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石墨烯与掺N石墨烯对甲酸盐电氧化催化剂Pt和Pd抗毒性的提升研究

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河南师范大学学报（自然科学版） 2016年第5期44卷 60-64页

作者：王建设杨玉杰程相林赵建宏宋成盈王留成郑州大学化工与能源学院郑州450001

为研究载体对甲酸盐电氧化催化剂抗毒性的促进作用,将商用催化剂Pt/C和Pd/C分别与石墨烯(GNs)及掺N石墨烯(NGNs)超声混合后涂制电极,通过循环伏安法(CV)及计时电流法(CA)比较了混合GNs及NGNs对催化剂抗毒性的影响.结果表明,加入GNs和NGN... 详细信息

为研究载体对甲酸盐电氧化催化剂抗毒性的促进作用,将商用催化剂Pt/C和Pd/C分别与石墨烯(GNs)及掺N石墨烯(NGNs)超声混合后涂制电极,通过循环伏安法(CV)及计时电流法(CA)比较了混合GNs及NGNs对催化剂抗毒性的影响.结果表明,加入GNs和NGNs均可提高Pt/C与Pd/C的抗毒性,其中NGNs提升作用更显著.该研究表明,石墨烯类材料改善催化剂抗毒性具有普适意义.

关键词：石墨烯掺N石墨烯甲酸盐电氧化抗毒性 Pt Pd

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丙烯酸改性醇酸树脂的合成及乳液性能研究

郑州大学学报（工学版） 2021年第3期42卷 65-69页

作者：赵建宏马珂珂程相林王建设周鹏举李蒙孙世昌王晨郑州大学化工学院河南郑州450001

为了改善水性醇酸树脂乳液耐水、干燥、硬度等性能,首先制备丙烯酸预聚物,然后进行酯化反应合成丙烯酸改性醇酸树脂(丙改醇树脂),用相反转法制备乳液。结果表明:树脂合成过程中适宜的工艺条件为引发剂用量(质量分数)为2%,链终止剂的用量... 详细信息

为了改善水性醇酸树脂乳液耐水、干燥、硬度等性能,首先制备丙烯酸预聚物,然后进行酯化反应合成丙烯酸改性醇酸树脂(丙改醇树脂),用相反转法制备乳液。结果表明:树脂合成过程中适宜的工艺条件为引发剂用量(质量分数)为2%,链终止剂的用量(质量分数)为1.5%,混合单体的滴加时间为4 h,预聚物的保温时间为3 h,酯化反应温度为210℃,酯化时间为150 min。适宜的乳化工艺条件制备的丙改醇树脂乳液的性能均有所改善,如干燥时间缩短、硬度增强、粒径减小等。

关键词：丙烯酸改性醇酸树脂相反转法乳液预聚物漆膜性能

In-situ trace element analyses of zircons from Dabieshan Huangzhen eclogite:Trace element characteristics of eclogite-facies metamorphic zircon

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Chinese Science Bulletin 2002年第16期47卷 1398-1401页

作者： WU Yuanbao CHEN Daogong XIA Qunke TU xianglin cheng Hao Department of Earth and Space Science University of Science and Technology of ChinaHefei 230026China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China

The internal structures of zircons in eclogite from Huangzhen have been studied by cathodoluminescence (CL) microscopy. Two growth stages were distinguished: protolith magmatic cores and metamorphic overgrowth rims. These different domains were analyzed for trace elements using LAM-ICP-MS. The protolith and the overgrowth zircons have different trace elements characteristics. The trace element contents of protolith zircons are high and very variable. The overgrowth zircons show a typical trace element feature of equilibrium with garnet, e.g. low contents of HREE (132.2-197.6μg/g) and small differential degree of HREE ((Yb/Gd)cN=8.6-11.9). The contents of Nb, Ta and the ratio of Nb/Ta are lower in the metamorphic domains (0.5-1.4μg/g, 0.7-1.5μg/g, 0.3-1.3, respectively) than in the protolith domains (3.8-19.7μg/g, 2.7-12.1μg/g, 1.0-4.6, respectively). This is the first time to give the evidence that the metamorphic zircon equilibrates with the rutile, which formed during the peak metamorphic stage.

关键词： eclogite zircon trace elements rutile.

