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Interlayer-expanded MoS2 assemblies for enhanced electrochemical storage of potassium ions

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Nano Research 2020年第1期13卷 225-230页

作者： Sijia Di Pan Ding Yeyun Wang yunling wu Jun Deng Lin Jia Yanguang Li Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou215123China

Potassium-ion batteries are regarded as the low-cost alternative to lithium-ion ***,their development is hampered by the lack of suitable electrode *** this work,we demonstrate that MoS2 with expanded interlayers represents a promising candidate for the electrochemical storage of potassium *** interlayer-expanded MoS2 assemblies supported on carbon nanotubes are prepared via a straightforward solution *** increased interlayer spacing not only enables the better accommodation of foreign ions,but also lowers the diffusion energy barrier and improves diffusion kinetics of *** investigated as the anode material of potassium ion batteries,our interlayer-expanded MoS2 assemblies exhibit an excellent electrochemical performance with large capacity(up to∼520 mAhg^−1),good rate capability(∼310 mAhg^−1 at 1,000 mAg^−1)and impressive cycling stability,superior to most competitors.

关键词： molybdenum disulfide interlayer expansion potassium ion batteries hierarchical structure

Cobalt atoms dispersed on hierarchical carbon nitride support as the cathode electrocatalyst for high-performance lithium-polysulfide batteries

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Science Bulletin 2019年第24期64卷 1875-1880页

作者： Jialing wu Junmei Chen Yang Huang Kun Feng Jun Deng Wei Huang yunling wu Jun Zhong Yanguang Li Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University

Lithium-sulfur batteries are promising candidates for next-generation energy storage but are confronted with several challenges. One of the possible solutions is to design proper cathode electrocatalysts to accelerate the redox interconversion of solvated polysulfide intermediates. Herein, we report cobalt atoms dispersed on hierarchical carbon nitride support as an effective cathode electrocatalyst for lithium-polysulfide batteries. The electrocatalyst material is prepared from the simple reaction between melamine and cyanuric acid in the presence of Co^2+, followed by the Ar annealing. The product has a unique hierarchical structure consisting of many thin and porous C3 N4 nanosheets finely dispersed with Co atoms. The atomic dispersion of Co species is confirmed by X-ray absorption *** measurements reveal that it can promote the interconversion of polysulfides. As a result,batteries using this cathode electrocatalyst achieve large capacity($1400 mAh/g at 1.6 mA/cm^2), good rate performance($800 mAh/g at 12.8 mA/cm^2) and impressive cycling stability under different current densities and different sulfur loadings.

关键词： Li-polysulfide battery Cathode electrocatalyst Carbon nitride Cobalt single atom

Bacteriophages assisted bacteria to facilitate soil multifunctionality under organochlorine pesticide contamination

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Science China(Technological Sciences) 2024年第10期67卷 3116-3128页

作者： ZHAO DuoKai CHAO HuiZhen BALCAZAR Jose Luis wu ShiMao ZHENG XiaoXuan wu yunling YUAN ShuJian SUN MingMing HU Feng Soil Ecology Lab Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization and Jiangsu Key Laboratory for Solid Organic Waste UtilizationNanjing Agriculture UniversityNanjing 210095China J.F.Blumenbach Institute of Zoology and Anthropology University of GöttingenUntere Karspüle 2Göttingen 37073Germany Catalan Institute for Water Research(ICRA) Girona 17003Spain University of Girona Girona 17004Spain College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310085China

As the most abundant living entities in the environment,viruses have been well recognized as crucial members in sustaining biogeochemical ***,the significance of viruses in soil ecosystem multifunctionality remains *** this study,we used metagenomics and meta-viromics analysis to investigate the role of soil viruses in soil ecosystem functions under heavy,light,and no organochlorine pesticides(OCPs)*** the three types of soil samples collected,lightcontaminated soils supported the highest level of multifunctionality,followed by heavy-contaminated soils and clean ***,our results revealed a positive correlation between bacterial community evenness and multifunctionality index(p<0.05).Dominant bacterial species with biodegradation and stress resistance advantages exhibited higher abundance in OCPaffected soils,potentially playing a core functional supporting ***,our results indicated that the species richness and diversity of bacteriophages were positively correlated with multifunctionality(p<0.05)in OCP-affected *** in OCP-affected soils regulate host metabolism and enhance soil ecosystem multifunctionality by infecting functional bacterial hosts and encoding AMGs related to soil element *** findings emphasize the potential effect of phages on ecosystem multifunctionality in contaminated soil,suggesting that phages may serve as contributors to soil ecology beyond bacteria and other ***,in polluted or constrained soils,further research could potentially translate phage communities and related ecological processes into artificial methods for application in soil pollution remediation or ecological restoration.

