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Journal of Environmental Sciences 2023年第2期124卷 617-629页

作者： Fuyou Du zhan lai Huiyang Tang Haiyan Wang Chenxi Zhao College of Biological and Environmental Engineering Changsha UniversityChangsha 410022China

In this work,a novel dual Z-scheme Bi_(2)WO_(6)/g-C_(3)N_(4)/black phosphorus quantum dots(Bi_(2)WO_(6)/g-C_(3)N_(4)/BPQDs)composites were fabricated and utilized towards photocatalytic degradation of bisphenol A(BPA)under visible-light *** the content of g-C_(3)N_(4) and BPQDs in Bi_(2)WO_(6)/g-C_(3)N_(4)/BPQDs composites to a suitable mass ratio can enhance the visible-light harvesting capacity and increase the charge separation efficiency and the transfer rate of excited-state electrons and holes,resulting in much higher photocatalytic activity for BPA degradation(95.6%,at 20 mg/L in 120 min)than that of Bi2WO6(63.7%),g-C_(3)N_(4)(25.0%),BPQDs(8.5%),and Bi_(2)WO_(6)/g-C_(3)N_(4)(79.6%),*** trapping experiments indicated that photogenerated holes(h+)and superoxide radicals(•O_(2)−)played crucial roles in photocatalytic BPA ***,the possible degradation pathway and photocatalytic mechanism was proposed by analyzing the BPA *** also demonstrated that the Bi2WO6/g-C_(3)N_(4)/BPQDs as effective photocatalystswas stable and have promising potential to remove environmental contaminants from real water samples.

关键词： Dual Z-scheme Bi_(2)WO_(6) Graphitic carbon nitride(g-C_(3)N_(4)) Black phosphorus quantum dots (BPQDs) Bisphenol A(BPA)

Regulate electric double layer for one-step synthesize and modulate the morphology of(oxy)hydroxides

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Nano Research 2024年第5期17卷 3675-3683页

作者： Jiaxin Liu Yue Shi Yanli Gu Zheng Lv Liang Zhao Yu Yang Tianrong zhan Jianping lai Lei Wang State Key Laboratory Base of Eco-Chemical Engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

FeOOH have received considerable attention due to their natural abundance and *** the significant progress achieved,the one-step synthesis of integrated FeOOH is still a major ***,the current research on FeOOH catalyst still suffers from the unclear mechanism of controlling ***,density functional theory(DFT)calculations and X-ray photoelectron spectroscopy(XPS)demonstrated the strong electron-capturing and hydrogen absorption ability of Co in FeOOH,which further promotes the formation and stabilization of *** used a one-step electrodeposition method to synthesize Co introduced FeOOH integrated electrocatalyst and propose to introduce ions with different valence states to regulate the morphology of FeOOH by precise modulation of electric double layer(EDL)composition and *** prepared Co-FeOOH-K^(+)has a larger electrochemically active surface area(ECSA)(325 cm^(2))and turnover frequency(TOF)value(0.75 s^(-1)).In the electrochemical experiments of an alkaline anion exchange membrane electrolyzer,Co-FeOOH-K^(+)shows better oxygen evolution performance than commercial RuO_(2) under industrial production conditions and has good industrial application prospects.

关键词： integrated(oxy)hydroxides electrodeposition electric double layer(EDL) oxygen evolution reaction(OER) morphology regulation

Continuous-flow electrosynthesis of urea and oxalic acid by CO_(2)-nitrate reduction and glycerol oxidation

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Chinese Journal of Catalysis 2024年第8期63卷 270-281页

作者： Shuanglong Zhou Yue Shi Yu Dai Tianrong zhan Jianping lai Lei Wang Key Laboratory of Eco-Chemical Engineering Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life ScienceTaishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and TechnologyCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina

Urea and oxalic acid are critical component in various chemical manufacturing ***,achieving simultaneous generation of urea and oxalic acid in a continuous-flow electrolyzer is a ***,we report a continuous-flow electrolyzer equipped with 9-square centime-ter-effective area gas diffusion electrodes(GDE)which can simultaneously catalyze the glycerol oxidation reaction in the anode region and the reduction reaction of CO_(2)and nitrate in the cathode region,producing oxalic acid and urea at both the anode and cathode,*** current density at low cell voltage(0.9 V)remained above 18.7 mA cm^(-2)for 10 consecutive electrolysis cycles(120 h in total),and the Faraday efficiency of oxalic acid(67.1%)and urea(70.9%)did not *** and theoretical studies show that in terms of the formation of C-N bond at the cathode,Pd-sites can provide protons for the hydrogenation process of CO_(2)and NO3-,Cu-sites can promote the generation of*COOH and Bi-sites can stabilize**** addition,in terms of glycerol oxidation,the introduction of Cu and Bi into Pd metallene promotes the oxidation of hydroxyl groups and the cleavage of C-C bond in glycerol molecules,respectively.

