Enhancing 1O2 Production with Biomimetic Pt Catalysts through Electronic Structure Modification
文献类型： 外文期刊
作者： Liu, Zhenjiang 1 ; Qin, Jie 1 ; Chen, Hailong 1 ; Xue, Yuan 2 ; Wang, Zedong 1 ; Shen, Bingqing 1 ; Li, Ming 1 ; Guo, Yanguo 1 ; Li, Longhua 1 ; Li, Yuanbo 4 ; Zhu, Chengzhou 3 ;
作者机构： 1.Jiangsu Univ, Sch Environm & Safety Engn, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
2.Guizhou Tobacco Co, Anshun City Co, Anshun 561000, Peoples R China
3.Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol &, State Key Lab Green Pesticide, Wuhan 430079, Peoples R China
4.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
关键词： biomimetic catalysts; hydrogen peroxide; electronicstructure modification; singlet oxygen; bacterialinhibition
期刊名称：NANO LETTERS （ 影响因子：9.1； 五年影响因子：9.9 ）
ISSN： 1530-6984
年卷期： 2025 年 25 卷 22 期
页码：
收录情况： SCI
摘要： Singlet oxygen (1O2) is an excellent reactive oxygen species in the biomedical disinfection field; however, efficient and selective generation of 1O2 remains challenging. Herein, we design bioinspired Pt@UiO-66-X catalysts (X = -NH2, -H, -Br), with Pt nanoparticles as active centers and metal-organic framework (MOF) nanocavities as biomimetic binding pockets, to form a tailored electronic microenvironment for enhancing 1O2 generation. The results demonstrate that the electron-withdrawing functionalized Pt@UiO-66-Br can significantly improve the production efficiency of 1O2, which is 1.5 and 2.5 times higher than those of Pt@UiO-66 and Pt@UiO-66-NH2, respectively. Ab initio calculations reveal that electron-withdrawing functional groups can reduce the local electron density of Pt, thereby leading to a decrease in antibonding-orbital occupancy in Pt-Oads and subsequently facilitating the formation of *OO. Importantly, the Pt@UiO-66-Br catalyst shows good antibacterial properties both in vitro and in vivo. This work provides a promising prospect for the rational design of high-performance biomimetic catalysts for antibacterial application.
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