Preparation and Oxidative Property of Polypyrrole/Nano-SiO2 Composite

Xiao-hua Wu; Qiu-hong Kang; Fang-ming Qian; Li-li Jiang; Ke-ming Fang

doi:10.11777/j.issn1000-3304.2015.14401

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Preparation and Oxidative Property of Polypyrrole/Nano-SiO2 Composite

Research Article | 更新时间：2021-03-19

- Preparation and Oxidative Property of Polypyrrole/Nano-SiO2 Composite
- Acta Polymerica Sinica Issue 5, Pages: 596-601(2015)
- 作者机构：
  
  浙江师范大学化学与生命科学学院,金华,321004
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2015.14401
  CLC：
- Published：20 May 2015，
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Xiao-hua Wu, Qiu-hong Kang, Fang-ming Qian, Li-li Jiang, Ke-ming Fang. Preparation and Oxidative Property of Polypyrrole/Nano-SiO2 Composite. [J]. Acta Polymerica Sinica (5):596-601(2015)
DOI：

Xiao-hua Wu, Qiu-hong Kang, Fang-ming Qian, Li-li Jiang, Ke-ming Fang. Preparation and Oxidative Property of Polypyrrole/Nano-SiO2 Composite. [J]. Acta Polymerica Sinica (5):596-601(2015) DOI： 10.11777/j.issn1000-3304.2015.14401.

摘要

采用化学氧化法制备聚吡咯/纳米SiO2(PPy/nSiO2)复合材料

通过扫描电子显微镜和红外光谱对其进行表征

并将其应用到对苯二酚的氧化反应中.结果表明

PPy/nSiO2复合材料中

PPy较均匀地负载在纳米SiO2表面.在弱酸性介质中

PPy/nSiO2对对苯二酚具有很好的氧化性能.反应2 h内

对苯二酚的氧化过程符合表观一级反应动力学.结合紫外-可见光谱法分析表明

聚吡咯通过与对苯二酚之间的氢键相互作用形成聚吡咯活性中间体

将对苯二酚氧化为对苯醌

聚吡咯具有氧化剂和催化剂的双重功能.

Abstract

Polypyrrole/nano-SiO2 composite (PPy/nSiO2) was prepared by chemical oxidative polymerization and characterized by SEM and FTIR techniques.It was used for oxidative degradation of hydroquinone.The results showed that polypyrrole was loaded on the surface of nano-SiO2 evenly.With nSiO2 used as the carrier

agglomeration phenomenon of polypyrrole could be effectively inhibited.As compared with PPy

PPy/nSiO2 exhibited high oxidative property for hydroquinone in weak acid solutions

and the degradation process was in line with the rule of the apparent first-order kinetics within 2 h.The results of UV-Visible spectroscopy showed that hydroquinone was oxidized to be benzoquinone by the polypyrrole reactive intermediates

which was formed between hydroquinone and polypyrrole by hydrogen bond interactions.After recovery treatment of PPy/nSiO2

oxidation removal of hydroquinone on PPy/nSiO2 within 120 min was 84.1% under the same conditions.Polypyrrole had a dual function both as the catalyst and the oxidant for oxidative degradation of hydroquinone.

关键词

聚吡咯二氧化硅对苯二酚氧化紫外-可见光谱法

Keywords

PolypyrroleNano-SiO2HydroquinoneOxidationUV-Vis spectrum

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Related Institution

College of Textile, Key Laboratory of Textile Science & Technology of the Ministry of Education, Key Laboratory of Biomedical Textile Materials and Technology in Textile Industry, Shanghai Frontiers Science Center of Advanced Textiles, Donghua University

College of Textile, Key Laboratory of Textile Science & Technology of the Ministry of Education, Key Laboratory of Biomedical Textile Materials and Technology in Textile Industry, Donghua University

School of Material and Engineering, Central South University

State Engineering Laboratory of Surface Engineering Technology of Modern Materials, Guangdong Academy of Sciences

Department of Chemical Engineering, Taiyuan University of Technology

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