Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction

Photocatalytic efficiency of graphitic carbon nitride (g–C3N4) has been hindered by fast carrier recombination and high reaction energy barriers, which can be improved by combining a semiconductor with a large work function. Based on this strategy, we synthesized a novel Pt/t–ZrO2/g–C3N4 composite b...

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Main Authors: Li, Huanhuan, Wu, Yong, Li, Can, Gong, Yinyan, Niu, Lengyuan, Liu, Xinjuan, Jiang, Qing, Sun, Changqing, Xu, Shiqing
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/146811
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1468112021-03-11T06:17:14Z Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction Li, Huanhuan Wu, Yong Li, Can Gong, Yinyan Niu, Lengyuan Liu, Xinjuan Jiang, Qing Sun, Changqing Xu, Shiqing School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Catalyst Design Work Function Photocatalytic efficiency of graphitic carbon nitride (g–C3N4) has been hindered by fast carrier recombination and high reaction energy barriers, which can be improved by combining a semiconductor with a large work function. Based on this strategy, we synthesized a novel Pt/t–ZrO2/g–C3N4 composite by integrating g–C3N4 with tetragonal ZrO2 and Pt nanoparticles. Results of experimental measurements and density functional theory simulation demonstrate that the carrier lifetime, transferability and energy barriers of catalysts depend on their work function. The optimal composite exhibits an extraordinary catalytic ability for hydrogen generation of 722.5 μmol(gh)−1 and solar–to–hydrogen energy conversion efficiency of 0.215% under visible–light irradiation, and high catalytic stability. The modification strategy could be applied to designing various different high–efficient catalysts by selecting semiconductors with suitable work functions. This work was supported in part by the Natural Science Foundation of Zhejiang Province, China (LY18E020007, LQ18E030005 and LY19F020006). Computational resources were provided by the Jilin University. 2021-03-11T06:17:14Z 2021-03-11T06:17:14Z 2019 Journal Article Li, H., Wu, Y., Li, C., Gong, Y., Niu, L., Liu, X., Jiang, Q., Sun, C. & Xu, S. (2019). Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction. Applied Catalysis B: Environmental, 251, 305-312. https://dx.doi.org/10.1016/j.apcatb.2019.03.079 0926-3373 0000-0002-0370-2695 0000-0002-3041-6635 https://hdl.handle.net/10356/146811 10.1016/j.apcatb.2019.03.079 2-s2.0-85063899677 251 305 312 en Applied Catalysis B: Environmental © 2019 Elsevier B.V. All rights reserved
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Catalyst Design
Work Function
spellingShingle Engineering::Electrical and electronic engineering
Catalyst Design
Work Function
Li, Huanhuan
Wu, Yong
Li, Can
Gong, Yinyan
Niu, Lengyuan
Liu, Xinjuan
Jiang, Qing
Sun, Changqing
Xu, Shiqing
Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
description Photocatalytic efficiency of graphitic carbon nitride (g–C3N4) has been hindered by fast carrier recombination and high reaction energy barriers, which can be improved by combining a semiconductor with a large work function. Based on this strategy, we synthesized a novel Pt/t–ZrO2/g–C3N4 composite by integrating g–C3N4 with tetragonal ZrO2 and Pt nanoparticles. Results of experimental measurements and density functional theory simulation demonstrate that the carrier lifetime, transferability and energy barriers of catalysts depend on their work function. The optimal composite exhibits an extraordinary catalytic ability for hydrogen generation of 722.5 μmol(gh)−1 and solar–to–hydrogen energy conversion efficiency of 0.215% under visible–light irradiation, and high catalytic stability. The modification strategy could be applied to designing various different high–efficient catalysts by selecting semiconductors with suitable work functions.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Li, Huanhuan
Wu, Yong
Li, Can
Gong, Yinyan
Niu, Lengyuan
Liu, Xinjuan
Jiang, Qing
Sun, Changqing
Xu, Shiqing
format Article
author Li, Huanhuan
Wu, Yong
Li, Can
Gong, Yinyan
Niu, Lengyuan
Liu, Xinjuan
Jiang, Qing
Sun, Changqing
Xu, Shiqing
author_sort Li, Huanhuan
title Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
title_short Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
title_full Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
title_fullStr Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
title_full_unstemmed Design of Pt/t-ZrO2/g-C3N4 efficient photocatalyst for the hydrogen evolution reaction
title_sort design of pt/t-zro2/g-c3n4 efficient photocatalyst for the hydrogen evolution reaction
publishDate 2021
url https://hdl.handle.net/10356/146811
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