光催化
催化作用
产量(工程)
光化学
硫化镉
化学
硫化物
电子转移
氧化还原
选择性
能量转换效率
键裂
木质素
无机化学
材料科学
有机化学
冶金
光电子学
作者
Hyeonji Yoo,Minwoo Lee,Sung‐Gyu Lee,Jehee Lee,Soyoung Cho,Hangil Lee,Hyun Gil,Hyunsung Kim
标识
DOI:10.1021/acscatal.0c01915
摘要
Photocatalytic conversion of lignocellulose to valuable aromatics has significant potential for applications in biorefineries. The photocatalyst efficiency of lignocellulose conversion is typically limited by the buffering redox system in combination with oxidation and reduction of the photoexcited holes and electrons, respectively, which ensures high charge-recombination rates. Herein, Ag+-exchanged CdS is employed for easy photoexcited electron transfer to the oxidized intermediate, which results in a marked increase in the conversion yield with high product selectivity under mild reaction conditions without any additives. The conversion yield of the lignin model compound under 6 W blue LED illumination is nearly 100% and only cleaved aromatic compounds are formed. The efficient photoredox CdS catalyst obtained via photoexcited electron–hole coupled transfer derived from an appropriate Ag+ exchange affords a promising method for lignocellulose conversion with reduced energy consumption.
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