Untangling the intricacies of redox reactions on Poly (3,4-ethylenedioxythiophene) in anoxic bacteria environment

doi:10.1016/j.electacta.2025.145993

IMR OpenIR

	Untangling the intricacies of redox reactions on Poly (3,4-ethylenedioxythiophene) in anoxic bacteria environment
	Udowo, Victor Malachy 1,2,3; Yan, Maocheng 1; Liu, Fuchun 1,2; Gao, Bowen 1; Okafor, Peter C.4
通讯作者	Yan, Maocheng(yanmc@imr.ac.cn)
	2025-06-01
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	524 页码:11
摘要	Poly(3,4-ethylenedioxythiophene) (PEDOT) film, electrochemically polymerized on stainless steel, was subjected to testing in an anoxic environment containing sulfate-reducing bacteria (SRB). Results of the electrodes' open circuit potentials demonstrate that the PEDOT film was seamlessly discharged by electrons given up by substrate oxidation in the bacteria culture. Subsequently, the PEDOT film was reoxidized by mediating sulfate reduction reactions (catalyzed by SRB) on the steel surface to keep the polymer film conducting, thus ensuring the reversibility of redox reactions. The polymer degradation ensued following prolonged exposure of the PEDOT film to the bacteria environment, evidenced by the formation of carbonyl groups in the polymer's backbone, depletion of elemental carbon, increased surface roughness, and a 74 % resultant decrease in electrode capacitance in 24 h of testing. Galvanic interaction between the CP and the steel substrate was crucial to maintaining the reversible redox reactions on the PEDOT film.
关键词	Conducting polymer PEDOT SRB Biointerface interaction Corrosion
资助者	National Natural Science Foundation of China
DOI	10.1016/j.electacta.2025.145993
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52071320]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:001448558900001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/192084
专题	中国科学院金属研究所
通讯作者	Yan, Maocheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Veritas Univ, Dept Ind Chem, Abuja, Nigeria 4.Univ Calabar, Dept Pure & Appl Chem, Electrochem Res Grp, Calabar, Nigeria
推荐引用方式 GB/T 7714	Udowo, Victor Malachy,Yan, Maocheng,Liu, Fuchun,et al. Untangling the intricacies of redox reactions on Poly (3,4-ethylenedioxythiophene) in anoxic bacteria environment[J]. ELECTROCHIMICA ACTA,2025,524:11.
APA	Udowo, Victor Malachy,Yan, Maocheng,Liu, Fuchun,Gao, Bowen,&Okafor, Peter C..(2025).Untangling the intricacies of redox reactions on Poly (3,4-ethylenedioxythiophene) in anoxic bacteria environment.ELECTROCHIMICA ACTA,524,11.
MLA	Udowo, Victor Malachy,et al."Untangling the intricacies of redox reactions on Poly (3,4-ethylenedioxythiophene) in anoxic bacteria environment".ELECTROCHIMICA ACTA 524(2025):11.