Cotton fibres functionalized with plasmonic nanoparticles to promote the destruction of harmful molecules: an overview

Nanotechnology Reviews

article

Sami Boufi¹  Soraa Bouattour¹  Ana Maria Ferraria²  Luís Filipe Vieira Ferreira²  Ana Maria Botelho do Rego²  Mohamed M. Chehimi³  Manuel Rei Vilar⁴ 

[1] University of Sfax, Faculty of Science;CQFM-Centro de Química-Física Molecular and IN-Institute for Nanosciences and Nanotechnologies and IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa;Université Paris Est;Université de Paris

关键词: Cotton;    Photocatalysis;    TiO2;    Plasmonic effect;    Nanoparticles;   

DOI  :  10.1515/ntrev-2019-0058

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Self-decontaminating cotton fabrics were designed, produced and characterized aiming at the decomposition of harmful molecules namely chemical warfare agents (CWAs) by photocatalysis under day light or indoor illumination. This was achieved through the creation of a hybrid organic-inorganic nanostructured textile composed of a thin layer of TiO 2 nanoparticles (NPs) generated in situ and chemically immobilised on the cellulose chains of cotton fibres. TiO 2 NPs were converted into anatase by a hydrothermal procedure at low temperature around 100°C. The fabrics covered with TiO 2 nanoparticles were examined in terms of their chemical composition, morphology, crystallinity, ageing, robustness and photocatalytic properties. In the whole preparation of the photocatalytic fabrics, only environment-friendly solvents (water or alcohol) were used. One of the important achievements in this work was providing fabrics with suitable photocatalytic activity under visible light. This was reached through plasmonic photocatalysis by generating noble metal nanoparticles (Au, Ag) and/ or their halides (AgBr, AgCl) neighbouring or topping the TiO 2 NPs in the fabrics. The kinetics of degradation of the different systems were analysed and proved that the resulting fabrics could efficiently decompose, under visible light, organic dyes and dimethyl methylphosphonate (DMMP), a CWA simulant.

【 授权许可】

CC BY