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CoNi nanoparticles anchored inside carbon nanotube networks by transient heating:Low loading and high activity for oxygen reduction and evolution

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Journal of Energy Chemistry 2021年第3期30卷 63-71页

作者： Chengfeng zhu Wei Yang Jiangtao Di Sha Zeng Jian Qiao Xiaona Wang Bo Lv qingwen Li Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials Division.Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina Division of Nanomaterials Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesNanchang 330200JiangxiChina School of Materials Science and Engineering and Key Laboratory of Aerospace Materials and Performance Ministry of EducationBeihang UniversityBeijing 100083China

Transitional metal alloy and compounds have been developed as the low cost and efficient bifunctional electrocatalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).However,a high mass loading of these catalysts is commonly needed to achieve acceptable catalytic performance,which could cause such problems as battery weight gain,mass transport blocking,and catalyst *** report herein the preparation of fine CoNi nanoparticles(5-6 nm)anchored inside a nitrogendoped defective carbon nanotube network(CoNi@N-DCNT)by a transient Joule heating *** utilized as an electrocatalyst for oxygen reduction and evolution in alkaline media,the CoNi@N-DCNT film catalyst with a very low mass loading of 0.06 mg cm^(-2) showed excellent bifunctional catalytic *** ORR,the onset potential(Eonset)and the half-wave potential(E_(1/2))were 0.92 V versus reversible hydrogen electrode(***)and 0.83 V(***),*** OER,the potential at the current density(J)of 10 mA cm^(-2)(E_(10))was 1.53 V,resulting in an overpotential of 300 mV much lower than that of the commercial RuO_(2) catalyst(320 mV).The potential gap between E_(1/2) and E_(10) was as small as 0.7 *** the low mass loading,the mass activity at E_(10) reached at 123.2 A g^(-1),much larger than that of the RuO_(2) catalyst and literature results of transitional metal-based bifunctional ***,the CoNi@N-DCNT film catalyst showed very good long-term stability during the ORR and OER *** excellent bifunctional catalytic performance could be attributed to the synergistic effect of the bimetal alloy.

关键词： Transient Joule heating method Carbon nanotubes Nano alloy Low loading Bifunctional catalyst

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One-step wet-spinning assembly of twisting-structured graphene/carbon nanotube fiber supercapacitor

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Journal of Energy Chemistry 2020年第12期29卷 434-441页

作者： Zhengpeng Yang Yuanheng Jia Yutao Niu Yongyi Zhang Chunjing Zhang Ping Li Meng zhu qingwen Li Henan Key Laboratory of Materials on Deep-Earth Engineering School of Materials Science and EngineeringHenan Polytechnic UniversityJiaozuo 454003HenanChina Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials Suzhou Institute of Nano-Tech and Nano-BionicsNanchangChinese Academy of SciencesNanchang 330200JiangxiChina

Graphene fiber-based supercapacitors hold great promise as flexible energy-storage devices. However, simultaneously achieving high ion-transport ability in electrode and electrolyte layer, which is crucial for realizing the high electrochemical performance, still remains challenging. Here, a facile and effective strategy to solve the problem was proposed by developing a twisting-structured graphene/carbon nanotube(CNT) fiber supercapacitor via one-step wet-spinning process with customized multi-channel *** remarkable structure features of the resulting fiber supercapacitor with wrinkled and thin electrolyte layer, and well-developed porosity of fiber electrode favored the rapid infiltration and transport of electrolyte ions inside the electrode, as well as between electrode and electrolyte, thus boosting high specific capacitance of 187.6 mF cm^(-2) and energy density of 30.2 μWh cm^(-2), and featuring long cycling life(93%capacitance retention after 10,000 cycles) and excellent flexibility. Moreover, the specific capacitance and energy density could be further improved to 267.2 m F cm^(-2) and 66.8 μWh cm^(-2), respectively, when Mn O2 was incorporated into the fiber.

