Zhang, Jungang Zhu, Qiaohong Wang, Lingzhi Nasir, Muhammad Cho, So-Hye Zhang, Jinlong 2024-01-19T17:00:52Z 2024-01-19T17:00:52Z 2021-09-02 2020-08-21 0360-3199 https://pubs.kist.re.kr/handle/201004/118247 In this work, a 2D/2D heterojunction composed of CoAl layered double hydroxide (LDH) and graphitic carbon nitride nanosheets (CNNS) was designed and fabricated for boosting photocatalytic hydrogen generation. The as-prepared 20 mol% CoAl-LDH/CNNS exhibited a remarkable photocatalytic hydrogen evolution rate of 680.13 mu mol h(-1)g(-1), which was 21 times higher than that of pure CoAl-LDH (32.91 mu mol h(-1)g(-1)). The enhanced activity could be mainly attributed to its unique structure and high surface area. Distinct from ordinary heterojunction photocatalysts, two-dimensional (2D) heterojunctions with abundant 2D coupling interfaces and strong interfacial interaction could efficiently suppress the recombination of photo-induced charge carriers and shorten charge transmission distance. Particularly, compared with other concentrations, the increased surface area (138.70 m(2) g(-1)) of 20 mol% CoAl-LDH/CNNS, which is 3.94 times of pure CNNS (35.48 m(2)g(-1)) is more favorable for enhanced photocatalytic activity. Increasing the surface area of sheet-on-sheet heterostructure is an effective and novel strategy to facilitate the photocatalytic hydrogen evolution from water splitting. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD LAYERED DOUBLE HYDROXIDES GRAPHITIC CARBON NITRIDE HIGH-PERFORMANCE H-2 EVOLUTION BIFUNCTIONAL ELECTROCATALYST 0D-2D HETEROJUNCTION CHARGE SEPARATION POROUS G-C3N4 EFFICIENT WATER g-C3N4/CoAl-LDH 2D/2D hybrid heterojunction for boosting photocatalytic hydrogen evolution Article 10.1016/j.ijhydene.2020.05.171 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.45, no.41, pp.21331 - 21340 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45 41 21331 21340 scie scopus 000558598300053 2-s2.0-85086521047 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article LAYERED DOUBLE HYDROXIDES GRAPHITIC CARBON NITRIDE HIGH-PERFORMANCE H-2 EVOLUTION BIFUNCTIONAL ELECTROCATALYST 0D-2D HETEROJUNCTION CHARGE SEPARATION POROUS G-C3N4 EFFICIENT WATER g-C3N4 nanosheets CoAl layered Double hydroxide 2D/2D heterojunction Photocatalytic hydrogen evolution