关键词： soil ecosystem multifunctionality viruses auxiliary metabolic genes organochlorine pesticides contamination

Selective electrocatalytic CO2 reduction enabled by SnO2 nanoclusters

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Journal of Energy Chemistry 2019年第10期28卷 93-96页

作者： Hui Yang Yang Huang Jun Deng yunling wu Na Han Chenyang Zha Leigang Li Yanguang Li Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University

The development of high-performance electrocatalysts holds the decisive key to the electrochemical CO2 reduction toward value-added products. Formic acid or formate is a desirable reduction product, but its selective production is often challenging. Tin based-materials have attracted great attention for formate production, and yet their performances are far from satisfactory. In this study, we reported the preparation of SnO2 nanoclusters from the controlled self-polymerization of dopamine together with SnO32-, followed by the mild-temperature calcination. The final product consisted of large primary particles that were further made of small secondary SnO2 nanocrystals. When evaluated as the electrocatalyst for CO2 reduction in 0.5 M NaHCO3, our material exhibited impressive activity, selectivity and stability for the selective CO2 reduction to formate. A peak formate Faradaic efficiency of^73% and large partial current density of 16.3 mA/cm2 was achieved at -0.92 V versus reversible hydrogen electrode.

关键词： CO2 reduction reaction Electrocatalysts Formate Tin oxide Selectivity

Highly crystalline and water-wettable benzobisthiazole-based covalent organic frameworks for enhanced photocatalytic hydrogen production

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National Science Review 2023年第1期10卷 268-276页

作者： Wei Huang Yongpan Hu Zhengyuan Qin Yujin Ji Xuan Zhao yunling wu Qing He Youyong Li Chunfeng Zhang Jun Lu Yanguang Li Institute of Functional Nano and Soft Materials(FUNSOM) Soochow University Jiangsu Key Laboratory for Advanced Negative Carbon Technologies Soochow University National Laboratory of Solid State Microstructures School of Physics and Collaborative Innovation Center for Advanced MicrostructuresNanjing University Macao Institute of Materials Science and Engineering (MIMSE) MUST-SUDA Joint Research Center for Advanced Functional Materials Macau University of Science and Technology College of Chemical and Biological Engineering Zhejiang University

Two-dimensional covalent organic frameworks are promising for photocatalysis by virtue of their structural and functional diversity,but generally suffer from low activities relative to their inorganic *** fulfill their full potential re quires a rational tailoring of their structures at different scales as well as their surface ***,we demonstrate benzobisthiazole-based covalent organic frameworks as a superior photocatalyst for hydrogen *** product features high crystallinity with ordered 2.5-nm-wide cylindrical mesopores and great water *** structural advantages afford our polymeric photo catalyst with fast charge carrier dynamics as evidenced by a range of spectroscopic characterizations and excellent catalytic performances when suspended in solution or supported on melamine *** visible-light irradiation,it enables efficient and stable hydrogen evolution with a production rate of 487 μmol h-1(or a mass-specific rate of 48.7 mmol g-1h-1)—far superior to the previous state of the *** also demonstrate that hydrogen production can be stoichiometrically coupled with the oxidation conversion of biomass as exemplified by the conversion of furfuryl alcohol to 2-furaldehyde.

关键词： covalent organic frameworks photocatalysis hydrogen evolution benzobisthiazole water-wettable

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镁离子电池正极材料研究进展

物理化学学报 2023年第2期39卷 27-37页

作者：张默淳冯硕邬赟羚李彦光苏州大学功能纳米与软物质研究院江苏苏州215123 澳门科技大学材料科学与工程研究院中国澳门氹仔岛999078

镁离子电池(MIBs)因镁资源储量丰富、体积能量密度大、金属镁空气中相对稳定等优势,被认为是具有大规模储能应用潜力的电池体系。然而,镁离子较高的电荷密度和较强的溶剂化作用导致其在正极材料中的可逆脱嵌和固-液界面上的离子扩散相... 详细信息

镁离子电池(MIBs)因镁资源储量丰富、体积能量密度大、金属镁空气中相对稳定等优势,被认为是具有大规模储能应用潜力的电池体系。然而,镁离子较高的电荷密度和较强的溶剂化作用导致其在正极材料中的可逆脱嵌和固-液界面上的离子扩散相当缓慢,严重影响了MIBs的电化学性能。近年来,人们针对MIBs正极材料开展了大量工作,取得了一定进展,但是还存在不少问题。本文先从MIBs体系的特点出发,阐述其优势和目前所面临的主要挑战,然后从无机正极材料和有机正极材料两方面展开,梳理并总结了各类正极材料的局限性及其解决策略,对优化方法和材料性能间的相关性进行归纳和讨论,为今后进一步发展具有优异电化学性能的MIBs正极材料提供可能的参考。

关键词：镁离子电池嵌入型正极转化型正极有机正极

新时期基层消防火灾调查存在的问题及解决对策探究

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Studies on the development of Plasmodium yoelii yoelii in Anopheles stephensi and a comparison of the susceptibility of three Anopheline mosquitoes.