关键词： One-step wet-spinning Graphene fiber-based supercapacitor Twisting-structured fiber Ion transport

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国医大师孙光荣运用“子母方”治疗带下病用药规律分析

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中医药导报 2023年第10期29卷 99-103页

作者：王涵烯曲润敏金琦陈屹玲吕明圣朱庆文北京中医药大学北京100029

目的:探讨孙光荣运用“子母方”治疗带下病的用药规律。方法:从2011年5月至2015年4月就诊于北京同仁堂中医医院孙光荣教授门诊的所有带下病患者病案中,筛选出符合标准的病案,建立数据库。使用Cytoscape进行处方用药可视化,通过IBM SPSS ... 详细信息

目的:探讨孙光荣运用“子母方”治疗带下病的用药规律。方法:从2011年5月至2015年4月就诊于北京同仁堂中医医院孙光荣教授门诊的所有带下病患者病案中,筛选出符合标准的病案,建立数据库。使用Cytoscape进行处方用药可视化,通过IBM SPSS Statistics 22、IBM SPSS Modeler 18.0对数据进行频数统计、系统聚类分析和关联分析,借助VOSviewer构建内服药物-症状模块化聚类网络。结果:本研究共纳入内治、外治处方55份,中药共114味。内治方中,以黄芪-丹参-生晒参/西洋参/党参/太子参、香附-益母草、月季花-红花等为核心药对或核心药组;外治方中,以蛇床子-百部-白花蛇舌草、甘草-蒲公英、白鲜皮-地肤子、薏苡仁-芡实、煅龙骨-煅牡蛎为核心药对或核心药组。结论:孙光荣针对带下病气血失调、湿热下注的核心病机,内治法重在调理气血,外治法重在以坐浴的形式清热除湿、杀虫止痒。

关键词：带下病子母方孙光荣药对药组用药规律

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虚拟实验室应用于高等医学院校生理学实验教学的思考

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中国中医药现代远程教育 2019年第3期17卷 1-3页

作者：刘天华郭健李海燕程薇朱庆文张胜高蔚北京中医药大学中医学院北京100029

虚拟实验室是一种基于计算机技术和信息网络技术的新型教学模式。在高等医学院校生理学实验教学过程中应用虚拟实验室,有助于优化生理学实验的教学效果。对高等医学院校生理学实验虚拟实验室的应用效果评价,建议纳入定量评价体系的分析... 详细信息

虚拟实验室是一种基于计算机技术和信息网络技术的新型教学模式。在高等医学院校生理学实验教学过程中应用虚拟实验室,有助于优化生理学实验的教学效果。对高等医学院校生理学实验虚拟实验室的应用效果评价,建议纳入定量评价体系的分析结果报告以及生理学实验一线带教教师的定性评价结果,以期为进一步改善生理学实验虚拟实验室提供依据,并为进一步提升和优化高等医学院校生理学实验教学体系与方法提供新的思路。

关键词：虚拟实验室高等医学院校生理学实验应用效果评价

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Comprehensive safety evaluation method of surrounding rock during underground cavern construction

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Underground Space 2021年第1期6卷 46-61页

作者： qingwen Ren Lei Xu Aixi zhu Mingzhang Shan Linfei Zhang Jiafeng Gu Lei Shen College of Mechanics and Materials Hohai UniversityNanjing 210098China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China Shanghai Tongyan Civil Engineering Technology Co.Ltd. China China Resources Land Ltd. WeihaiChina

The deformation instability of surrounding rock and the collapse of rock blocks are two common failure modes observed during the construction of underground ***,a comprehensive safety evaluation method(CSEM)of surrounding rock for application during underground cavern construction is presented in this *** method can be used to evaluate the deformation stability of surrounding rock and predict the collapse of rock blocks,***,a deformation stability prediction and evaluation method(DSPEM)for rock mass is *** combines the safety evaluation method based on a deformation statistical analysis and an inverse deformation prediction method using measured deformation data of surrounding *** approach possesses the unique characteristics of complementary and mutual *** addition,a comprehensive early-warning index system(CWIS)for assessing the deformation stability of surrounding rock is *** consists of three types of warning indicators and three levels of warning *** earlywarning values can be adjusted reasonably by the prediction correction method according to the measured *** the collapse of rock blocks controlled by structural surfaces,a rapid prediction method of rock block collapse(RPMBC)based on the block theory is then ***,combining the DSPEM,RPMBC,and CWIS,the CSEM of surrounding rock for assessing the safety of cavern construction is *** can provide technical support for decision making on the safety of surrounding rock during the construction of underground caverns.

