A new method for surface sulfate modification to promote synthesis of photocatalytic polyols is proposed

Recently, the team of researcher Wang Feng from the Bioenergy Chemicals Research Group (DNL0603) of our institute cooperated with the team of specially-appointed researcher Wang Min from Dalian University of Technology to make new progress in the research of preparing H ₂ and C ₁ products from photocatalytic biomass polyols , using surface sulfuric acid The root-modified CdS catalyst ([SO ₄ ]/CdS) realizes the conversion of biomass polyols into synthesis gas under visible light at room temperature
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The production of synthesis gas from biomass is mainly through a high temperature (400 to 700°C) gasification method, which has harsh reaction conditions
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Therefore, the use of photocatalytic methods to realize the synthesis gas process from biomass under normal temperature conditions has important prospects

In this work, the team used plasma oxidation to prepare [SO ₄ ]/CdS catalysts with sulfate radicals on the surface .
[SO ₄ ] can act as a proton acceptor, effectively shortening the distance of proton transmission and promoting the process of proton-coupled electron transfer ( PCET)
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In the photocatalytic process of producing synthesis gas from biomass polyols by the catalyst, the production rates of carbon monoxide and hydrogen are 9 times and 3 times that of CdS, respectively

The related results were published in J.
Am.
Chem.
Soc.
entitled "Surface Sulfate Ion on CdS Catalyst Enhances Syngas Generation from Biopolyols"
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This work was funded by the National Natural Science Foundation of China, the Key R&D Program of the Ministry of Science and Technology, and the "Essence and Regulation of Energy Chemical Conversion" project of the Chinese Academy of Sciences Class B pilot project