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Rashid R, Shafiq I, Gilani MRHS, Maaz M, Akhter P, Hussain M, Jeong KE, Kwon EE, Bae S, Park YK. Advancements in TiO 2-based photocatalysis for environmental remediation: Strategies for enhancing visible-light-driven activity. CHEMOSPHERE 2024; 349:140703. [PMID: 37992908 DOI: 10.1016/j.chemosphere.2023.140703] [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: 07/28/2023] [Revised: 10/21/2023] [Accepted: 11/11/2023] [Indexed: 11/24/2023]
Abstract
Researchers have focused on efficient techniques for degrading hazardous organic pollutants due to their negative impacts on ecological systems, necessitating immediate remediation. Specifically, TiO2-based photocatalysts, a wide-bandgap semiconductor material, have been extensively studied for their application in environmental remediation. However, the extensive band gap energy and speedy reattachment of electron (e-) and hole (h+) pairs in bare TiO2 are considered major disadvantages for photocatalysis. This review extensively focuses on the combination of semiconducting photocatalysts for commercial outcomes to develop efficient heterojunctions with high photocatalytic activity by minimizing the e-/h+ recombination rate. The improved activity of these heterojunctions is due to their greater surface area, rich active sites, narrow band gap, and high light-harvesting tendency. In this context, strategies for increasing visible light activity, including doping with metals and non-metals, surface modifications, morphology control, composite formation, heterojunction formation, bandgap engineering, surface plasmon resonance, and optimizing reaction conditions are discussed. Furthermore, this review critically assesses the latest developments in TiO2 photocatalysts for the efficient decomposition of various organic contaminants from wastewater, such as pharmaceutical waste, dyes, pesticides, aromatic hydrocarbons, and halo compounds. This review implies that doping is an effective, economical, and simple process for TiO2 nanostructures and that a heterogeneous photocatalytic mechanism is an eco-friendly substitute for the removal of various pollutants. This review provides valuable insights for researchers involved in the development of efficient photocatalysts for environmental remediation.
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Affiliation(s)
- Ruhma Rashid
- Institute of Chemical Science, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Iqrash Shafiq
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan
| | | | - Muhammad Maaz
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan
| | - Parveen Akhter
- Department of Chemistry, The University of Lahore, 1-km Defence Road, Off Raiwind Road, Lahore, Pakistan
| | - Murid Hussain
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan.
| | - Kwang-Eun Jeong
- Chemical & Process Technology Division, Korea Research Institute of Chemical Technology (KRICT), P.O. Box 107, 141 Gajeong-ro, Yuseong, Daejeon, 34114, Republic of Korea
| | - Eilhann E Kwon
- Department of Earth Resources & Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Sungjun Bae
- Department of Civil & Environmental Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea.
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Hazaraimi MH, Goh PS, Lau WJ, Ismail AF, Wu Z, Subramaniam MN, Lim JW, Kanakaraju D. The state-of-the-art development of photocatalysts for the degradation of persistent herbicides in wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:156975. [PMID: 35764157 DOI: 10.1016/j.scitotenv.2022.156975] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/15/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Herbicides are one of the most recurring pollutants in the aquatic system due to their widespread usage in the agriculture sector for weed control. Semiconductor-based photocatalysts have gained recognition due to their ability to degrade and mineralize pollutants into harmless by-products completely. Lately, many studies have been done to design photocatalysts with efficient separation of photogenerated charge carriers and enhanced light absorption. Photocatalyst engineering through doping with metal and non-metal elements and the formation of heterojunction are proven effective for minimizing the recombination of electron-hole pairs and enlarging the absorption in the visible light region. This review focuses on discussing and evaluating the recent progress in the types of photocatalysts and their performance in the remediation of herbicides in wastewater. The development of innovative hybrid technologies is also highlighted. The limitations and challenges of photocatalysis technology in the present literature have been identified, and future studies are recommended.
