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Jaramillo-Fierro X, Cuenca G. Enhancing Methylene Blue Removal through Adsorption and Photocatalysis-A Study on the GO/ZnTiO 3/TiO 2 Composite. Int J Mol Sci 2024; 25:4367. [PMID: 38673952 PMCID: PMC11049837 DOI: 10.3390/ijms25084367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
This study focuses on synthesizing and characterizing a graphene oxide/ZnTiO3/TiO2 (GO/ZTO/TO) composite to efficiently remove methylene blue (MB) from water, presenting a novel solution to address industrial dye pollution. GO and ZTO/TO were synthesized by the modified Hummers and sol-gel methods, respectively, while GO/ZTO/TO was prepared using a hydrothermal process. The structural and surface properties of the composite were characterized using various analytical techniques confirming the integration of the constituent materials and suitability for dye adsorption. The study revealed that GO/ZTO/TO exhibits an adsorption capacity of 78 mg g-1 for MB, with only a 15% reduction in adsorption efficiency until the fifth reuse cycle. Furthermore, the study suggests optimal adsorption near neutral pH and enhanced performance at elevated temperatures, indicating an endothermic reaction. The adsorption behavior fits the Langmuir isotherm, implying monolayer adsorption on homogeneous surfaces, and follows pseudo-second-order kinetics, highlighting chemical interactions at the surface as the rate-limiting step. The photocatalytic degradation of MB by GO/ZTO/TO follows pseudo-first-order kinetics, with a higher rate constant than that of GO alone, demonstrating the enhanced photocatalytic activity of the composite. In conclusion, GO/ZTO/TO emerges as a promising and sustainable approach for water purification, through an adsorption process and subsequent photocatalytic degradation.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Guisella Cuenca
- Ingeniería Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador;
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Photocatalytic performance of nano-ZnTiO3 decorated with Ag/AgCl nanoparticles for degradation of the organic dyes. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04428-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Faisal M, Jalalah M, Harraz FA, El-Toni AM, Labis JP, Al-Assiri M. A novel Ag/PANI/ZnTiO3 ternary nanocomposite as a highly efficient visible-light-driven photocatalyst. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117847] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Zhang J, Liu W, Gong W, Liu N, Jia Y, Ding D, Ning Z. Ultrasensitive Determination of Microcystin-Leucine-Arginine (MCLR) by an Electrochemiluminescence (ECL) Immunosensor with Graphene Nanosheets as a Scaffold for Cadmium-Selenide Quantum Dots (QDs). ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1875479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jingjing Zhang
- Beijing Municipal Institute of Labour Protection, Beijing, China
| | - Weijie Liu
- Beijing Municipal Institute of Labour Protection, Beijing, China
| | - Wei Gong
- Zhangbei Branch of Zhangjiakou Bureau of Ecology and Environment, Zhangjiakou, China
| | - Ning Liu
- Beijing Municipal Institute of Labour Protection, Beijing, China
| | - Yiting Jia
- Beijing Municipal Institute of Labour Protection, Beijing, China
| | - Ding Ding
- Beijing Municipal Institute of Labour Protection, Beijing, China
| | - Zhanwu Ning
- Beijing Municipal Institute of Labour Protection, Beijing, China
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Yin P, Tang Y, Zhang L, Wang J, Feng X, Dai J. Effect of nitric acid treatment on the final low-frequency microwave absorption performance of TiO2/ZnFe2O4/ZnTiO3 nanocomposite. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01639-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Trimesoyl Chloride-Melamine Copolymer-TiO2 Nanocomposites as High-Performance Visible-Light Photocatalysts for Volatile Organic Compound Degradation. Catalysts 2020. [DOI: 10.3390/catal10050575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Benzene is a typical volatile organic compound (VOC) and is found widely in industrial waste gases. In this study, trimesoyl chloride-melamine copolymer (TMP)-TiO2 nanocomposites with excellent photocatalytic efficiency in visible-light degradation of gas-phase benzene were synthesized via an in situ hydrothermal synthesis. The optimal conditions for TMP-TiO2 nanocomposite synthesis were determined by orthogonal experiments. The structural, physiochemical, and optoelectronic properties of the samples were studied by various analytical techniques. Ultraviolet-visible diffuse reflectance spectroscopy and surface photovoltage spectra showed that the positions of the light-absorbance edges of the TMP-TiO2 nanocomposites were sharply red-shifted to the visible region relative to those of unmodified TiO2. The most efficient TMP-TiO2 nanocomposite was used for photocatalytic oxidative degradation of gas-phase benzene (initial concentration 230 mg m−3) under visible-light irradiation (380–800 nm); the degradation rate was 100% within 180 min. Under the same reaction conditions, the degradation rates of unmodified TiO2 (hydrothermally synthesized TiO2) and commercial material Degussa P25 were 19% and 23.6%, respectively. This is because the Ti–O–N and Ti–O–C bonds in TMP-modified TiO2 reduce the band gap of TMP-TiO2. The amide bonds in the TMP decrease the TiO2 nanoparticle size and thus increased the specific surface area. The conjugated structures in the TMP provide abundant active sites for trapping photogenerated electrons and promote the separation and transfer of photogenerated electrons and holes.
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Chen F, Yu C, Wei L, Fan Q, Ma F, Zeng J, Yi J, Yang K, Ji H. Fabrication and characterization of ZnTiO 3/Zn 2Ti 3O 8/ZnO ternary photocatalyst for synergetic removal of aqueous organic pollutants and Cr( VI) ions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:136026. [PMID: 31841856 DOI: 10.1016/j.scitotenv.2019.136026] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/23/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
Highly efficient photocatalysts have great development prospects in wastewater treatment, especially in the degradation of organic pollutants and reduction of inorganic heavy metal ions. Herein, a Z-scheme ZnTiO3/Zn2Ti3O8/ZnO ternary photocatalyst was prepared by the solvothermal-calcination method and the influence of the content of tetrabutyl titanate precursor and different reaction temperature on the crystal phase structures, photoelectrochemical properties and photocatalytic activities of the samples were investigated. Due to its unique Z-scheme structure and suitable band gap position, which is favorable for the efficient migration and separation of photo-generated electrons and holes and the improvement of photocatalytic redox reaction capability, the samples show excellent performance for the degradation of organic pollutants and reduction of heavy metal Cr(VI) ions. Based on a series of characterization analyses, a possible Z-scheme photocatalytic mechanism is proposed. This work provides a simple preparation method for fabrication of multivariate heterojunction photocatalyst for degradation of organic pollutants and removal of heavy metal ions.
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Affiliation(s)
- Fanyun Chen
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Changlin Yu
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China.
| | - Longfu Wei
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China
| | - Qizhe Fan
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China
| | - Fei Ma
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China
| | - Julan Zeng
- Department of Chemistry, Changsha University of Science and Technology, Changsha 410114, Hunan, China
| | - Junhui Yi
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China
| | - Kai Yang
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China
| | - Hongbing Ji
- School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China.
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Tuning the photocatalytic properties of sol–gel-derived single, coupled, and alloyed ZnO–TiO2 nanoparticles. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03900-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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