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Nitrogen-Doped Carbon-Encased Bimetallic Selenide for High-Performance Water Electrolysis

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Nano-Micro Letters 2019年第4期11卷 185-195页

作者： Junhui Cao Kexin Wang Jiayi Chen chaojun Lei Bin Yang Zhongjian Li Lecheng Lei Yang hou Kostya Ostrikov Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310058People’s Republic of China Ningbo Research Institute Zhejiang UniversityNingbo 315100People’s Republic of China Institute of Zhejiang University-Quzhou 78 Jiuhua Boulevard NorthQuzhou 324000People’s Republic of China School of Chemistry Physicsand Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD 4000Australia

Demand of highly efficient earth-abundant transition metal-based electrocatalysts to replace noble metal materials for boosting oxygen evolution reaction(OER)is rapidly ***,an electrochemically exfoliated graphite(EG)foil supported bimetallic selenide encased in N-doped carbon(EG/(Co,Ni)Se2-NC)hybrid is developed and synthesized by a vapor-phase hydrothermal strategy and subsequent selenization *** as-prepared EG/(Co,Ni)Se2-NC hybrid exhibits a core-shell structure where the particle diameter of(Co,Ni)Se2 core is about 70 nm and the thickness of N-doped carbon shell is approximately 5 *** from the synergistic effects between the combination of highly active Co species and improved electron transfer from Ni species,and N-doped carbon,the EG/(Co,Ni)Se2-NC hybrid shows remarkable electrocatalytic activity toward OER with a comparatively low overpotential of 258 mV at an current density of 10 mA cm?2 and a small Tafel slope of 73.3 mV dec?*** excellent OER catalysis performance of EG/(Co,Ni)Se2-NC hybrid is much better than that of commercial Ir/C(343 mV at 10 mA cm?2 and 98.1 mV dec?1),and even almost the best among all previously reported binary CoNi selenide-based OER ***,in situ electrochemical Raman spectroscopy combined with ex situ X-ray photoelectron spectroscopy analysis indicates that the superb OER catalysis activity can be attributed to the highly active Co-OOH species and modified electron transfer process from Ni element.

关键词： Core-shell structure Bimetallic selenide N-doped carbon Synergistic effect Oxygen evolution reaction

A Superaerophobic Bimetallic Selenides Heterostructure for Efficient Industrial-Level Oxygen Evolution at Ultra-High Current Densities

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Nano-Micro Letters 2020年第8期12卷 213-224页

作者： Jiaxin Yuan Xiaodi Cheng Hanqing Wang chaojun Lei Sameer Pardiwala Bin Yang Zhongjian Li Qinghua Zhang Lecheng Lei Shaobin Wang Yang hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Institute of Zhejiang University-Quzhou Quzhou 324000People’s Republic of China Ningbo Research Institute Zhejiang UniversityNingbo 315100People’s Republic of China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Cost-effective and stable electrocatalysts with ultra-high current densities for electrochemical oxygen evolution reaction(OER)are critical to the energy crisis and environmental ***,we report a superaerophobic three dimensional(3D)heterostructured nanowrinkles of bimetallic selenides consisting of crystalline NiSe2 and NiFe2Se4 grown on NiFe alloy(NiSe2/NiFe2Se4@NiFe)prepared by a thermal selenization *** this unique 3D heterostructure,numerous nanowrinkles of NiSe2/NiFe2Se4 hybrid with a thickness of ~100 nm are grown on NiFe alloy in a uniform *** by the large active surface area and high electronic conductivity,the superaerophobic NiSe2/NiFe2Se4@NiFe heterostructure exhibits excellent electrocatalytic activity and durability towards OER in alkaline media,outputting the low potentials of 1.53 and 1.54 V to achieve ultra-high current densities of 500 and 1000 mA cm^−2,respectively,which is among the most active Ni/Fe-based selenides,and even superior to the benchmark Ir/C *** in-situ derived FeOOH and NiOOH species from NiSe2/NiFe2Se4@NiFe are deemed to be efficient active sites for OER.

关键词： Superaerophobicity Bimetallic selenide Heterostructure electrocatalyst Strong interfacial coupling Oxygen evolution reaction

CuS/RGO hybrid by one-pot hydrothermal method for efficient electrochemical sensing of hydrogen peroxide

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Chinese Chemical Letters 2017年第6期28卷 1306-1311页

作者： Wei Liu chaojun Lei Hongxiu Zhang Xiaolin Wu Qing Jia Denghong He Bin Yang Zhongjian Li Yang hou Lecheng Lei Xingwang Zhang Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 China

In this study,a non-enzymatic hydrogen peroxide sensor was successfully fabricated on the basis of copper sulfide nanoparticles/reduced graphene oxide（CuS/RGO） *** thiourea as reducing agent and sulfur donor,CuS/RGO hybrid was synthesized through a facile one-pot hydrothermal method,where the reduction of GO and deposition of CuS nanoparticles on RGO occur *** results confirmed that the CuS/RGO hybrid helps to prevent the aggregation of CuS *** investigation showed that the as-prepared hydrogen peroxide sensor exhibited a low detection limit of 0.18μmol/L（S/N = 3）,a good reproducibility（relative standard deviation（RSD） of4.21%）,a wide linear range（from 3 to 1215 μmol/L） with a sensitivity of 216.9 μA L/mmol/cm-2 under the optimal ***,the as-prepared sensor also showed excellent selectivity and stability for hydrogen peroxide *** excellent performance of CuS/RGO hybrid,especially the lower detection limit than certain enzymes and noble metal nanomaterials ever reported,makes it a promising candidate for non-enzymatic H2O2 sensors.

