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Efficient photocatalytic biomass-alcohol conversion with simultaneous hydrogen evolution over ultrathin 2D NiS/Ni-CdS photocatalyst

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Chinese Chemical Letters 2024年第7期35卷 422-427页

作者： Zongyi Huang Cheng Guo Quanxing Zheng Hongliang Lu Pengfei Ma Zhengzhong Fang Pengfei Sun xiaodong Yi zhou Chen State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Materials Key Laboratory of High Performance Ceramic Fibers(Xiamen University)Ministry of EducationXiamen UniversityXiamen 361005China Technology Center China Tobacco Fujian Industrial Co.Ltd.Xiamen 361021 China

The photocatalytic conversion of biomass into high-value chemicals,coupled with simultaneous hydrogen(H_(2))evolution,leveraging the electrons and holes generated by solar energy,holds great promise for addressing energy *** this study,we constructed a dual functional photocatalytic system formed by NiS loaded on Ni doped two-dimensional(2D)CdS nanosheet(NiS/Ni-CdSNS)heterostructure for visible-light-driven H_(2)evolution and ethanol oxidation to ***,the 2D NiS/NiCdSNS exhibited significant activity and selectivity in both photocatalytic H_(2)evolution and ethanol oxidation,achieving yields of 7.98 mmol g^(-1)h^(-1)for H_(2)and 7.33 mmol g^(-1)h^(-1)for *** heterogeneous interface of the composite facilitated efficient charge separation,while NiS provided abundant sites for proton reduction,thereby promoting the overall dual-functional photocatalytic *** functional theory calculations further reveal that both Ni doping and NiS loading can reduce the reaction energy barrier of ethanol oxidation of free radicals,and NiS/Ni-CdSNS composite materials exhibit stronger ethanol C-H activation ability to generate key intermediate·CH(OH)CH_(3)on the *** work serves as a valuable guide for the rational design of efficient dual functional photocatalytic systems that combine H_(2)evolution with the selective conversion of organic compounds into high-value chemicals.

关键词： Photocatalysis Biomass-alcohol oxidation H_(2)evolution Dual-functional catalysis

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Pore structure and oxygen content design of amorphous carbon toward a durable anode for potassium/sodium-ion batteries

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Carbon Energy 2024年第9期6卷 184-194页

作者： xiaodong Shi Chuancong zhou Yuxin Gao Jinlin Yang Yu Xie Suyang Feng Jie Zhang Jing Li Xinlong Tian Hui Zhang State Key Laboratory of Marine Resource Utilization in South China Sea School of Marine Science and EngineeringSchool of Chemistry and Chemical EngineeringHainan UniversityHaikouChina School of Materials Science and Engineering Central South UniversityChangshaChina Key Laboratory of Advanced Energy Materials Chemistry Nankai UniversityTianjinChina Hainan Center for Drug and Medical Device Evaluation and Service HaikouChina

Both sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs)are considered as promising candidates in grid-level energy storage ***,the larger ionic radii of K+and Na+induce poor diffusion kinetics and cycling stability of carbon anode *** structure regulation is an ideal strategy to promote the diffusion kinetics and cyclic stability of carbon materials by facilitating electrolyte infiltration,increasing the transport channels,and alleviating the volume ***,traditional pore-forming agent-assisted methods considerably increase the difficulty of synthesis and limit practical applications of porous carbon ***,porous carbon materials(Ca-PC/Na-PC/K-PC)with different pore structures have been prepared with gluconates as the precursors,and the amorphous structure,abundant micropores,and oxygen-doping active sites endow the Ca-PC anode with excellent potassium and sodium storage *** PIBs,the capacitive contribution ratio of Ca-PC is 82%at 5.0 mV s^(-1) due to the introduction of micropores and high oxygen-doping content,while a high reversible capacity of 121.4 mAh g^(-1) can be reached at 5 A g^(-1) after 2000 *** SIBs,stable sodium storage capacity of 101.4 mAh g^(-1) can be achieved at 2 A g^(-1) after 8000 cycles with a very low decay rate of 0.65%for per *** work may provide an avenue for the application of porous carbon materials in the energy storage field.

