Abstract
Photocatalytic hydrogen (H 2 )production based on semiconductors is important to utilize solar light for clean energy and environment. Herein, we report a visible light responsive heterostructure, designed and constructed by molybdenum disulfide quantum dots (MoS 2 -QDs)in-situ seeds-directing growth and self-assemble of zinc indium sulfide (ZnIn 2 S 4 )nanosheet to ensure their full contact through a simple one-step solvothermal method for highly improved visible light H 2 production. The MoS 2 -QDs in-situ seeds-directing ZnIn 2 S 4 heterostructure not only builds heterojunctions between MoS 2 and ZnIn 2 S 4 to spatially separate the photogenerated electrons and holes, but also serves as the active sites trapping photogenerated electrons to facilitate H 2 evolution. As a result, MoS 2 -QDs/ZnIn 2 S 4 exhibits high photocatalytic activity for H 2 production, and the optimized 2 wt% MoS 2 -QDs/ZnIn 2 S 4 (2MoS 2 -QDs/ZnIn 2 S 4 )heterostructure exhibits the highest H 2 evolution rate of 7152 umol·h −1 ·g −1 under visible light, ∼9 times of pure ZnIn 2 S 4 . Our strategy here could shed some lights on developing noble-metal free heterostructures for highly efficient photocatalytic H 2 production.
| Original language | English |
|---|---|
| Pages (from-to) | 111-118 |
| Number of pages | 8 |
| Journal | Journal of colloid and interface science |
| Volume | 551 |
| DOIs | |
| Publication status | Published - 1 Sept 2019 |
Funding
Y. Li acknowledges Hubei Provincial Department of Education for the “Chutian Scholar” program. B. L. Su acknowledges the Chinese Central Government for an “Expert of the State” position in the Program of the “Thousand Talents”. This work is supported by National Natural Science Foundation of China ( U1663225 , 21671155 , 21805216 , 21805220 ), Natural Science Foundation of Hubei Province ( 2018CFB242 , 2018CFA054 ), Major programs of technical innovation in Hubei ( 2018AAA012 ) and Program for Changjiang Scholars Innovative Research Team in University ( IRT_15R52 ). Appendix A
| Funders | Funder number |
|---|---|
| Program for Changjiang Scholars Innovative Research Team in University | IRT_15R52 |
| National Natural Science Foundation of China | 21805216, U1663225, 21805220, 21671155 |
| National Natural Science Foundation of China | |
| Natural Science Foundation of Hubei Province | 2018AAA012, 2018CFA054, 2018CFB242 |
| Natural Science Foundation of Hubei Province |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
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SDG 9 Industry, Innovation, and Infrastructure
Keywords
- Heterostructure
- MoS
- Photocatalytic hydrogen production
- Quantum dots
- ZnIn S
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Physical Chemistry and characterization(PC2)
Wouters, J. (Manager), Aprile, C. (Manager) & Fusaro, L. (Manager)
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