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Li, Jianfang; Li, Zhaoyang; Liu, Xiangmei; Li, Changyi; Zheng, Yufeng; Yeung, Kelvin Wai Kwok; Cui, Zhenduo; Liang, Yanqin; Zhu, Shengli; Hu, Wenbin; Qi, Yajun; Zhang, Tianjin; Wang, Xianbao; Wu, Shuilin
Nature communications, 02/2021, Letnik: 12, Številka: 1Journal Article
Abstract In view of increasing drug resistance, ecofriendly photoelectrical materials are promising alternatives to antibiotics. Here we design an interfacial Schottky junction of Bi 2 S 3 /Ti 3 C 2 T x resulting from the contact potential difference between Ti 3 C 2 T x and Bi 2 S 3 . The different work functions induce the formation of a local electrophilic/nucleophilic region. The self-driven charge transfer across the interface increases the local electron density on Ti 3 C 2 T x . The formed Schottky barrier inhibits the backflow of electrons and boosts the charge transfer and separation. The photocatalytic activity of Bi 2 S 3 /Ti 3 C 2 T x intensively improved the amount of reactive oxygen species under 808 nm near-infrared radiation. They kill 99.86% of Staphylococcus aureus and 99.92% of Escherichia coli with the assistance of hyperthermia within 10 min. We propose the theory of interfacial engineering based on work function and accordingly design the ecofriendly photoresponsive Schottky junction using two kinds of components with different work functions to effectively eradicate bacterial infection.
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in: SICRIS
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