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Self-Cleaning Limestone Paint Modified by Nanoparticles TiO2 Synthesized from TiCl3 as Precursors and PEG6000 as Dispersant

1Engineering Physics Department, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

2Chemical Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

Received: 21 Nov 2016; Revised: 10 Sep 2017; Accepted: 11 Sep 2017; Available online: 27 Oct 2017; Published: 1 Dec 2017.
Editor(s): Istadi Istadi, Yuly Kusumawati
Open Access Copyright (c) 2017 by Authors, Published by BCREC Group under http://creativecommons.org/licenses/by-sa/4.0.
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Abstract

Limestone is commonly used for wall painting, but it is easy to be dirty. In this study, a self-cleaning limestone paint was synthesized by modifying dispersant and TiO2 nanoparticles. The TiO2 that prepared by TiCl3 were functionalized with PEG6000 as a surface activating agent. The paint achieved highest impurity degradation of 83.11 % for the mass ratio of TiO2 and PEG6000 (MRTP) of 1: 6, in which TiO2 average size distribution was 75.81 µm2, the particle surface area of TiO2 was 2,544 µm2, and the smallest contact angle was 7°. It was found that the dispersant (PEG6000) significantly improved the self-cleaning ability of limestone paint. The surface tension reduction from PEG6000-modified prevented the agglomeration process of TiO2 and suggests that the limestone paint a good self-cleaning coating for wall painting. 

Keywords: TiO2 photocatalyst; PEG6000 dispersant; limestone; self cleaning

Article Metrics:

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