Molecular assembly of carbon nitride-based composite membranes for photocatalytic sterilization and wound healing

被引：12

作者：

Peng, Xiaoxiao ^{[1
]}

Ma, Jin ^{[1
]}

Zhou, Zhixin ^{[1
]}

Yang, Hong ^{[1
]}

Chen, Jingjing ^{[1
]}

Chen, Ran ^{[1
]}

Wu, Kaiqing ^{[1
]}

Xi, Guangcheng ^{[3
]}

Liu, Songqin ^{[1
]}

Shen, Yanfei ^{[2
]}

Zhang, Yuanjian ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Jiangsu Engn Lab Smart Carbon Rich Mat & Device, Jiangsu Prov Hitech Key Lab Biomed Res, Nanjing 211189, Peoples R China

[2] Southeast Univ, Med Sch, Nanjing 210009, Peoples R China

[3] Chinese Acad Inspect & Quarantine, Inst Ind & Consumer Prod Safety, Beijing 100176, Peoples R China

来源：

CHEMICAL SCIENCE | 2023年 / 14卷 / 16期

基金：

中国国家自然科学基金;

关键词：

NANOSHEETS; ACID; NANOTUBES; G-C3N4; FUNCTIONALIZATION; DISSOLUTION; GRAPHENE; CRYSTAL; MELEM; PHASE;

D O I：

10.1039/d3sc00642e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polymeric carbon nitride (pCN) has attracted increasing interest as a metal-free photocatalyst because of its high efficiency in reactive oxygen species (ROS) generation. However, due to poor solubility, compounding pCN at the molecular level into more advanced nanocomposites remains a challenge. Herein, we report the dissolution of pCN in polyphosphoric acid (PPA) for the first time and fluid-phase assembly with carbon nanotubes (CNTs) into a flexible free-standing membrane. Mechanism and generality studies disclosed that the coordination of the acidity, viscosity, and adsorption energy of the solvents led to the successful dissolution of pCN. Interestingly, the pCN/CNTs molecular composite membrane exhibited not only superior mechanical properties and cycling performance as a result of strengthened pi-pi interfacial interaction, but also outstanding inactivation of E. coli and S. aureus in sterilization and wound healing for laboratory mice via photogenerated oxygen radicals. It would open a new era of pCN for biomedical applications in molecular composite membranes, beyond the traditional solar fuel applications in powders.

引用

页码：4319 / 4327

页数：9

共 93 条

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