Home

Citation: XUE Xiao-Kang, GUO Xing-Peng, YU Cheng-Ping. Preparation of a Potentiometric pH Sensor Based on Polypyrrole[J]. Chinese Journal of Applied Chemistry, ;2005, 22(4): 435-439. shu

Preparation of a Potentiometric pH Sensor Based on Polypyrrole

1.
Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074

Corresponding author: GUO Xing-Peng,
Received Date: 4 June 2004
Available Online: 18 October 2004

A pH sensor was fabricated from polypyrrole (PPy) on Pt wire.PPy was prepared electrochemically in a 0.1 mol/L Py aqueous solution with or without addition of 0.1 mol/L NaHCO₃ and characterized by means of infrared absorption spectroscopy (IR) and electrochemical impedance spectroscopy (EIS).The Nyquist plots for non-doped PPy in an acid solution (pH=4.01),a neutral solution (pH=6.85),and an alkali solution (pH=9.14) were composed of two semicircles in the high and mid frequency regions and a Warburg response arisen by H⁺ diffusion process in the low frequency region.The Nyquist plots for HCO₃^--doped PPy in corresponding pH buffer solutions were composed of two semicircles in the tested frequency region and did not show the Warburg response.In the latter case,the charge transfer resistance and the film resistance of PPy were increased apparently.The electrochemically synthesized non-doped PPy as a pH-indicator electrode had satisfactory potentiometric properties:sub-Nernstian response with a slope of 49.32 mV/pH at buffer solutions of pH 3 to 10,excellent linearity,r=-0.997 1,and relatively short response time and small selectivity coefficient to conventional positive ions such as K⁺ and Na⁺.
- polypyrrole,
- pH sensor,
- electrochemical polymerization,
- AC impedance
1. [1]
  Huirong BAO , Jun YANG , Xiaomiao FENG . Preparation and electrochemical properties of NiCoP/polypyrrole/carbon cloth by electrodeposition. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1083-1093. doi: 10.11862/CJIC.20250008
2. [2]
  Lin′an CAO , Dengyue MA , Gang XU . Research advances in electrically conductive metal-organic frameworks-based electrochemical sensors. Chinese Journal of Inorganic Chemistry, 2025, 41(10): 1953-1972. doi: 10.11862/CJIC.20250160
3. [3]
  Jiarong Feng , Yejie Duan , Chu Chu , Dezhen Xie , Qiu'e Cao , Peng Liu . Preparation and Application of a Streptomycin Molecularly Imprinted Electrochemical Sensor: A Suggested Comprehensive Analytical Chemical Experiment. University Chemistry, 2024, 39(8): 295-305. doi: 10.3866/PKU.DXHX202401016
4. [4]
  Yang Meiqing , Lu Wang , Haozi Lu , Yaocheng Yang , Song Liu . Recent Advances of Functional Nanomaterials for Screen-Printed Photoelectrochemical Biosensors. Acta Physico-Chimica Sinica, 2025, 41(2): 100018-0. doi: 10.3866/PKU.WHXB202310046
5. [5]
  Junlin Ma , Enze Wang , Haixia Wu . 柔性电化学传感器的制备及其在重金属离子现场便携检测中的应用. University Chemistry, 2026, 41(5): 455-468. doi: 10.12461/PKU.DXHX202509102
6. [6]
  Xingchao Zhao , Xiaoming Li , Ming Liu , Zijin Zhao , Kaixuan Yang , Pengtian Liu , Haolan Zhang , Jintai Li , Xiaoling Ma , Qi Yao , Yanming Sun , Fujun Zhang . Photomultiplication-Type All-Polymer Photodetectors and Their Applications in Photoplethysmography Sensor. Acta Physico-Chimica Sinica, 2025, 41(1): 100007-0. doi: 10.3866/PKU.WHXB202311021
7. [7]
  Hao WANG , Kun TANG , Jiangyang SHAO , Kezhi WANG , Yuwu ZHONG . Electro-copolymerized film of ruthenium catalyst and redox mediator for electrocatalytic water oxidation. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2193-2202. doi: 10.11862/CJIC.20240176
8. [8]
