私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
當前位置:> 首頁 > 論文著作 > 正文
Methanol electrocatalytic oxidation on highly dispersed platinum–ruthenium/graphene catalysts prepared in supercritical carbon dioxide–methanol solution
作者:Jian Zhao Lin Zhang Hao Xue Zhaobo Wang and Haiqing Hu
關鍵字:graphene, supercritical carbon dioxide,PtRu
論文來源:期刊
發表時間:2012年
An effective, simple, low temperature and environmentally benign supercritical fluid (SCF) route is presented for preparing graphene-supported metal nanoparticles. With the assistance of supercritical carbon dioxide (SC CO2), ultrafine PtRu nanoparticles with an average size of 2.87 nm were very uniformly distributed on the surfaces of functionalized graphene sheets (FGSs) by the reduction of a mixture of H2 PtCl6 and RuCl3precursors. The catalytic property of the as-prepared composites for methanol oxidation was investigated by cyclic voltammetry and chronoamperometry. In comparison with their carbon black (Vulcan XC-72) counterparts, the PtRu/FGSs composites showed considerably improved catalytic activity and stability for methanol oxidation. The high surface area of graphene and even distribution of ultrafine bimetallic particles are vital for the superior electrocatalytic performance of the PtRu/FGSs composites. The findings suggest that highly efficient graphene-supported metallic electrocatalysts can be fabricated by the supercritical fluid method and graphene as a favorable electrocatalytic carrier, which has promising potential application in direct methanol fuel cells.
主站蜘蛛池模板: 和平区| 汉寿县| 新巴尔虎左旗| 连平县| 吉木萨尔县| 盐源县| 深水埗区| 多伦县| 根河市| 嘉善县| 封丘县| 巴马| 三江| 西藏| 广河县| 桃园县| 剑川县| 嵩明县| 浏阳市| 郑州市| 溧水县| 观塘区| 肇庆市| 新密市| 镇赉县| 南皮县| 伊宁县| 陆丰市| 赤峰市| 温宿县| 达州市| 崇仁县| 大宁县| 疏勒县| 高密市| 托克托县| 宁南县| 额济纳旗| 衡阳县| 本溪| 绥芬河市|