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Efficient hydrogen peroxide production enabled by exploring layered metal telluride as two electron oxygen reduction reaction electrocatalyst

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Journal of Energy Chemistry 2023年第12期87卷 247-255,I0007页

作者： Yingming Wang Hongyuan Yang Zhiwei Liu kui Yin Zhaowu Wang Hui Huang Yang Liu Zhenhui kang Ziliang Chen Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123JiangsuChina School of Physics and Engineering Longmen Laboratory Henan University of Science and TechnologyLuoyang 471023HenanChina Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyTaipa 999078MacaoChina Suzhou Weimu Intelligent System Co. Ltd.Suzhou 215123JiangsuChina

It is of great interest to develop the novel transition metal-based electrocatalysts with high selectivity and activity for two electron oxygen reduction reaction(2e^(-) ORR).Herein,the nickel ditelluride(NiTe_(2)) with layered structure was explored as the 2e^(-) ORR electrocatalyst,which not only showed the highest 2e^(-) selectivity more than 97%,but also delivered a slight activity decay after 5000 cycles in alkaline ***,when NiTe_(2) was assembled as the electrocatalyst in H-type electrolyzer,the on-site yield of H_(2)O_(2) could reach up to 672 mmol h^(-1)g^(-1) under 0.45 V *** in situ Raman spectra,theoretical calculation and post microstructural analysis synergistically unveiled that such a good 2e^(-) ORR performance could be credited to the intrinsic layered crystal structure,the high compositional stability,as well as the electron modulation on the active site Ni atoms by neighboring Te atoms,leading to the exposure of active sites as well as the optimized adsorption free energy of Ni to –*** inspiringly,such telluride electrocatalyst has also been demonstrated to exhibit high activity and selectivity towards 2e^(-) ORR in neutral media.

关键词： Transition metal telluride Oxygen reduction reaction Charge polarization Activity and selectivity Hydrogen peroxide

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TiO_(2)/Cu_(2)O heterostructure enabling selective and uniform lithium deposition towards stable lithium metal anodes

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Nano Research 2023年第4期16卷 4917-4925页

作者： Lingyan Ruan Xianying Qin kui Lin Zijin Yang Qiuchan Cai Tong Li Fangting Wu Feiyu kang Baohua Li Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolShenzhen 518055China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Shenzhen Graphene Innovation Center Co.Ltd. Shenzhen 518107China

Lithium(Li)metal is the ultimate anode choice for next generation high energy density ***,the high nucleation energy barrier and nonuniform electric field distribution,as well as huge volume expansion,lead to the uncontrollable growth of Li dendrites and poor utilization of Li metal,which hinders its practical ***,titanium dioxide/cuprous oxide(TiO_(2)/Cu_(2)O)heterostructure is constructed on the rimous skeleton of Cu mesh,and the heterostructure decorated rimous Cu mesh(H-CM)can act as both current collector and host for dendrite-free Li metal *** TiO_(2)/Cu_(2)O heterostructure realizes selective Li nucleation by nano TiO_(2)and then induces fast and uniform Li conduction with the aid of heterostructure interface and nano Cu_(2)O contributing to dendrite-free Li *** the internal and external space of rimous skeletons in H-CM is used to accommodate the deposited Li and buffer its volume ***,the cycling reversibility of the derived Li metal anode in H-CM is improved to a high Coulombic efficiency of 98.8%for more than 350 cycles at a current density of 1 mA·cm−2,and 1,000 h(equals to 500 cycles)stable repeated Li plating/stripping can be operated in a symmetric ***,full cells with limited Li anode and high loading LiFePO4 cathode present excellent cycling and rate performances.

关键词： lithium metal anode titanium dioxide/cuprous oxide(TiO2/Cu2O)heterostructure Cu mesh selective deposition dendritefree

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Effect of Beak Trimming Stress on the Apoptosis and Its Related Protein Expression of Chicken Spleen

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Journal of Integrative Agriculture 2012年第4期11卷 639-645页

作者： SUN Gui-rong LI Yan kang Xiang-tao TIAN Ya-dong ZHANG Hu LI kui College of Livestock Husbandry and Veterinary Engineering Henan Agricultural University Zhengzhou 450002 PR.China Henan Research Center of Breeding Resources for Poultry Zhengzhou 450002 P.R.China

