生物催化
紫外线
紫外线
紫外线辐射
纳米技术
化学
材料科学
化学工程
催化作用
光化学
反应机理
工程类
有机化学
光电子学
放射化学
作者
Huaying Zhong,Yi Zhang,Yangmin Gong,Chuyun Wan,Yufei Zhang,Mingming Zheng
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-12-20
卷期号:12 (5): 1857-1867
被引量:4
标识
DOI:10.1021/acssuschemeng.3c05438
摘要
Stimuli-responsive Pickering interfacial biocatalysis (PIB) platforms are highly desirable due to their convenient product extraction and catalyst recovery. Light-responsive PIB stabilized by immobilized biocatalyst particles, which serve as both emulsifiers and catalysts, have not attracted enough attention. Herein, a novel and effective ultraviolet/visible light-responsive PIB system is proposed to facilitate reversible emulsification/demulsification. The modified hollow mesoporous silica nanospheres (HMSS-N) with photochromic spiropyran (SP-COOH) were utilized as a light-responsive emulsifier and carrier of lipase CL (CL@HMSS-SP). The light-responsive performance and catalytic performance of the PIB system were also studied in detail. As a result, the O/W emulsion demulsification or emulsification could be easily accomplished by inducing ultraviolet or visible light to change the surface wettability of the smart emulsifiers. The system exhibited the highest catalytic activity in the model esterification reaction between n-hexanol acid and 1-hexanol that has been reported so far (a catalytic efficiency value of 80.9 mmol g–1 h–1), which is a 12.6-fold enhancement compared with the conventional free enzyme one-phase system. The robust system maintained high catalytic activity even after 10 cycles, averaging 148.2 g of product g–1 biocatalyst. Thus, the ultraviolet/visible light-responsive PIB gives insights into the biocatalytic synthesis of flavor esters with high efficiency and stable reusability and shows great potential for cleaner production in the future.
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