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使用多孔阳极氧化铝模板, 电沉积制备了Ni-Mo合金纳米线. 用扫描电镜(SEM)和表面能谱(XPS)表征沉积物形貌和组成, 用伏安法研究了Ni-Mo合金纳米线的沉积条件及催化性能. 结果表明, Ni-Mo合金纳米线的直径在20~30 nm之间. Ni-Mo共沉积的伏安图上在-1.4 V(vs Ag/AgCl)左右出现一个扩散电流平台. 光电子能谱(XPS)表明, Ni-Mo合金纳米线的共沉积电位出现在-1.4 V以后, 大于这个电位钼以低价氧化物存在. Mo-Ni离子浓度比大于2时扩散电流平台消失. 柠檬酸盐浓度达到2~3倍镍盐浓度时, 扩散电流平台趋于稳定. 在较优条件下电沉积的Ni-Mo合金纳米线显示较高的析氢催化活性.

参考文献

[1] Brewer L .Bonding and structures of transition metals[J].Science,1968,161:115.
[2] 马洁,刘顺诚,江琳才,蒋雄.纳米晶Ni-Mo合金复合镀层中钼含量对析氢反应的影响[J].化学学报,1997(04):363-369.
[3] Brown D E;Mahmood M N;Man M C M .Preparation and characterization of low overvoltage transition metal alloy electrocatalysts for hydrogen evolution in alkaline solutions[J].Electrochimica Acta,1984,29(11):1551.
[4] Sanches L S;Domingues S H;Marinc E B .Characterization of electrochemically deposited Ni-Mo alloy coatings[J].Electrochemistry Communications,2004,6:543.
[5] Marlot A;Kern P;Landolt D .Pulse plating of Ni-Mo alloys from Ni-rich electrolytes[J].Electrochimica Acta,2002,48:29.
[6] Podlaha EJ.;Landolt D. .INDUCED CODEPOSITION .3. MOLYBDENUM ALLOYS WITH NICKEL, COBALT, AND IRON[J].Journal of the Electrochemical Society,1997(5):1672-1680.
[7] 杨静,吴仲达.镍钼合金电极的析氢性能研究[J].稀有金属,1998(04):251-253.
[8] Chen L L;Andszei L .Hydrogen evolution reaction on nickel-molybdenum powder electrodes[J].Journal of the Electrochemical Society,1992,139:3458.
[9] Huot J Y;Trudeau M L;Schulz R .Low hydrogen overpotential nanocrystalline Ni-mocathodes for alkaline water electrolysis[J].J Eleectrochem Soc,1991,138(05):1316.
[10] Shingubara S .Fabrication of nanomaterials using porous alumina templates[J].J Nanoparticle Research,2003,5:17.
[11] Thompson GE. .POROUS ANODIC ALUMINA - FABRICATION, CHARACTERIZATION AND APPLICATIONS[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1997(1/2):192-201.
[12] Kuznetsov VV;Pavlov MR;Chepeleva SA;Kudryavtsev VN .Effect of concentration of ammonia and citrate ions on the kinetics of cathodic reactions during electrodeposition of a nickel-molybdenum alloy[J].Russian journal of electrochemistry,2005(1):75-81.
[13] 黄令;许书楷;周绍明;董浚修 .纳米晶镍-钼合金电沉积层的结构与性能[J].应用化学,1999,16(02):38.
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