Beak trimming was a part of routine husbandry for poultry industry,which was the most efficient and economic way to reduce the incidence of ***,the controversy about young chicken trimming still exits and it was drawing more concern recently along with the popular of animal behavior and welfare *** evaluate the influence of beak trimming on young chicken spleen development and find the key regulators of the spleen development,in this study,the electron microscope technique,flow cytometry and immunohistochemical techniques were used to investigate the effects of beak trimming stress on the spleen *** result of electronic microscope showed that significant stress response could be found in chicken spleen cells after beak *** volume became larger,chromatin of cell nuclear agglutinated conglobation,cytoplasm formed more vacuole,and mitochondria emerged vacuolization phenomenon in splenic lymphocyte after beak *** the flow cytometry,the lymphocyte of spleen in the control group and experimental group were mainly in G1 phase,and the remaining small amount was in S and M *** interest,the number of the lymphocyte which are in G1 phase within immune organ in the experimental group were more than that in the control group,but the number of cells in S and M phases were less than that in the control *** beak trimming decreased the lymphocytes proliferation index of *** result showed that the beak trimming stress did not affect the expression sites of two apoptosis-related genes,Bcl-2 and Bax,in the *** the expression level of Bcl-2 decreased while Bax increased in chicken immune organs after beak ***,the beak trimming increased spleen cell apoptosis with a time-dependant *** findings may make a contribution to the active precaution of stress response.

关键词： chicken beak trimming stress reaction spleen apoptosis

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Genome-wide identification,evolutionary selection,and genetic variation of DNA methylation-related genes in Brassica rapa and Brassica oleracea

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Journal of Integrative Agriculture 2022年第6期21卷 1620-1632页

作者： AN Feng ZHANG kang ZHANG Ling-kui LI Xing CHEN Shu-min WANG Hua-sen CHENG Feng Collaborative Innovation Center for Efficient and Green Production of Agriculture in Zhejiang Mountainous Areas College of Horticulture ScienceZhejiang A&F UniversityHangzhou 311300P.R.China Institute of Vegetables and Flowers Chinese Academy of Agricul tural SciencesBeijing 100081P.R.China

DNA methylation plays an important role in plant growth and development,and in regulating the activity of transposable elements(TEs).Research on DNA methylation-related(DMR)genes has been reported in Arabidopsis,but little research on DMR genes has been reported in Brassica rapa and Brassica oleracea,the genomes of which exhibit significant differences in TE *** this study,we identified 78 and 77 DMR genes in Brassica rapa and Brassica oleracea,*** analysis revealed that the numbers of DMR genes in different DMR pathways varied in *** and *** evolutionary selection pressure of DMR genes in *** and *** was compared,and the DMR genes showed differential evolution between these two *** nucleotide diversity(π)and selective sweep(Tajima’s D)revealed footprints of selection in the *** and *** *** analysis showed that most DMR genes exhibited similar expression characteristics in *** and *** study dissects the evolutionary differences and genetic variations of the DMR genes in *** and ***,and will provide valuable resources for future research on the divergent evolution of DNA methylation between *** and ***.

关键词： DNA methylation Brassica rapa Brassica oleracea evolutionary selection genetic variation gene expression

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The impact of tandem duplication on gene evolution in Solanaceae species

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Journal of Integrative Agriculture 2022年第4期21卷 1004-1014页

作者： HUANG Yi-le ZHANG Ling-kui ZHANG kang CHEN Shu-min HU Jian-bin CHENG Feng College of Horticulture Henan Agricultural UniversityZhengzhou 450002P.R.China Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100097P.R.China

Whole genome duplication(WGD) and tandem duplication(TD) are important modes of gene amplification and functional innovation, and they are common in plant genome evolution. We analyzed the genomes of three Solanaceae species(Solanum lycopersicum, Capsicum annuum, and Petunia inflata), which share a common distant ancestor with Vitis vinifera, Theobroma cacao, and Coffea canephora but have undergone an extra whole genome triplication(WGT) event. The analysis was used to investigate the phenomenon of tandem gene evolution with(S. lycopersicum) or without WGT(V. vinifera). Among the tandem gene arrays in these genomes, we found that V. vinifera, which has not experienced the WGT event, retained relatively more and larger tandem duplicated gene(TDG) clusters than the Solanaceae species that experienced the WGT event. Larger TDG clusters tend to be derived from older TD events, so this indicates that continuous TDGs(absolute dosage) accumulated during long-term evolution. In addition, WGD and TD show a significant bias in the functional categories of the genes retained. WGD tends to retain dose-sensitive genes related to biological processes, including DNA-binding and transcription factor activity, while TD tends to retain genes involved in stress resistance. WGD and TD also provide more possibilities for gene functional innovation through gene fusion and fission. The TDG cluster containing the tomato fusarium wilt resistance gene I3 contains 15 genes, and one of these genes, Solyc07g055560, has undergone a fusion event after the duplication events. These data provide evidence that helps explain the new functionalization of TDGs in adapting to environmental changes.

