摘要
采用微生物培养与检测、电化学测试及表面分析等方法研究了ZnO纳米粒子对硫酸盐还原菌(SRB)的抑菌性能及对304不锈钢的微生物腐蚀行为影响。结果表明:ZnO纳米粒子能够通过接触杀菌作用和催化生成活性氧物质(ROS)从而抑制SRB的活性,抑菌率随ZnO纳米粒子含量的增加而增大,当ZnO纳米粒子质量浓度为100 mg·L^(-1)时,抑菌率达到89.3%;通过ZnO纳米粒子对SRB的抑菌作用,减少了SRB的代谢产物以及在不锈钢表面黏附而形成的微生物膜,降低了不锈钢的钝态电流密度,抑制了不锈钢的微生物腐蚀。
The sterilization of ZnO nanoparticles on sulfate-reducing bacteria(SRB)and the microbial corrosion behavior of 304 stainless steel were investigated by methods of microbial culture and detection,electrochemical measurements and surface analysis.The results show that ZnO nanoparticles could inhibit SRB activity through the contact sterilizing effect and catalytic generation of reactive oxygen species(ROS),and the sterilizing rate increased to 89.3%when the concentration of ZnO nanoparticles increased to 100 mg·L^(-1).The sterilizing effect of ZnO nanoparticles on SRB reduced the metabolites of SRB,the microbial film adhered on the surface of stainless steel,then reduced the passive current density of stainless steel,and thereby inhibited the microbial corrosion of stainless steel.
作者
张嘉琳
崔伟
葛红花
李骥
张依萱
杨华
赵玉增
孟新静
ZHANG Jialin;CUI Wei;GE Honghua;LI Ji;ZHANG Yixuan;YANG Hua;ZHAO Yuzeng;MENG Xinjing(Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,Shanghai Engineering Research Center of Energy Saving in Heat Exchange Systems,Shanghai University of Electric Power,Shanghai 200090,China;Shanghai Emperor of Cleaning Hi-Tech Co.,Ltd.,Shanghai 200437,China)
出处
《腐蚀与防护》
CAS
CSCD
北大核心
2024年第5期12-17,25,共7页
Corrosion & Protection
基金
上海市自然科学基金(20ZR1421500)
上海市科委项目(19DZ2271100)。
关键词
硫酸盐还原菌
不锈钢
微生物腐蚀
ZNO纳米粒子
sulfate-reducing bacteria
stainless steel
microbial corrosion
ZnO nanoparticle
