Regulating Lewis Acidic Sites of 1T-2H MoS 2 Catalysts for Solar-Driven Photothermal Catalytic H 2 Production from Lignocellulosic Biomass.

Solar-driven photothermal catalytic H 2 production from lignocellulosic biomass was achieved by using 1T-2H MoS 2 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 2 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 2 catalyst shows high photothermal catalytic lignocellulosic biomass-to-H 2 transformation performance in polar wood chips, bamboo, rice straw corncobs, and rice hull aqueous solutions, and the highest H 2 generation rate and solar-to-H 2 (STH) efficiency respectively achieves 3661 μmol·h -1 ·g -1 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 2 fuel driven by solar energy.