In-situ electrochemical surface-enhanced Raman spectroscopy study of formic acid electrooxidation at variable temperatures by high-frequency heating technology
In-situ electrochemical surface-enhanced Raman spectroscopy study of formic acid electrooxidation at variable temperatures by high-frequency heating technology
复制标题
高频加热技术变温甲酸电氧化原位电化学表面增强拉曼光谱研究
DOI：
10.1016/j.electacta.2018.05.167
复制
发表时间：
2018-08
影响因子：
6.6
通讯作者：
JingTang
中科院分区：
文献类型：
--
作者：
WenChang Xie;YunLing;Ya ZhenZhang;HePan;Guo KunLiu;JingTang
采用原位电化学表面增强拉曼光谱（EC-SERS）和高频加热技术相结合的方法研究了甲酸（HCOOH）在不同温度下的电氧化过程。利用高频加热技术，在工作电极（热电偶微电极，TCME）表面可在1 s内调节任意预设温度。利用循环伏安法和EC-SERS研究了甲酸在Au@Pt纳米粒子表面的电氧化行为。循环伏安法表明，温度升高可提高Au@Pt/TCME对甲酸氧化的催化活性。EC-SERS结果表明，随着温度的升高，Pt的单键C带强度逐渐减弱，说明高温有利于CO从Pt表面的氧化脱附，促进了催化反应的进行。这一工作可用于HCOOH高温电氧化催化剂的筛选，也可用于其他变温EC-SERS研究。
The combination of in-situ electrochemical surface-enhanced Raman spectroscopy (EC-SERS) and high-frequency heating technology was used to investigate formic acid (HCOOH) electrooxidation at variable temperatures. Any preset temperature could be adjusted within 1 s on the surface of the working electrode (thermocouple microelectrode, TCME) by using the high-frequency heating technology. Cyclic voltammetry and EC-SERS were used to investigate the electrooxidation behavior of HCOOH on the surface of Au@Pt nanoparticles. Cyclic voltammetry showed that elevated temperatures improve the catalytic activity of Au@Pt/TCME toward HCOOH oxidation. The EC-SERS results showed that the intensity of the Ptsingle bondC band decreased with an increase in temperature, which indicates that a high temperature favors the oxidative desorption of CO from the Pt surface and improves the catalytic reaction. This work could be used to screen catalysts for HCOOH electrooxidation at high temperature, or for other investigations of EC-SERS at variable temperatures.
登录
查看更多内容
酸性介质中Pt/C催化剂上甲醇和甲酸电氧化的电化学阻抗研究
影响因子：
9.2
作者：
Shao, Ai-Fen;Yin, Ge-Ping;Zuo, Peng-Jian;Wang, Zhen-Bo;Chu, Yuan-Yuan
通讯作者：
Chu, Yuan-Yuan
影响因子：
4.9
作者：
Minkyu Min;Cheonghee Kim;Young In Yang;J. Yi;Hyunjoon Lee
通讯作者：
Minkyu Min;Cheonghee Kim;Young In Yang;J. Yi;Hyunjoon Lee
影响因子：
3.9
作者：
Yanfang Sun;Ting Zhou;Qingyan Pan;Xiao Zhang;Jinxue Guo
通讯作者：
Yanfang Sun;Ting Zhou;Qingyan Pan;Xiao Zhang;Jinxue Guo
通过壳隔离纳米颗粒增强拉曼光谱对异质纳米催化过程进行原位动态跟踪
影响因子：
16.6
作者：
Zhang H;Wang C;Sun HL;Fu G;Chen S;Zhang YJ;Chen BH;Anema JR;Yang ZL;Li JF;Tian ZQ
通讯作者：
Tian ZQ
影响因子：
7.4
作者：
A. Boika;A. Baranski
通讯作者：
A. Boika;A. Baranski