关键词： Underground cavern Rock mass Safety evaluation during construction Early warning system

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In-situ emb e dding zeolitic imidazolate framework derived Co–N–C bifunctional catalysts in carbon nanotube networks for flexible Zn–air batteries

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Journal of Energy Chemistry 2019年第11期28卷 170-176页

作者： Bo Lv Sha Zeng Wei Yang Jian Qiao Chao Zhang Chengfeng zhu Minghai Chen Jiangtao Di qingwen Li School of Nano-Technology and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina

Recently, the development of high-performance bifunctional oxygen catalysts integrated with flexible conductive scaffolds f or rechargeable metal-air batteries has attracted considerable interest, driving by fastgrowing wearable electronics. Herein, we report a flexible bifunctional oxygen catalyst thin film consisting of Co–N–C bifunctional catalysts embedding in carbon nanotube(CNT) networks. The catalyst is readily prepared by pyrolysis of cobalt-based zeolitic imidazolate frameworks(ZIF-67) that are in-situ synthesized in CNT networks. Such catalyst film demonstrates very high catalytic activities for oxygen reduction(onset potential: 0.91 V, and half-wave potential: 0.87 V vs. RHE) and oxygen evolution(10 m Acm^-2 at 1.58 V) reactions, high methanol tolerance property, and long-term stability(97% current retention). Moreover, our integrated catalyst film shows very good structure flexibility and robustness. Based on the obtained film air electrodes, flexible Zn–air batteries demonstrate low charging and discharging overpotentials(0.82 V at 1 m A cm^-1) and excellent structure stability in the bending tests. These results indicate that presently reported catalyst films are potential air electrodes for flexible metal–air batteries.

关键词： Air electrodes Carbon nanotube films Bifunctional catalysts Zn-air batteries Zeolitic imidazolate framework

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应用NIRS技术获取SaO_2以及相关信息量化辨识气虚的方法和意义

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世界科学技术-中医药现代化 2015年第8期17卷 1628-1633页

作者：芦煜牛婷立杨学智朱庆文李海燕张健牛欣北京中医药大学基础医学院北京100029 北京中医药大学东方医院北京100078

目的:探索应用近红外光谱学(Near-infrared Spectroscopy,NIRS)技术获取血氧饱和度(Oxygen Saturation,Sa O2)以及相关信息量化辨识气虚的方法,讨论量化气虚对于中医临床的价值。方法:通过总结NIRS技术的研究与应用现状,探索缺氧与气虚... 详细信息

目的:探索应用近红外光谱学(Near-infrared Spectroscopy,NIRS)技术获取血氧饱和度(Oxygen Saturation,Sa O2)以及相关信息量化辨识气虚的方法,讨论量化气虚对于中医临床的价值。方法:通过总结NIRS技术的研究与应用现状,探索缺氧与气虚以及典型症候之间的关联,依据文献中易于引起Sa O2值降低的各种疾病以及相关症状特征,比较气虚的典型症状,探索Sa O2与气虚典型症候之间的相关性,讨论NIRS获取Sa O2以及相关信息量化气虚的途径与方法。应用精确获取的Sa O2测量值,将Sa O2值与主观感受的强度进行关联,尝试量化评价气虚相关主观感受的强度。结果:依据已有数据归纳出不同海拔、年龄下对应的正常值以及气虚程度,主观不适感程度。在协助中医医师快速量化评估气虚程度方面,具有一定的应用空间。结论:Sa O2可以作为量化辅助气虚程度的指标之一.

关键词： NIRS SaO2 气虚量化

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新疆准东地区煤质分析

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广东化工 2023年第12期50卷 216-218页

作者：柴栋黎艳艾则提艾力朱青文张星昊张想科莱孜娜新疆工程学院化学与环境工程学院煤化工过程副产物高值转化协同创新中心新疆乌鲁木齐830023

在“双碳”要求的国际大背景下,合理、科学分类使用有限化石资源煤炭,是国家工业发展的需求,更是环境胁迫下的选择。利用化学分析和仪器分析相结合,就准东地区18个煤矿的煤样进行了煤炭质量分析。分析内容包括工业分析、常量元素分析,... 详细信息

