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Lian P, Qin A, Liu Z, Ma H, Liao L, Zhang K, Li N. Facile Synthesis to Porous TiO 2 Nanostructures at Low Temperature for Efficient Visible-Light Degradation of Tetracycline. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:943. [PMID: 38869568 PMCID: PMC11173820 DOI: 10.3390/nano14110943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/11/2024] [Accepted: 05/20/2024] [Indexed: 06/14/2024]
Abstract
In this study, nanoporous TiO2 with hierarchical micro/nanostructures was synthesized on a large scale by a facile one-step solvothermal method at a low temperature. A series of characterizations was performed and carried out on the as-prepared photocatalysts, which were applied to the degradation of the antibiotic tetracycline (TC). The results demonstrated that nanoporous TiO2 obtained at a solvothermal temperature of 100 °C had a spherical morphology with high crystallinity and a relatively large specific surface area, composed of a large number of nanospheres. The nanoporous TiO2 with hierarchical micro/nanostructures exhibited excellent photocatalytic degradation activity for TC under simulated sunlight. The degradation rate was close to 100% after 30 min of UV light irradiation, and reached 79% only after 60 min of visible light irradiation, which was much better than the photodegradation performance of commercial TiO2 (only 29%). Moreover, the possible intermediates formed during the photocatalytic degradation of TC were explored by the density functional theory calculations and HPLC-MS spectra. Furthermore, two possible degradation routes were proposed, which provided experimental and theoretical support for the photocatalytic degradation of TC. In this study, we provide a new approach for the hierarchical micro/nanostructure of nanoporous TiO2, which can be applied in industrial manufacturing fields.
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Affiliation(s)
- Peng Lian
- Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Materials Science & Engineering, Guilin University of Technology, Guilin 541004, China; (P.L.); (L.L.); (K.Z.)
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Z.L.); (H.M.)
| | - Aimiao Qin
- Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Materials Science & Engineering, Guilin University of Technology, Guilin 541004, China; (P.L.); (L.L.); (K.Z.)
| | - Zhisen Liu
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Z.L.); (H.M.)
| | - Hao Ma
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Z.L.); (H.M.)
| | - Lei Liao
- Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Materials Science & Engineering, Guilin University of Technology, Guilin 541004, China; (P.L.); (L.L.); (K.Z.)
| | - Kaiyou Zhang
- Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, College of Materials Science & Engineering, Guilin University of Technology, Guilin 541004, China; (P.L.); (L.L.); (K.Z.)
| | - Ning Li
- College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China; (Z.L.); (H.M.)
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Hydrothermal synthesis of MoS2-decorated silicon nanowires heterostructure with enhanced performance of photocatalytic activity under visible light. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Shi H, Chen Y, Lu J, Guo H, Qiu H, Li P. Visible light photocatalytic degradation of methylene blue by hydrated titanium dioxide nanoparticles incorporated within rice straw. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01656-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Abstract
In this study, a special core–shell structured wool-TiO2 (WT) hybrid composite powder also having TiO2 nanoparticles incorporated inside cortical cells was reported. The wool pallets were pulverized from wool fibers using vibration-assisted ball milling technique and the WT powders having mesopores and macropores were produced in hydrothermal process. Experimental results indicated that the infiltrated TiO2 nanoparticles were amorphous structure, while the coated TiO2 nanoparticles were anatase phase structure. The crystallized TiO2 nanoparticles were grafted with wool pallets by the N−Ti4+/S−Ti4+/O−Ti4+ bonds. The BET surface area was measured as 153.5 m2/g and the particle sizes were in the 600–3600 nm and 4000–6500 nm ranges. The main reactive radical species of the WT powders were holes, and •O2−, 1O2, and •OH were also involved in the photodegradation of MB dye under visible light irradiation. The experimental parameters for photodegradation of MB dye solution were optimized as follows: 0.25 g/L of WT powders was added in 40 mL of 3 mg/L MB dye solution containing 50 mL/L H2O2, which resulted in the increases of COD value of degraded MB dye solution up to 916.9 mg/L at 120 min. The WT powders could be used for repeatedly photodegradation of both anionic and cationic dyes.
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Hazarika KK, Hazarika D, Bharali P. Binary α‐Fe
2
O
3
–Co
3
O
4
nanostructures for advanced oxidation process: Role of synergy for enhanced catalysis. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Debashis Hazarika
- Department of Chemical Sciences Tezpur University Napaam Assam 784 028 India
| | - Pankaj Bharali
- Department of Chemical Sciences Tezpur University Napaam Assam 784 028 India
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