关键词： CuS nanoparticles Reduced graphene oxide Non-enzymatic sensor Hydrogen peroxide Electrochemical catalyst

Prediction of VIGS efficiency by the Sfold program and its reliability analysis in Gossypium hirsutum

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Science Bulletin 2016年第7期61卷 543-551页

作者： Xiaoyang Ge Jie Wu chaojun Zhang Qianhua Wang Yuxia hou Zuoren Yang Zhaoen Yang Zhenzhen Xu Ye Wang Lili Lu Xueyan Zhang Jinping Hua Fuguang Li State Key Laboratory of Cotton Biology Institute of Cotton Research Chinese Academy of Agricultural Sciences Department of Plant Genetics and Breeding Key Laboratory of Crop Heterosis and Utilization of Ministry of Education Beijing Key Laboratory of Crop Genetic Improvement China Agricultural University College of Science China Agricultural University

Genetic transformation in some plant species, including cotton （Gossypium hirsutum）, is hampered by laborious and time-consuming processes and often unachievable. Virus-induced gene silencing （VIGS） by double-stranded RNAs can serve as a reverse-genetics tool to determine gene function. However, knockdown levels vary greatly when using a tobacco rattle virus-based vector that carries different cDNA fragments of a gene. How to choose the optional target fragment for high interference efficiency is very challenging. Addressing this challenge requires increasing the efficacy of small interference RNA （siRNA） in target fragment. Here, we describe a method to assess VIGS efficiency by comparing the following parameters of siRNA in target sequence： the disruptionenergy of the target （△Gdisruption）, the differential stability of siRNA duplex ends （DSSE）, and the internal stability at positions 9-14 of the siRNA antisense strand （AIS）, which are calculated by Sfold program （http：//***. org）. We find that the siRNAs with low mGdisruption, high DSSE and high AIS have high activity and easily result in high VIGS efficiency by experimentally testing the actual knockdown levels of the four target genes, GhPDS, GhCLA1, GhAOS1, and GhCXE1 via choosing different target sequences for each gene. Therefore, the Sfold pro- gram can be used to analyze target sequences when car- rying out VIGS design to increase gene-silencing effects in plants.

关键词： VIGS Sfold program siRNA Targetsequences Gossypium hirsutum

Bimetallic Oxyhydroxide as a High-Performance Water Oxidation Electrocatalyst under Industry-Relevant Conditions

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Engineering 2021年第9期7卷 1306-1312页

作者： Jiaxin Yuan Xiaodi Cheng chaojun Lei Bin Yang Zhongjian Li Kun Luo K.H.Koko Lam Lecheng Lei Yang hou Kostya Ken Ostrikov Key Laboratory of Biomass Chemical Engineering of the Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University–Quzhou Quzhou 324000China State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou 310027China Department of Electrical Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China School of Chemistry Physicsand Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD 4001Australia

Developing high-performing oxygen evolution reaction(OER)electrocatalysts under high-current operation conditions is critical for future commercial applications of alkaline water electrolysis for clean energy ***,we prepared a three-dimensional(3D)bimetallic oxyhydroxide hybrid grown on a Ni foam(NiFeOOH/NF)prepared by immersing Ni foam(NF)into Fe(NO_(3))_(3) *** this unique 3D structure,the NiFeOOH/NF hybrid was composed of crystalline Ni(OH)_(2) and amorphous FeOOH evenly grown on the NF *** a bimetallic oxyhydroxide electrocatalyst,the NiFeOOH/NF hybrid exhibited excellent catalytic activity,surpassing not only the other reported Ni–Fe based electrocatalysts,but also the commercial Ir/C *** situ electrochemical Raman spectroscopy demonstrated the active FeOOH and NiOOH phases involved in the OER *** from the synergy of Fe and Ni catalytic sites,the NiFeOOH/NF hybrid delivered an outstanding OER performance under challenging industrial conditions in a 10.0 mol·L^(-1) KOH electrolyte at 80℃,requiring potentials as small as 1.47 and 1.51 V to achieve the super-high catalytic current densities of 100 and 500mA∙cm^(-2),respectively.

