Regulating Lewis Acidic Sites of 1T-2H MoS<sub>2</sub> Catalysts for Solar-Driven Photothermal Catalytic H<sub>2</sub> Production from Lignocellulosic Biomass.
basic_science · Level V
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- Record sourced from PubMed, PMID 38108571.
- Also identified by DOI 10.1021/acs.nanolett.3c03947.
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Abstract
Solar-driven photothermal catalytic H<sub>2</sub> production from lignocellulosic biomass was achieved by using 1T-2H MoS<sub>2</sub> with tunable Lewis acidic sites as catalysts in an alkaline aqueous solution, in which the number of Lewis acidic sites derived from the exposed Mo edges of MoS<sub>2</sub> was successfully regulated by both the formation of an edge-terminated 1T-2H phase structure and tunable layer number. Owing to the abundant Lewis acidic sites for the oxygenolysis of lignocellulosic biomass, the 1T-2H MoS<sub>2</sub> catalyst shows high photothermal catalytic lignocellulosic biomass-to-H<sub>2</sub> transformation performance in polar wood chips, bamboo, rice straw corncobs, and rice hull aqueous solutions, and the highest H<sub>2</sub> generation rate and solar-to-H<sub>2</sub> (STH) efficiency respectively achieves 3661 μmol·h<sup>-1</sup>·g<sup>-1</sup> and 0.18% in the polar wood chip system under 300 W Xe lamp illumination. This study provides a sustainable and cost-effective method for the direct transformation of renewable lignocellulosic biomass to H<sub>2</sub> fuel driven by solar energy.