光催化
材料科学
异质结
半导体
二亚胺
苝
堆积
可见光谱
化学工程
光电子学
光化学
纳米技术
催化作用
化学
分子
有机化学
工程类
作者
Ruiqi Yang,Guoxin Song,Longwei Wang,Jing Wang,Jian Zhang,Xiao Zhang,Shu Wang,Longhua Ding,Na Ren,Aizhu Wang,Xin Yu
出处
期刊:Small
[Wiley]
日期:2021-08-21
卷期号:17 (39)
被引量:77
标识
DOI:10.1002/smll.202102744
摘要
Antibacterial photocatalytic therapy (APCT) is considered to be a potential treatment for administrating antibiotic-resistant bacteria. However, due to the low photocatalytic efficiency and weak ability to capture bacteria, it is not practically applied. In this work, an organic-metal oxide hybrid semiconductor heterostructure is fabricated for the photocatalytic generation of reactive oxygen species (ROS) to kill the drug-resistant bacteria. The organic semiconductor, perylene diimide (PDI), can self-assemble on Sn3 O4 nanosheets to form a "hook-and-loop" sticky surface that can capture bacteria, via large numbers of hydrogen bonding and π-π stacking interactions, which are not possible in inorganic semiconductors. This easy-to-fabricate hybrid semiconductor also possesses improved photocatalytic activity, which is owing to the formation of heterostructure that achieves full-spectrum absorption, and the reduction of the photocarrier recombination rate to produce more reactive oxygen species. It has a good promoting effect on the wounds of mice infected by Staphylococcus aureus. This work shows new ideas for fabricating smart full-spectrum inorganic-organic hybrid adhesive heterostructure photocatalysts for antibacterial photocatalytic therapy.
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