom triggers the rearrangement of the surface electrons and exhibits excellent electrocatalytic ***,the hydrogen evolution reaction(HER)activity of CuBr@C is significantly better than that of commercial N-doped carbon nanotubes,surpassing commercial Pt/C at over 200 mA·cm^(−2).Density functional theory(DFT)calculations reveal that bridge Br atoms inspire aggregation of delocalized electrons on C-shell surfaces,leading to optimization of hydrogen adsorption energy.

关键词： bridge Br atoms delocalized electron aggregation core–shell nanorods C-shell wrapped CuBr hydrogen evolution reaction

Room-temperature liquid metal synthesis of nanoporous copper-indium heterostructures for efficient carbon dioxide reduction to syngas

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Science China Materials 2022年第12期65卷 3504-3512页

作者： Xingcheng Ma Feng Wang Dongxu Jiao dantong zhang Xiao Zhao David JSingh Jingxiang Zhao Xiaoqiang Cui Weitao Zheng State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEJilin UniversityChangchun 130012China Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of Educationand College of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbin 150025China Department of Physics and Astronomy and Department of Chemistry University of MissouriColumbiaMissouri 65211United States Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

Nanoporous metals show promising performances in electrochemical *** this paper,we report a self-supporting bimetallic porous heterogeneous indium/copper structure synthesized with a eutectic gallium-indium(EGaIn)material on a copper *** nanoporous copper-indium heterostructure catalyst exhibits excellent performance in the reduction of carbon dioxide to *** ratio of H_(2)/CO is tunable from 0.47 to 2.0 by changing working *** catalyst is highly stable,showing 96%maintenance of the current density after a 70-h continuous *** functional theory calculations reveal that the indium/copper interface induces charge redistribution within the copper surface,leading to the formation of two distinct active sites,namely,Cu^(δ)and Cu0,and enabling a high-performance generation of CO and H_(2).This work provides a new strategy for obtaining self-supporting nanoporous metal electrode catalysts.

关键词： syngas liquid metal EGaIn heterostructure nanoporous metal

Understanding carbon footprint:An evaluation criterion for achieving sustainable development

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Chinese Journal of Population,Resources and Environment 2024年第4期22卷 367-375页

作者： Fang Yu Qian Yuan Xuerou Sheng Mengyue Liu Leping Chen Xueliang Yuan dantong zhang Shuqi Daia Zhinan Hou Qingsong Wang Qiao Ma School of Energy and Power Engineering Shandong UniversityJinan 250061China Shandong University Press Jinan 250100China

Excessive greenhouse gas emissions lead to global warming,which poses a critical challenge for human *** consensus that carbon emissions must be reduced to achieve sustainable development has raised research interest on the topic of carbon footprint,an assessment standard for measuring greenhouse gas *** shed light on this important topic,we introduce carbon footprint-related international standards and domestic policies,and conduct quantitative and qualitative analyses to provide a comprehensive overview of the current carbon footprint ***,through a bibliometric analysis of 13203 carbon foot-print publications circulated over the past decade,we quantify the publication volume,influence,and collaboration networks of countries/regions,institutions,and *** results show that publications on carbon footprint have been increasing since 2013,and more so after *** domain influence,China and its academic institutions show a strong *** addition,a cluster analysis of the keywords of all publications shows seven categories,encompassing carbon footprint accounting methods and research ***,a qualitative analysis of the research methods and subjects related to carbon footprint reveals the need to increase communication and collaboration among different disciplines and countries/regions to strengthen the construction of carbon footprint ***,this study identifies popular topics and development trends in the carbon footprint literature to provide research direction for promoting green and low-carbon transformation of the social economy to achieve sustainable development.

关键词： Carbon footprint Carbon accounting Greenhouse gas emissions Bibliometrics Sustainable development

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晶格工程电子态调控研究

量子电子学报 2024年第6期41卷 839-851页

作者：张丹彤薛冬峰中国科学院深圳先进技术研究院多尺度晶体材料研究中心广东深圳518055 齐齐哈尔大学化学与化学工程学院黑龙江齐齐哈尔161006 电子科技大学(深圳)高等研究院广东深圳518110

晶格工程在材料科学和器件设计领域扮演着关键角色,通过精确构建晶格有序态、超晶格态、晶格缺陷态等,能够有效构筑材料的拓扑有序态,实现宏观尺度晶格架构定制并提升其在光、电、磁等领域的性能。基于晶格的本征周期性形成的拓扑有序... 详细信息

