光催化
纳米复合材料
材料科学
光致发光
异质结
化学工程
钛
氧化物
氧化钛
碳化钛
碳化物
纳米技术
复合材料
化学
光电子学
有机化学
冶金
催化作用
工程类
作者
Huimeng Feng,Wei Wang,Mutian Zhang,Shidong Zhu,Qi Wang,Jianguo Liu,Shougang Chen
标识
DOI:10.1016/j.apcatb.2020.118609
摘要
In this study, for the first time, we report the design of titanium carbide (Ti3C2) – based nanocomposites to realize a highly efficient antibacterial effect. Stable reduced silver @ titanium carbide @ cuprous oxide ([email protected]3C2@Cu2O) nanocomposites with efficient antibacterial activities were synthesized via a simple wet chemical method at room temperature and developed as highly efficient photocatalytic bactericides for antifouling. The [email protected]3C2@Cu2O nanocomposites showed excellent antibacterial activities against Pseudomonas aeruginosa and Staphylococcus aureus. The electron-hole recombination efficiency of the nanocomposites was analyzed by characterizing the photoluminescence spectra, which indicated that the charge transfer channel imparted by the heterostructure between the nanocomposites considerably improved charge transport and separation efficiency, prolonged the life of active electrons, and promoted the generation of reactive oxygen species. Furthermore, density functional theory calculations and finite element method calculations indicated that the structure of nanocomposites reduces the difficulty of photoelectron escaping during photocatalysis and improves photocatalytic efficiency.
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