Effect of synthesis method on the nanostructure and solar-driven photocatalytic properties of TiO2-CuS composites

Shuyan Yu; Jincheng Liu; Yan Zhou; Richard D. Webster; Xiaoli Yan

doi:10.1021/acssuschemeng.6b01769

Effect of synthesis method on the nanostructure and solar-driven photocatalytic properties of TiO₂-CuS composites

Shuyan Yu, Jincheng Liu, Yan Zhou, Richard D. Webster, Xiaoli Yan^*

^*Corresponding author for this work

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

41 Citations (Scopus)

Abstract

TiO₂ nanospheres were synthesized and then modified with copper(II) sulfide (CuS) to form TiO₂-CuS-a and TiO₂-CuS-b, respectively, by two different loading methods (direct deposition vs bifunctional linker coupling). The structural, morphological, and optical properties of the two different composites TiO₂-CuS-a and TiO₂-CuS-b were characterized and compared using FESEM, HRTEM, XRD, XPS, BET, and DRS techniques. The TiO₂-CuS-b with a regular "spiky-ball-like" structure exhibited enhanced disinfection ability, improved photodegradation performance of organic pollutants, and hydrogen evolution efficiency under solar and UV light as compared to TiO₂-CuS-a (direct deposition method) due to its higher effective combination with CuS through the bifunctional linking molecule, L-cysteine. The influence of CuS content, the structure, and the chargetransfer mechanism were systematically investigated by PL, CV, EIS, and EPR techniques.

Original language	English
Pages (from-to)	1347-1357
Number of pages	11
Journal	ACS Sustainable Chemistry and Engineering
Volume	5
Issue number	2
DOIs	https://doi.org/10.1021/acssuschemeng.6b01769
Publication status	Published - Feb 6 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Renewable Energy, Sustainability and the Environment

Keywords

Bifunctional linker coupling
Copper(II) sulfide (CuS)
Direct deposition
Mechanism analysis
Photocatalytic property
TiO nanospheres

UN SDGs

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

Access to Document

10.1021/acssuschemeng.6b01769

Cite this

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title = "Effect of synthesis method on the nanostructure and solar-driven photocatalytic properties of TiO2-CuS composites",

abstract = "TiO2 nanospheres were synthesized and then modified with copper(II) sulfide (CuS) to form TiO2-CuS-a and TiO2-CuS-b, respectively, by two different loading methods (direct deposition vs bifunctional linker coupling). The structural, morphological, and optical properties of the two different composites TiO2-CuS-a and TiO2-CuS-b were characterized and compared using FESEM, HRTEM, XRD, XPS, BET, and DRS techniques. The TiO2-CuS-b with a regular {"}spiky-ball-like{"} structure exhibited enhanced disinfection ability, improved photodegradation performance of organic pollutants, and hydrogen evolution efficiency under solar and UV light as compared to TiO2-CuS-a (direct deposition method) due to its higher effective combination with CuS through the bifunctional linking molecule, L-cysteine. The influence of CuS content, the structure, and the chargetransfer mechanism were systematically investigated by PL, CV, EIS, and EPR techniques.",

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T1 - Effect of synthesis method on the nanostructure and solar-driven photocatalytic properties of TiO2-CuS composites

AU - Yu, Shuyan

AU - Liu, Jincheng

AU - Zhou, Yan

AU - Webster, Richard D.

AU - Yan, Xiaoli

PY - 2017/2/6

Y1 - 2017/2/6

N2 - TiO2 nanospheres were synthesized and then modified with copper(II) sulfide (CuS) to form TiO2-CuS-a and TiO2-CuS-b, respectively, by two different loading methods (direct deposition vs bifunctional linker coupling). The structural, morphological, and optical properties of the two different composites TiO2-CuS-a and TiO2-CuS-b were characterized and compared using FESEM, HRTEM, XRD, XPS, BET, and DRS techniques. The TiO2-CuS-b with a regular "spiky-ball-like" structure exhibited enhanced disinfection ability, improved photodegradation performance of organic pollutants, and hydrogen evolution efficiency under solar and UV light as compared to TiO2-CuS-a (direct deposition method) due to its higher effective combination with CuS through the bifunctional linking molecule, L-cysteine. The influence of CuS content, the structure, and the chargetransfer mechanism were systematically investigated by PL, CV, EIS, and EPR techniques.

AB - TiO2 nanospheres were synthesized and then modified with copper(II) sulfide (CuS) to form TiO2-CuS-a and TiO2-CuS-b, respectively, by two different loading methods (direct deposition vs bifunctional linker coupling). The structural, morphological, and optical properties of the two different composites TiO2-CuS-a and TiO2-CuS-b were characterized and compared using FESEM, HRTEM, XRD, XPS, BET, and DRS techniques. The TiO2-CuS-b with a regular "spiky-ball-like" structure exhibited enhanced disinfection ability, improved photodegradation performance of organic pollutants, and hydrogen evolution efficiency under solar and UV light as compared to TiO2-CuS-a (direct deposition method) due to its higher effective combination with CuS through the bifunctional linking molecule, L-cysteine. The influence of CuS content, the structure, and the chargetransfer mechanism were systematically investigated by PL, CV, EIS, and EPR techniques.

KW - Bifunctional linker coupling

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KW - Direct deposition

KW - Mechanism analysis

KW - Photocatalytic property

KW - TiO nanospheres

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