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您的检索式：作者名="JAFARIAN Majid"
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| 1 | 碱性介质中(氢)氧化铜修饰电极电催化氧化蔗糖(英文)显示文摘A stable copper(hydr)oxide-modified electrode was prepared in 0.5 mol/L NaOH solution by cyclic voltammetry in the range of -250 to 1 000 mV.It can be used for electrochemical studies in the range of -250 to 1000 mV without interfering peaks because there is no oxidation of copper.During an anodic potential sweep,the electro-oxidation of saccharose on Cu occurred by the formation of CuⅢ and this reaction also occurred in the early stages of the reversed cycle until it is stopped by the negative potentials.A mechanism based on the electro-chemical generation of CuⅢ active sites and their subsequent consumption by saccharose was proposed,and the rate law and kinetic parameters were obtained.The charge transfer resistance from theoretical and impedance studies was used to verify the mechanism.Under chronoamperometry regimes,the reaction followed Cottrellian behavior.The transfer of up to 21 electrons was observed in further investigations of the electro-oxidation of saccharose on a(hydr)oxide Cu rotating disk electrode. | Majid JAFARIAN Mehdi RASHVAND AVEI Iman DANAEE Fereydoon GOBAL Mohammad G.MAHJANI | 2010 | 催化学报2010，31，11： | 1 |
| 2 | NaOH溶液中Ni基石墨修饰电极上甲醇电氧化过程中钴与铜的协同效应(英文)显示文摘在NaOH溶液(0.1 mol/L)中考察了Ni,Co和Cu二元和三元合金修饰的石墨电极上甲醇电氧化反应性能.采用循环伏安法、计时电流法和电化学阻抗谱(EIS)等技术研究了修饰电极的催化活性和协同效应.这些催化剂在含有Ni,Cu和Co离子溶液的阴极电位上反复浸渍石墨电极制得.结果表明,在甲醇存在下,Ni基三元合金修饰电极(G/NiCuCo)对甲醇氧化反应的响应值明显高于其它样品.阳极峰值电流与扫描速率的平方根呈线性关系,表明该过程受扩散控制.在CA区域,该反应遵循Cottrellin特性,甲醇扩散系数为6.25×10–6 cm2/s.甲醇氧化反应速率常数为40×107 cm3/(mol·s).另外,采用EIS研究了修饰电极表面上甲醇催化氧化反应. | Tayebe Rostami Majid Jafarian Somaieh Miandari Mohammad G.Mahjani Fereydoon Gobal | 2015 | Chinese Journal of Catalysis2015，36，11： | 1 |
| 3 | Electrochemical Impedance of Ethanol Oxidation in Alkaline Media显示文摘Nickel modified NiOOH electrodes were used for the electrocatalytic oxidation of ethanol in alkaline so lutions. The electro-oxidation of ethanol in a 1 mol/L NaOH solution at different concentrations of ethanol was stu died by ac impedance spectroscopy. Electrooxidation of ethanol on Ni shows negative resistance on impedance plots. The impedance shows different patterns at different applied anodic potential. The influence of the electrode potential on impedance was studied and a quantitative explanation for the impedance of ethanol oxidation was given by means of a proposed mathematical model. At potentials higher than 0.52 V(vs. Ag/AgCl), a pseudoinductive behavior was observed, but at those higher than 0.57 V, impedance patterns were reversed to the second and third quadrants. The conditions required for the reversing of impedance pattern were delineated with the impedance model. | DANAEE Iman JAFARIAN Majid GOBAL Fereydoon SHARAFI Mahboobeh MAHJANI Mohammad-ghasem | 2012 | Chemical Research in Chinese Universities2012，28，1： | 1 |
| 4 | On Finite Groups Whose Nilpotentisers Are Nilpotent Subgroups显示文摘Let G be a finite group and x∈G.The nilpotentiser of x in G is defined to be the subset Nil_(G)(x)={y∈G:is nil potent}.G is called an N-group(n-group)if Nil_(G)(x)is a subgroup(nilpotent subgroup)of G for all x∈G\Z^(∗)(G)where Z^(∗)(G)is the hypercenter of G.In the present paper,we determine finite N-groups in which the centraliser of each noncentral element is abelian.Also we classify all finite n-groups. | Seyyed Majid Jafarian Amiri Hojjat Rostami | 2017 | Journal of Mathematical Study2017，50，4： | 0 |
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