Carboxymethyl chitosan coating to block photocatalytic activity of TiO2 nanoparticles

Xianqiong Chen, Yuyang Liu, Haifeng Shi, Xiaowen Wang, Kaihong Qi, Xiang Zhou, John Haozhong Xin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

In order to lower photocatalytic degradation of TiO2on skin and textiles, carboxymethyl chitosan (CMCH) was used to coat TiO2nanoparticles. The polymer (CMCH) not only acted as the blocking agent of photocatalytic activity, but also dispersed TiO2nanoparticles better to prohibit them from congregation by anchoring them. The structure of as-prepared nanocomposites was characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The TiO2/CMCH nanocomposites were coated onto cotton fabrics by a dip-pad—drycure process. The treated cotton fabrics demonstrated lower photocatalytic activity in comparison to cotton fabrics treated by pure TiO2in a typical photocatalytic test. The treated cotton showed a combination of bactericidal activity of TiO2and CMCH, and excellent protection against UV radiation.
Original languageEnglish
Pages (from-to)2214-2222
Number of pages9
JournalTextile Research Journal
Volume80
Issue number20
DOIs
Publication statusPublished - 1 Jan 2010

Keywords

  • Bactericidal
  • carboxymethyl chitosan
  • cotton
  • nanoparticles
  • photocatalytic
  • TiO2
  • UV-blocking

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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