关键词： oxygen doping pore structure porous carbon potassium-ion batteries sodium-ion batteries

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Controlling the Si/C ratio in SiC matrix based on the modified polymethysilane for C/C-SiC composites with enhanced mechanical properties

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Journal of Advanced Ceramics 2024年第2期13卷 220-236页

作者： Mingdong Liao Xiebo Hu Chenghao Zhong Ping Xu xiaodong Wang Ze Zhang Peng zhou Mingyu Zhang Zhean Su Qizhong Huang National Key Laboratory of Science and Technology on High-Strength Structural Materials Central South UniversityChangsha 410083China

Fabricating SiC matrix with controllable Si/C ratio for C/C-SiC composites via precursor infiltration and pyrolysis is difficult to realize due to the absence of suitable ***,SiC precursors with Si-rich(Si/C=1.23),nearstoichiometric(Si/C=1.01),and C-rich(Si/C=0.88)pyrolyzed ceramics at 1200℃ were successfully synthesized by the novel modification of *** structure and ceramization of synthesized SiC precursors were studied,and C/C-SiC composites with similar Si/C ratio in SiC matrix were also *** results revealed that the defects and Young’s modulus of SiC matrix and the thermal residual stress on pyrolytic carbon coated carbon fiber were determined by the Si/C *** a result,the Si/C ratio exerted significant effects on the crack deflection behavior and the mechanical properties of the *** composites with near-stoichiometric SiC matrix showed excellent mechanical properties because of the effective crack deflection and the moderate Young’s modulus of their SiC *** flexural strength,flexural modulus,and compressive strength were 423±27 MPa,33.41±4.52 GPa,and 393±8 MPa,***,after a heat treatment at 1600℃,the role of carbon fiber toughening was improved and accompanied by a decrease in mechanical properties for all composites,which was attributed to the increased defects in SiC matrix and the damaged interfaces by the thermal residual stress.

关键词： SiC precursor Si/C ratio polymethysilane C/C–SiC composites mechanical properties

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血液透析护理门诊建立需求及意愿调查

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中华实用诊断与治疗杂志 2024年第5期38卷 529-532页

作者：郁姣梁新蕊郭志勇祁滢滢李晶晶周晓冬海军军医大学第一附属医院肾内科上海200433

目的分析维持性血液透析(MHD)患者对护理门诊基础服务、护理技术、健康教育、出诊人员的需求,为建立血液透析护理门诊提供依据。方法采用Kano模型设计问卷,对272例MHD患者进行问卷调查。从基础服务、护理技术、健康教育、出诊人员4个... 详细信息

目的分析维持性血液透析(MHD)患者对护理门诊基础服务、护理技术、健康教育、出诊人员的需求,为建立血液透析护理门诊提供依据。方法采用Kano模型设计问卷,对272例MHD患者进行问卷调查。从基础服务、护理技术、健康教育、出诊人员4个维度33个需求条目分析MHD患者对每个条目的期望属性、必备属性、魅力属性、无差异属性、逆向属性,取频数最大的属性为该条目的Kano属性,计算各需求条目的满意度系数和重要度系数。绘制象限图分析MHD患者对护理门诊服务项目的满意度及重要度。设计问卷调查MHD患者护理门诊就诊意愿和就诊频率,记录愿意就诊、无所谓、不愿意就诊比率,按需就诊、每月就诊1次、2周就诊1次,每周就诊1次、每3个月就诊1次比率。结果共发放调查问卷272份,回收255份,问卷回收率为93.75%。剔除无效问卷,有效问卷243份,问卷有效率为95.29%。33个需求条目中,魅力属性需求条目16个,期望属性需求条目17个,无必备属性、无差异属性、逆向属性条目。所有条目满意度系数均大于重要度系数。满意度及重要度象限图分析结果显示,优势区条目13个,待改进区条目8个,次要改进区条目8个,维持区条目4个。173例(71.19%)患者就诊意愿为非常愿意。97例(39.92%)选择按需就诊,58例(23.87%)选择每月就诊1次。结论 MHD患者对护理门诊的期望度较高,且满意度均大于重要度,期望需求项目主要为护理技术和健康教育指导。

关键词：维持性血液透析 Kano模型护理门诊

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Systemically functional characterization of regiospecific flavonoid O-methyltransferases from Glycine max

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Synthetic and Systems Biotechnology 2024年第2期9卷 340-348页

作者： Bingtong Feng Yuguo Jiang xiaodong Li Yan Wang Ziyu Ren Jian Lu Xing Yan Zhihua zhou Pingping Wang Life Science and Technology College Guangxi UniversityNanningGuangxi530004China CAS-Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai200032China University of Chinese Academy of Sciences Beijing100049China The College of Life Sciences Shanghai Normal UniversityShanghai200234China