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Affiliation(s)
- M H Hazaraimi
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - P S Goh
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
| | - W J Lau
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - A F Ismail
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Z Wu
- Aston Institute of Materials Research, School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK
| | - M N Subramaniam
- Aston Institute of Materials Research, School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK
| | - J W Lim
- HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Seri Iskandar, Perak Darul Ridzuan 32610, Malaysia
| | - D Kanakaraju
- Faculty of Resource and Science Technology, Universiti Malaysia, Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia
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Martínez JSB, González AS, López MC, Ayala FE, Mijangos JC, de Jesús Treviño Reséndez J, Vöng YM, Rocha JM, Bustos EB. Electrochemical degradation of amoxicillin in acidic aqueous medium using TiO 2-based electrodes modified by oxides of transition metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42130-42145. [PMID: 34255261 DOI: 10.1007/s11356-021-15315-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
One of the most widely used antibiotics is amoxicillin (AMX), which is the most widely used in humans and animals, but it is discharged metabolically due to its indigestibility. Conventional biological and physicochemical methods for removing AMX from water are not enough to mineralize it; it is only concentrated and transferred to produce new residues that require further processing to remove the new residues. In this research, naked and modified surfaces with TiO2 nanotubes (TiO2,nt) electrophoretically modified with PbO2, IrO2, RuO2, and Ta2O5 were used to evaluate their efficiency in the electrochemical degradation of AMX in acid media (0.1 mol L-1 H2SO4). After their comparison, Pb-Ta 50:50|TiO2,nt|Ti showed the highest removal efficiency of AMX (44.71%) with the lowest specific energy consumption (8.69 ± 0.78 kWh Kg COD-1) and the average instant current efficiency of 26.67 ± 9.19%, in comparison with the others naked and modified surfaces of TiO2,nt∣Ti.
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Affiliation(s)
- Jaxiry Shamara Barroso Martínez
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Antonia Sandoval González
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Mónica Cerro López
- Universidad de las Américas de Puebla, Ex hacienda Santa Catarina Mártir s/n, 72810, San Andrés Cholula, Puebla, Mexico
| | - Fabricio Espejel Ayala
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Jesús Cárdenas Mijangos
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - José de Jesús Treviño Reséndez
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Yunny Meas Vöng
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Juan Manríquez Rocha
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico
| | - Erika Bustos Bustos
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Parque Tecnológico Querétaro s/n, 76703, Sanfandila, Pedro Escobedo, Querétaro, Mexico.
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Bustos E, Sandoval-González A, Martínez-Sánchez C. Detection and Treatment of Persistent Pollutants in Water: General Review of Pharmaceutical Products. ChemElectroChem 2022. [DOI: 10.1002/celc.202200188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Erika Bustos
- Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Centro de Investigación y Desarrollo Tecnológico en Electroq76703México 76703 Pedro Escobedo MEXICO
| | - Antonia Sandoval-González
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC: Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Parque Tecnológico Querétaro s/nSanfandila 76703 Pedro Escobedo MEXICO
| | - Carolina Martínez-Sánchez
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC: Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Parque Tecnológico Querétaro s/nSanfandila 76703 Pedro Escobedo MEXICO
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Degradation of Tetracycline on SiO2-TiO2-C Aerogel Photocatalysts under Visible Light. MATERIALS 2022; 15:ma15051963. [PMID: 35269195 PMCID: PMC8911664 DOI: 10.3390/ma15051963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023]
Abstract
SiO2-TiO2-C aerogel photocatalysts with different carbon loadings were synthesized by using sol-gel chemistry. The anatase crystal and nonmetal carbon dopant were introduced during the sol preparation and formed by hydrothermal treatment, which can simultaneously enhance the adsorption ability and visible light photo-activity. A high surface area (759 g cm−3) SiO2-TiO2-C aerogel composite can remove up to 80% tetracycline hydrochloride within 180 min under visible light. The characterization of the gel structures shows that the homogeneous dispersion of O, Si, Ti and C in the skeleton, indicating that hydrothermal synthesis could provide a very feasible way for the preparation of composite materials. n(C):n(Ti) molar ratio of 3.5 gives the best catalytic performance of the hybrid aerogel, and the cyclic test still confirms over 60% degradation activity after seven use cycles. All catalysis reaction followed the pseudo-first-order rate reaction with high correlation coefficient. The electrons and holes in the compound could be effectively restrained with doping proper amount of C, and ESR results indicate that the oxidation process was dominated by the hydroxyl radical (•OH) and superoxide radical (•O2−) generated in the system.
