Electrosynthesis of a novel polyindole derivative from 5-aminoindole and its use as catalyst support for formic acid electrooxidation
Electrosynthesis of a novel polyindole derivative from 5-aminoindole and its use as catalyst support for formic acid electrooxidation
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5-氨基吲哚电合成新型聚吲哚衍生物及其作为甲酸电氧化催化剂载体的应用
DOI：
10.1016/j.electacta.2012.05.150
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发表时间：
2012-08
影响因子：
6.6
通讯作者：
Ping Yang
中科院分区：
文献类型：
--
作者：
Ruirui Yue;Fengxing Jiang;Yukou Du;Jingkun Xu;Ping Yang
在含有0.02M 5-氨基吲哚(AIN)的0.5M硫酸水溶液中，用动电位法合成了一种新型导电聚合物聚(5-氨基吲哚)(PIN)。所合成的聚合物薄膜在水溶液中表现出良好的电化学活性和稳定性。1HNMR、UV-Vis和发射光谱分析证实了聚合物的形成具有共轭链结构，聚合主要发生在C(2)和C(3)位，NH2和NH保持不变。在此基础上，通过在聚合物修饰碳布(CC)电极上电沉积铂微纳米粒子，合成了一种复合催化剂。用扫描电子显微镜、能谱和电化学分析对复合催化剂进行了表征。与纯铂相比，沉积在CC电极上的铂/Pain复合催化剂对甲酸电氧化具有更高的催化活性和更强的抗中毒能力。交流阻抗谱表明，甲酸在Pt/Pain/CC上的电氧化荷移电阻小于在铂/CC上的荷移电阻。目前的研究表明，一种很有前途的导电聚合物Pain被用作甲酸电氧化的催化剂载体，进一步提高复合催化剂的催化活性的工作正在进行中。
A novel conducting polymer, poly(5-aminoindole) (PAIn), one of polyindole derivatives, has been electrosynthesized by potentiodynamic method in 0.5M H2SO4aqueous solution containing 0.02M 5-aminoindole (AIn). As-synthesized polymer films show good electrochemical activity and stability in aqueous solution.1H NMR, UV–visible and emission spectral analyses confirmed the formation of the polymer with conjugated chain structure and that the polymerization mainly occurred at C(2) and C(3) positions with NH2and NH remaining intact. Based on as-prepared PAIn, a composite catalyst has been synthesized via electrodepositing Pt micro/nano-particles on the polymer modified carbon cloth (CC) electrode. As-formed composite catalysts were characterized by SEM, EDX and electrochemical analyses. Compared with pure Pt particles, the Pt/PAIn composite catalyst deposited on CC electrode (denoted as Pt/PAIn/CC) shows higher catalytic activity and stronger poisoning-tolerance for formic acid electrooxidation. Electrochemical impedance spectroscopy shows that the charge-transfer resistance for formic acid electrooxidation on Pt/PAIn/CC is smaller than that on Pt/CC. The present study shows a promising conducting polymer, PAIn, used as the catalyst support for formic acid electrooxidation, and further work on improving the catalytic activity of the composite catalyst is under way.
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影响因子：
7.2
作者：
Weiqiang Zhou;Jingkun Xu;Yukou Du;Ping Yang
通讯作者：
Weiqiang Zhou;Jingkun Xu;Yukou Du;Ping Yang
影响因子：
6.6
作者：
Jayashree, RS;Spendelow, JS;Kenis, PJA
通讯作者：
Kenis, PJA
DOI：
10.1039/a703128i
发表时间：
1997-11-07
期刊：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS
影响因子：
--
作者：
Jennings, P;Jones, AC;Thomson, AD
通讯作者：
Thomson, AD
影响因子：
3.9
作者：
Hsing, IM;Wang, X;Leng, YJ
通讯作者：
Leng, YJ
影响因子：
5.4
作者：
S. Palmero;Á. Colina;E. Muñoz;A. Heras;V. Ruiz;J. López-Palacios
通讯作者：
S. Palmero;Á. Colina;E. Muñoz;A. Heras;V. Ruiz;J. López-Palacios