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Ahtasham Iqbal M, Akram S, Khalid S, Lal B, Hassan SU, Ashraf R, Kezembayeva G, Mushtaq M, Chinibayeva N, Hosseini-Bandegharaei A. Advanced photocatalysis as a viable and sustainable wastewater treatment process: A comprehensive review. ENVIRONMENTAL RESEARCH 2024; 253:118947. [PMID: 38744372 DOI: 10.1016/j.envres.2024.118947] [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: 10/31/2023] [Revised: 03/14/2024] [Accepted: 04/14/2024] [Indexed: 05/16/2024]
Abstract
In our era, water pollution not only poses a serious threat to human, animal, and biotic life but also causes serious damage to infrastructure and the ecosystem. A set of physical, chemical, and biological technologies have been exploited to decontaminate and/or disinfect water pollutants, toxins, microbes, and contaminants, but none of these could be ranked as sustainable and scalable wastewater technology. The photocatalytic process can harmonize the sunlight to degrade certain toxins, chemicals, microbes, and antibiotics, present in water. For example, transition metal oxides (ZnO, SnO2, TiO2, etc.), when integrated into an organic framework of graphene or nitrides, can bring about more than 90% removal of dyes, microbial load, pesticides, and antibiotics. Similarly, a modified network of graphitic carbon nitride can completely decontaminate petrochemicals. The present review will primarily highlight the mechanistic aspects for the removal and/or degradation of highly concerned contaminants, factors affecting photocatalysis, engineering designs of photoreactors, and pros and cons of various wastewater treatment technologies already in practice. The photocatalytic reactor can be a more viable and sustainable wastewater treatment opportunity. We hope the researcher will find a handful of information regarding the advanced oxidation process accomplished via photocatalysis and the benefits associated with the photocatalytic-type degradation of water pollutants and contaminants.
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Affiliation(s)
| | - Sumia Akram
- Division of Science and Technology, University of Education Lahore, Pakistan
| | - Shahreen Khalid
- Department of Chemistry, Government College University Lahore, Pakistan
| | - Basant Lal
- Department of Chemistry, Institute of Applied Science and Humanities, GLA University, Mathura, 281406, India
| | - Sohaib Ul Hassan
- Department of Irrigation & Drainage, University of Agriculture, Faisalabad, Pakistan
| | - Rizwan Ashraf
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Gulmira Kezembayeva
- Mining and Metallurgical Institute Named After O.A. Baikonurov, Department Chemical Processes and Industrial Ecology, Satbayev University, Almaty, Kazakhstan
| | - Muhammad Mushtaq
- Department of Chemistry, Government College University Lahore, Pakistan.
| | | | - Ahmad Hosseini-Bandegharaei
- Faculty of Chemistry, Semnan University, Semnan, Iran; Centre of Research Impact and Outcome, Chitkara University, Rajpura-140417, Punjab, India; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai-602105, Tamil Nadu, India.
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2
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Sayed MM, Aboraia AM, Kasem YA, Elew NN, Ismail YAM, Aly KI. The enhanced photocatalytic performance of CPAA doping with different concentrations of Titanium oxide nanocomposite against MB dyes under simulated sunlight irradiations. Sci Rep 2024; 14:12768. [PMID: 38834565 DOI: 10.1038/s41598-024-61983-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 05/13/2024] [Indexed: 06/06/2024] Open
Abstract
The pure conjugated polyarylene azomethine (CPAA) and its nanocomposites (CPAA-TiO2) with different concentrations of TiO2 nanoparticles were successfully prepared by in-situ technique and analyzed by different advanced techniques. XRD has confirmed the structural properties and crystallinity of (CPAA) and nanocomposites. The SEM clearly shows that the (CPAA) is uniform and homogeneous, with tightly connected aggregate layers in shape. However, the amount of TiO2 in the nanocomposites greatly affects their morphology, revealing structural differences and indicating a reaction between (CPAA) and TiO2, especially at a higher concentration of 5% TiO2. A new composite of (CPAA) was introduced and the photocatalytic effect for MB was studied. The removal efficiency of (pure-CPAA) over MB dye under simulated sunlight was 62%. However, (CPAA-TiO2 1%) destroyed 90% of MB dyes. It was discovered that the low band gap of (CPAA-TiO2 1% (2.84 eV)) accelerates high electron-hole recombination, increasing photocatalytic activity.
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Affiliation(s)
- Marwa M Sayed
- Chemistry Department, Faculty of Science, New Valley University, El-Kharja, 72511, Egypt.
| | - Abdelaziz M Aboraia
- Physics Department, Faculty of Science, Al-Azhar University, Assiut, 71542, Egypt.
