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

第一作者： Zhang, Dexiang

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

作者机构：

关键词： Biorefinery; Amino acids; alpha-Hydroxy acids; Oxygen vacancy-rich TiO 2 nanobelts; Ru clusters

期刊名称：JOURNAL OF COLLOID AND INTERFACE SCIENCE （ 影响因子：9.7； 五年影响因子：8.9 ）

ISSN： 0021-9797

年卷期： 2025 年 700 卷

页码：

收录情况： SCI

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 alpha-hydroxy acids to alpha-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 alpha-OH dehydrogenation occur spontaneously. Simultaneously, Ru clusters with appropriate particle size are beneficial for the activation of H-2 and could promote the dehydrogenation from the alpha-OH and alpha-C(sp(3))-H of LA. Furthermore, DFT simulations also indicate that further decrease the Ru cluster size (< 1 nm) will inhibit the adsorption of alpha-C(sp(3))-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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