Photocatalytic Conversion of Biomass and Nitrate into Glycine

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-11-28 DOI:10.1021/acscatal.4c05235

Peifeng Li, Biaobiao Zhang

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Abstract

Biomass is a renewable carbon source that comes from plants, containing chemical energy from the sun. Nitrate, which is a N-containing feedstock with a lower dissociation energy, has a rich distribution in wastewater. Renewable biomass and nitrate waste can be converted into valuable C–N products through photocatalytic processes, which is becoming promising but challenging in the production of different kinds of chemicals and fuels. Herein, we report the photoconversion of biomass and nitrate into glycine with a 765 μmol g_cat^–1 h^–1 production rate and 15.3% yield over a Ba²⁺-modified TiO₂ catalyst. The process cascades multiple reactions containing the photoreforming of biomass to glycol, nitrate reduction to NH₃, and finally, C–N coupling to glycine, among which nitrate ions play a dominant role in the selective cleavage and oxidation of biomass. Surprisingly, after hydrolysis pretreatment, biopolyols or sugars and even raw wood sawdust could react with nitrate to generate glycine. This study provides an effective catalytic system to produce glycine from renewable biomass and nitrate waste under mild conditions.

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.