关键词： tandem duplication whole genome duplication Solanaceae species gene retention gene fusion

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省级一流课程建设模式探索与实践——以动物学课程为例

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高教学刊 2024年第30期10卷 27-30,34页

作者：唐艳龙张道伟康奎曾伯平迟庆生李春涛王丽娜遵义师范学院生物与农业科技学院贵州遵义563000

动物学是遵义师范学院生物科学专业核心课程,2017年获批贵州省级一流课程建设课程。教学团队对动物学一流课程的建设模式进行探索和实践,在优化教学大纲的基础上,一方面改革教学内容,包括打破课程章节界限,系统总结知识点,建设慕课,强... 详细信息

动物学是遵义师范学院生物科学专业核心课程,2017年获批贵州省级一流课程建设课程。教学团队对动物学一流课程的建设模式进行探索和实践,在优化教学大纲的基础上,一方面改革教学内容,包括打破课程章节界限,系统总结知识点,建设慕课,强化学生自学,融入课程思政元素等;另一方面创新教学模式,包括充分利用翻转课堂、分组讨论、灵活提问、线上线下结合、课内课外结合和理论实践结合等,将传统教学以传授知识为主改革为以培养学生能力为主。课程改革后,学生对课程及教师评价明显提高,课程成绩、课堂教学效果和学生满意度均明显提升。

关键词：一流课程课程改革课程思政慕课动物学

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Microstructure evolution of loess under multiple collapsibility based on nuclear magnetic resonance and scanning electron microscopy

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Journal of Mountain Science 2021年第10期18卷 2612-2625页

作者： WANG Hai-man NI Wan-kui YUAN kang-ze LI Lan NIE Yong-peng GUO Ye-xia College of Geological Engineering and Geomatics Chang’an UniversityXi'an 710054China Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of EducationChang’an UniversityXi'an 710054China

In recent years, the acceleration of urbanization in loess areas has prompted frequent dismantling and reconstruction of old urban areas. Demolition and reconstruction of buildings involve multiple collapses of the foundation. To study microstructure evolution of loess under multiple collapsibility, this paper selects undisturbed loess samples from Guyuan, Northwest China for multiple compression tests. Using nuclear magnetic resonance(NMR) imaging and scanning electron microscopy(SEM) as auxiliary methods, a combination of qualitative and quantitative analyses was used to study the microstructure of loess samples before and after various number of collapses under different pressures. Results show that the loess does undergo multiple collapse under 200 kPa pressure. Pore is an important reason for loess collapse. The initial collapse comes primarily from the compression of macropores and mesopores, and the second collapse comes primarily from mesopore compression. The compression process of loess can be roughly divided into two stages. First, under the action of dissolution and compression, the relative displacement of soil particles occurs. Macropores and mesopores are destroyed first, generating small pores. Second, with increasing pressure and times of collapses, pore compression gradually transforms into small pore compression. During the first collapse, particle aggregates disintegrate due to water and pressure. However, with increasing times of collapses, the contact relationship between particles gradually changes from the point contact to face contact. Loess particles tend to gradually become rounded. The study of the microstructure provides the possibility to further reveal the mechanism of multiple collapsibility of loess.

关键词： Loess Multiple collapse Microstructure Nuclear magnetic resonance Pore volume

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A new perspective on hydrogenation of CO2 into methanol over heterogeneous catalysts

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Progress in Natural Science:Materials International 2024年第3期34卷 482-494页

作者： Xueyuan Pan Jingcheng Xu Yali Wang Mingzhe Ma Haiquan Liao Hao Sun Mengmeng Fan kui Wang kang Sun Jianchun Jiang Key Lab.of Biomass Energy and Material Jiangsu Province Key and Open Lab.of Forest Chemical Engineering SFA National Engineering Lab.for Biomass Chemical Utilization Institute of Chemical Industry of Forest Products Chinese Academy of Forestry Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry University

The utilization of carbon dioxide is critical to realize the objective of "carbon peak and neutrality". Among various carbon dioxide exploitation approaches, catalytic hydrogenation of carbon dioxide is a significant method to selectively convert the CO2into methanol and other valuable chemicals. Among these products, methanol is a crucial chemical feedstock that can be utilized as a platform molecule for the synthesis of chemicals and fuels as well as a fuel for internal combustion engines and fuel cells, causing particular interest. Nowadays, Catalytic hydrogenation of carbon dioxide into methanol has shifted its focus on the creation of low-cost, environmentally friendly, and efficient catalysts. Inspired of this, we have concluded the mechanism of catalytic hydrogenation of carbon dioxide, and reviewed the research progress of multiple heterogeneous catalysts with high catalytic application prospect, especially the supported catalysts.