中国科技纵横 2021年第5期 117-118页

作者：巫昀玲内江市消防救援支队四川内江 641000

当前,城市化的建设进程虽然在不断推进,但是所产生的消防隐患也在逐渐增多,导致火灾事故频发发生.面对这种情况,相关消防单位需要对引发火灾的因素及火灾产生的具体原因进行科学分析,以便做好消防预防工作.基于此,本文分析了新时期基层... 详细信息

当前,城市化的建设进程虽然在不断推进,但是所产生的消防隐患也在逐渐增多,导致火灾事故频发发生.面对这种情况,相关消防单位需要对引发火灾的因素及火灾产生的具体原因进行科学分析,以便做好消防预防工作.基于此,本文分析了新时期基层消防火灾调查工作中存在的问题,研究了新时期基层消防火灾调查工作问题解决的有效对策,以供参考.

关键词：新时期消防火灾调查问题对策

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中国寄生虫学与寄生虫病杂志 1983年第S1期 8-9页

作者： Chen Peihui,Li Huichu, Wang Fengyun, Yang Lianxue, Shi Menghui, wu Hong, Shi yunling, Wang Shufen, Guo Baozhong: Department of Parasitology, Beijing Second Medical College

1. Male and female gametes appeared in 7-60 minutes and 7 min-48 h afterinfective meal, zygotes in 15 min-48 h, mature ookinetes in 4.5-52 h, but mostnumerous in 12-15 h. The early stage oocyst appeared in 24 h and th... 详细信息

关键词： Studies on the development of Plasmodium yoelii yoelii in Anopheles stephensi and a comparison of the susceptibility of three Anopheline mosquitoes

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自身免疫性胃炎关联疾病3例报道并文献复习

诊断学理论与实践 2021年第5期20卷 484-490页

作者：谭英斌谢玲吴云林陈平江苏省昆山市中西医结合医院脾胃病科江苏昆山215300 上海交通大学医学院附属瑞金医院北部院区消化内科上海201801

目的:分析自身免疫性胃炎关联性疾病病例的临床特点,结合文献进行分析总结,以期指导临床实践。方法:回顾性分析经内镜检查及血清学检测确诊的3例分别因胃肠道症状伴贫血、胃神经内分泌肿瘤、肝功能异常就诊的合并自身免疫性胃炎患者,总... 详细信息

目的:分析自身免疫性胃炎关联性疾病病例的临床特点,结合文献进行分析总结,以期指导临床实践。方法:回顾性分析经内镜检查及血清学检测确诊的3例分别因胃肠道症状伴贫血、胃神经内分泌肿瘤、肝功能异常就诊的合并自身免疫性胃炎患者,总结自身免疫性胃炎与所伴随疾病间的相关性。结果:病例1以"恶心伴间歇性呕吐伴贫血1个月",入院后血清学检查提示巨幼红细胞性贫血,胃镜检查提示胃体增生,并在胃镜下对其病灶进行切除治疗,术后病理提示为局部高级别瘤变管状腺瘤;病例2以"反复中上腹部不适数月"就诊,入院后行胃镜检查提示胃体增生,在胃镜下对其病灶进行切除,术后病理提示为神经内分泌肿瘤(G1期);病例3以"肝功能异常"就诊,肝穿刺活检明确诊断原发性胆汁性胆管炎。3例患者均行胃镜检查后见胃底胃体黏膜层菲薄,黏膜下血管透见,在胃镜下对胃体增生病灶进行活检,病理提示为慢性萎缩性胃炎,且其血清检测内因子抗体和壁细胞抗体均显示阳性,故诊断为自身免疫性胃炎。综合分析相关文献显示,自身免疫性胃炎与巨幼细胞性贫血、神经内分泌肿瘤、原发性胆汁性胆管炎等疾病的发生、发展相关。结论:本文报道3例分别以巨幼细胞性贫血、胃神经内分泌肿瘤、肝功能异常就诊的病例,就诊中结合其内镜下(表现胃体黏膜萎缩)和血清学标志物检测结果(内因子抗体和壁细胞抗体阳性),诊断为自身免疫性胃炎,从而为疾病的后续诊治提供依据,故临床医师需注重慢性胃炎与之相关联性疾病的筛查,反之亦然,从而避免疾病的漏诊。

关键词：自身免疫性胃炎关联性疾病诊断