|
1
|
Zhang H, Wang L, Liu Z, Su Y, Du C. Construction of novel photocatalysts for efficient hydrogen evolution: The key role of natural halloysite nanotubes. J Colloid Interface Sci 2023; 650:1211-1224. [PMID: 37478738 DOI: 10.1016/j.jcis.2023.07.094] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/28/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Hydrogen (H2) evolution by photocatalytic water splitting is a potential strategy to solve worldwide energy shortage. Sulfide nanocatalysts showed great potential for H2 evolution, but suffered from low charge separation efficiency and easy agglomeration. In this work, ZnIn2S4 (ZIS) nanoflowers were anchored onto the surface of halloysite nanotubes (HNTs) modified by ethylenediaminetetraacetic acid (EDTA). Photocatalyst 3ZnIn2S4-HNTs/EDTA3 (3ZIS-HNTs/E3) displayed the optimum H2 evolution rate of 10.4 mmol·g-1·h-1, being 3.4 times as that of the original ZIS. Moreover, 3ZIS-HNTs/E3 presented satisfied property in the photocatalytic hydrogenation reaction of 4-nitrophenol to produce 4-aminophenol. HNTs as substrates not only hindered the growth and agglomeration of ZIS, but also induced more S vacancies in ZIS. The production of Schottky junctions between ZIS and Pt, the high utilization of light energy in tubular HNTs, and the trapping effect of EDTA for photogenerated h+ were all favorable for enhancing the catalytic property. The density functional theory (DFT) calculations showed that 3ZIS-HNTs/E3 with more S vacancies had the lowest adsorption energy and the most appropriate ΔGH* for H* to enhance the H2 evolution efficiency, which was consistent with the experimental catalytic results. This study contributes a novel thought for synthesizing composites on the basis of natural minerals for taking part in and enhancing the catalytic performance.
Collapse
Affiliation(s)
- Hao Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Le Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Zhiliang Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China
| | - Yiguo Su
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China.
| | - Chunfang Du
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, PR China.
| |
Collapse
|
|
2
|
Tan M, Yu C, Zeng H, Liu C, Dong W, Meng H, Su Y, Qiao L, Gao L, Lu Q, Bai Y. In situ fabrication of MIL-68(In)@ZnIn 2S 4 heterojunction for enhanced photocatalytic hydrogen production. NANOSCALE 2023; 15:2425-2434. [PMID: 36651383 DOI: 10.1039/d2nr07017k] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Metal-organic frameworks (MOFs), as a class of semiconductor-like materials, are widely used in photocatalysis. However, the limited visible light absorption and poor charge separation efficiency are the main challenges restricting their photocatalytic performance. Herein, the type II heterojunction MIL-68(In)@ZIS was successfully fabricated by in situ growth of ZnIn2S4 (ZIS) on the surface of a representative MOF, i.e. MIL-68(In). After composition optimization, MIL-68(In)-20@ZIS shows an extraordinary photocatalytic hydrogen production efficiency of 9.09 mmol g-1 h-1 and good photochemical stability, which far exceeds those of most photocatalysts. The hierarchical loose structure of MIL-68(In)-20@ZIS is conducive to the adsorption of reactants and mass transfer. Meanwhile, a large number of tight 2D contact interfaces significantly reduce the obstruction of charge transfer, paving the way for high-perform photocatalytic hydrogen evolution. The experimental results demonstrate that the MIL-68(In)@ZIS heterojunction achieves intensive photoresponse and effective charge separation and transfer benefiting from unique charge transport paths of a type II heterojunction. This study opens an avenue toward MOF-based heterojunctions for solar energy conversion.
Collapse
Affiliation(s)
- Mengxi Tan
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Chengye Yu
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Hua Zeng
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Chuanbao Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenjun Dong
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Huimin Meng
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Yanjing Su
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Lijie Qiao
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Lei Gao
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Qipeng Lu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yang Bai
- Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China
| |
Collapse
|
|
3
|
Li T, Jin Z. Rationally engineered avtive sites for efficient and durable hydrogen production over γ-graphyne assembly CuMoO4 S-scheme heterojunction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|