Oxygen Vacancies‐Rich Heterojunction of Ti3C2/BiOBr for Photo‐Excited Antibacterial Textiles

Pathogenic bacteria that adhere on the surface of textiles, especially healthcare workers’ uniforms, have brought severe problems, including nosocomial infection and other infectious diseases. Here, antibacterial textiles are fabricated by in situ growing oxygen vacancies (OVs) BiOBr on the surface...

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Published inSmall (Weinheim an der Bergstrasse, Germany) Vol. 18; no. 5
Main Authors Li, Jianfang, Ma, Lili, Li, Zhaoyang, Liu, Xiangmei, Zheng, Yufeng, Liang, Yanqin, Liang, Chunyong, Cui, Zhenduo, Zhu, Shengli, Wu, Shuilin
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 01.02.2022
Subjects
Antibacterial materials
Catalytic activity
E coli
Heterojunctions
Hyperthermia
Infectious diseases
Light irradiation
Nanomaterials
Nanotechnology
Oxygen
oxygen vacancies
Photocatalysis
photo‐excited antibacterial textiles
Polypyrroles
Schottky heterojunctions
Textiles
Ti 3C 2/BiOBr
Vacancies
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Summary:Pathogenic bacteria that adhere on the surface of textiles, especially healthcare workers’ uniforms, have brought severe problems, including nosocomial infection and other infectious diseases. Here, antibacterial textiles are fabricated by in situ growing oxygen vacancies (OVs) BiOBr on the surface of Ti3C2 nanosheets followed by in situ polymerization of polypyrrole (ppy). The formed Schottky heterojunction containing OVs of Ti3C2/BiOBr effectively enhance the transfer and separation of photogenerated carriers, inhibit the recombination, and decrease the band gap by introducing defect level, which significantly improve the photocatalytic activity, leading to higher reactive oxygen species (ROS) under light irradiation. Therefore, the antibacterial efficacy of textiles reaches up to 98.64% against Staphylococcus aureus and 99.89% against Escherichia coli with the assistance of hyperthermia under light irradiation for 15 min. This work provides insights for designing photo‐excited antibacterial textiles by interfacial construction based on Schottky junctions and OVs in the incorporated nanomaterials. The interface of Ti3C2/BiOBr including Schottky junction and oxygen vacancies can accelerate the separation and transfer of photogenerated electrons and holes under irradiation, improving ROS production. The textiles contain Ti3C2/BiOBr followed by in situ polymerization polypyrrole can reach excellent antibacterial effect by the synergistic action of photoeffect, polypyrrole and its hydrophobicity.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202104448