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- Title
Utilizing TiO<sub>2</sub> photocatalysis and natural SiO<sub>2</sub> superhydrophilicity synergy to improve self-cleaning activity in cotton fabric.
- Authors
Sakti, Lintang Kumoro; Eddy, Diana Rakhmawaty; Permana, Muhamad Diki; Firdaus, M. Lutfi; Deawati, Yusi; Rahayu, Iman
- Abstract
This study aims to explore the function of hydrophilic features of natural SiO2 in supporting the TiO2 photocatalysis process for developing cotton fabric with high self-cleaning performance. SiO2 was produced by extracting natural materials such as Bengkulu beach sand with a high SiO2 content. The method used is dip-coating in its sol form with the help of ultrasonic waves to maximize the composite loading on the fabric. TiO2/SiO2 composite sols were synthesized at three distinct molar ratios, 2:1, 1:1, and 1:2. The self-cleaning activity was observed against methylene blue using the digital image colorimetry technique. SEM images reveal agglomerated TiO2 and SiO2 particles attached to the cotton fabric fibers with an average size of 14 nm. The FTIR investigations also demonstrate the existence of Ti - O - C and Si - O - C bonds, indicating TiO2 and SiO2 particles' interaction with cotton fabric fibers. Contact angle measurements show that cotton fabric with TiO2 increases hydrophilicity to 17.8 ∘ , whereas cotton fabric with SiO2 has a superhydrophilic surface (0 ∘ ). This observation is consistent with the FTIR data, in which the O - H stretching band develops following the addition of TiO2 sol and is more obvious in samples containing SiO2. The O–H stretching band appears after adding TiO2 sol and is more pronounced in samples containing SiO2 The characterization results showed that TiO2/SiO2 composites were successfully added to cotton fabrics. Cotton fabrics with a ratio of TiO2/SiO2 (1:1) showed the best self-cleaning activity against methylene blue, reaching 95.25%. Modified cotton fabrics also showed particle adhesion stability with a slight decrease in self-cleaning activity.
- Subjects
COTTON; PHOTOCATALYSIS; COTTON textiles; COTTON fibers; HIGH performance textiles; METHYLENE blue; ULTRASONIC waves
- Publication
Cellulose, 2024, Vol 31, Issue 9, p5885
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-024-05938-1