钌
硫化镉
光催化
化学
生物量(生态学)
镉
硫化物
催化作用
氨基酸
有机化学
光化学
无机化学
生物化学
海洋学
地质学
作者
Wulin Li,Xiangfan Zhen,Bo Xu,Yue Yang,Yifei Zhang,Lingchao Cai,Zhujun Wang,Likun Pan,Bing Nan,Lina Li,Xue Lu Wang,Xiang Feng,Markus Antonietti,Zupeng Chen
标识
DOI:10.1002/anie.202320014
摘要
Amino acids are the building blocks of proteins and are widely used as important ingredients for other nitrogen-containing molecules. Here, we report the sustainable production of amino acids from biomass-derived hydroxy acids with high activity under visible-light irradiation and mild conditions, using atomic ruthenium-promoted cadmium sulfide (Ru1/CdS). On a metal basis, the optimized Ru1/CdS exhibits a maximal alanine formation rate of 26.0 molAla·gRu‑1·h‑1, which is 1.7 times and more than two orders of magnitude higher than that of its nanoparticle counterpart and the conventional thermocatalytic process, respectively. Integrated spectroscopic analysis and density functional theory calculations attribute the high performance of Ru1/CdS to the facilitated charge separation and O-H bond dissociation of the a-hydroxy group, here of lactic acid. The operando nuclear magnetic resonance further infers a unique "double activation" mechanism of both the CH-OH and CH3-CH-OH structures in lactic acid, which significantly accelerates its photocatalytic amination toward alanine.
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