Plants produce diverse flavonoids for defense and stress resistance,most of which have health benefits and are widely used as food additives and *** of the free hydroxyl groups of flavonoids,catalyzed by S-adenosyl-l-methionine-dependent O-methyltransferases(OMTs),significantly affects their physicochemical properties and ***(Glycine max)contain a rich pool of O-methylated ***,the OMTs responsible for flavonoid methylation in *** remain largely *** screened the *** genome and obtained 22 putative OMT-encoding genes that share a broad spectrum of amino acid identities(25–96%);among them,19 OMTs were successfully cloned and heterologously expressed in Escherichia *** used the flavonoids containing the free 3,5,7,8,3′,4′hydroxyl group,such as flavones(luteolin and 7,8-dihydroxyflavone),flavonols(kaempferol and quercetin),flavanones(naringenin and eriodictyol),isoflavonoids(daidzein and glycetein),and caffeic acid as substrates,and 15 OMTs were proven to catalyze at least one *** methylation activities of these GmOMTs covered the 3,7,8,3′,4′-hydroxyl of flavonoids and 7,4′-hydroxyl of *** systematic characterization of *** flavonoid OMTs provides insights into the biosynthesis of methylated flavonoids in soybeans and OMT bioparts for the production of methylated flavonoids via synthetic biology.

关键词： Flavonoids O-methyltransferases Glycine max Functional characterization

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Hierarchical Fe_(x)Bi_(2−x)S_(3) solid solutions for boosted supercapacitor performance

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Nano Research 2024年第5期17卷 3997-4005页

作者： Fengming zhou xiaodong Wang Ruijie Jing Xiaoyu Li Qi Zhang Zhenjiang Li Yunmei Du Zhenyu Xiao Lei Wang International Cooperation United Laboratory of Eco-chemical Engineering and Green Manufacturing College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Technology Innovation Center of Battery Safety and Energy Storage Technology QingdaoInternational Science and Technology Cooperation Base of QingdaoCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

For the pursuit of high energy supercapacitors,the development of high performance pseudocapacitance or battery-type negative electrode material is urgently needed to make up for the capacity shortage of commercial electric double layer capacitor(EDLC)type ***,a porous and defect-rich Fe_(x)Bi_(2-x)S_(3) solid solution structure is firstly constructed by employing Fe-doped Bi_(2)O_(2)CO_(3) porous nanosheets as a precursor,which presents dramatically increased energy storage performance than Bi_(2)S_(3) and FeS_(2) *** the optimized Fe_(x)Bi_(2-x)S_(3) solid solution(FeBiS-60%),the Fe solute is free and random dispersed in Bi_(2)S_(3) framework,which can effectively modulate the electronic structure of Bi element and introduce rich-defect due to the existence of Fe(II).Meanwhile,the FeBiS-60%,constructed by pore nanosheets that are assembled by self-supported basic nanorod units,presents rich mesoporous channels for fast mass transfer and abundant active sites for promoting capacity ***,a high capacitance of 832.8 F·g^(-1) at a current density of 1 A·g^(-1) is achieved by the FeBiS-60%***,a fabricated Ni3S_(2)@Co_(3)S_(4)(NCS)//FeBiS-60%hybrid supercapacitor device delivers an outstanding energy density of 85.33 Wh·kg^(-1) at the power density of 0.799 kW·kg^(-1),and ultra-long lifespan of remaining 86.7%initial capacitance after 8700 cycles.

关键词： supercapacitor solid solutions defect structure hierarchical structure Bi_(2)S_(3)

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Ti^+离子注入结合热退火法制备TiO_2纳米薄膜研究

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原子核物理评论 2015年第2期32卷 242-248页

作者：周小东周口师范学院物理与机电工程学院河南周口466001

利用金属蒸发真空多弧离子源(MEVVA源)注入机将Ti+离子注入到高纯石英玻璃衬底中,离子注入的加速电压为20 k V,注入剂量为1.5×1017和3×1017ions/cm2,将注入样品在氧气气氛下进行热退火处理,制备了TiO2纳米薄膜。采用光吸收谱、拉曼光... 详细信息

利用金属蒸发真空多弧离子源(MEVVA源)注入机将Ti+离子注入到高纯石英玻璃衬底中,离子注入的加速电压为20 k V,注入剂量为1.5×1017和3×1017ions/cm2,将注入样品在氧气气氛下进行热退火处理,制备了TiO2纳米薄膜。采用光吸收谱、拉曼光谱、X射线光电子能谱、扫描电子显微镜和透射电子显微镜对注入样品进行了测试和表征,分析了TiO2薄膜的形成机理。在热退火过程中衬底中离子注入的Ti原子向外扩散到衬底表面被氧化形成了TiO2。TiO2的形成、晶粒尺寸和晶体结构依赖于热退火温度,而形成TiO2薄膜的厚度主要受离子注入剂量和热退火时间的影响。实验结果表明,该方法制备的TiO2纳米薄膜将有望应用于制备具有光催化、自清洁等特殊性能的自清洁玻璃。

