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electrochemical deposition of uranium oxide with an electrocatalytically active electrode using double potential step technique

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Chinese Chemical Letters 2022年第8期33卷 3762-3766页

作者： Jie Huang Zhirong Liu Dejuan Huang Tianxiang Jin Yong Qian Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China

The development of effective uranium-removal techniques is of great significance to the environment and human *** this work,a double potential step technique(DPST)was applied to remove U(VI)from uranium-containing wastewater using a carbon felt electrode modified by graphene oxide/phytic acid composite(GO-PA@CF).The application of DPST can inhibit water splitting and prevent GO-PA from adsorbing other interfering ions in *** GO-PA composite can effectively accelerate the electrochemical reduction rate of U(VI),which significantly improved the electrochemical deposition rate of uranium *** a result,the maximum removal efficiency and maximum removal capacity of GOPA@CF electrode reached 98.7%and 1149.3 mg/g,*** removal efficiency remained 97.2%after five cycles of ***,the removal efficiency of GO-PA@CF electrode can reach more than 70%in simulated wastewater.

关键词： electrochemical deposition Uranium Double potential step technique Graphene oxide Nanocomposites

Synthesis of Biomimetic Superhydrophobic Surface through electrochemical deposition on Porous Alumina

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Journal of Bionic Engineering 2011年第2期8卷 122-128页

作者： Jiadao Wang Ang Li Haosheng Chen Darong Chen State Key Laboratory of Tribology Tsinghua University Beijing 100084 P. R. China

The superhydrophobicity of plant leaves is a benefit of the hierarchical structures of their surfaces. These structures have been imitated in the creation of synthetic surfaces. In this paper, a novel process for fabrication of biomimetic hierarchical structures by electrochemical deposition of a metal on porous alumina is described. An aluminum specimen was anodically oxidized to obtain a porous alumina template, which was used as an electrode to fabricate a surface with micro structures through electrochemical deposition of a metal such as nickel and copper after the enlargement of pores. Astonishingly, a hier- archical structure with nanometer pillars and micrometer clusters was synthesized in the pores of the template. The nanometer pillars were determined by the nanometer pores. The lbrmation of micrometer clusters was related to the thin walls of the pores and the crystallization of the metal on a flat surface. From the as-prepared biomimetic surfaces, lotus-leaf-like superhydrophobic surfaces with nickel and copper deposition were achieved.

关键词： porous alumina electrochemical deposition anodization superhydrophobic surface bioinspired hierarchical structure

High performance Cu2O film/ZnO nanowires self-powered photodetector by electrochemical deposition

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Chinese Physics B 2020年第9期29卷 569-573页

作者： Deshuang Guo Wei Li Dengkui Wang Bingheng Meng Dan Fang Zhipeng Wei State Key Laboratory of High Powder Semiconductor Lasers Changchun University of Science and TechnologyChangchun 130022China

Self-powered photodetectors based on nanomaterials have attracted lots of attention for several years due to their various *** this paper,we report a high performance Cu2O/ZnO self-powered photodetector fabricated by using electrochemical *** nanowires arrays grown on indium-tin-oxide glass are immersed in Cu2O film to construct type-Ⅱband *** Cu2O/ZnO photodetector exhibits a responsivity of 0.288 mA/W at 596 nm without *** with Cu2O photoconductive detector,the responsivity of the Cu2O/ZnO self-powered photodetector is enhanced by about two times at 2 V *** is attributed to the high power conversion efficiency and the efficient separation of the photogenerated electron-hole pairs,which are provided by the *** outstanding comprehensive performances make the Cu2O film/ZnO nanowires self-powered photodetector have great potential applications.

关键词： electrochemical deposition Cu2O/ZnO self-powered photodetector responsivity

Fabrication of ZnO nanoparticles-embedded hydrogenated diamond-like carbon films by electrochemical deposition technique

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Chinese Physics B 2013年第5期22卷 568-571页

作者：张培增李瑞山潘效军谢二庆 Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University School of Science Lanzhou University of Science and Technology

ZnO nanoparticles-embedded hydrogenated diamond-like carbon （ZnO-DLC） films have been prepared by electro- chemical deposition in ambient conditions. The morphology, composition, and microstructure of the films have been investigated. The results show that the resultant films are hydrogenated diamond-like carbon films embedded with ZnO nanoparticles in wurtzite structure, and the content and size of the ZnO nanoparticles increase with increasing deposition voltage, which are confirmed by X-ray photoelectron spectroscopy （XPS）, Raman, and transmission electron microscope （TEM）. Furthermore, a possible mechanism used to describe the growth process of ZnO-DLC films by electrochemical deposition is also discussed.

关键词： diamond-like carbon ZnO nanoparticles electrochemical deposition microstructure

Additive-aided electrochemical deposition of bismuth telluride in a basic electrolyte

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International Journal of Minerals,Metallurgy and Materials 2010年第4期17卷 489-493页

作者： Wu-jun Qiu Sheng-nan Zhang Tie-jun Zhu Xin-bing Zhao State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

A new basic electrolyte with two cationic plating additives, polydiaminourea and polyaminosulfone, was investigated for the electrochemical deposition of the bismuth telluride film on a nickel-plated copper foil. Tellurium starts to deposit at a higher potential （-0.35 V） than bismuth （-0.5 V） in this electrolyte. The tellurium-to-bismuth ratio increases while the deposition potential declines from -1 to -1.25 V, indicating a kinetically quicker bismuth deposition at higher potentials. The as-deposited film features good adhesion to the substrate and smooth morphology, and has a nearly amorphous crystal structure disclosed by X-ray diffraction patterns.

