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Journal of Energy Chemistry 2020年第10期29卷 283-290页

作者： Yin Jia Yiyan Wang Guoxin Zhang Cong Zhang Kai Sun xuya xiong Junfeng Liu Xiaoming Sun State Key Laboratory of Chemical Resource Engineering College of ScienceBeijing University of Chemical TechnologyBeijing 100029China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590ShandongChina State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580ShandongChina

Non-precious metal-nitrogen-carbon(MNC)electrocatalysts have gained tremendous attention as promising electrocatalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).However,the most applicable strategies for the synthesis of MNC materials heavily rely on pyrolysis treatment,which may easily lead to metal aggregation and subsequent degradation of catalytic ***,we developed a pyrolysis-free strategy for preparing MNC materials,which was demonstrated by achieving ultrathin cobalt-nitrogen-carbon(Co NC)layer with dense atomically dispersed cobalt sites depositing on graphene oxide(GO)via simple treatment of Co salt and GO in *** formamide-derived Co NC layer deposited on GO(termed as f-Co NC/GO)could be controlled in 1-2 nm ***,the f-CoNC/GO composite without pyrolysis exhibited excellent bifunctional performance toward ORR and OER,which was attributed to the dense atomically dispersed Co-Nxsites and improved conductivity by GO ***,the f-CoNC/GO-assembled rechargeable Zn-air battery showed highly efficient and stable performance,demonstrating our pyrolysis-free method to be straightforward,cost-effective,and feasible for the scalable production of MNC electrocatalysts.

关键词： Pyrolysis-free Formamide Non-precious metal Electrocatalysts Zn-air battery

Layered double hydroxides with atomic-scale defects for superior electrocatalysis

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Nano Research 2018年第9期11卷 4524-4534页

作者： Oixian Xie Zhao Cai Pengsong Li Daojin Zhou Yongmin Bi xuya xiong Enyuan Hu Yaping Li Yun Kuang Xiaoming Sun State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Chemistry and Energy Sciences Institute Yale University West Haven Connecticut 06516 USA Chemistry Division Brookhaven National Laboratory Upzon New York 11973 USA College of Energy Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Atomic composition tuning and defect engineering are effective strategies to enhance the catalytic performance of multicomponent catalysts by improving the synergetic effect; however, it remains challenging to dramatically tune the active sites on mulficomponent materials through simultaneous defect engineering at the atomic scale because of the similarities of the local environment. Herein, using the oxygen evolution reaction （OER） as a probe reaction, we deliberately introduced base-soluble Zn（II） or AI（III） sites into NiFe layered double hydroxides （LDHs）, which are one of the best OER catalysts. Then, the Zn（II） or AI（III） sites were selectively etched to create atomic M（I0/M（IIo defects, which dramatically enhanced the OER activity. At a current density of 20 ***-2, only 200 mV overpotential was required to generate M（II） defect-rich NiFe LDHs, which is the best NiFe-based OER catalyst reported to date. Density functional theory （DFT） calculations revealed that the creation of dangling Ni-Fe sites （i.e., unsaturated coordinated Ni-Fe sites） by defect engineering of a Ni-O-Fe site at the atomic scale efficiently lowers the Gibbs free energy of the oxygen evolution process. This defect engineering strategy provides new insights into catalysts at the atomic scale and should be beneficial for the design of a variety of catalysts.

关键词： selective defect engineering atomic vacancy layered double hydroxide electrocatalysis oxygen evolution reaction

基于工程教育认证为导向的“生物工程设备”课程教学改革的研究与实践

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农产品加工 2019年第12期 112-114页

作者：韩本勇熊向峰赵鹏余旭亚徐军伟昆明理工大学生命科学与技术学院

“生物工程设备”是生物工程专业的核心必修课程,是一门知识面广、实践和应用性强的课程。以工程教育认证为导向并结合多年的教学过程,对教学内容进行优化与改革、对教学手段与方法进行,以及对实践教学等方面进行了有益的探索与实践,获... 详细信息

“生物工程设备”是生物工程专业的核心必修课程,是一门知识面广、实践和应用性强的课程。以工程教育认证为导向并结合多年的教学过程,对教学内容进行优化与改革、对教学手段与方法进行,以及对实践教学等方面进行了有益的探索与实践,获得了一些提高教学效果、培养学生工程实践能力的教学经验。

关键词：生物工程设备工程教育认证教学改革研究实践

草地藏系绵羊中性基因TF和HP遗传共适应性研究

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西南民族大学学报（自然科学版） 2003年第6期29卷 705-708页

作者：徐亚欧王永胡瑜李世丹熊永赵蜀容钟红梅周纯兵西南民族大学生命科学与技术学院成都610041 若尔盖县农牧局四川若尔盖623000

对若尔盖县草地藏系绵羊选育基础群的中性结构基因TF、HP进行遗传共适应及草地藏系绵羊遗传平衡性进行研究.结果表明:草地藏系绵羊中性结构基因TF、HP的基因及遗传共适应性均处于遗传平衡状态.

关键词：草地藏系绵羊遗传共适应蛋白质多态遗传平衡中性基因 TF HP

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三个山羊品种(类群)的RAPD分析

西南民族大学学报：自然科学版 2003年第5期29卷 586-590页

作者：钟红梅徐亚欧王永覃志洪刘国文欧其拉一马玉才熊永赵蜀容西南民族大学生命科学与技术学院成都610041 凉山州畜科所西昌615000 凉山州美姑县畜牧局 616400

采用RAPD方法分析了藏山羊、安哥拉山羊、建昌黑山羊的巴普类群,得到清晰且多态性丰富的条带,其扩增条带总数共40条.其中22条有多态,多态频率为55.0％.对3个山羊品种(类群)的基因组DNA进行多态性和亲缘关系研究,结果表明:3个山羊品种(类... 详细信息

采用RAPD方法分析了藏山羊、安哥拉山羊、建昌黑山羊的巴普类群,得到清晰且多态性丰富的条带,其扩增条带总数共40条.其中22条有多态,多态频率为55.0％.对3个山羊品种(类群)的基因组DNA进行多态性和亲缘关系研究,结果表明:3个山羊品种(类群)间的多态性大于品种(类群)内的多态性,藏山羊与安哥拉山羊之间亲缘关系较近,巴普类群与安哥拉山羊之间亲缘关系较远.

关键词：山羊 RAPD分析遗传多态性亲缘关系扩增多态性DNA