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Bismuth/Graphdiyne Heterostructure for Electrocatalytic Conversion of CO_(2) to Formate

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Chemical Research in Chinese Universities 2022年第6期38卷 1380-1386页

作者： DU Yuncheng zheng xuchen XUE Yurui LI Yuliang Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029P.R.China Institute of Chemistry Chinese Academy of SciencesBeijing100190P.R.China Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceShandong UniversityJinan250100P.R.China School of Chemical Science University of Chinese Academy of SciencesBeijing100049P.R.China

Electrocatalytic CO_(2) reduction is great promising in alleviating the excessive CO_(2) emission and the conversion to valuable *** we report the in-situ controlled growth of Bismuth nanoflower/graphdiyne heterostructures(Bi/GDY)for efficient CO_(2) conversion toward *** on GDY,the obtained electrocatalyst exhibits a partial current density of 19.2 mA/cm^(2) and high reaction selectivity towards formate with a high Faradic efficiency of 91.7%at−1.03 V ***,and an energy efficiency of 58.8%.The high formate yield rates could be maintained at around 300µ.mol/(cm^(2)·h)over a wide potential *** characterizations show that the unique interface structures between GDY and Bi can enhance the charge transfer ability,increase the number of active sites,and improve the long-term stability,and finally reach high-performance electrocatalytic conversion of CO_(2) to formate.

关键词： Graphdiyne(GDY) Heterostructure CO_(2)reduction reaction(CO_(2)RR) Formate

Direct conversion of CO2 to CH4 on Pd/graphdiyne single-crystalline

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National Science Review 2024年第8期11卷 283-291页

作者： Chao Zhang xuchen zheng Yang Gao Chengyu Xing Siao Chen Yurui Xue Yuliang Li CAS Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of Sciences Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong University School of Chemical Sciences University of Chinese Academy of Sciences

A major impediment to the development of the efficient use of artificial photosynthesis is the lack of highly selective and efficient photocatalysts toward the conversion of CO2by sunlight energy at room temperature and ambient *** many years of hard work,we finally completed the synthesis of graphdiyne-based palladium quantum dot catalysts containing high-density metal atom steps for sele ctive artificial *** well-designed interface structure of the catalyst is composed of electron-donor and acceptor groups,resulting in the obvious incomplete charge-transfer phenomenon between graphdiyne and plasmonic metal nanostructures on the *** intrinsic characteristics are the origin of the high performance of the *** on its mechanism reveal that the synergism between 'hot electron' from local surface plasmon resonance and rapid photogenerated carrier separation at the ohmic contact interface accelerates the multi-electron reaction *** catalyst can selectively synthesize CH4directly from CO2and H2O with selectivity of near 100% at room temperature and pressure,and exhibits transformative performance,with an average CH4yield of 26.2 μmol g-1h-1and remarkable long-term stability.

关键词： graphdiyne controllable growth CO2 conversion single-crystalline heterocatalysis

Controlled Growth of Multidimensional Interface for High-Selectivity Ammonia Production

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CCS Chemistry 2023年第7期5卷 1653-1662页

作者： xuchen zheng Yurui Xue Chao Zhang Yuliang Li CAS Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100190 Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceJinan 250100

The efficient production of ammonia by reducing nitrates at room temperature and ambient pressure is a promising alternative to the Haber-Bosch process and can effectively overcome the attendant water pollution ***,a new idea has been realized for rational and selective construction of the sp-carbon-metal-carbon interface,comprised of electronic-donating triple bonds in graphdiyne and electron-withdrawing iron carbides,for a highly efficient nitrate reduction *** as-prepared sp-carbon-metal-carbon interfacial structures greatly increase the charge transfer ability and electrical conductivity of the *** proposed concept of incomplete charge transfer has demonstrated significantly high selectivity,activity,and stability in catalytic *** catalyst exhibits high Faradaic efficiency of over>95%and a NH3 yield rate up to 205.5μmolNH_(3) cm^(-2) h^(-1) in dilute nitrate conditions without any contaminant.

