In situ construction of elemental phosphorus nanorod-modified TiO2 photocatalysts for efficient visible-light-driven H2 generation

Shuang Li; Yun Hau Ng; Ruixue Zhu; Sijie Lv; Chunxiao Wu; Yuxi Liu; Lin Jing; Jiguang Deng; Hongxing Dai

doi:10.1016/j.apcatb.2021.120412

In situ construction of elemental phosphorus nanorod-modified TiO₂ photocatalysts for efficient visible-light-driven H₂ generation

Shuang Li, Yun Hau Ng, Ruixue Zhu, Sijie Lv, Chunxiao Wu, Yuxi Liu, Lin Jing^*, Jiguang Deng, Hongxing Dai

^*Corresponding author for this work

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

In this work, we constructed a red phosphorus (RP)/TiO₂ composite system via a chemical vapor deposition strategy. The evolution of the fibrous phased RP nanorods on the surface of anatase TiO₂ spheres was rationally adjusted by controlling the composition of precursors. The optimal RP/TiO₂ composite exhibited a significantly enhanced visible-light-driven photocatalytic H₂ generation rate of 681 μmol h⁻¹ g⁻¹. The tightly interior surface bonding between RP and TiO₂ greatly promoted the efficient charge transfer and redistribution by suppressing the charge recombination and self-trapping processes within TiO₂, resulting in prolonged lifetimes of the active charges during the photocatalytic process as investigated in detailed using femtosecond time-resolved transient absorption (fs-TA) spectroscopy.

Original language	English (US)
Article number	120412
Journal	Applied Catalysis B: Environmental
Volume	297
DOIs	https://doi.org/10.1016/j.apcatb.2021.120412
State	Published - Nov 15 2021

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

Hydrogen evolution
Photocatalysis
Red phosphorus
TiO

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2021.120412

Cite this

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title = "In situ construction of elemental phosphorus nanorod-modified TiO2 photocatalysts for efficient visible-light-driven H2 generation",

abstract = "In this work, we constructed a red phosphorus (RP)/TiO2 composite system via a chemical vapor deposition strategy. The evolution of the fibrous phased RP nanorods on the surface of anatase TiO2 spheres was rationally adjusted by controlling the composition of precursors. The optimal RP/TiO2 composite exhibited a significantly enhanced visible-light-driven photocatalytic H2 generation rate of 681 μmol h−1 g−1. The tightly interior surface bonding between RP and TiO2 greatly promoted the efficient charge transfer and redistribution by suppressing the charge recombination and self-trapping processes within TiO2, resulting in prolonged lifetimes of the active charges during the photocatalytic process as investigated in detailed using femtosecond time-resolved transient absorption (fs-TA) spectroscopy.",

keywords = "Hydrogen evolution, Photocatalysis, Red phosphorus, TiO",

author = "Shuang Li and Ng, {Yun Hau} and Ruixue Zhu and Sijie Lv and Chunxiao Wu and Yuxi Liu and Lin Jing and Jiguang Deng and Hongxing Dai",

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AU - Li, Shuang

AU - Ng, Yun Hau

AU - Zhu, Ruixue

AU - Lv, Sijie

AU - Wu, Chunxiao

AU - Liu, Yuxi

AU - Jing, Lin

AU - Deng, Jiguang

AU - Dai, Hongxing

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AB - In this work, we constructed a red phosphorus (RP)/TiO2 composite system via a chemical vapor deposition strategy. The evolution of the fibrous phased RP nanorods on the surface of anatase TiO2 spheres was rationally adjusted by controlling the composition of precursors. The optimal RP/TiO2 composite exhibited a significantly enhanced visible-light-driven photocatalytic H2 generation rate of 681 μmol h−1 g−1. The tightly interior surface bonding between RP and TiO2 greatly promoted the efficient charge transfer and redistribution by suppressing the charge recombination and self-trapping processes within TiO2, resulting in prolonged lifetimes of the active charges during the photocatalytic process as investigated in detailed using femtosecond time-resolved transient absorption (fs-TA) spectroscopy.

KW - Hydrogen evolution

KW - Photocatalysis

KW - Red phosphorus

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