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本草基因组方法学研究

世界科学技术-中医药现代化 2010年第3期12卷 316-324页

作者：陈士林何柳刘明珠钱俊闫海霞程翔林钱忠直中国医学科学院北京协和医学院药用植物研究所北京100193 中国生物技术发展中心北京100036 国家药典委员会北京100061

本草基因组计划(HerbGP)是针对具有典型代谢途径和重大经济价值的药用植物进行的全基因组测序和后基因组研究的系列计划。本文全面介绍物种基因组大小、染色体数目测定方法和第二代高通量测序方法,以及全基因组组装和基因组注释、基因... 详细信息

本草基因组计划(HerbGP)是针对具有典型代谢途径和重大经济价值的药用植物进行的全基因组测序和后基因组研究的系列计划。本文全面介绍物种基因组大小、染色体数目测定方法和第二代高通量测序方法,以及全基因组组装和基因组注释、基因组比较等生物信息学分析手段,并简要阐述重测序在药用植物全基因组研究中的应用方法。本草基因组计划的实施,将促进现代科学最新技术和方法在中药研究中的应用,使中药学研究位于生命科学的最前沿。

关键词：本草基因组计划基因组大小染色体数目高通量测序重测序

High‑Valence Transition Metal Modified FeNiV Oxides Anchored on Carbon Fiber Cloth for Efficient Oxygen Evolution Catalysis

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Advanced Fiber Materials 2022年第4期4卷 774-785页

作者： Zihe Wu Jiehui Yang Wenjie Shao Menghao cheng xianglin Luo Mi Zhou Shuang Li Tian Ma Chong cheng Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China College of Biomass Science and Engineering Textile InstituteSichuan UniversityChengdu 610065China Department of Ultrasound West China HospitalSichuan UniversityChengdu 610065China

Developing efficient and durable non-noble metal-based oxygen evolution catalysts is of great importance for electrochemical water ***,we report a new and facile strategy for controllable synthesis of high-valence Mo modified FeNiV oxides as efficient OER *** Mo-dopant displays a significant influence on the valence state of Fe species in the catalysts,which lead to tunable OER *** the feed ratio of Mo-dopant is 5%,the Mo-modified FeNiV oxide shows the best OER performance in terms of low overpotential(237 mV at the current density of 10 mA cm^(−2)),Tafel slope(38 mV per decade),and high mass activity,which exceeds its counterparts and most reported OER ***,by assembling the catalyst with a carbon fiber cloth,the fabricated water-splitting device exhibits excellent activity and longterm durability in alkaline electrolyte compared with commercial catalysts equipped *** work not only provides a series of Mo-modified FeNiV-based oxides as high-performance OER catalysts but also offers a new pathway to tune the charge states of OER active centers.

关键词： Electrocatalysts Transition metal-based materials Oxygen evolution reaction High-valence metals Water splitting

Enhancing photocatalytic CO_(2)reduction with TiO_(2)-based materials:Strategies,mechanisms,challenges,and perspectives

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Environmental Science and Ecotechnology 2024年第4期20卷 18-33页

作者： Zhimin Yuan xianglin Zhu Xianqiang Gao Changhua An Zheng Wang cheng Zuo Dionysios D.Dionysiou Hong He Zaiyong Jiang School of Chemistry&Chemical Engineering and Environmental Engineering Weifang UniversityWeifang261061PR China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085PR China Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang212013PR China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin300384PR China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering(DChEE)University of CincinnatiCincinnatiOH45221-0012USA College of Forestry Shandong Agricultural UniversityTaian271018PR China

The concentration of atmospheric CO_(2)has exceeded 400 ppm,surpassing its natural variability and raising concerns about uncontrollable shifts in the carbon cycle,leading to significant climate and environmental impacts.A promising method to balance carbon levels and mitigate atmospheric CO_(2)rise is through photocatalytic CO_(2)*** dioxide(TiO_(2)),renowned for its affordability,stability,availability,and eco-friendliness,stands out as an exemplary catalyst in photocatalytic CO_(2)*** strategies have been proposed to modify TiO_(2)for photocatalytic CO_(2)reduction and improve catalytic activity and product ***,few studies have systematically summarized these strategies and analyzed their advantages,disadvantages,and current ***,we comprehensively review recent advancements in TiO_(2)engineering,focusing on crystal engineering,interface design,and reactive site construction to enhance photocatalytic efficiency and product *** discuss how modifications in TiO_(2)'s optical characteristics,carrier migration,and active site design have led to varied and selective CO_(2)reduction *** enhancements are thoroughly analyzed through experimental data and theoretical ***,we identify current challenges and suggest future research directions,emphasizing the role of TiO_(2)-based materials in understanding photocatalytic CO_(2)reduction mechanisms and in designing effective *** review is expected to contribute to the global pursuit of carbon neutrality by providing foundational insights into the mechanisms of photocatalytic CO_(2)reduction with TiO_(2)-based materials and guiding the development of efficient photocatalysts.

