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TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties

Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Indonesia

Received: 18 Jun 2021; Revised: 28 Jul 2021; Accepted: 26 Aug 2021; Published: 31 Aug 2021.
Open Access Copyright 2021 Jurnal Kimia Sains dan Aplikasi under http://creativecommons.org/licenses/by-sa/4.0.

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Abstract

In this paper, self-synthesized TiO2 nanoparticle was used as a coating material with the addition of polydimethylsiloxane (PDMS) on the surface of the glass and ceramic substrate via spray coating. The self-cleaning properties of the coating with photocatalytic activity mechanism were observed under irradiation of black lamp as well as surface wettability. The antimicrobial properties and the morphology under a scanning electron microscope were also investigated. The results showed that the coating exhibited self-cleaning properties, as demonstrated by the photocatalytic degradation of methylene blue up to 80% and wettability as a super hydrophilic layer with a water contact angle less than 10° for both glass and ceramic substrate. The coating also shows an antimicrobial property by extending the radius of microbial growth up to 67% compared to the uncoated sample. 3% TiO2 addition with 50% w/w PDMS is the optimum coating ratio for maximum photocatalytic activity, super hydrophilic, and antimicrobial properties.

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Keywords: antimicrobial; coating; self-cleaning; super hydrophilic; TiO2-PDMS
Funding: Universitas Diponegoro

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Section: Research Articles
Language : EN
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