Facet synergy dominant Z-scheme transition in BiOCl with enhanced 1O2 generation. (November 2022)

• Record Type: Journal Article
• Authors: Guan, Chongshang; Hou, Tian; Nie, Wuyang; Zhang, Qian; Duan, Libing; Zhao, Xiaoru
• Is Part Of: Chemosphere. Volume 307:Part 1(2022)
• Publication Date: 2022-11
• Subjects: BiOCl -- Facet synergy -- 1O2 -- Self-assembling -- Z-Scheme; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.135663
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: BiOCl powders with different morphology were obtained through self-assembling. Their photocatalytic performance was tested through degradation of organic dye and mechanism of photocatalytic for obtained samples were investigated. Relevant characterization demonstrated that facet synergy was a main reason of photocatalytic performance promotion due to changed facet exposure and proportion under self-assembling. Theory and experimental analysis manifested that synergistic facet stimulated Z scheme transition in samples with lower (001) facet proportion, which provided favorable condition of 1 O2 generation and simultaneously generated prominent charge separation. This work unveiled the facet synergy dominant photocatalytic performance improvement in self-assembling system of BiOCl and verified decisive role of facet proportion in constructing Z-scheme facet junction, which also prompted possibility of improving 1 O2 generation through facet engineering under self-assembling. Graphical abstract: Image 1 Highlights: Self-assembling could trigger facet synergy on obtained samples, dominating the photocatalytic process. Facet proportion is a decisive factor in facet junction and only weak enough (001) facet orientation would stimulate Z-scheme junction. Z-scheme transition enhanced 1 O2 generation due to exciton generation improvement.