Green Synthesis Of Tio2 – Ag Nanocomposites For Self-Cleaning And Antimicrobial Properties On Cotton Fabric
Loading...
Date
2018-05
Authors
S. Muniandy, Sunderishwary
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Green chemistry approach is an emerging interdisciplinary area that is expected to have wide ranging implications in all fields of science and technology. Although green chemistry is still in its infancy, it is already proving to be a useful tool in improving the performance of nanomaterial and generating worldwide interest. Titanium (IV) dioxide nanoparticles (TiO2 NPs), silver nanoparticles (AgNPs) and titanium dioxide – silver nanocomposites (TiO2 – NCs) have been successfully synthesised using hydrothermal green chemistry approaches. The synthesised TiO2 NPs and AgNPs materials were tested in the photocatalytic and antimicrobial studies respectively. A self‑doped (Ti3+) mesoporous anatase TiO2 NPs were synthesised using simple precipitation method under low temperature and their significant role in photocatlytic activities was revealed. The surface area of TiO2 NPs is 87.2 m2 g-1 and the average pore size of mesopore is 8.7 nm, meanwhile for macropores are 50 to 70.2 nm. The presence of meso and macropores enhance the photodegradation process of methylene blue (MB) solution under sunlight. The reaction parameters of photocatalytic activities by the TiO2 NPs synthesised using 0.01 mol of titanium isopropoxide (TTIP) under basic condition showed that 0.1 g of TiO2 NPs worked effectively in the photodegradation of cationic dye (MB). Synthesised TiO2 NPs maintained high photocatalytic activities for at least ten cycles of extended usage without losing their efficiency. Uniform silver nanoparticles (AgNPs) with crystallite size 19.3 nm were successfully synthesised using facile hydrothermal method.
Description
Keywords
Green chemistry approach is an emerging interdisciplinary area , wide ranging implications in all fields of science and technology