关键词： Bimetallic oxyhydroxide 3D hybrid Electrocatalysis Oxygen evolution reaction High current density

胃复春片联合兰索拉唑对慢性萎缩性胃炎患者临床症状及氧化应激反应的影响

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当代医学 2023年第25期29卷 147-149页

作者：侯朝军赵大营张玉颖峄城区人民医院消化内科山东枣庄277300 峄城区人民医院药房山东枣庄277300 峄城区人民医院护理部山东枣庄277300

目的探讨胃复春片联合兰索拉唑在慢性萎缩性胃炎(CAG)患者中的应用价值。方法选取2019年7月至2021年7月枣庄市峄城区人民医院收治的82例CAG患者作为研究对象,按照随机数字表法分为对照组与研究组,每组41例。对照组予以兰索拉唑治疗,研... 详细信息

目的探讨胃复春片联合兰索拉唑在慢性萎缩性胃炎(CAG)患者中的应用价值。方法选取2019年7月至2021年7月枣庄市峄城区人民医院收治的82例CAG患者作为研究对象,按照随机数字表法分为对照组与研究组,每组41例。对照组予以兰索拉唑治疗,研究组在对照组基础上采用胃复春片治疗,比较两组临床症状评分、氧化应激反应、血清胃泌素(GAS)及胃动素(MTL)水平及不良反应发生情况。结果治疗后,两组胃脘胀痛、嗳气泛酸、胃中嘈杂、口苦口干评分均低于治疗前,且研究组低于对照组,差异有统计学意义(P<0.05)。治疗后,两组SOD、NO水平均高于治疗前,GAS、MTL水平均低于治疗前,且研究组SOD、NO水平均高于对照组,GAS、MTL水平均低于对照组,差异有统计学意义(P<0.05)。两组均未出现不良反应。结论胃复春片联合兰索拉唑能有效改善CAG患者临床症状,抑制GAS、MTL分泌,减轻机体氧化应激反应,未增加不良反应,安全性较高。

关键词：慢性萎缩性胃炎胃复春片兰索拉唑临床症状氧化应激反应

元素A对钨青铜A_xWO_3晶体结构的影响

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功能材料 2015年第17期46卷 17008-17013页

作者：郭娟卢喜凤郜超军侯晓强郑州大学物理工程学院郑州450001

AxWO3(0 详细信息

AxWO3(0

关键词：钨青铜离子半径和价态晶体结构

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用累积地震矩法研究全球地震活动性

国际地震动态 2010年第8期31卷 38-45页

作者：侯燕燕张晁军中国地震台网中心北京100045

本文基于Lomnitz提出的MRI理论,用"累积地震矩(CSM)"算法对全球1900—1999年7级以上的地震进行了处理,试图通过分析大震前CSM图像的变化,来判断地震发生的可能性。对不同地区的6个地震震前CSM图像的分析表明:7级以上地震的CSM图像在震前... 详细信息

本文基于Lomnitz提出的MRI理论,用"累积地震矩(CSM)"算法对全球1900—1999年7级以上的地震进行了处理,试图通过分析大震前CSM图像的变化,来判断地震发生的可能性。对不同地区的6个地震震前CSM图像的分析表明:7级以上地震的CSM图像在震前5到10年内会改变,大部分地震发生在CSM的高值区或次高值区。通过实际运算发现:在不同的地区应使用不同的值可获得较好的结果,用于计算的地震数越多,获得的结果越好。有些大地震前CSM异常区域不是唯一的,往往会出现几个,这可能与研究区域的地震活动性有关。因此,笔者认为:若要获得可靠的CSM图像,除应当考虑不同地区的小震活动水平外,还应考虑地震断层对震后能量分布影响。统计结果表明:在目标地震发生后,下一次地震在空间上发生在原地及2度距离范围内的概率较大,在3度以外区域发生的概率相差不大;在时间上,发生在原地区震后1年内的概率最高,这可能与余震活动有关;在5年的时间里,下一次地震发生的次数占到全部地震的70%以上。因此,要注意大地震后,目标地震附近有地震能量进一步释放的危险性。

关键词：累积地震矩 7级以上地震下一次地震

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乘用车储物空间精确测量及逆向方法

汽车工程师 2019年第9期 49-51页

作者：侯博瑞黄超俊宝沃汽车有限公司

储物容积是乘用车储物空间评价的重要指标。传统的测量方法和点云逆向并不能精准地计算与衡量容积数值。通过对实车储物空间的多方位测量、记录,并在CATIA软件上进行逆向,形成不同车型的数据库。使用该方法进行测量的结果与实际容积相比... 详细信息

储物容积是乘用车储物空间评价的重要指标。传统的测量方法和点云逆向并不能精准地计算与衡量容积数值。通过对实车储物空间的多方位测量、记录,并在CATIA软件上进行逆向,形成不同车型的数据库。使用该方法进行测量的结果与实际容积相比,大储物空间误差范围在±0.1 L,小储物空间误差范围在±0.03 L。通过数据库可以客观地了解标杆车或竞品车储物空间容积的优劣,该方法可以有效指导乘用车储物空间的设计。

关键词：乘用车储物空间尺寸测量容积逆向标杆分析