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基于聚苯胺的pH电极及其在CO2检测中的应用研究

金妍瞿晓虎陈淼金庆辉赵建龙

传感技术学报Issue(10)：1468-1472,5.

传感技术学报Issue(10)：1468-1472,5.DOI:10.3969/j.issn.1004-1699.2013.10.028

基于聚苯胺的pH电极及其在CO2检测中的应用研究

Study on Polyaniline Modified pH Electrode and Its Applicaion in CO2 Sensing

金妍 ¹瞿晓虎 ²陈淼 ³金庆辉 ⁴赵建龙⁴

作者信息

1. 中国科学院上海微系统与信息技术研究所传感技术联合国家重点实验室，上海200050
2. CSIRO Process Science and Engineering，Box 312，Clayton south，Victoria 3169，Australia
3. 中国科学院大学，北京100049
4. CSIRO Process Science and Engineering，Box 312，Clayton south，Victoria 3169，Australia
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摘要

Abstract

In this study,polyaniline( PANI) modified graphite pH electrode has been developed and investigated,and proved to be successfully used in carbon dioxide( CO2 ) sensing. The electropolymerisation of PANI was carried out on the graphite electrode by Cyclic voltammetry method in hydrochloric acid aniline solution. It’s found that the PANI modified pH electrode showed super-Nernstain pH reponse in pH 1 ~pH 12 range:-63 . 80 mV/pH ( T=23 ℃),-65. 81 mV/pH(T=48℃). In addition,its response in strong acid solutions(pH 1~pH 3)was studied in detail,which showed -41.68 mV/pH(T=23 ℃)and -86. 12 mV/pH(T=48 ℃)pH sensitivity,thus could be used in bioleaching system. This PANI modified pH electrode was then applied into CO2 sensing according to the Severinghaus principle. This CO2 electrode exhibited good potentiometric properties( linear range:0~1 000 mbar, sensitivity:42. 25 mV/pCO2(mbar)= 0. 61 pH/pCO2(mbar),R2=0. 9839). The PANI modified pH electrode could be used in pH and CO2 sensing in bioleaching system.

关键词

pH电极/聚苯胺/循环伏安法/CO2 检测/生物冶金

Key words

pH electrode/Polyaniline/Cyclic voltammetry/CO2 sensing/bioleaching system

分类

信息技术与安全科学

引用本文复制引用

金妍,瞿晓虎,陈淼,金庆辉,赵建龙..基于聚苯胺的pH电极及其在CO2检测中的应用研究[J].传感技术学报,2013,(10):1468-1472,5.

基金项目

国家科技支撑计划项目(2012BAK08B05) （2012BAK08B05）

上海市创新行动计划项目(201101042,11CH_15,11530700800,11391901900) （201101042,11CH_15,11530700800,11391901900）

传感技术学报

OA北大核心CSCDCSTPCD

ISSN：1004-1699

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