关键词： Urea Oxalic acid CO_(2) C-N bond Metallene

Dissolved organic matter accelerates microbial degradation of 17 alpha-ethinylestradiol in the presence of iron mineral

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Journal of Environmental Sciences 2024年第5期139卷 364-376页

作者： Huan He Min Shi Xiaoxia Yang Juhong zhan Yanting Lin Ziwei Guo Zhicheng Liao Chaochao lai Xiaomin Ren Bin Huang Xuejun Pan Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control Kunming 650500China Research Institute for Environmental Innovation(Suzhou)Tsinghua Suzhou 215163China

Dissolved organic matter(DOM)and iron minerals widely existing in the natural aquatic environment can mediate the migration and transformation of organic ***,the mechanism of interaction between DOM and iron minerals in the microbial degradation of pollutants deserves further *** this study,the mechanism of 17 alphaethinylestradiol(EE2)biodegradation mediated by humic acid(HA)and three kinds of iron minerals(goethite,magnetite,and pyrite)was *** results found that HA and iron minerals significantly accelerated the biodegradation process of EE2,and the highest degradation efficiency of EE2(48%)was observed in the HA-mediated microbial system with pyrite under aerobic ***,it had been demonstrated that hydroxyl radicals(HO·)was the main active substance responsible for the microbial degradation of ***·is primarily generated through the reaction between hydrogen peroxide secreted by microorganisms and Fe(II),with aerobic conditions being more *** presence of iron minerals and HA could change the microbial communities in the EE2 biodegradation *** findings provide new information for exploring the migration and transformation of pollutants by microorganisms in iron-rich environments.

关键词： Dissolved organic matter Iron mineral 17 alpha-ethinylestradiol Biodegradation

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海桐皮的本草考证

中国中药杂志 2020年第19期45卷 4798-4804页

作者：孟武威詹志来中国中医科学院中药资源中心北京100700 亳州市京皖中药饮片厂安徽亳州236800

历代本草关于海桐皮的植物来源记载较多,且描述较简,加之各地习用品较多,导致海桐皮商品较为混乱,有必要开展深入的本草考证,正本清源,规范海桐皮用药。该文对历代本草所记载的海桐皮,按照植物的形态特征、产地、生境、药图、功效进行... 详细信息

历代本草关于海桐皮的植物来源记载较多,且描述较简,加之各地习用品较多,导致海桐皮商品较为混乱,有必要开展深入的本草考证,正本清源,规范海桐皮用药。该文对历代本草所记载的海桐皮,按照植物的形态特征、产地、生境、药图、功效进行详细考证分析,得出历代本草中所载的正品海桐皮应为木棉科木棉Bombax malabaricum的干燥树皮,即为现广东省地方标准所收载并至今沿用的广海桐皮。而《中国药典》1977年版所收载的豆科刺桐Erythrina varlegata ***.或乔木刺桐***的干燥树皮在古代应为刺桐。该文通过对海桐皮历代基原变迁、产地变迁、品质评价进行了系统详细总结,为海桐皮的正确用药和资源的进一步开发利用提供依据。

关键词：海桐皮本草考证基原品质评价

高阶Dirichlet型积分的计算和统一表达式

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数学的实践与认识 2016年第13期46卷 272-277页

作者：赖展翅咸阳职业技术学院基础部陕西咸阳712000

Dirichlet积分在物理学和信号处理领域有着重要的应用.采用复分析的方法对高阶Dirichlet型积分进行了求解和计算,证明了一般情况下统一的数学表达式.

关键词： Dirichlet积分高阶复分析方法广义积分

Preparation of Fe-As alloys by mechanical alloying and vacuum hot-pressed sintering:microstructure evolution,mechanical properties,and mechanisms

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Rare Metals 2024年第8期43卷 3876-3892页

作者： Fei Chai Fei-Ping Zhao zhan Hu Shi-Yi Wen Ben-Hammouda Samia Ze-Lin Fu Xin-Ting lai Yan-Jie Liang Xiao-Bo Min Li-Yuan Chai School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Institute of Environmental EngineeringCentral South UniversityChangsha 410083HunanChin State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Department of Building Civiland Environmental EngineeringConcordia UniversityMontreal H3G 1M8Canada

Arsenic materials have attracted great attention due to their unique ***,research concerning iron-arsenic(Fe-As) alloys is very scarce due to the volatility of As at low temperature and the high melting point of ***,a new Fe-As alloy was obtained by mechanical alloying(MA) followed by vacuum hot-pressed sintering(VHPS).Moreover,a systematic study was carried out on the microstructural evolution,phase composition,leaching toxicity of As,and physical and mechanical properties of Fe-As alloys with varying weight fractions of As(20%,25%,30%,35%,45%,55%,65%,and 75%).The results showed that pre-alloyed metallic powders(PAMPs) have a fine grain size and specific supersaturated solid solution after MA,which could effectively improve the mechanical properties of Fe-As alloys by VHPS.A high density(> 7.350 g·cm^(-3)),low toxicity,and excellent mechanical properties could be obtained for FeAs alloys sintered via VHPS by adding an appropriate amount of As,which is more valuable than commercial Fe-As *** Fe-25% As alloy with low toxicity and a relatively high density(7.635 g·cm^(-3)) provides an ultra-high compressive strength(1989.19 MPa),while the Fe-65% As alloy owns the maximum Vickers hardness(HVo.5 899.41).After leaching by the toxicity characteristic leaching procedure(TCLP),these alloys could still maintain good mechanical performance,and the strengthening mechanisms of Fe-As alloys before and after leaching were *** in the grain size,micro structure,and phase distribution induced significant differences in the compressive strength and hardness.

