数字农科院2.0

Oxygen vacancy-rich TiO2 nanobelts buffed Ru clusters for green chemosynthesis of amino acid from lignocellulosic derivatives

文献类型： 外文期刊

作者： Dexiang Zhang;Fujun Lan;Xiaomei Zhou;Yu Shu;Fu Li;Qingxin Guan;Mo Qiu;Wei Li

作者机构：

关键词： Amino acids;Biorefinery;Oxygen vacancy-rich TiO2 nanobelts;Ru clusters;α-Hydroxy acids

期刊名称： Journal of Colloid and Interface Science

ISSN： 0021-9797

年卷期： 2025 年 700 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Amino acids are widely used in various applications, its production mainly relies on the fermentation of grain crops, and the chemosynthesis method from non-grain biomass still faces the challenge of low efficiency (<50 %). Herein, Ru clusters anchored on ultrathin TiO2 nanobelts (NBs) with abundant oxygen vacancies are fabricated and used to convert lignocellulose-derived α-hydroxy acids to α-amino acids. The Ru/TiO2 NBs achieved up to 80 % alanine yield from lignocellulose-derived lactic acid (LA). The characterization results reveal that the TiO2 NBs with abundant oxygen vacancies could anchor Ru clusters uniformly and enable the α-OH dehydrogenation occur spontaneously. Simultaneously, Ru clusters with appropriate particle size are beneficial for the activation of H2 and could promote the dehydrogenation from the α-OH and α-C(sp3)-H of LA. Furthermore, DFT simulations also indicate that further decrease the Ru cluster size (< 1 nm) will inhibit the adsorption of α-C(sp3)-H on cluster surface, thereby suppressing the removal of hydrogen atoms. This research provides a green and efficient chemical catalytic conversion idea for amino acid production from non-grain biomass.

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