Solar‐Driven Lignocellulose‐to‐H 2 Conversion in Water using 2D‐2D MoS 2 /TiO 2 Photocatalysts
| Autor: | Qing-Yu Liu, Quan Cheng, Zhi-Kai Shen, Yong-Jun Yuan, Zhigang Zou, Zhen-Tao Yu, Pei Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Aqueous solution
Materials science Hydrogen Charge separation business.industry General Chemical Engineering Quantum yield chemistry.chemical_element Tio2 photocatalyst 02 engineering and technology Generation rate 010402 general chemistry 021001 nanoscience & nanotechnology Solar energy 01 natural sciences 0104 chemical sciences General Energy chemistry Chemical engineering Photocatalysis Environmental Chemistry General Materials Science 0210 nano-technology business |
| Zdroj: | ChemSusChem. 14:2860-2865 |
| ISSN: | 1864-564X 1864-5631 |
| DOI: | 10.1002/cssc.202100829 |
| Popis: | As an alternative strategy for H2 production under ambient conditions, solar-driven lignocellulose-to-H2 conversion provides a very attractive approach to store and utilize solar energy sustainably. Exploiting efficient photocatalyst for photocatalytic lignocellulose-to-H2 conversion is of huge significance and remains the key challenge for development of solar H2 generation from lignocellulose. Herein, 2D-2D MoS2 /TiO2 photocatalysts with large 2D nanojunction were constructed for photocatalytic lignocellulose-to-H2 conversion. In this smart structure, the 2D nanojunctions acted as efficient channel for charge transfer from TiO2 to MoS2 to improve charge separation efficiency and thus enhance photocatalytic lignocellulose-to-H2 conversion activity. The 2 % MoS2 /TiO2 photocatalyst showed the highest photocatalytic lignocellulose-to-H2 conversion performance with the maximal H2 generation rate of 201 and 21.4 μmol h-1 g-1 in α-cellulose and poplar wood chip aqueous solution, respectively. The apparent quantum yield at 380 nm reached 1.45 % for 2 % 2D-2D TiO2 /MoS2 photocatalyst in α-cellulose aqueous solution. This work highlights the importance of optimizing the interface structures of photocatalyst for solar-driven lignocellulose-to-H2 conversion. |
| Databáze: | OpenAIRE |
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