Z-Scheme CuO(x)/Ag/TiO(2) Heterojunction as Promising Photoinduced Anticorrosion and Antifouling Integrated Coating in Seawater.
Z-Scheme CuO(x)/Ag/TiO(2) Heterojunction as Promising Photoinduced Anticorrosion and Antifouling Integrated Coating in Seawater.
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DOI：
10.3390/molecules28010456
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发表时间：
2023-01-03
期刊：
影响因子：
--
通讯作者：
Rui Z
中科院分区：
文献类型：
--
作者：
Guo X;Pan G;Fang L;Liu Y;Rui Z
在海洋环境中，钢铁材料通常会遇到严重的化学或电化学腐蚀问题，以及蛋白质、细菌和其他海洋生物的污染。设计了一种绿色双功能Z型CuOx/Ag/P25异质结构涂层材料，通过匹配活性氧的氧化还原电位和304 SS的腐蚀电位，实现了防腐蚀和缓蚀的协调。当CuOx/Ag/P25异质结构与被保护的金属耦合时，光照下的开路电位负移约240 mV（vs. Ag/AgCl），光生电流密度达到16.6 μA cm−2。同时，Z型结构产生更多的活性氧，光催化杀菌效果更强。结合Ag和Cu的氧化物的化学灭菌，CuOx/Ag/P25的细菌存活率较低（0.006%）与空白样品相比。该设计为开发具有光电化学防腐和防腐蚀性能的绿色双功能涂层材料提供了策略。
In the marine environment, steel materials usually encounter serious problems with chemical or electrochemical corrosion and fouling by proteins, bacteria, and other marine organisms. In this work, a green bifunctional Z-scheme CuOx/Ag/P25 heterostructure coating material was designed to achieve the coordination of corrosion prevention and antifouling by matching the redox potential of the reactive oxygen species and the corrosion potential of 304SS. When CuOx/Ag/P25 heterostructure was coupled with the protected metal, the open circuit potential under illumination negatively shifted about 240 mV (vs. Ag/AgCl) and the photoinduced current density reached 16.6 μA cm−2. At the same time, more reactive oxygen species were produced by the Z-shape structure, and then the photocatalytic sterilization effect was stronger. Combined with the chemical sterilization of Ag and the oxide of Cu, the bacterial survival rate of CuOx/Ag/P25 was low (0.006%) compared with the blank sample. This design provides a strategy for developing green dual-functional coating materials with photoelectrochemical anticorrosion and antifouling properties.
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