摘要
采用改进的Hummers法合成氧化石墨烯,以壳聚糖修饰的氧化石墨烯为载体,采用浸渍还原法制备了Pt_mNi_n/CS-RGO催化剂(m∶n=3∶1,1∶1,1∶3)。通过扫描电镜、透射电镜、X射线衍射及X射线光电子能谱对催化剂进行了表征,利用循环伏安法和计时电流法考察了催化剂的活性和稳定性。结果表明,Pt3Ni/CSRGO对于电催化氧化甲醇具有较高的活性和稳定性,Pt3Ni/CS-RGO在1.0 mol·L^(-1)KOH+1.0 mol·L^(-1)CH3OH溶液中的峰电流为189.89 m A·mg^(-1)。
Graphene oxide was synthesized by the modified Hummers method.Pt m Ni n/CS-RGO catalysts(m∶n=3∶1,1∶1,1∶3)were prepared by impregnation reduction method using graphene oxide modified by chitosan as supporter.The catalysts were characterized by scanning electron microscopy(SEM),transmission electron microsco-py(TEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).The activity and stability of the catalysts were investigated by cyclic voltammetry(CV)and chronoamperometry(CA).The results showed that Pt 3Ni/CS-RGO had the higher activity and stability for methanol electrocatalytic oxidation and the peak current of Pt 3Ni/CS-RGO reached 189.89 mA·mg-1 in the solution of 1.0 mol·L-1 KOH+1.0 mol·L-1 CH 3OH.
作者
王永欣
杨铁金
WANG Yong-xin;YANG Tie-jin(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161000,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2018年第4期492-496,共5页
Chemical Research and Application
关键词
壳聚糖
氧化石墨烯
电催化氧化
甲醇
chitosan
graphene oxide
electrocatalytic oxidation
methanol
作者简介
联系人简介:杨铁金(1963-),男,教授,主要从事电化学分析研究。E-mail:tiejin99@126.com。