关键词： Carbon dioxide Heterogeneous catalyst Hydrogenation Methanol

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Scaffolds Prepared with Bovine Hydroxyapatite Composites by 3D Printing

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Journal of Wuhan University of Technology(Materials Science) 2019年第1期34卷 230-235页

作者： LIU kang ZHANG Xianglin College of Materials Science and Engineering Huazhong University of Science and Technology

The bovine hydroxyapatite(BHA) was applied to prepare biological tissue engineering scaffolds by the method of extrusion freeforming. To achieve this goal, BHA were added to sodium alginate(SA) solution to form a slurry system in appropriate proportion. The resulting mixtures were fabricated to be a kind of controllable and porous scaffolds followed with cross-linking in 5% calcium chloride(CaCl_2) solution for 24 h. After that, the scaffolds were sintered in air at 1 000, 1 100, 1 200 and 1 300 ℃ for 5 h. Scanning electron microscopy(SEM) and X-ray diffraction(XRD) studies were performed on the scaffolds to analyze its microstructure and constituent. To explore the effect of sintering temperature on scaffolds, the compressive strength, volume shrinkage and water absorptivity of BHA-SA composite scaffolds after sintering were investigated. The research tests indicated the feasibility of applying BHA powder to 3D printing. Besides, the scaffolds sintered in a respectively lower temperature possess much more pores and performed higher water absorptivity, which means better cellular affinity. And scaffolds sintered between 1 100 and 1 200℃ presents higher compressive strength.

关键词： bovine bone hydroxyapatite ball milling sintering 3D printing controllable scaffolds

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Commercially Viable Hybrid Li-Ion/Metal Batteries with High Energy Density Realized by Symbiotic Anode and Prelithiated Cathode

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Nano-Micro Letters 2022年第9期14卷 174-186页

作者： kui Lin Xiaofu Xu Xianying Qin Ming Liu Liang Zhao Zijin Yang Qi Liu Yonghuang Ye Guohua Chen Feiyu kang Baohua Li Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolShenzhen 518055People’s Republic of China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084People’s Republic of China Contemporary Amperex Technology Co.Ltd. Ningde 352100People’s Republic of China Shenzhen Graphene Innovation Center Co.Ltd. Shenzhen 518055People’s Republic of China College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong Kong 999077People’s Republic of China

The energy density of commercial lithium(Li)ion batteries with graphite anode is reaching the *** is believed that directly utilizing Li metal as anode without a host could enhance the battery’s energy density to the maximum ***,the poor reversibility and infinite volume change of Li metal hinder the realistic implementation of Li metal in battery ***,a commercially viable hybrid Li-ion/metal battery is realized by a coordinated strategy of symbiotic anode and prelithiated *** be specific,a scalable template-removal method is developed to fabricate the porous graphite layer(PGL),which acts as a symbiotic host for Li ion intercalation and subsequent Li metal deposition due to the enhanced lithiophilicity and sufficient ion-conducting pathways.A continuous dissolution-deintercalation mechanism during delithiation process further ensures the elimination of dead *** a result,when the excess plating Li reaches 30%,the PGL could deliver an ultrahigh average Coulombic efficiency of 99.5% for 180 cycles with a capacity of 2.48 m Ah cm^(-2) in traditional carbonate ***,an air-stable recrystallized lithium oxalate with high specific capacity(514.3 m Ah g^(-1))and moderate operating potential(4.7-5.0 V)is introduced as a sacrificial cathode to compensate the initial loss and provide Li source for subsequent *** on the prelithiated cathode and initial Li-free symbiotic anode,under a practical-level3 m Ah capacity,the assembled hybrid Li-ion/metal full cell with a P/N ratio(capacity ratio of Li Ni_(0.8)Co_(0.1)Mn_(0.1)O_(2) to graphite)of 1.3exhibits significantly improved capacity retention after 300 cycles,indicating its great potential for high-energy-density Li batteries.

关键词： Hybrid lithium-ion/metal battery Symbiotic anode Porous graphite layer Cathode prelithiation Lithium oxalate

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