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Khan MS, Shah JA, Riaz N, Butt TA, Khan AJ, Khalifa W, Gasmi HH, Latifee ER, Arshad M, Al-Naghi AAA, Ul-Hamid A, Arshad M, Bilal M. Synthesis and Characterization of Fe-TiO 2 Nanomaterial: Performance Evaluation for RB5 Decolorization and In Vitro Antibacterial Studies. NANOMATERIALS 2021; 11:nano11020436. [PMID: 33572142 PMCID: PMC7915575 DOI: 10.3390/nano11020436] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 12/04/2022]
Abstract
A photocatalytic system for decolorization of double azo reactive black 5 (RB5) dye and water disinfection of E. coli was developed. Sol gel method was employed for the synthesis of Fe-TiO2 photocatalysts and were characterized using thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and Brunauer–Emmett–Teller (BET) analysis. Results showed that photocatalytic efficiency was greatly influenced by 0.1 weight percent iron loading and 300 °C calcination temperature. The optimized reaction parameters were found to be the ambient temperature, working solution pH 6.2 and 1 mg g−1 dose to completely decolorize RB5. The isotherm studies showed that RB5 adsorption by Fe-TiO2 followed the Langmuir isotherm with maximum adsorption capacity of 42.7 mg g−1 and Kads 0.0079 L mg−1. Under illumination, the modified photocatalytic material had higher decolorization efficiency as compared to unmodified photocatalyst. Kinetic studies of the modified material under visible light irradiation indicated the reaction followed the pseudo-first-order kinetics. The illumination reaction followed the Langmuir-Hinshelwood (L-H) model as the rate of dye decolorization increased with an incremental increase in dye concentration. The L-H constant Kc was 1.5542 mg L–1∙h–1 while Kads was found 0.1317 L mg–1. The best photocatalyst showed prominent percent reduction of E. coli in 120 min. Finally, 0.1Fe-TiO2-300 could be an efficient photocatalyst and can provide a composite solution for RB5 decolorization and bacterial strain inhibition.
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Affiliation(s)
- Muhammad Saqib Khan
- Department of Environmental Sciences, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan; (M.S.K.); (J.A.S.); (N.R.), (A.J.K.)
| | - Jehanzeb Ali Shah
- Department of Environmental Sciences, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan; (M.S.K.); (J.A.S.); (N.R.), (A.J.K.)
| | - Nadia Riaz
- Department of Environmental Sciences, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan; (M.S.K.); (J.A.S.); (N.R.), (A.J.K.)
| | - Tayyab Ashfaq Butt
- Department of Civil Engineering, University of Hail, Hail 55476, Saudi Arabia; (T.A.B.); (W.K.); (H.H.G.); (E.R.L.); (A.A.A.A.-N.)
| | - Asim Jahangir Khan
- Department of Environmental Sciences, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan; (M.S.K.); (J.A.S.); (N.R.), (A.J.K.)
| | - Walid Khalifa
- Department of Civil Engineering, University of Hail, Hail 55476, Saudi Arabia; (T.A.B.); (W.K.); (H.H.G.); (E.R.L.); (A.A.A.A.-N.)
| | - Hatem Hassin Gasmi
- Department of Civil Engineering, University of Hail, Hail 55476, Saudi Arabia; (T.A.B.); (W.K.); (H.H.G.); (E.R.L.); (A.A.A.A.-N.)
| | - Enamur Rahim Latifee
- Department of Civil Engineering, University of Hail, Hail 55476, Saudi Arabia; (T.A.B.); (W.K.); (H.H.G.); (E.R.L.); (A.A.A.A.-N.)
| | - Muhammad Arshad
- National Center for Physics, Nanosciences and Technology Department, Quaid-i-Azam University Islamabad Campus, Islamabad 44000, Pakistan;
| | - Ahmed Abdullah Alawi Al-Naghi
- Department of Civil Engineering, University of Hail, Hail 55476, Saudi Arabia; (T.A.B.); (W.K.); (H.H.G.); (E.R.L.); (A.A.A.A.-N.)
| | - Anwar Ul-Hamid
- Centre for Engineering Research, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Muhammad Arshad
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan
- Correspondence: (M.A.); (M.B.)
| | - Muhammad Bilal
- Department of Environmental Sciences, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan; (M.S.K.); (J.A.S.); (N.R.), (A.J.K.)
- Correspondence: (M.A.); (M.B.)
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