Development of micro-nanostructured film with antibacterial, anticorrosive and thermal conductivity properties on copper surface

IF 4.5 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Bioelectrochemistry Pub Date : 2025-01-15 DOI:10.1016/j.bioelechem.2025.108905

Li Lai, Muqiu Xia, Mengyu Fu, Yuanyuan Gao, Jiahao Sun, Guangzhou Liu, Shiqiang Chen

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Abstract

A micro-nano sharkskin like film (Cu-MNS-FA) was synthesized on copper surface through chemical etching followed by formate passivation, and its anticorrosive, antibacterial and thermal conductivity properties were investigated. Results show that after 7 d of exposure to nature, Pseudomonas aeruginosa and Desulfovibrio vulgaris seawater, the charge transfer resistance of Cu-MNS-FA is more than three times higher than that of unmodified copper. In particular, in D. vulgaris seawater, the R_ct value of modified copper is 7 times higher than that of unmodified copper after the same exposure duration. The counts of sessile cells, specifically P. aeruginosa and D. vulgaris, on the surface of modified copper are reduced by > 88 % after 3 days of immersion. Furthermore, thermal conductivity remains 10 % higher than that of untreated copper after 7 d of immersion. This film improves the performance characteristics of copper in seawater heat exchange systems.

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铜表面具有抗菌、防腐和导热性能的微纳结构薄膜的研制。

采用化学蚀刻和甲酸钝化的方法在铜表面合成了一种微纳类鲨鱼皮膜（Cu-MNS-FA），并对其防腐、抗菌和导热性能进行了研究。结果表明，Cu-MNS-FA在自然环境、铜绿假单胞菌和普通脱硫弧菌海水中暴露7 d后，其电荷传递电阻比未改性的铜高3倍以上。特别是在寻常海雀海水中，相同暴露时间后，改性铜的Rct值比未改性铜的Rct值高7倍。铜绿假单胞菌（P. aeruginosa）和普通单胞菌（D. vulgaris）在改性铜表面浸泡3天后，细胞数量减少了约88%。此外，浸泡7天后，导热系数仍比未处理的铜高10%。该膜改善了海水换热系统中铜的性能特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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文献相关原料

公司名称

产品信息

麦克林

oleylamine

麦克林

Sodium formate

阿拉丁

carboxylated nanodiamond (ND-COOH)

阿拉丁

Polyethylenimine (PEI)

来源期刊

Bioelectrochemistry 生物-电化学

CiteScore

9.10

自引率

6.00%

发文量

238

审稿时长

38 days

期刊介绍： An International Journal Devoted to Electrochemical Aspects of Biology and Biological Aspects of Electrochemistry Bioelectrochemistry is an international journal devoted to electrochemical principles in biology and biological aspects of electrochemistry. It publishes experimental and theoretical papers dealing with the electrochemical aspects of: • Electrified interfaces (electric double layers, adsorption, electron transfer, protein electrochemistry, basic principles of biosensors, biosensor interfaces and bio-nanosensor design and construction. • Electric and magnetic field effects (field-dependent processes, field interactions with molecules, intramolecular field effects, sensory systems for electric and magnetic fields, molecular and cellular mechanisms) • Bioenergetics and signal transduction (energy conversion, photosynthetic and visual membranes) • Biomembranes and model membranes (thermodynamics and mechanics, membrane transport, electroporation, fusion and insertion) • Electrochemical applications in medicine and biotechnology (drug delivery and gene transfer to cells and tissues, iontophoresis, skin electroporation, injury and repair). • Organization and use of arrays in-vitro and in-vivo, including as part of feedback control. • Electrochemical interrogation of biofilms as generated by microorganisms and tissue reaction associated with medical implants.