关键词：离子注入热退火 TiO2

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Occurrence and risk assessment of azole fungicides during the urban water cycle:A year-long study along the Yangtze River,China

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Journal of Environmental Sciences 2024年第7期141卷 16-25页

作者： Yangyang Zhang Xinjie Gu Xiuwen Li Qiuyun Zhao xiaodong Hu Rui Huang Jixiong Xu Zilong Yin Qing zhou Aimin Li Peng Shi State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Province Hydraulic Research Institute Nanjing 210023China

Azole fungicides(AFs)play an important role in the prevention and treatment of fungal diseases in agricultural ***,limited studies are addressing the fate and ecological risk of AFs in the urban water cycle at a large watershed *** address this gap,we investigated the spatiotemporal distribution and ecological risk of twenty AFs in the lower reaches of the Yangtze River across four ***(CBA),tebuconazole(TBA),tricyclazole(TCA),and propiconazole(PPA)were found to be the dominant *** highest concentrations were measured in January(188.3 ng/L),and November(2197.1 ng/L),July(162.0 ng/L),and November(1801.9 ng/L),*** comparison between wastewater treatment plants(WWTPs)effluents and surface water suggested that industrial WWTPs are major sources of AFs in the Yangtze *** particular,TBA and PPA were found to be the most recalcitrant AFs in industrial WWTPs,while difenoconazole(DFA)was found to be the most potent pollutant in municipal WWTPs,with an average removal rate of less than60%.The average risk quotient(RQ)for the entire AFs was 6.45 in the fall,which was higher than in January(0.98),April(0.61),and July(0.40).This indicates that AFs in surface water posed higher environmental risks during the dry ***,the exposure risk of AFs via drinking water for sensitive populations deserves more *** study provides benchmark data on the occurrence of AFs in the lower reaches of the Yangtze River,and offers suggestions for better reduction of AFs.

关键词： Azole fungicides Spatiotemporal distribution Ecological risk Urban water cycle the Yangtze River

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The accessible seismological dataset of a high-density 2D seismic array along Anninghe fault

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Earthquake Science 2024年第1期37卷 67-77页

作者： Weifan Lu Zeyan Zhao Han Yue Shiyong zhou Jianping Wu xiaodong Song School of Earth and Space Sciences Peking UniversityBeijing 100871China Institute of Geophysics China Earthquake AdministrationBeijing 100081China

The scientific goal of the Anninghe seismic array is to investigate the detailed geometry of the Anninghe fault and the velocity structure of the fault *** 2D seismic array is composed of 161 stations forming sub-rectangular geometry along the Anninghe fault,which covers 50 km and 150 km in the fault normal and strike directions,respectively,with~5 km *** data were collected between June 2020 and June 2021,with some level of temporal *** types of instruments,***-05A and SmartSolo,are used in this *** quality and examples of seismograms are provided in this *** the data protection period ends(expected in June 2024),researchers can request a dataset from the National Earthquake Science Data Center.

关键词： Anninghe fault seismological dataset data share

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Design of Remote Hydraulic Teaching System

Design of Remote Hydraulic Teaching System

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第三届材料科学应用与能源材料国际研讨会

作者： xiaodong zhou Keli Xing Lisheng Yin Shanghai University

In this paper, a set of remote hydraulic teaching experiment system is designed and developed based on the demand of teaching experiment of hydraulic related courses in colleges and universities, which can enable teachers or students to conduct experiment operation on the field hydraulic testing platform at the remote client, so as to facilitate teachers and students to carry out hydraulic teaching experiment and research. The main contents of this paper are as follows: according to the requirements of hydraulic servo control system related to the teaching experiment, the experimental project of remote hydraulic teaching experiment system is determined. Through the analysis and comparison of C/S and B/S software system architectures, the remote monitoring scheme based on B/S mode is determined. Completed the design of the hydraulic circuit of the hydraulic test bench, developed the field measurement and control system based on LabVIEW, and built the remote monitoring system based on B/S mode. The development of the remote hydraulic teaching experiment system was completed. The input signal response experiment and load characteristic experiment of the valve-controlled motor electro-hydraulic speed servo control system were carried out on the remote client to the field hydraulic experiment platform, and the experimental results were analyzed. The experimental process and results have reached the expected target and meet the demand of remote hydraulic experiment.

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