A Sulfhydryl Azobenzene-Modified Polyaniline/Silver Electrode and Its Photoswitching Electrochemical Performance.
A Sulfhydryl Azobenzene-Modified Polyaniline/Silver Electrode and Its Photoswitching Electrochemical Performance.
复制标题
巯基偶氮苯修饰的聚苯胺/银电极及其光开关电化学性能
DOI：
10.1021/acsomega.1c00645
复制
发表时间：
2021-05-04
期刊：
影响因子：
4.1
通讯作者：
Teng Y
中科院分区：
文献类型：
--
作者：
Xue C;Li S;Tang Y;An C;Liu S;Teng Y
在这项工作中，合成了巯基官能化的偶氮苯衍生物（Azo），并对聚苯胺/银进行改性（PANI/Ag）以制备纳米复合材料（PANI/Ag/Azo）。采用 1HNMR、紫外可见吸收光谱、拉曼光谱、FT-IR、XRD、SEM、TEM 和 TGA 等一系列表征技术来研究偶氮、聚苯胺/银和聚苯胺/银/偶氮。通过循环伏安法（CV）和恒电流充电/放电（GCD）测量电化学性能。 CV表明紫外线和蓝光对PANI/Ag几乎没有任何影响。然而，随着紫外光照射时间的延长，PANI/Ag/Azo 的最大CV电流密度从1.24 A g–1上升至2.72 A g–1。然后，蓝光照射20分钟后，最大电流密度逐渐恢复（从2.72到1.26 A g-1）。 GCD也得到了类似的结果。经过公式计算，PANI/Ag/Azo的比电容在紫外光和蓝光交替照射下也呈现出可逆的趋势。所有结果表明PANI/Ag/Azo具有良好的光电响应，其电化学性能可通过光进行可逆调节。该结果为开发具有实时电化学性能的电极材料提供了新的设计思路。
In this work, a sulfhydryl-functionalized azobenzene derivative (Azo) was synthesized and polyaniline/silver was modified (PANI/Ag) to make a nanocomposite (PANI/Ag/Azo). A series of characterization techniques like1HNMR, UV–vis absorption spectra, Raman spectra, FT-IR, XRD, SEM, TEM, and TGA was employed to study Azo, PANI/Ag, and PANI/Ag/Azo. Electrochemical properties were measured by cyclic voltammetry (CV) and galvanostatic charging/discharging (GCD). CV showed that UV and blue light had hardly any effect on PANI/Ag. However, with the prolonged exposure time of UV light, the maximum CV current density of PANI/Ag/Azo rose from 1.24 to 2.72 A g–1. Then, after 20 min of blue light irradiation, the maximum current density gradually recovered (from 2.72 to 1.26 A g–1). The GCD also obtained similar results. After formula calculation, the specific capacitance of PANI/Ag/Azo also presented a reversible trend under the alternating irradiation of UV light and blue light. All the results show that PANI/Ag/Azo has a good photoelectric response, and its electrochemical performance can be reversibly adjusted by light. This result provides a new design idea for developing electrode materials with real-time electrochemical properties.
登录
查看更多内容
影响因子：
3.7
作者：
BREDAS, JL;THEMANS, B;CHANCE, RR
通讯作者：
CHANCE, RR
影响因子：
4.2
作者：
Dhibar, Saptarshi;Das, Chapal Kumar
通讯作者：
Das, Chapal Kumar
影响因子：
4.6
作者：
Hu, Daqiao;Lin, Jizhi;Yang, Bo
通讯作者：
Yang, Bo
影响因子：
9.2
作者：
Laforgue, A;Simon, P;Fauvarque, JF
通讯作者：
Fauvarque, JF
影响因子：
3.7
作者：
Li, Xia;Gao, Yu;Qu, Lunyu
通讯作者：
Qu, Lunyu