关键词： thin films thermoelectric materials electrochemical deposition bismuth telluride basic electrolyte

Thermoelectric properties of Indium doped skutterudite thick film synthesized by a facile technique of electrochemical deposition

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Journal of Materiomics 2023年第5期9卷 899-909页

作者： Nuur Syahidah Sabran Iman Aris Fadzallah Mohd Faizul Mohd Sabri Takahito Ono Department of Mechanical Engineering Faculty of EngineeringUniversiti Malaya50603Kuala LumpurMalaysia Centre for Energy Sciences Universiti Malaya50603Kuala LumpurMalaysia Department of Mechanical System Engineering Graduate School of EngineeringTohoku UniversitySendai980-8579Japan

Doped/filled skutterudites are much studied materials due to their excellent thermoelectric ***,their synthesis and preparation is *** work synthesized indium(In)doped cobalt triantimonide(CoSb_(3))skutterudite thick films using a facile electrochemical deposition technique through chronoamperometric steps for 2 *** nominal composition of In element is found in the range of 0.55e0.23 for a stoichiometric condition of In doped CoSb_(3)thick *** early crystal growth of In doped films shows instantaneous nucleation and is controlled by the charge transfer process with diffusion coefficient,D of 10^(-5)cm^(2)/*** incorporation of In into the interstitial sites of CoSb_(3)cages is evident from the lattice constant(a)expansion as observed in *** optimum Seeback coefficient(S)of the 0.5 mmol In doped CoSb_(3)thick film is89.84 mV/K at 282 K,due to an increase in the carrier concentration(n~10^(20)cm^(-3)).The negative S is due to the electron donor behaviour of the ***,high electrical conductivity,s value(14.26 kS/m)contributes to a power factor(S2s)increment of 115.11 mW/(m$K2).The result shows a promising thermoelectric property of doped skutterudite synthesized by electrochemical deposition technique.

关键词： Indium electrochemical deposition Thermoelectric Thick film Skutterudites

Synthesis of Zinc Oxide Nanostructures on Graphene/Glass Substrate via electrochemical deposition: Effects of Potassium Chloride and Hexamethylenetetramine as Supporting Reagents

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Nano-Micro Letters 2015年第4期7卷 317-324页

作者： Nur Ashikyn Hambali Abdul Manaf Hashim Malaysia-Japan International Institute of Technology Universiti Teknologi Malaysia

The effects of the supporting reagents hexamethylenetetramine(HMTA)and potassium chloride(KCl)mixed in zinc nitrate hexahydrate(Zn(NO3)2 6H2O)on the morphological,structural,and optical properties of the resulting Zn O nanostructures electrodeposited on graphene/glass substrates were *** supporting reagent HMTA does not increase the density of nanorods,but it does remarkably improve the smoothness of the top edge surfaces and the hexagonal shape of the nanorods even at a low temperature of 75°***(OH-)ions from the HMTA suppress the sidewall growth of non-polar planes and promote the growth of Zn O on the polar plane to produce vertically aligned nanorods along the c *** contrast,the highly electronegative chlorine(Cl-)ions from the supporting reagent KCl suppress the growth of Zn O on the polar plane and promote the growth on non-polar planes to produce vertical stacking nanowall *** was found to be able to significantly improve the crystallinity of the grown Zn O structures,as indicated by the observation of much lower FWHM values and a higher intensity ratio of the emission in the UV region to the emission in the visible *** mixtures of Zn(NO3)2 6H2O and the supporting reagents HMTA and KCl seem to provide the optimum ratio of concentrations for the growth of high-density,uniform Zn O *** corresponding transmittances for such molar ranges are approximately 55–58%(HMTA)and 63–70%(KCl),which are acceptable for solar cell and optoelectronic devices.

关键词： Zinc oxide electrochemical deposition Graphene Nanorod Nanowall

Formation and Characterization of Europium Bisphthalocyanine Organic Nanowires by electrochemical deposition

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Chinese Chemical Letters 2004年第11期15卷 1365-1368页

作者： HanBoZHOU HongZhengCHEN LeiCAO YuRONG JinZhiSUN MangWANG DepartmentofPolymerScience＆Engineering StateKeyLabofSiliconMaterialsZhejiangUniversityHangzhou310027

Europium bisphthalocyanine (EuPc2) nanowires were prepared by electrochemical deposition method. Scanning electron microscopy (SEM) images show the evolution of the morphologies of nanowires obtained under different deposition time (Td). The optical properties of europium bisphthalocyanine films were studied by UV-Vis absorption spectra. The morphology of EuPc2 nanowires could be controlled by changing deposition conditions, which provides a useful method to make organic nanowires.

关键词： Europium bisphthalocyanine electrochemical deposition organic nanowires.

electrochemical deposition of Ni-W Gradient Deposit and Its Structural Characterization

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Chinese Journal of Chemical Engineering 2003年第3期11卷 348-351页

作者：王宏智姚素薇张卫国 School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

The Ni-W gradient deposit with nano-structure was prepared by an electrochemical deposition method.X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDXA) indicate that the crystallite size of the deposit decreases from 10.3nm to 1.5nm and the crystal grating aberrance increases with the increase of W content in the growing direction of the deposit. The structure of deposit changes from crystalline to amorphous stepwise with associated increase of crystal grating aberrance, and presents gradient distribution. These show that the deposit isgradient with nano-structure.

关键词： electrochemical deposition Ni-W alloy FGM amorphous