Designing a 0D/2D S‐Scheme Heterojunction over Polymeric Carbon Nitride for Visible‐Light Photocatalytic Inactivation of Bacteria. (4th February 2020)

• Record Type: Journal Article
• Authors: Xia, Pengfei; Cao, Shaowen; Zhu, Bicheng; Liu, Mingjin; Shi, Miusi; Yu, Jiaguo; Zhang, Yufeng
• Is Part Of: Angewandte Chemie. Volume 132:Number 13(2020)
• Page Start: 5256
• Page End: 5263
• Publication Date: 2020-02-04
• Subjects: Antibakterielle Materialien -- Photokatalyse -- Polymeres Kohlenstoffnitrid -- S-Schema-Heterokontakte; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201916012
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Constructing heterojunctions between two semiconductors with matched band structure is an effective strategy to acquire high‐efficiency photocatalysts. The S‐scheme heterojunction system has shown great potential in facilitating separation and transfer of photogenerated carriers, as well as acquiring strong photoredox ability. Herein, a 0D/2D S‐Scheme heterojunction material involving CeO2 quantum dots and polymeric carbon nitride (CeO2 /PCN) is designed and constructed by in situ wet chemistry with subsequent heat treatment. This S‐scheme heterojunction material shows high‐efficiency photocatalytic sterilization rate (88.1 %) towards Staphylococcus aureus (S. aureus) under visible‐light irradiation ( λ ≥420 nm), which is 2.7 and 8.2 times that of pure CeO2 (32.2 %) and PCN (10.7 %), respectively. Strong evidence of S‐scheme charge transfer path is verified by theoretical calculations, in situ irradiated X‐ray photoelectron spectroscopy, and electron paramagnetic resonance. Abstract : Antibakteriell : Ein Material mit 0D/2D‐S‐Schema‐Heterokontakt aus CeO2 ‐Quantenpunkten und polymerem Kohlenstoffnitrid (CeO2 /PCN) wurde gezielt entwickelt. Dieses Heterokontaktmaterial zeigt eine hocheffiziente photokatalytische Sterilisationsrate (88.1 %) gegen Staphylococcus aureus bei Bestrahlung mit sichtbarem Licht (λ≥420 nm).