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Eddy DR, Nur Sheha GA, Permana MD, Saito N, Takei T, Kumada N, Irkham, Rahayu I, Abe I, Sekine Y, Oyumi T, Izumi Y. Study on triphase of polymorphs TiO 2 (anatase/rutile/brookite) for boosting photocatalytic activity of metformin degradation. CHEMOSPHERE 2024; 351:141206. [PMID: 38219987 DOI: 10.1016/j.chemosphere.2024.141206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/16/2024]
Abstract
The elution of pharmaceutical products such as metformin at higher concentrations than the safe level in aquatic systems is a serious threat to human health and the ecosystem. Photocatalytic technology using TiO2 semiconductors potentially fixes this problem. This study aims to synthesize triphasic anatase-rutile-brookite TiO2 using ultrasound assisted sol-gel technique in the presence of acid and its application to photodegradation of metformin under UV light irradiation. Based on X-ray diffraction analysis, a TiO2 sample consisted of anatase (76%), rutile (7%), and brookite (17%) polymorph (A76R7B17) that was fully crystallized. Scanning electron microscopy (EM)-energy dispersive X-ray spectra results showed agglomerated triphasic A76R7B17 with irregular spherical clusters. Transmission EM results revealed that the crystal size of A76R7B17 was 4-14 nm. The Brunauer-Emmett-Teller analysis showed the sample's specific surface area of 149 m2 g-1. The degradation test of metformin demonstrated that the A76R7B17 exhibited a 75.4% degradation efficiency after 120 min under UV light irradiation, significantly higher than using biphasic and single-phase TiO2 photocatalysts. This difference could be attributed to the heterojunction effect of triphasic materials that effectively reduced electron-hole recombination rate as well as the combination of effective electron transfer from conduction band of brookite and anatase and the utilization of wider range of UV-visible light using rutile.
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Affiliation(s)
- Diana Rakhmawaty Eddy
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia.
| | - Geometry Amal Nur Sheha
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Muhamad Diki Permana
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia; Special Educational Program for Green Energy Conversion Science and Technology, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, Kofu, 400-8511, Japan; Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Norio Saito
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Takahiro Takei
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Nobuhiro Kumada
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Irkham
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Iman Rahayu
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Ikki Abe
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Yuta Sekine
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Tomoki Oyumi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Yasuo Izumi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
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González-García DM, Rodríguez-Lorenzo LM, Marcos-Fernández Á, Jiménez-Gallegos R, Sánchez-Téllez DA, Téllez-Jurado L. Tailoring/Tuning Properties of Polyester Urea-Urethanes through Hybridization with Titania Obtained Using the Sol-Gel Process. Polymers (Basel) 2023; 15:polym15102299. [PMID: 37242875 DOI: 10.3390/polym15102299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Hybrid materials have been studied because in these materials the properties of organic components, such as elasticity and biodegradability, could be combined with the properties of inorganic components, such as good biological response, thereby transforming them into a single material with improved properties. In this work, Class I hybrid materials based on polyester-urea-urethanes and titania were obtained using the modified sol-gel method. This was corroborated using the FT-IR and Raman techniques which highlighted the formation of hydrogen bonds and the presence of Ti-OH groups in the hybrid materials. In addition, the mechanical and thermal properties and degradability were measured using techniques, such as Vickers hardness, TGA, DSC, and hydrolytic degradation; these properties could be tailored according to hybridization between both organic and inorganic components. The results show that Vickers hardness increased by 20% in hybrid materials as compared to polymers; also, the surface hydrophilicity increases in the hybrid materials, improving their cell viability. Furthermore, cytotoxicity in vitro test was carried out using osteoblast cells for intended biomedical applications and they showed non-cytotoxic behavior.
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Affiliation(s)
- Dulce María González-García
- Department of Metallurgy and Materials Engineering, ESIQIE, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | | | - Ángel Marcos-Fernández
- Institute of Polymer Science and Technology (CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Rodrigo Jiménez-Gallegos
- Department of Metallurgy and Materials Engineering, ESIQIE, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | - Daniela Anahí Sánchez-Téllez
- Department of Metallurgy and Materials Engineering, ESIQIE, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | - Lucía Téllez-Jurado
- Department of Metallurgy and Materials Engineering, ESIQIE, Instituto Politécnico Nacional, Mexico City 07738, Mexico
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