介孔材料
材料科学
纳米结构
电化学
纳米技术
化学工程
纳米材料基催化剂
催化作用
纳米颗粒
组合化学
电催化剂
化学
电极
有机化学
工程类
物理化学
作者
Hao Lv,Aaron Lopes,Dongdong Xu,Ben Liu
出处
期刊:ACS central science
[American Chemical Society]
日期:2018-09-18
卷期号:4 (10): 1412-1419
被引量:98
标识
DOI:10.1021/acscentsci.8b00490
摘要
Controlling the nanostructures and chemical compositions of the electrochemical nanocatalysts has been recognized as two prominent means to kinetically promote the electrocatalytic performance. Herein, we report a general “dual”-template synthesis methodology for the formation of multimetallic hollow mesoporous nanospheres (HMSs) with an adjustable interior hollow cavity and cylindrically opened mesoporous shell as a highly efficient electrocatalyst for ethanol oxidation reaction. Three-dimensional trimetallic PdAgCu HMSs were synthesized via in situ coreduction of Pd, Ag, and Cu precursors on “dual”-template structural directing surfactant of dioctadecyldimethylammonium chloride in optimal synthesis conditions. Due to synergistic advantages on hollow mesoporous nanostructures and multimetallic compositions, the resultant PdAgCu HMSs exhibited significantly enhanced electrocatalytic performance toward ethanol oxidation reaction with a mass activity of 5.13 A mgPd–1 at a scan rate of 50 mV s–1 and operation stability (retained 1.09 A mgpd–1 after the electrocatalysis). The “dual”-template route will open a new avenue to rationally design multimetallic HMSs with controlled functions for broad applications.
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