Hierarchical NiCo 2 S 4 /ZnIn 2 S 4 heterostructured prisms: High-efficient photocatalysts for hydrogen production under visible-light
Exploring low-cost co-catalyst to ameliorate the photocatalytic activity of semiconductors sets a clear direction for solving energy crisis and achieving efficient solar-chemical energy conversion. In this work, a unique hierarchical hollow heterojunction was constructed by in-situ growing ZnIn S na...
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Published in | Journal of colloid and interface science Vol. 619; p. 339 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.08.2022
|
Subjects | |
Online Access | Get full text |
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Abstract | Exploring low-cost co-catalyst to ameliorate the photocatalytic activity of semiconductors sets a clear direction for solving energy crisis and achieving efficient solar-chemical energy conversion. In this work, a unique hierarchical hollow heterojunction was constructed by in-situ growing ZnIn
S
nanosheets on the porous NiCo
S
hollow prisms through a low temperature solvothermal method, in which NiCo
S
with semi-metal property acted as non-noble metal co-catalyst. NiCo
S
co-catalyst was innovatively encapsulated in ZnIn
S
, which not only relieved the light shielding effect caused by the large loading amount of co-catalyst, but also supplied abundant active sites for H
evolution. The hierarchical hollow heterostructure of NiCo
S
/ZnIn
S
provided a highly efficient channel for charge transfer. Combining these advantages, NiCo
S
/ZnIn
S
composite demonstrated excellent photocatalytic activity. In the absence of sacrificial agent, the NiCo
S
/ZnIn
S
photocatalyst achieved a remarkable improved H
yield of 0.77 mmol g
h
under visible light irradiation (λ > 400 nm), which is 6.6 times greater than that of ZnIn
S
. Besides, NiCo
S
even exhibited better performance on the H
evolution improvement of ZnIn
S
than precious metal Pt. This work will offer novel insights into the reasonable design of non-noble metal photocatalysts with respectable activity for water splitting. |
---|---|
AbstractList | Exploring low-cost co-catalyst to ameliorate the photocatalytic activity of semiconductors sets a clear direction for solving energy crisis and achieving efficient solar-chemical energy conversion. In this work, a unique hierarchical hollow heterojunction was constructed by in-situ growing ZnIn
S
nanosheets on the porous NiCo
S
hollow prisms through a low temperature solvothermal method, in which NiCo
S
with semi-metal property acted as non-noble metal co-catalyst. NiCo
S
co-catalyst was innovatively encapsulated in ZnIn
S
, which not only relieved the light shielding effect caused by the large loading amount of co-catalyst, but also supplied abundant active sites for H
evolution. The hierarchical hollow heterostructure of NiCo
S
/ZnIn
S
provided a highly efficient channel for charge transfer. Combining these advantages, NiCo
S
/ZnIn
S
composite demonstrated excellent photocatalytic activity. In the absence of sacrificial agent, the NiCo
S
/ZnIn
S
photocatalyst achieved a remarkable improved H
yield of 0.77 mmol g
h
under visible light irradiation (λ > 400 nm), which is 6.6 times greater than that of ZnIn
S
. Besides, NiCo
S
even exhibited better performance on the H
evolution improvement of ZnIn
S
than precious metal Pt. This work will offer novel insights into the reasonable design of non-noble metal photocatalysts with respectable activity for water splitting. |
Author | Wu, Kai Zhao, Yulong Cai, Xiaoyan Mao, Liang Gu, Xiuquan Jiang, Renqian Zhu, Mingshan |
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Keywords | Hollow structure Hydrogen Charge separation Co-catalyst Photocatalyst |
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Title | Hierarchical NiCo 2 S 4 /ZnIn 2 S 4 heterostructured prisms: High-efficient photocatalysts for hydrogen production under visible-light |
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