关键词： Mechanical alloying Vacuum hot-pressed sintering High-pressure Arsenic-iron alloys Mechanical properties

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客运专线无砟轨道施工关键技术与经济分析

铁道工程学报 2007年第S1期24卷 174-177页

作者：张洪丁占来中铁六局集团石家庄铁建公司石家庄050001 石家庄铁道学院石家庄050043

研究目的:本文旨在对客运专线无砟轨道的结构形式、施工关键技术以及造价有更深入的了解,以满足高标准严要求建设高速客运专线的需要。研究结果:对客运专线无砟轨道的结构形式、技术特点及施工关键技术进行了介绍,对各国无砟轨道与有砟... 详细信息

研究目的:本文旨在对客运专线无砟轨道的结构形式、施工关键技术以及造价有更深入的了解,以满足高标准严要求建设高速客运专线的需要。研究结果:对客运专线无砟轨道的结构形式、技术特点及施工关键技术进行了介绍,对各国无砟轨道与有砟轨道的工程费用进行了对比,结合我国客运专线实例对工程造价进行了简要经济分析。

关键词：客运专线无砟轨道施工技术经济分析

Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes

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Rare Metals 2024年第8期43卷 3735-3747页

作者： Xiang-Xin zhang Yuan-Qiang Chen Chang-Xin Lin Yuan-Sheng Lin Guo-Lin Hu Yong-Chuan Liu Xi-lai Xue Su-Jing Chen zhan-Lin Yang Bai-Sheng Sa Yi-Ning zhang Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Helmholtz Institute Ulm(HIU) 89081 UlmGermany Karlsruhe Institute of Technology(KIT) 76021 KarlsruheGermany College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China

Metallic zinc is an excellent anode material for Zn-ion batteries,but the growth of Zn dendrite severely hinders its practical ***,an efficient and economical cationic additive,poly dimethyl diallyl ammonium(PDDA) was reported,used in aqueous Zn-ion batteries electrolyte for stabilizing Zn *** growth of zinc dendrites can be significantly restrained by benefiting from the pronounced electrostatic shielding effect from PDDA on the Zn metal ***,the PDDA is preferentially absorbed on Zn(002) plane,thus preventing unwanted side reactions on Zn *** to the introduction of a certain amount of PDDA additive into the common ZnSO_(4)-based electrolyte,the cycle life of assembled Zn‖Zn cells(1 mA·cm^(-2) and 1 mAh·cm^(-2)) is prolonged to more than 1100 *** response to the perforation issue of Zn electrodes caused by PDDA additives,the problem can be solved by combining foamy copper with zinc *** real application,Zn-ion hybrid supercapacitors and MnO_(2)‖Zn cells were assembled,which exhibited excellent cycling stability with PDDA *** work provides a new solution and perspective to cope with the dendrite growth problem of Zn anode.

关键词： PDDA Electrostatic shielding effect Zn anode Zn dendrites

SnO_2纳米颗粒气体传感器在CO_2气体检测中的应用

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传感器与微系统 2007年第12期26卷 114-116页

作者：王凌英丁占来石家庄铁道学院材料科学与工程分院河北石家庄050043

将有机金属先驱体[Sn(N(CH3)2)2]2在适当的条件下热解,制备了尺寸分布集中的SnO2纳米颗粒。然后,在气体传感器的多晶硅层上原位沉积纳米颗粒悬浮液得到纳米颗粒多孔薄膜传感层,并探索了SnO2纳米颗粒传感器原位掺杂Mg,K,Ba元素,检测气体... 详细信息

将有机金属先驱体[Sn(N(CH3)2)2]2在适当的条件下热解,制备了尺寸分布集中的SnO2纳米颗粒。然后,在气体传感器的多晶硅层上原位沉积纳米颗粒悬浮液得到纳米颗粒多孔薄膜传感层,并探索了SnO2纳米颗粒传感器原位掺杂Mg,K,Ba元素,检测气体传感器在不同CO2体积分数下的敏感性。结果表明:此方法制得的传感器对CO2气体敏感性不佳,尚需进一步研究掺杂元素和掺杂工艺。

关键词： SnO2纳米颗粒气体传感器滴液沉积法 CO2气体敏感性