Formation of p-BN@Zn/Co-ZIF Hybrid materials for improved photocatalytic CO2 reduction by H2O. (August 2022)

• Record Type: Journal Article
• Authors: Wang, Yunsheng; Hu, Guoqi; Feng, Yajing; Zhang, Xianjin; Song, Chenxu; Lin, Jing; Huang, Yang; Zhang, Yujie; Liu, Zhenya; Tang, Chengchun; Yu, Chao
• Is Part Of: Materials research bulletin. Volume 152(2022)
• Publication Date: 2022-08
• Subjects: Zn/Co-ZIF -- Porous boron nitride -- Hybrid materials -- CO2 reduction -- Photocatalysis; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2022.111867
• Languages: English
• ISSNs: 0025-5408

Abstract

Highlights: Synthesis of p-BN@Zn/Co-ZIF hybrid materials with high specific surface area and porosity. Formation of analogue type-II heterojunction through the synergistic effect. CO2 photoreduction occured in a pure water system without electron donor or cocatalysts. p-BN@Zn/Co-ZIF hybrid materials exhibited excellent photocatalytic CO2 reduction activity and selectivity of CO. Abstract: A series of p-BN@Zn/Co-ZIF hybrid materials were successfully prepared by the integration of porous boron nitride (p-BN) and bimetallic zeolite imidazolate framework (Zn/Co-ZIF). The as-prepared hybrid materials possessed a high specific surface area and porosity, thus allowing efficient capture and activation of CO2 . At the same time, the formation of analogue type-II heterojunction through the synergistic effect of p-BN and Zn/Co-ZIF contributed to the rapid separation and transfer of photogenerated charge carriers. As a result, the photocatalytic CO2 reduction activity of p-BN@Zn/Co-ZIF was significantly enhanced. In particular, the yield of CO was up to 152.2 μmol∙g −1, corresponding to 6.68-folds increase over that of pure Zn/Co-ZIF, and the selectivity of CO in the total products reached 93.57%. Taking into account the chemical and structural tunability of p-BN and Zn/Co-ZIF, it is expected that the excellent photocatalytic capabilities of the p-BN@Zn/Co-ZIF hybrid materials will be further applied to the wider field of solar fuel synthesis. Graphical Abstract: Image, graphical abstract Porous boron nitride (p-BN) and bimetallic zeolite imidazolate framework (Zn/Co-ZIF) are combined to form p-BN@Zn/Co-ZIF hybrid materials, which exhibit excellent performance in the adsorption and photocatalytic reduction of CO2.