关键词： summarized dioxide neutral

Pb, Sr isotopes in organic matter of Lower Tertiary hydrocarbon source rocks in Liaohe Fault Depression

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Chinese Science Bulletin 1999年第23期44卷 2192-2196页

作者： Jinglian Zhang Bingquan Zhu Yixian cheng xianglin Tu Zhengling Chao chengjun Zhang Qianhua Xiao Jingyou Li Mingzhi Piao CNPC NW Inst Geol Lanzhou 730020 Peoples R China Chinese Acad Sci Guangzhou Inst Geochim Canton 510640 Peoples R China Liaohe Petr Explorat Bur Panjin 124010 Peoples R China

The Pb, Sr isotopic compositions in organic matters (kerogen and soluble organic matter) of Lower Tertiary hydrocarbon source rock in Liaohe Fault Depression is first reported. There is a great variable rang of Pb isotopic compositions in kerogen, 206Pb/204Pb = 17.488-18.656, 207Pb/204Pb= 15.388-15.692, 208Pb/204Pb = 37.656-37.484. And soluble

关键词： kerogen soluble organic matter Pb Sr isotope hydrothermal hydrocarbon Liaohe Fault Depression.

Structures,properties,and challenges of emerging 2D materials in bioelectronics and biosensors

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InfoMat 2022年第5期4卷 102-138页

作者： Fan Chen Qing Tang Tian Ma Bihui Zhu Liyun Wang Chao He xianglin Luo Sujiao Cao Lang Ma Chong cheng College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringDepartment of UltrasoundWest China HospitalMed-X Center for MaterialsSichuan UniversityChengduChina National Clinical Research Center for Geriatrics West China HospitalSichuan UniversityChengduChina Department of Chemistry and Biochemistry Freie Universität BerlinBerlinGermany

Bioelectronics are powerful tools for monitoring and stimulating biological and biochemical processes,with applications ranging from neural interface simulation to *** increasing demand for bioelectronics has greatly promoted the development of new nanomaterials as detection ***,owing to their ultrathin structures and excellent physicochemical properties,emerging two-dimensional(2D)materials have become one of the most researched areas in the fields of bioelectronics and *** this timely review,the physicochemical structures of the most representative emerging 2D materials and the design of their nanostructures for engineering highperformance bioelectronic and biosensing devices are *** focus on the structural optimization of emerging 2D material-based composites to achieve better regulation for enhancing the performance of ***,the recent developments of emerging 2D materials in bioelectronics,such as neural interface simulation,biomolecular/biomarker detection,and skin sensors are discussed ***,we provide conclusive views on the current challenges and future perspectives on utilizing emerging 2D materials and their composites for bioelectronics and *** review will offer important guidance in designing and applying emerging 2D materials in bioelectronics,thus further promoting their prospects in a wide biomedical field.

关键词： bioelectronics biosensors emerging 2D materials nanostructures and properties neural interfaces simulation

Polymerization Kinetics and Stabilization Mechanism of the Monodisperse PMMA Microspheres

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Wuhan University Journal of Natural Sciences 2011年第4期16卷 337-341页

作者： YU xianglin YE Chunjie LI Junbo cheng Dongbing WANG Jun CHEN Rong Key Laboratory for Green Chemical Process of Ministry of Education Wuhan Institute of Technology Wuhan 430074 Hubei China

The effects of the concentration of monomer, crosslinking agent, initiator, stabilizer, and the polarity of medium on the polymerization kinetics were investigated. The results show that the rate of polymerization (Rp) and conversion increased with the increase of monomer concentration from 8% to 15% (total mass); the water content in dispersion medium and the initiator 2, 2′ -azobis (isobutyronitrile) (AIBN) concentration increased as well. Rp and conversion decreases with the increase of PVP when it is low, while it increases when it is high. Moreover, PVP plays an important role in microsphere stabilization. The stabilization mechanism was investigated primarily, which involves both adsorbing mechanism and graft mechanism. Within a certain range of crosslinking degree, Rp and conversion increased with the increase of the crosslinker concentration. The effect can be ignored when crosslinker concentration is above 0.3 % (total mass), and the reason was that the monomer can hardly be diffused into the microsphere phase with a certain degree of crosslinking.

关键词： dispersion polymerization methyl methacrylate polymerization kinetics stabilization mechanism