Heterostructured metal sulfide (ZnS-CuS-CdS) photocatalyst for high electron utilization in hydrogen production from solar water splitting

Eunpyo Hong; Duckchen Kim; Jung Hyeun Kim

doi:10.1016/j.jiec.2013.12.092

Heterostructured metal sulfide (ZnS-CuS-CdS) photocatalyst for high electron utilization in hydrogen production from solar water splitting

Eunpyo Hong, Duckchen Kim, Jung Hyeun Kim

Department of Chemical Engineering

University of Seoul

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

100 Scopus citations

Abstract

H₂-production from solar water splitting attracts great attention due to its cleanness and renewable characteristics in converting solar energy into chemical energy. A sequential fabrication approach for metal sulfide photocatalysts consisting of three components (ZnS, CuS, and CdS) is designed in order to achieve efficient charge flows by introducing CuS and CdS on ZnS surfaces. ZnS particles are firstly synthesized as a base material through colloidal precipitation, and then the ZnS surfaces are sequentially modified by adding CuS (cation exchange reaction) and CdS (ionic reaction) precursors. For the final products (ZnS-CuS-CdS), atomic compositions are carefully analyzed. The ZnS-CuS-CdS composite photocatalyst reaches a maximum H₂-production rate (837.6μmol/gh) at Cu 0.81wt% and Cd 14.7wt% under the standard solar irradiation (1kW/m², AM 1.5G) compared to the ZnS only case (13.5μmol/gh). This highly enhanced photocatalytic activity is due to synergistic effects of heterostructured ZnS-CuS-CdS photocatalyst which can improve charge flow and light absorption. This study shows a great possibility of manufacturing multi-component metal sulfide systems for improving H₂-production activity from solar water splitting.

Original language	English
Pages (from-to)	3869-3874
Number of pages	6
Journal	Journal of Industrial and Engineering Chemistry
Volume	20
Issue number	5
DOIs	https://doi.org/10.1016/j.jiec.2013.12.092
State	Published - 25 Sep 2014

Keywords

Charge separation
Hydrogen production
Metal sulfide photocatalyst
Solar water splitting

UN SDGs

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

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10.1016/j.jiec.2013.12.092

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title = "Heterostructured metal sulfide (ZnS-CuS-CdS) photocatalyst for high electron utilization in hydrogen production from solar water splitting",

abstract = "H2-production from solar water splitting attracts great attention due to its cleanness and renewable characteristics in converting solar energy into chemical energy. A sequential fabrication approach for metal sulfide photocatalysts consisting of three components (ZnS, CuS, and CdS) is designed in order to achieve efficient charge flows by introducing CuS and CdS on ZnS surfaces. ZnS particles are firstly synthesized as a base material through colloidal precipitation, and then the ZnS surfaces are sequentially modified by adding CuS (cation exchange reaction) and CdS (ionic reaction) precursors. For the final products (ZnS-CuS-CdS), atomic compositions are carefully analyzed. The ZnS-CuS-CdS composite photocatalyst reaches a maximum H2-production rate (837.6μmol/gh) at Cu 0.81wt% and Cd 14.7wt% under the standard solar irradiation (1kW/m2, AM 1.5G) compared to the ZnS only case (13.5μmol/gh). This highly enhanced photocatalytic activity is due to synergistic effects of heterostructured ZnS-CuS-CdS photocatalyst which can improve charge flow and light absorption. This study shows a great possibility of manufacturing multi-component metal sulfide systems for improving H2-production activity from solar water splitting.",

keywords = "Charge separation, Hydrogen production, Metal sulfide photocatalyst, Solar water splitting",

author = "Eunpyo Hong and Duckchen Kim and Kim, {Jung Hyeun}",

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AU - Hong, Eunpyo

AU - Kim, Duckchen

AU - Kim, Jung Hyeun

PY - 2014/9/25

Y1 - 2014/9/25

N2 - H2-production from solar water splitting attracts great attention due to its cleanness and renewable characteristics in converting solar energy into chemical energy. A sequential fabrication approach for metal sulfide photocatalysts consisting of three components (ZnS, CuS, and CdS) is designed in order to achieve efficient charge flows by introducing CuS and CdS on ZnS surfaces. ZnS particles are firstly synthesized as a base material through colloidal precipitation, and then the ZnS surfaces are sequentially modified by adding CuS (cation exchange reaction) and CdS (ionic reaction) precursors. For the final products (ZnS-CuS-CdS), atomic compositions are carefully analyzed. The ZnS-CuS-CdS composite photocatalyst reaches a maximum H2-production rate (837.6μmol/gh) at Cu 0.81wt% and Cd 14.7wt% under the standard solar irradiation (1kW/m2, AM 1.5G) compared to the ZnS only case (13.5μmol/gh). This highly enhanced photocatalytic activity is due to synergistic effects of heterostructured ZnS-CuS-CdS photocatalyst which can improve charge flow and light absorption. This study shows a great possibility of manufacturing multi-component metal sulfide systems for improving H2-production activity from solar water splitting.

AB - H2-production from solar water splitting attracts great attention due to its cleanness and renewable characteristics in converting solar energy into chemical energy. A sequential fabrication approach for metal sulfide photocatalysts consisting of three components (ZnS, CuS, and CdS) is designed in order to achieve efficient charge flows by introducing CuS and CdS on ZnS surfaces. ZnS particles are firstly synthesized as a base material through colloidal precipitation, and then the ZnS surfaces are sequentially modified by adding CuS (cation exchange reaction) and CdS (ionic reaction) precursors. For the final products (ZnS-CuS-CdS), atomic compositions are carefully analyzed. The ZnS-CuS-CdS composite photocatalyst reaches a maximum H2-production rate (837.6μmol/gh) at Cu 0.81wt% and Cd 14.7wt% under the standard solar irradiation (1kW/m2, AM 1.5G) compared to the ZnS only case (13.5μmol/gh). This highly enhanced photocatalytic activity is due to synergistic effects of heterostructured ZnS-CuS-CdS photocatalyst which can improve charge flow and light absorption. This study shows a great possibility of manufacturing multi-component metal sulfide systems for improving H2-production activity from solar water splitting.

KW - Charge separation

KW - Hydrogen production

KW - Metal sulfide photocatalyst

KW - Solar water splitting

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Heterostructured metal sulfide (ZnS-CuS-CdS) photocatalyst for high electron utilization in hydrogen production from solar water splitting

Abstract

Keywords

UN SDGs

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