在“双碳”要求的国际大背景下,合理、科学分类使用有限化石资源煤炭,是国家工业发展的需求,更是环境胁迫下的选择。利用化学分析和仪器分析相结合,就准东地区18个煤矿的煤样进行了煤炭质量分析。分析内容包括工业分析、常量元素分析,以及有害元素和稀贵金属的分析测定。结果表明:这些煤样均为烟煤和褐煤,其中肥煤的有5个,长焰煤的有1个,属褐煤的有12个;测定的煤样发热量均在25 MJ/kg左右,较29 MJ/kg标准值偏低,属中低发热量煤;稀贵元素测定发现部分样品锆、镓含量较高,富集后接近工业开采品味,具有潜在的综合利用价值;元素分析结果表明,样品中铬、镍、锌、磷、氯含量普遍较高,可根据含量用于制备化学用品,对于磷含量较高的煤样,其灰分可制备复合磷肥,用于农业生产。

关键词：煤质分析工业分析常量元素有害元素稀贵元素

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A highly porous animal bone-derived char with a superiority of promoting nZVI for Cr(Ⅵ)sequestration in agricultural soils

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Journal of Environmental Sciences 2021年第6期33卷 27-39页

作者： Kai Liu Fangbai Li qingwen Tian Chengrong Nie Yibing Ma Zhenlong zhu Liping Fang Yuanying Huang Siwen Liu Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management Institute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangzhou 510650China School of Food Science and Engineering Foshan universityFoshan 528225China Macao Environmental Research Institute Macao University of Science and TechnologyTaipaMacaoChina National Research Center for Geoanalysis Beijing 100037China Key Laboratory of Ministry of Natural Resources for Eco-geochemistry Beijing 100037China

Paddy soil and irrigation water are commonly contaminated with hexavalent chromium[Cr(Ⅵ)]near urban industrial areas,thereby threatening the safety of agricultural products and human *** this study,we develop a porous and high specific area bone char(BC)to support nanoscale zero-valent iron(n ZVI)and apply it to remediate Cr(Ⅵ)pollution in water and paddy soil under anaerobic *** batch experiments reveal that BC/n ZVI exhibits a higher removal capacity of 516.7 mg/(g·n ZVI)for Cr(Ⅵ)than n ZVI when normalized to the actual n ZVI content,which is 2.8 times that of n ZVI;moreover,the highest n ZVI utilization is the n ZVI loading of 15%(BC/n ZVI15).The Cr(Ⅵ)removal efficiency of BC/n ZVI15 decreases with increasing p H(4–10).Coexisting ions(phosphate and carbonate)and humic acid can inhibit the removal of Cr(Ⅵ)with BC/n ***,BC exhibits a strong advantage in promoting Cr(Ⅵ)removal by n ZVI compared to the widely used biochar and activated *** results demonstrate that reduction and coprecipitation are the dominant Cr(Ⅵ)removal ***,BC/n ZVI15 shows a significantly higher reduction and removal efficiency as well as a strong anti-interference ability for Cr(Ⅵ)in paddy soil,as compared to n *** findings provide a new effective material for remediating Cr(Ⅵ)pollution from water and soil.

关键词： Bone char Nano zero-valent iron Adsorption Chromium Reduction

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10例以脑发育不良为主要特征的脑瘫患儿的遗传学病因分析

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中华医学遗传学杂志 2019年第3期36卷 229-233页

作者：朱庆文倪玉飞王婧印洪刚张勤卞文君张伶莉林孟思刘江悦周君沙春秀周翔江苏省南通市妇幼保健院 210036

目的探讨脑瘫患儿的遗传学病因。方法对表型存在差异的1对双胞胎脑瘫患儿进行全基因组测序,对另外8例脑瘫患儿进行全外显子组测序,用自定义的过滤流程对所发现的基因变异进行筛选,探讨可能与脑瘫相关的生物学通路和基因。结果共发现3个... 详细信息

目的探讨脑瘫患儿的遗传学病因。方法对表型存在差异的1对双胞胎脑瘫患儿进行全基因组测序,对另外8例脑瘫患儿进行全外显子组测序,用自定义的过滤流程对所发现的基因变异进行筛选,探讨可能与脑瘫相关的生物学通路和基因。结果共发现3个与脑瘫相关的生物学通路,分别为轴突导向通路(axon guidance)、化学突触传播(transmission across chemical synapses)和突触处蛋白相互作用(protein-protein interactions at synapses),同时发现25个脑瘫易感基因。结论对脑瘫相关的分子机制进行了初步探讨,可能为脑瘫的药物开发提供新的线索。

关键词：脑瘫全基因组测序全外显子测序生物学通路

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