Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/210238
Title: EXPERIMENTAL STUDY ON PHOTOCATALYTIC SELF-CLEANING NANOCOATINGS
Authors: JACYNTHA TAN JIA MIN
Keywords: Jacyntha Tan Jia Min DBE
Issue Date: 26-Nov-2021
Citation: JACYNTHA TAN JIA MIN (2021-11-26). EXPERIMENTAL STUDY ON PHOTOCATALYTIC SELF-CLEANING NANOCOATINGS. ScholarBank@NUS Repository.
Abstract: The quality of indoor air is a prevailing concern as research has shown that people spend the majority of their time indoors which accentuates the need to provide clean air. Nanotechnology is a promising field in environment air purification and this dissertation examines the effects of self-cleaning nanocoatings through a series of experiments. The degradation of toluene, a common volatile organic compound (VOC), was investigated by using prepared nanocoating samples. A total of four samples containing varying amounts of TiO2 nanoparticles (S1 - 0.125g; S2 - 0.25g; S3 - 0.375g; S4 - 0.5g) were produced via a nanospray process. Results from the VOC degradation experiments demonstrated no significant toluene degradation under UV irradiation of three different lamps comprising wavelengths from 253.7 nm to 365 nm. Despite the adverse results, it established that the catalyst loading of 0.5g was insufficient to degrade toluene, henceforth allowing future studies to work with a catalyst loading higher than 0.5g to view the effects of toluene degradation. Nevertheless, a methylene blue (MB) decolourisation experiment was conducted to ascertain the performance of the nanocoating samples. The results indicated that the prepared samples were performing as evident from the successful decolourisation of MB which took 22 minutes and 25 minutes, for S3 and S4 respectively. Lastly, this dissertation revealed a performance gap of nanocoatings in which they displayed varying efficiencies in different mediums. As such, this prompts for a more extensive study of the photocatalytic properties of nanocoatings for future research.
URI: https://scholarbank.nus.edu.sg/handle/10635/210238
Appears in Collections:Bachelor's Theses

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