- Energy Storage Research Laboratory (ESRL), Physics Department, Faculty of Science, Al-Azhar University, Assiut, 71542, Egypt.
| | - Yara A Kasem
- Polymer Research Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
| | - Nancy N Elew
- Physics Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Yasser A M Ismail
- Department of Physics, Faculty of Science, Islamic University of Madinah, Madinah, Saudi Arabia.
| | - Kamal I Aly
- Polymer Research Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt.
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3
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Erjeno DD, Asequia DMA, Osorio CKF, Omisol CJM, Etom AE, Hisona RMR, Tilendo AC, Triana APG, Dumancas GG, Zoleta JB, Alguno AC, Malaluan RM, Lubguban AA. Facile Synthesis of Band Gap-Tunable Kappa-Carrageenan-Mediated C,S-Doped TiO 2 Nanoparticles for Enhanced Dye Degradation. ACS OMEGA 2024; 9:21245-21259. [PMID: 38764615 PMCID: PMC11097159 DOI: 10.1021/acsomega.4c01370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/15/2024] [Accepted: 04/23/2024] [Indexed: 05/21/2024]
Abstract
Semiconducting nanoparticles (SNPs) have garnered significant attention for their role in photocatalysis technology, offering a cost-effective and highly efficient method for breaking down organic dyes. Of particular significance within SNP-based photocatalysis are tunable band gap TiO2 nanoparticles (NPs), which demonstrate remarkable enhancement in photocatalytic efficiency. In the present work, we introduce an approach for the synthesis of TiO2 NPs using kappa-carrageenan (κ-carrageenan), not just as a reducing and stabilizing agent but as a dopant for the resulting TiO2 NPs. During the synthesis of TiO2 NPs in the presence of sulfate-rich carrageenan, the process predominantly leaves residual sulfur and carbon. The presence of residual carbon, in conjunction with sulfur doping, as indicated by fast FTIR spectra, XPS, and EDX, leads to a significant reduction in the band gap of the resulting composite to 2.71 eV. The reduction of composite band gap yields remarkable degradation of methylene blue (99.97%) and methyl orange (97.84%). This work presents an eco-friendly and highly effective solution for the swift removal of environmentally harmful organic dyes.
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Affiliation(s)
- Daisy
Jane D. Erjeno
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Dan Michael A. Asequia
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Carlo Kurt F. Osorio
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Christine Joy M. Omisol
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Andrei E. Etom
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Renzo Miguel R. Hisona
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Amierson C. Tilendo
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Chemical
Engineering Department, Mindanao State University
− Marawi, Marawi City 9700, Philippines
| | - Ann Pearl G. Triana
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Gerard G. Dumancas
- Department
of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | - Joshua B. Zoleta
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
| | - Arnold C. Alguno
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Physics, Mindanao State University −
Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Roberto M. Malaluan
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
| | - Arnold A. Lubguban
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
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4
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Nelson K, Mecha AC, Kumar A. Characterization of novel solar based nitrogen doped titanium dioxide photocatalytic membrane for wastewater treatment. Heliyon 2024; 10:e29806. [PMID: 38681563 PMCID: PMC11046203 DOI: 10.1016/j.heliyon.2024.e29806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/16/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024] Open
Abstract
The increasing presence of microbial and emerging organic contaminants pose detrimental effects on the environment and ecosystem such as diseases, pandemics and toxicity. Most of these synthetic pollutants are biorecalcitrant and therefore persist in the environment. Conventional water treatment methods are not effective thereby necessitating the development of advanced techniques such as photocatalysis and membrane processes. In this study, visible light-driven photocatalytic membrane was synthesized through the immobilization of nitrogen-doped nanoparticles onto the polyvinylidene fluoride (PVDF) membrane and performance evaluated with E.coli microbial contaminant removal. Characterization was done using Fourier transform infrared spectra, X-ray diffraction (XRD), water contact angle, Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The Nitrogen-doping of titanium dioxide red-shifted the light absorption to a visible range of 440 nm from 400 nm. Nitrogen dopant was detected at 1420 cm-1and 1170 cm-1 for nitrogen doped nanoparticles and 1346-1417 cm-1 for nitrogen doped titanium dioxide PVDF membrane. SEM-EDX confirmed presences of nitrogen in nitrogen doped titanium dioxide nanoparticles on membrane surface with nitrogen elemental composition of 0.01 % wt. The water contact angle reduced by 81.39o from 120.14o to 38.75o because of PVA immobilization of nitrogen-doped titanium dioxide and glutaraldehyde crosslinking. Nitrogen doping resulted in visible light active photocatalytic membranes with better hydrophilicity and fouling resistance. 8.42 E.coli log removal and a relative flux of 0.35 was obtained within 75 min. The developed photocatalytic membrane enables the use of sunlight hence a less costly method for decontamination of wastewater.
