Layer-Contacted Graphene-Like BN/Ultrathin Bi3O4Br Stacking for Boosting Photocatalytic Molecular Oxygen Activation

Jun Di; Yan Li; Yi Zhang; Yiling Liu; Suwei Wang; Yao Wu; Huaming Li; Jiexiang Xia

doi:10.1007/s12209-022-00344-9

Transactions of Tianjin University ›› 2022, Vol. 29 ›› Issue (3) : 235 -245. DOI: 10.1007/s12209-022-00344-9

Research Article

Layer-Contacted Graphene-Like BN/Ultrathin Bi₃O₄Br Stacking for Boosting Photocatalytic Molecular Oxygen Activation

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¹ School of Chemistry and Chemical Engineering, National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, 210094, Nanjing, China

² School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore

³ School of Physics and Electronic-Electrical Engineering, Ningxia University, 750000, Yinchuan, China

⁴ School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 212013, Zhenjiang, China

^a dijun@njust.edu.cn

^h xjx@ujs.edu.cn

Jun Di received his BS degree in (2012) and PhD degree (2018) from Jiangsu University (with Professor Huaming Li). He then carried out postdoctoral research (2018–2022) at Nanyang Technological University with Professor Zheng Liu. He is a professor at Nanjing University of Science and Technology. He is the first or corresponding author of more than 60 peer-reviewed scientific papers published on Nat. Commun., Coord. Chem. Rev., Adv. Mater., Angew. Chem. Int. Ed., Mater. Today etc., with over 10,000 citations and H-index of 55. His research interests focus on design and synthesis of 2D materials for photocatalytic energy conversion.

Jiexiang Xia received his BS and Ph.D. degrees in 2006 and 2011 (with Professor Huaming Li), both from the Jiangsu University, China. He is a professor at the Jiangsu University. He carried out postdoctoral research at the Oak Ridge National Laboratory (USA) from 2016–2018. He is the author or co-author of more than 200 peer-reviewed scientific papers published on Nat. Commun., Adv. Mater., Angew. Chem. Int. Ed., Appl. Catal. B etc., with over 15,000 citations. His research interests include synthesis of ionic liquids, development of functional materials for energy and environmental applications.

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Abstract

Novel graphene-like boron nitride (BN)/Bi₃O₄Br photocatalysts have been controllably synthesized through a facile solvothermal method for the first time. Layer contact stacking between graphene-like BN and ultrathin Bi₃O₄Br was achieved with strong interaction. Dehalogenation is designed to harvest more visible light, and the ultrathin structure of Bi₃O₄Br is designed to accelerate charge transfer from inside to the surface. After graphene-like BN was engineered, photocatalytic performance greatly improved under visible light irradiation. Graphene-like BN can act as a surface electron-withdrawing center and adsorption center, facilitating molecular oxygen activation. O₂ ^•− was determined to be the main active species during the degradation process through analyses of electron spin resonance and XPS valence band spectra.

Keywords

Graphene-like boron nitride (BN) / Bi₃O₄Br / Photocatalytic / Molecular oxygen activation

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Jun Di, Yan Li, Yi Zhang, Yiling Liu, Suwei Wang, Yao Wu, Huaming Li, Jiexiang Xia. Layer-Contacted Graphene-Like BN/Ultrathin Bi₃O₄Br Stacking for Boosting Photocatalytic Molecular Oxygen Activation. Transactions of Tianjin University, 2022, 29(3): 235-245 DOI:10.1007/s12209-022-00344-9

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