甲醇
电催化剂
石墨烯
电化学
氧化物
玻璃碳
材料科学
纳米复合材料
铂金
法拉第效率
化学工程
无机化学
电极
化学
催化作用
纳米技术
循环伏安法
有机化学
物理化学
工程类
冶金
作者
Reyhaneh Fazel Zarandi,Behzad Rezaei,Hassan S. Ghaziaskar,Ali A. Ensafi
标识
DOI:10.1016/j.ijhydene.2019.09.237
摘要
The electrochemical reduction of CO2 to value-added products is one of the useful approaches to reducing the effects of global climate change. Herein, a novel electrocatalyst consisting of platinum nanoparticles on histamine-reduced graphene oxide plates ([email protected]) supported by a glassy carbon (GC) substrate for the electrochemical conversion of CO2 to methanol has been developed. The nanocomposite was optimized in terms of pH, applied potential, CO2 purging time and platinum loading for the highest current densities and faradaic efficiencies toward methanol production. The best results were obtained in a solution containing KNO3 0.1 mol L−1 at the pH of 2.0, the applied potential of −0.3 V vs Ag/AgCl (KClsat), CO2 purging duration of 30 min and Pt loading of 5.17 × 10−7 mol cm−2. The faradaic efficiency of 37% was obtained for methanol production. The prepared nanocomposite requires a lower applied potential and serves as an intermediate stabilizer through the production of methanol.
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