  Lingbang Qiu , Jiangmin Jiang , Libo Wang , Lang Bai , Fei Zhou , Gaoyu Zhou , Quanchao Zhuang , Yanhua Cui . In Situ Electrochemical Impedance Spectroscopy Monitoring of the High-Temperature Double-Discharge Mechanism of Nb₁₂WO₃₃ Cathode Material for Long-Life Thermal Batteries. Acta Physico-Chimica Sinica, 2025, 41(5): 100040-0. doi: 10.1016/j.actphy.2024.100040
9. [9]
  Leyu DING , Ying HE , Zhihe WEI , Yang PENG , Zhao DENG . Conductive polypyrrole-confined Co-MOF-74 for high-performance lithium metal anodes. Chinese Journal of Inorganic Chemistry, 2025, 41(12): 2491-2502. doi: 10.11862/CJIC.20250176
10. [10]
  Tiantian MA , Sumei LI , Chengyu ZHANG , Lu XU , Yiyan BAI , Yunlong FU , Wenjuan JI , Haiying YANG . Methyl-functionalized Cd-based metal-organic framework for highly sensitive electrochemical sensing of dopamine. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 725-735. doi: 10.11862/CJIC.20230351
11. [11]
  Ke Zhao , Zhen Liu , Luyao Liu , Changyuan Yu , Jingshun Pan , Xuguang Huang . Functionalized Reflective Structure Fiber-Optic Interferometric Sensor for Trace Detection of Lead Ions. Acta Physico-Chimica Sinica, 2024, 40(4): 2304029-0. doi: 10.3866/PKU.WHXB202304029
12. [12]
  Yijie Zhong , Yurun Tong , Weitao Wang , Ru Qiao , Jing Zhang , Enlai Hu , Peijun Gong . 基于“双极”技术的电势-pH图解析与电化学性能优化基础实验. University Chemistry, 2026, 41(5): 264-274. doi: 10.12461/PKU.DXHX202511071
13. [13]
  Qiaoqiao BAI , Anqi ZHOU , Xiaowei LI , Tang LIU , Song LIU . Construction of pressure-temperature dual-functional flexible sensors and applications in biomedicine. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2259-2274. doi: 10.11862/CJIC.20240128
14. [14]
  Wei Zheng , Yanyu Chen , Rizhong Gao , Chao Lu . Development and Application of Primary Battery-based Humidity Sensors: Advancing a New Paradigm for Integrated Experimental Teaching through Science-Education Synergy. University Chemistry, 2026, 41(4): 393-399. doi: 10.12461/PKU.DXHX202503009
15. [15]
  Lu XU , Chengyu ZHANG , Wenjuan JI , Haiying YANG , Yunlong FU . Zinc metal-organic framework with high-density free carboxyl oxygen functionalized pore walls for targeted electrochemical sensing of paracetamol. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 907-918. doi: 10.11862/CJIC.20230431
16. [16]
  Jing SU , Bingrong LI , Yiyan BAI , Wenjuan JI , Haiying YANG , Zhefeng Fan . Highly sensitive electrochemical dopamine sensor based on a highly stable In-based metal-organic framework with amino-enriched pores. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1337-1346. doi: 10.11862/CJIC.20230414
17. [17]
  Yun Chen , Daijie Deng , Li Xu , Xingwang Zhu , Henan Li , Chengming Sun . Covalent bond modulation of charge transfer for sensitive heavy metal ion analysis in a self-powered electrochemical sensing platform. Acta Physico-Chimica Sinica, 2026, 42(1): 100144-0. doi: 10.1016/j.actphy.2025.100144
18. [18]
  Hong Yan , Wenfeng Wang , Keyin Ye , Yaofeng Yuan . Organic Electrochemistry and Its Integration into Chemistry Teaching. University Chemistry, 2025, 40(5): 301-310. doi: 10.12461/PKU.DXHX202407027
19. [19]
  Tingting Yu , Si Chen , Lianglong Sun , Tongtong Shi , Kai Sun , Xin Wang . Comprehensive Experimental Design for the Photochemical Synthesis, Analysis, and Characterization of Difluoropyrroles. University Chemistry, 2024, 39(11): 196-203. doi: 10.3866/PKU.DXHX202401022
20. [20]
  Linbao Zhang , Weisi Guo , Shuwen Wang , Ran Song , Ming Li . Electrochemical Oxidation of Sulfides to Sulfoxides. University Chemistry, 2024, 39(11): 204-209. doi: 10.3866/PKU.DXHX202401009

Get Citation

PDF

XML

Metrics

PDF Downloads(1)
Abstract views(1244)
HTML views(60)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return