晶格工程在材料科学和器件设计领域扮演着关键角色,通过精确构建晶格有序态、超晶格态、晶格缺陷态等,能够有效构筑材料的拓扑有序态,实现宏观尺度晶格架构定制并提升其在光、电、磁等领域的性能。基于晶格的本征周期性形成的拓扑有序态材料,其特殊的能带结构在电子输运过程中表现出高导电性、较低的能量损耗以及特殊的量子霍尔效应;基于超晶格的空间组装性和纵向旋转性构筑的摩尔条纹系列材料,为光电传感器和光子学器件等性能的提升开辟了新途径;而晶格缺陷能够有效构筑局域电子态、缺陷自旋态等特殊效应,有利于设计磁性调控和磁存储器件。

关键词：量子光学晶格工程晶格缺陷超晶格晶格应变

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当前欧美国家有关入学准备研究的最新进展

学前教育研究 2014年第9期 52-58页

作者：夏竹筠宋占美张丹彤山东英才学院学前教育研究院济南250104

儿童入学准备一直是欧美国家学前教育研究者关注的热点话题,其研究普遍涉及到早期教育保育经历、家庭结构与家长养育方式、家庭环境、与学习相关的能力、社会性行为、基于数学和语言方面的任务、社会经济地位等影响因素,其中对语言领域... 详细信息

儿童入学准备一直是欧美国家学前教育研究者关注的热点话题,其研究普遍涉及到早期教育保育经历、家庭结构与家长养育方式、家庭环境、与学习相关的能力、社会性行为、基于数学和语言方面的任务、社会经济地位等影响因素,其中对语言领域的相关研究大大多于数学领域。儿童入学准备情况同时受到文化因素的影响,父母来自不同地区的移民儿童入学准备差异显著。家长对儿童入学准备越来越重视,但付出的努力没有随之增加。住房稳定、让儿童经常参加家庭日常活动有助于提升儿童入学准备水平。高质量幼儿教育保育项目与儿童的入学准备在很多研究中都被证实存在积极相关,但其作用效果究竟有多大,不同的研究显示出从极小到中等程度不同的结论,最近的研究显示还可能与使用的评价工具有关。开端计划项目和某些短期针对性干预项目都被证明能够显著改善处境不利儿童的入学准备水平。此外,学前教育专业的学习和持续不断的职后指导相结合,被证明是通过教师因素帮助儿童提高入学准备水平的有效方式。

关键词：入学准备入学准备研究早期教育保育

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双源CT双能量成像对痛风石诊断的临床研究

中外医学研究 2018年第35期16卷 62-64页

作者：张丹彤厦门大学附属中山医院福建厦门361004

目的:探明双源CT双能量成像技术在诊断痛风患者四肢关节中尿酸盐沉积情况的诊断效果。方法:选取笔者所在医院2017年3月-2018年3月收治的45例疑似痛风患者作为观察组,15例具有下肢疼痛、类风湿关节炎等非痛风患者作为对照组。在分组完成... 详细信息

目的:探明双源CT双能量成像技术在诊断痛风患者四肢关节中尿酸盐沉积情况的诊断效果。方法:选取笔者所在医院2017年3月-2018年3月收治的45例疑似痛风患者作为观察组,15例具有下肢疼痛、类风湿关节炎等非痛风患者作为对照组。在分组完成后,将其进行混编并采用双源CT双能量成像处理软件进行系统扫描与处理后,交由三名专业医师进行独立评价与判断,对比观察组与对照组在不同部位的尿酸盐沉积结果并评估其临床评估中存在的具体差异。结果:通过对比后发现,观察组患者中分别有25、14、39例患者被检查出手腕、膝部及踝关节具有尿酸盐沉积情况,其中踝关节处沉积较为严重。对照组患者没有出现尿酸盐的沉积情况。根据双能量成像技术的显示结果,45例患者的痛风石针对中发现沉积390处,是临床病变估计率的4倍以上。结论:通过对比观察组与对照组最终痛风石的临床诊断结果,双源CT双能量成像在痛风石诊断临床应用中具有良好的效果,可以方便快捷地完成痛风患者尿酸盐的沉积检测工作,对于痛风石诊断与判别具有一定的应用价值,值得在临床中推广并借鉴。

关键词：双源CT双能量成像技术痛风诊断临床