关键词： graphdiyne donor-acceptor interface incomplete charge transfer high selectivity ammonia production

Controlled Synthesis of Graphdiyne-Based Multiscale Catalysts for Energy Conversion

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Precision Chemistry 2024年第7期2卷 355-375页

作者： Siao Chen xuchen zheng Yang Gao Xinyu Ping Yurui Xue Yuliang Li CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of SciencesBeijing 100190China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Graphdiyne(GDY)science is a new and rapidly developing interdisciplinary field that touches on various areas of chemistry,physics,information science,material science,life science,environmental science,and so *** rapid development of GDY science is part of the trend in development of carbon ***,with its unique structure and fascinating properties,has greatly promoted fundamental research toward practical applications of carbon *** important applications,such as catalysis and energy conversion,have been *** particular,GDY has shown great potential for application in the field of *** have precisely synthesized a series of GDY-based multiscale catalysts and applied them in various energy conversion and catalysis research,including ammonia synthesis,hydrogen production,CO_(2) conversion,and chemical-to-electrical energy *** this paper,we systematically review the advances in the precisely controlled synthesis of GDY and aggregated structures,and the latest progress with GDY in catalysis and energy conversion.

关键词： graphdiyne controlled growth atom catalyst heterostructure energy conversion

乙型脑炎病毒毒力因子的新发现:E138酸碱性决定病毒毒力

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中国预防兽医学报 2018年第9期40卷 871-871页

作者： xuchen zheng Hao zheng Wu Tong 机构不详

乙型脑炎病毒（Japanese encephalitis virus, JEV）自上世纪二十年代在日本发现以来,在亚洲地区流行近百年。JEV感染人,特别是14岁以下的儿童,引起致病毒性脑炎,发病后死亡率20%～30%,且高达50%的幸存者患有神经后遗症。JEV是一种自然... 详细信息

乙型脑炎病毒（Japanese encephalitis virus, JEV）自上世纪二十年代在日本发现以来,在亚洲地区流行近百年。JEV感染人,特别是14岁以下的儿童,引起致病毒性脑炎,发病后死亡率20%～30%,且高达50%的幸存者患有神经后遗症。JEV是一种自然疫源性人畜共患病病原,由蚊传播,除感染人外,还感染马、野生水禽和猪。猪不分大小均可感染JEV,妊娠母猪感染后可引致流产。

关键词：乙型脑炎病毒病毒毒力毒力因子酸碱性妊娠母猪 virus 病毒性脑炎人畜共患病

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基于深度学习的GMAW焊接缺陷在线监测

焊接学报 2024年第3期45卷 114-119,I0009,I0010页

作者：徐东辉孟范鹏孙鹏郑旭宸程永超马志陈树君中车青岛四方车辆研究所有限公司青岛266114 中车工业研究院有限公司北京100160 北京工业大学北京100124

以轨道交通高速高铁司机室铝合金外板为载体,围绕智能焊接关键技术,针对焊接缺陷在线监测问题开展研究.借助工艺试验平台与焊接工艺卡开展焊接缺陷试验设计、批量数据采集、专家经验标定、数据库构建,采用卷积神经网络算法对不同类型数... 详细信息

以轨道交通高速高铁司机室铝合金外板为载体,围绕智能焊接关键技术,针对焊接缺陷在线监测问题开展研究.借助工艺试验平台与焊接工艺卡开展焊接缺陷试验设计、批量数据采集、专家经验标定、数据库构建,采用卷积神经网络算法对不同类型数据构建多维信息融合模型,并对融合模型进行参数优化处理,最终完成融合模型的训练、验证和测试.结果表明,训练后的融合模型比单一信息模型对焊接缺陷具有较好的识别结果,训练集和测试集的焊接缺陷监测精度分别为99.0%和88.3%,此监测系统的数据采集和模型响应总时间小于100 ms,能够满足工程化应用需求,提高机器人焊接的智能化水平,推动企业数字化转型升级.

