磷钨铁杂多酸/聚酰胺胺复合膜的制备及电催化性能

基金项目: 国家自然科学基金(20771024); 福建省自然科学基金(2008J0142)

详细信息

Preparation and its electrocatalytic properties of iron (Ⅲ) tungstophosphate/ poly dendrimer multilayered films

1.
College of Chemistry and Materials, Fujian Normal University, Fuzhou 350007, China;
2.
Fuqing Branch of Fujian Normal University, Fuqing 350300, China;
3.
Minnan Science and Technology Institute, Fujian Normal University, Nan’an 362332, China

摘要

摘要: 通过层层自组装方法在氧化铟锡(ITO)电极上原位制备了Dawson型磷钨铁杂多酸/聚酰胺-胺复合膜。用XPS、UV-Vis、CV、AFM分析表征复合膜的形成过程和电化学性能。结果表明: 杂多酸阴离子和聚酰胺-胺层层自组装形成多层复合膜且增长均匀; 复合膜在酸性溶液中出现了三对氧化还原峰; 用该复合膜修饰的电极稳定性好, 对亚硝酸盐和溴酸盐均具有良好的电催化活性。
- 磷钨铁杂多酸 /
- 聚酰胺-胺 /
- 多层复合膜 /
- 电催化
Abstract: The multilayer films constructed from Dawson-type iron(Ⅲ)-monosubstituted tungstophosphate and a generation-4 poly(amidoamine) dendrimer(PAMAM) were prepared on the ITO electrode by the layer-by-layer self- assembly method and characterized by XPS, UV-Vis, CV and AFM. It was shown that P₂W₁₇Fe and PAMAM were gradually and uniformly incorporated into the films. Three couples of redox waves were observed in the cyclic voltammetry of the title multilayer films at acidic condition. The title multilayer films are stable and exhibit good electrocatalytic activity on the reduction of NO^-₂and BrO^-₃.
- iron(Ⅲ)-monosubstituted tungstophosphate /
- poly(amidoamine) /
- multilayer films /
- electrocatalysis