Facet Coupling Design for Bi4TaO8Cl/g‐C3N4 via Electrostatic Self‐Assembly to Enhance Photocatalytic Activity. Issue 2 (17th November 2021)

• Record Type: Journal Article
• Authors: Liu, Chengyin; Zhang, Yihe; Li, Xiaoqiang; Wang, Wei; Huang, Hongwei; Gao, Changfei; Xu, Shanshan; Hu, Wenwen; Zhang, Yuda
• Is Part Of: ChemPhotoChem. Volume 6:Issue 2(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-11-17
• Subjects: Graphitic carbon nitride -- Bi4TaO8Cl -- Mutual electrostatic attraction -- Facets coupling -- Photocatalysis; Photochemistry -- Periodicals; Periodicals; Electronic journals; 541.35
• DOI: 10.1002/cptc.202100184
• Languages: English
• ISSNs: 2367-0932

Abstract

Abstract: Finely heterojunction and coupling facets design are essential to enhance photocatalytic activity. Herein, 2D/2D g‐C3 N4 −Bi4 TaO8 Cl catalysts were generated by ball‐milling‐assisted electrostatic self‐assembly strategy. The surface charge of Bi4 TaO8 Cl‐(001) facet can be fine altered from negative to positive by acidic solution treatment, resulting in that Bi4 TaO8 Cl nanoplates are parallelly coupled with g‐C3 N4 ‐(002) plane to form top‐top coupling facets. The facets coupling optimization, strong interfacial electric field and contact, and rapid charge transfer endow (002)g‐C3 N4 /(001) Bi4 TaO8 Cl catalysts with greatly enhanced photocatalytic activity of CO production and MO degradation relative to individual g‐C3 N4, Bi4 TaO8 Cl and lateral‐top g‐C3 N4 −Bi4 TaO8 Cl catalyst. This present study provides inspiration to further design high‐performance heterojunction catalysts by adjusting surface charge with simple method. Abstract : The fabrication of top‐top (002)g‐C3 N4 /(001)Bi4 TaO8 Cl catalyst is achieved by controlling the surface charge. The top‐top facet coupled catalyst exhibits excellent photocatalytic activity on fuel production and wastewater treatment compared with g‐C3 N4, Bi4 TaO8 Cl and lateral‐top g‐C3 N4 −Bi4 TaO8 Cl catalyst. The electrostatic self‐assembled catalysts maintain their tight structure during multiple photocatalytic experimental runs. This work enriches the facet charge induced strategy for the fabrication of high photocatalytic activity materials.