关键词：熔化极气体保护焊深度学习多维信息融合焊接缺陷在线监测

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市政施工企业组织模式研究

中国市政工程 2002年第2期 52-54页

作者：张土乔俞亭超郑旭晨浙江大学市政工程研究所杭州310027 杭州市市政工程总公司杭州3210014

在分析市政施工企业组织模式变迁的基础上 ,以杭州市市政工程总公司的组织结构重建为例。

关键词：市政施工企业组织模式资产配置

耐寒睡莲花瓣中花青素苷组成及其与花色的关系

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植物学报 2012年第5期47卷 437-453页

作者：朱满兰王亮生张会金徐彦军郑绪辰王丽金南京农业大学园艺学院南京210095 中国科学院植物研究所北京植物园资源植物研发重点实验室北京100093 中国农业大学理学院北京100094 中国科学院研究生院北京100049

睡莲(Nymphaea spp.)为多年生水生观赏花卉。以耐寒睡莲不同花色的119个栽培品种为材料,利用高效液相色谱(HPLC-DAD)和液质联用技术(HPLC-ESI-MSn)测定了其花瓣中的花青素苷成分。采用英国皇家园艺学会比色卡(RHSCC)和国际照明委员会(C... 详细信息

睡莲(Nymphaea spp.)为多年生水生观赏花卉。以耐寒睡莲不同花色的119个栽培品种为材料,利用高效液相色谱(HPLC-DAD)和液质联用技术(HPLC-ESI-MSn)测定了其花瓣中的花青素苷成分。采用英国皇家园艺学会比色卡(RHSCC)和国际照明委员会(CIE)制定的CIEL*a*b*表色系统测量了57个品种的花色,运用多元线性回归方法分析花色与花青素苷组成之间的关系。结果表明:耐寒睡莲花瓣中含有14种花青素苷,其中飞燕草素-3-半乳糖-5-乙酰-半乳糖苷(Dp3Ga5acetyl Ga)、飞燕草素-3-鼠李糖-(1→2)-半乳糖苷(Dp3Rh(1→2)Ga)、矢车菊素-3-半乳糖-(1→2)-半乳糖苷(Cy3Ga(1→2)Ga)、矢车菊素-3-乙酰-半乳糖-(1→2)-半乳糖苷(Cy3acetylGa(1→2)Ga)、矢车菊素-3-没食子酰-半乳糖苷(Cy3galloylGa)、飞燕草素-3-乙酰-葡萄糖苷(Dp3acetylG)、飞燕草素-3-葡萄糖苷(Dp3G)和矢车菊素-3-半乳糖-半乳糖-半乳糖苷(Cy3GaGaGa)8个组分在耐寒睡莲中为首次报道。Dp3Ga、Dp3galloylGa、Cy3Ga(1→2)Ga和Cy3galloylGa是决定耐寒睡莲呈色的关键花青素苷。

关键词：花青素苷花色耐寒睡莲高效液相色谱液质联用

三维纳米结构单斜相BiVO4光催化材料研究进展

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化工新型材料 2018年第11期46卷 63-66页

作者：刘伟郑旭辰王梦瑶田媛媛李星辰赵国升吉林师范大学吉林省高校环境材料与污染控制重点实验室四平136000 吉林师范大学环境科学与工程学院四平136000 吉林师范大学化学学院四平136000

通过调控单斜相钒酸铋(mBiVO_4)的微观结构,以便改善光生电荷特性,从而提高其光催化活性。mBiVO_4材料的纳米结构能够加快电子迁移速率从而提高光生电荷的分离效率;特殊的形貌能够缩短光生电荷迁移路径而有利于光生电荷快速分离至表面,... 详细信息

通过调控单斜相钒酸铋(mBiVO_4)的微观结构,以便改善光生电荷特性,从而提高其光催化活性。mBiVO_4材料的纳米结构能够加快电子迁移速率从而提高光生电荷的分离效率;特殊的形貌能够缩短光生电荷迁移路径而有利于光生电荷快速分离至表面,进而促进表面活性位点的催化反应。阐述了近年来诸如花生状、橄榄状、花状、支状和其他形状等不同形貌的三维(3D)纳米结构mBiVO_4光催化材料在光催化领域的研究进展,并对这类光催化材料未来的发展趋势进行了展望。

关键词：三维纳米结构钒酸铋光催化形貌