Dislocation-rich BiOI nanosheets designed by nitrogen ion implantation for improving NIR-triggered bactericidal activity. (January 2023)

• Record Type: Journal Article
• Authors: Ma, Sihan; Li, Yipeng; Luo, Xian; Zhao, Shangquan; Cao, Ziqi; Ding, Yifan; Cui, Dewang; Zhou, Naigen; Wang, Lin; Ran, Guang
• Is Part Of: Materials today energy. Volume 31(2023)
• Publication Date: 2023-01
• Subjects: Ion irradiation -- Dislocation defects -- Bacterial inactivation -- Photothermal-catalysis; Energy development -- Periodicals; Energy industries -- Periodicals; Power resources -- Periodicals; Energy policy -- Periodicals; Energy development; Energy industries; Energy policy; Power resources; Electronic journals; Periodicals; 621.042
• DOI: 10.1016/j.mtener.2022.101214
• Languages: English
• ISSNs: 2468-6069

Abstract

Abstract: Designing high-performance antibacterial agents is crucial for efficient bacterial inactivation in environmental applications. In this study, a potential photothermocatalytic bactericidal candidate BiOI nanosheets with dislocation-rich defects are rationally constructed by employing high-energy nitrogen ion implantation engineering. The constructed BiOI produces an enhanced conductivity due to the lattice atom replacement induced by nitrogen ion implantation, which favors the separation and transfer of electron-hole and inhibits backflow of electrons, leading to boosted photocatalytic activity. Meanwhile, the photothermal activity is dramatically enhanced by controlling the ion irradiation fluence-induced dislocation density. Outstanding antibacterial properties are demonstrated by the long-term irreversible photothermal and photocatalytic destruction under near infrared (NIR) illumination. The ample theory and experiments reveal that the ion-beam implantation is a reliable technique to engineer nanomaterial photothermal catalysts, and the irradiated BiOI nanosheets are highly effective in prompting the bactericidal process. Graphical abstract: Image 1 Highlights: Dislocation-rich BiOI is designed by employing nuclear energy ion irradiation. Nitrogen ion-induced defects and occupancy optimize light-driven performance. Synergistic photothermocatalysis performs satisfying bacterial inactivation. The mechanism of photothermocatalysis is rationally revealed by DFT.