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- Title
TiO<sub>2</sub>/Loofah-Halloysite Bio-Hybrid Composites as Efficient Systems for VOCs Removal.
- Authors
Patamia, Vincenzo; Fiorenza, Roberto; Zagni, Chiara; Agustin-Salazar, Sarai; Scirè, Salvatore; Floresta, Giuseppe; Rescifina, Antonio
- Abstract
Volatile organic compounds (VOCs), recognized as hazardous air contaminants, prompt the exploration of sustainable air purification methods. Solar photocatalytic oxidation emerges as a promising solution, utilizing semiconductor photocatalysts like titanium dioxide (TiO2). However, the raw material crisis necessitates reduced TiO2 usage, leading to investigations into TiO2 modification techniques. The study introduces a novel approach by employing natural fibers, specifically loofah sponge, as a TiO2 support. This method aims to maintain photocatalytic activity while minimizing TiO2 content. The article explores using halloysite, a natural clay mineral, as a supportive material, enhancing mechanical strength and adsorption properties. The resulting TiO2/loofah-halloysite composites are evaluated for their efficacy in gas-phase photocatalytic oxidation of toluene and ethanol, chosen as representative VOCs. The conversion of toluene and ethanol on the composite was 88% and 39%, respectively, with high selectivity toward CO2. In addition to its high performance, the bio-composite was stable for several conversion cycles, keeping the conversion activity unchanged. The study contributes to developing green hybrid materials for VOC removal, showcasing potential applications across industries.
- Subjects
HALLOYSITE; VOLATILE organic compounds; AIR pollutants; PHOTOCATALYTIC oxidation; HYBRID materials; CLAY minerals
- Publication
Chemistry - A European Journal, 2024, Vol 30, Issue 22, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202304276