Title : Hydrogenated Heterojunction of Boron Nitride and Titania Enables the Photocatalytic Generation of H2 in the Absence of Noble Metal Catalysts

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Title of Paper:Hydrogenated Heterojunction of Boron Nitride and Titania Enables the Photocatalytic Generation of H2 in the Absence of Noble Metal Catalysts

Journal:Appl. Catal. B: Environ

Abstract:The increasing need for new materials capable of solar fuel production is central to the development of green energy economy. Utilizing solar energy for hydrogen generation is a great challenge due to inefficient light utilization and fast charge recombination. In this work, disorder-engineered black H-TiO2@BN with Ti-B chemically bonded interfaces was synthesized by employing BN nanosheets as the photocatalyst support. The hybridization of TiO2 with BN and hydrogenated thermal treatment work synergistically to enable the photo catalytic H-2 production without noble metal cocatalysts. The hybrid photocatalyst markedly enhanced light absorption, significantly retarded charge pair recombination, facilitated interfacial electron transfer, and lowered interfacial charge transfer resistance. As a result, the photocatalytic H-2 production activity of H-TiO2@BN that consisted of earth-abundant elements only was comparable to that of Pt-TiO2. The present hybrid engineering for the efficient charge separation and transfer via the formation of the interfacial chemical bonds should provide a useful methodology for designing the new types of hybrid photocatalysts.

All the Authors:Chuhyung Kim,TaeHwa Jeon

First Author:Zuoli He

Indexed by:Journal paper

Correspondence Author:Wonyong Choi

Discipline:Engineering

First-Level Discipline:Environmental Science and Engineering

Issue:237

Page Number:772-782

Translation or Not:no

Date of Publication:2018-04-01