聚合
水溶液
胺气处理
化学
电化学
盐酸盐
化学工程
材料科学
高分子化学
有机化学
聚合物
电极
工程类
物理化学
作者
Xinghuan Liu,Junjie Kang,Yiqing Wang,Wei Li,Heling Guo,Liang Xu,Xuhong Guo,Feng Zhou,Xin Jia
标识
DOI:10.1002/marc.201800160
摘要
Dopamine (DA) polymerization has received significant attention in many fields, however, almost all of the works are limited to aqueous solution and hamper its wide application. This paper reports that amines can trigger DA polymerization by capturing the H+ from DA hydrochloride and intermediates to accelerate the generation of radical species in water or organic solvents. Increasing concentration and decreasing pKb of amines cause the reaction equilibrium to shift toward the product polydopamine (PDA). Water-soluble and easily-removable Na2 SO4 nanowires and NaCl cubes can be used as templates to prepare different morphologies of hollow PDA structures by DA polymerization in ethanol solution. The carbonization production of PDA nanotubes at 900 °C (PDNC-900) is obtained and demonstrates electrochemical activity in the oxygen reduction reaction that is comparable to that of Pt/C.
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