Construction of 2D BiVO4−CdS−Ti3C2Tx Heterostructures for Enhanced Photo-redox Activities

Wuyou Wang; Zachary D. Hood; Xuanyu Zhang; Ilia N. Ivanov; Zhenghong Bao; Tongming Su; Mingzhou Jin; Lei Bai; Xuewen Wang; Rongbin Zhang; Zili Wu

doi:10.1002/cctc.202000448

Construction of 2D BiVO₄−CdS−Ti₃C₂T_x Heterostructures for Enhanced Photo-redox Activities

Wuyou Wang, Zachary D. Hood, Xuanyu Zhang, Ilia N. Ivanov, Zhenghong Bao, Tongming Su, Mingzhou Jin, Lei Bai, Xuewen Wang, Rongbin Zhang, Zili Wu

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

34 Scopus citations

Abstract

Photocatalytic evolution of hydrogen and oxygen from water splitting over semiconductors is an efficient method for solar energy conversion. In this study, the 2D/2D BiVO₄−CdS heterostructures with Ti₃C₂T_x (T_x=O, OH, F) as a co-catalyst were synthesized by two steps as the visible-light-driven photocatalysts. Compared with BiVO₄ and CdS, the heterostructured catalysis exhibit greatly enhanced photocatalytic hydrogen and oxygen production performances and excellent photodegradation and photoreduction activities of methylene blue (MB) and potassium dichromate Cr(VI), respectively. The remarkable enhancement is attributed to the proposed Z-scheme carrier transfer derived from the 2D/2D BiVO₄−CdS heterostructures. Charge separation and transfer of photoexcited electrons and holes pairs are further enhanced after loading Ti₃C₂T_x in the BiVO₄−CdS heterostructures. The potential Z-scheme photocatalytic system and co-catalyst endows the BiVO₄−CdS−Ti₃C₂T_x heterostructures with strong photo-redox capacity and excellent stability in solar energy conversion.

Original language	English
Pages (from-to)	3496-3503
Number of pages	8
Journal	ChemCatChem
Volume	12
Issue number	13
DOIs	https://doi.org/10.1002/cctc.202000448
State	Published - Jul 6 2020

Funding

This work was supported by the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. WW acknowledges the fellowship from China Scholarship Council. We thank Dr. Michael Naguib from Tulane University for providing the MXene materials. This work was supported by the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. WW acknowledges the fellowship from China Scholarship Council. We thank Dr. Michael Naguib from Tulane University for providing the MXene materials.

Keywords

2D materials
BiVO−CdS heterostructure
TiCT co-catalyst
Z-scheme
hydrogen and oxygen evolution

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/cctc.202000448

Cite this

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title = "Construction of 2D BiVO4−CdS−Ti3C2Tx Heterostructures for Enhanced Photo-redox Activities",

abstract = "Photocatalytic evolution of hydrogen and oxygen from water splitting over semiconductors is an efficient method for solar energy conversion. In this study, the 2D/2D BiVO4−CdS heterostructures with Ti3C2Tx (Tx=O, OH, F) as a co-catalyst were synthesized by two steps as the visible-light-driven photocatalysts. Compared with BiVO4 and CdS, the heterostructured catalysis exhibit greatly enhanced photocatalytic hydrogen and oxygen production performances and excellent photodegradation and photoreduction activities of methylene blue (MB) and potassium dichromate Cr(VI), respectively. The remarkable enhancement is attributed to the proposed Z-scheme carrier transfer derived from the 2D/2D BiVO4−CdS heterostructures. Charge separation and transfer of photoexcited electrons and holes pairs are further enhanced after loading Ti3C2Tx in the BiVO4−CdS heterostructures. The potential Z-scheme photocatalytic system and co-catalyst endows the BiVO4−CdS−Ti3C2Tx heterostructures with strong photo-redox capacity and excellent stability in solar energy conversion.",

keywords = "2D materials, BiVO−CdS heterostructure, TiCT co-catalyst, Z-scheme, hydrogen and oxygen evolution",

author = "Wuyou Wang and Hood, {Zachary D.} and Xuanyu Zhang and Ivanov, {Ilia N.} and Zhenghong Bao and Tongming Su and Mingzhou Jin and Lei Bai and Xuewen Wang and Rongbin Zhang and Zili Wu",

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AU - Wang, Wuyou

AU - Hood, Zachary D.

AU - Zhang, Xuanyu

AU - Ivanov, Ilia N.

AU - Bao, Zhenghong

AU - Su, Tongming

AU - Jin, Mingzhou

AU - Bai, Lei

AU - Wang, Xuewen

AU - Zhang, Rongbin

AU - Wu, Zili

PY - 2020/7/6

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N2 - Photocatalytic evolution of hydrogen and oxygen from water splitting over semiconductors is an efficient method for solar energy conversion. In this study, the 2D/2D BiVO4−CdS heterostructures with Ti3C2Tx (Tx=O, OH, F) as a co-catalyst were synthesized by two steps as the visible-light-driven photocatalysts. Compared with BiVO4 and CdS, the heterostructured catalysis exhibit greatly enhanced photocatalytic hydrogen and oxygen production performances and excellent photodegradation and photoreduction activities of methylene blue (MB) and potassium dichromate Cr(VI), respectively. The remarkable enhancement is attributed to the proposed Z-scheme carrier transfer derived from the 2D/2D BiVO4−CdS heterostructures. Charge separation and transfer of photoexcited electrons and holes pairs are further enhanced after loading Ti3C2Tx in the BiVO4−CdS heterostructures. The potential Z-scheme photocatalytic system and co-catalyst endows the BiVO4−CdS−Ti3C2Tx heterostructures with strong photo-redox capacity and excellent stability in solar energy conversion.

AB - Photocatalytic evolution of hydrogen and oxygen from water splitting over semiconductors is an efficient method for solar energy conversion. In this study, the 2D/2D BiVO4−CdS heterostructures with Ti3C2Tx (Tx=O, OH, F) as a co-catalyst were synthesized by two steps as the visible-light-driven photocatalysts. Compared with BiVO4 and CdS, the heterostructured catalysis exhibit greatly enhanced photocatalytic hydrogen and oxygen production performances and excellent photodegradation and photoreduction activities of methylene blue (MB) and potassium dichromate Cr(VI), respectively. The remarkable enhancement is attributed to the proposed Z-scheme carrier transfer derived from the 2D/2D BiVO4−CdS heterostructures. Charge separation and transfer of photoexcited electrons and holes pairs are further enhanced after loading Ti3C2Tx in the BiVO4−CdS heterostructures. The potential Z-scheme photocatalytic system and co-catalyst endows the BiVO4−CdS−Ti3C2Tx heterostructures with strong photo-redox capacity and excellent stability in solar energy conversion.

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