Dye-sensitized photoelectrochemical cell (DSPEC) is a device traditionally to perform water splitting or CO2 reduction coupled to water oxidation for the formation of solar fuels. Alternatively, lignin conversion to fuels or value-added chemicals represents a promising substitute for petroleum or other fossilized carbon sources. Lignin is one of the most abundant renewable sources in nature. Here, our research group is to explore a new approach for the selective, photocatalytic oxidation of benzylic alcohols in lignin using the DSPEC containing the co-adsorption of hydrogen transfer mediator and a polypyridyl Ru photocatalyst containing dicarboxylic acid at a photoanode. The mesoporous TiO2 based photoanode, which incorporates a surface co-bound ruthenium(II) tris-bipyridine photocatalyst and hydrogen atom transfer (HAT), performed solar-driven photocatalytic oxidation of the lignin substrates. This work provides a novel approach to explore the chemoselective oxidation of the 2o benzyl alcohol derivatives in the presence of primary alcohols using a co-adsorption method of a photocatalyst and HAT in DSPEC under mild conditions.

Photocatalytic oxidation in lignin using co-adsorbed a photocatalyst and hydrogen atom transfer co-catalyst on mesoporous TiO2

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.