Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 2, Issue 1, Pages 82-85Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am900588s
Keywords
visible light; self-cleaning; UV-blocking; stain removal; wash fastness; Au/titania/silica; durability
Funding
- The Hong Kong Polytechnic University [PolyU G-YXOB]
- Hong Kong Research Institute of Textiles and Apparel [ITP/008/07TP]
- Research Grants Council of the Hong Kong SAR Government [PolyU 5324/08E]
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A facile process to prepare porous Au/TiO2/SiO2 nanocrystallites was presented. The novel nanocrystallites synthesized were characterized by FESEM, HRTEM, XRD, UV-blocking, and visible light self-cleaning properties. The ultraviolet protection factor of the sample results before and after 30 wash fastness tests have revealed that the treated samples are rateable according to the Australia/New Zealand Standard AS/NZS 4399: 1996. The durable visible light self-cleaning properties were initially conducted and achieved after 20 washes with 20 h simulated visible light irradiation. The Au/TiO2/SiO2 nanocomposites have shown more significant visible light self-cleaning performance than that of TiO2 treated only and represent a remarkable step forward in visible-light-driven self-cleaning treatment for flexible materials with a high potential for commercialization.
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