STUDY ON SEMICONDUCTOR PHOTOCATALYSIS FOR LIGNIN DEPOLYMERIZATION
Aromatic compounds can be obtained from lignin depolymerization by photocatalysis under mild conditions.Based on the structure of lignin,the C—O and C—C fracture mechanisms in lignin photocatalytic catalyzed by semiconductor,semiconductor modification methods such as doping,precious metal deposition,and construction of composite materials,which can improve photocatalyst stability and lignin depolymerization efficiency,are reviewed in this paper.The application of photocatalysis in the treatment of natural lignocellulosic raw materials,and the strategy of lignin degradation by external-field-coupled photocatalysis are summarized.Finally,the future research focus and development prospects of semiconductor in photocatalytic lignin depolymerization are prospected,which aimed to promote the technological innovation and industrialization of photocatalytic lignin depolymerization.
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