材料科学与工程学报2017，Vol.35Issue(2)：215-218,236,5.DOI:10.14136/j.cnki.issn 1673-2812.2017.02.009
单分散氧化铅掺杂稻壳活性炭的制备及析氢行为
Preparation and Hydrogen Evolution Behavior of Lead-doped Activated Carbon from Rice Husk
摘要
Abstract
Rice husk-based activated carbon doped with lead (PRC) was prepared by combination of impregnation and calcination method.The rice husk activated carbon (ARC) was obtained beforehand through ZnCl2-activation.The porosity of ARC and PRC was characterized by nitrogen adsorption-desorption isotherms at 77K.The monodispersed nano-PbO particles with an average size of 15 nm were identified by XRD and TEM measurements.The amount of lead oxide in PRC surface was approximately 14wt％ based on EDS element analysis.It was found that the specific surface area of ARC decreased from 988rn2/g to 732m2/g when it was doped with lead.The behavior of hydrogen evolution in aqueous sulphric acid solution of PRC was studied by the method of linear scanning voltammetry and logarithmic response of steady state polarization curves analysis.The results show that the value "a" in the Tafel equation of PRC electrode corresponding to hydrogen evolution increased by 18％ and the value of exchange current density "j0" decreased by 7 times.It is testified that the effect of hydrogen evolution inhibition of PRC is significant.关键词
氧化铅/稻壳活性炭/掺杂/析氢/过电位Key words
Lead oxide/rice husk/doping/Hydrogen evolution/overpotential分类
化学化工引用本文复制引用
吴翠,吴小兰,高云芳,郑德洲,娄建秋..单分散氧化铅掺杂稻壳活性炭的制备及析氢行为[J].材料科学与工程学报,2017,35(2):215-218,236,5.基金项目
国家科技支撑计划课题资助项目(2014BAC03B03) （2014BAC03B03）