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Affiliation(s)
- Kipchumba Nelson
- Renewable Energy, Nanomaterials, and Water Research Group, Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
| | - Achisa C. Mecha
- Renewable Energy, Nanomaterials, and Water Research Group, Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
- Department of Environmental Science, University of Arizona, USA
| | - Anil Kumar
- Department of Chemical and Process Engineering, Moi University, P.O. Box 3900, Eldoret, Kenya
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5
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Thakur N, Thakur N, Kumar A, Thakur VK, Kalia S, Arya V, Kumar A, Kumar S, Kyzas GZ. A critical review on the recent trends of photocatalytic, antibacterial, antioxidant and nanohybrid applications of anatase and rutile TiO2 nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169815. [PMID: 38184262 DOI: 10.1016/j.scitotenv.2023.169815] [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: 11/03/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have become a focal point of research due to their widespread daily use and diverse synthesis methods, including physical, chemical, and environmentally sustainable approaches. These nanoparticles possess unique attributes such as size, shape, and surface functionality, making them particularly intriguing for applications in the biomedical field. The continuous exploration of TiO2 NPs is driven by the quest to enhance their multifunctionality, aiming to create next-generation products with superior performance. Recent research efforts have specifically focused on understanding the anatase and rutile phases of TiO2 NPs and evaluating their potential in various domains, including photocatalytic processes, antibacterial properties, antioxidant effects, and nanohybrid applications. The hypothesis guiding this research is that by exploring different synthesis methods, particularly chemical and environmentally friendly approaches, and incorporating doping and co-doping techniques, the properties of TiO2 NPs can be significantly improved for diverse applications. The study employs a comprehensive approach, investigating the effects of nanoparticle size, shape, dose, and exposure time on performance. The synthesis methods considered encompass both conventional chemical processes and environmentally friendly alternatives, with a focus on how doping and co-doping can enhance the properties of TiO2 NPs. The research unveils valuable insights into the distinct phases of TiO2 NPs and their potential across various applications. It sheds light on the improved properties achieved through doping and co-doping, showcasing advancements in photocatalytic processes, antibacterial efficacy, antioxidant capabilities, and nanohybrid applications. The study concludes by emphasizing regulatory aspects and offering suggestions for product enhancement. It provides recommendations for the reliable application of TiO2 NPs, addressing a comprehensive spectrum of critical aspects in TiO2 NP research and application. Overall, this research contributes to the evolving landscape of TiO2 NP utilization, offering valuable insights for the development of innovative and high-performance products.
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Affiliation(s)
- Naveen Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India.
| | - Nikesh Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India
| | - Anil Kumar
- School of chemical and metallurgical engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Susheel Kalia
- Department of Chemistry, ACC Wing (Academic Block) Indian Military Academy, Dehradun, Uttarakhand 248007, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Ashwani Kumar
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Sunil Kumar
- Department of Animal Sciences, Central University of Himachal Pradesh, Kangra, Shahpur, Himachal Pradesh 176206, India
| | - George Z Kyzas
- Hephaestus Laboratory, Department of Chemistry, School of Science, International Hellenic University, Kavala, Greece.
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6
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Aguilar-Aguilar A, de León-Martínez LD, Forgionny A, Acelas Soto NY, Mendoza SR, Zárate-Guzmán AI. A systematic review on the current situation of emerging pollutants in Mexico: A perspective on policies, regulation, detection, and elimination in water and wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167426. [PMID: 37774864 DOI: 10.1016/j.scitotenv.2023.167426] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/01/2023]
Abstract
Emerging pollutants (EPs) emerged as a group of new compounds whose presence in the environment has been widely detected in Mexico. In this country, different concentrations of pharmaceutical compounds, pesticides, dyes, and microplastics have been reported, which vary depending on the region and the analyzed matrix (i.e., wastewater, surface water, groundwater). The evidence of the EPs' presence focuses on the detection of them, but there is a gap in information regarding is biomonitoring and their effects in health in Mexico. The presence of these pollutants in the country associated with lack of proper regulations in the discharge and disposal of EPs. Therefore, this review aims to provide a comprehensive view of the current environmental status, policies, and frameworks regarding Mexico's situation. The review also highlights the lack of information about biomonitoring since EPs are present in water even after their treatment, leading to a critical situation, which is high exposure to humans and animals. Although, technologies to efficiently eliminate EPs are available, their application has been reported only at a laboratory scale thus far. Here, an overview of health and environmental impacts and a summary of the research works reported in Mexico from 2014 to 2023 were presented. This review concludes with a concrete point of view and perspective on the status of the EPs' research in Mexico as an alert for government entities about the necessity of measures to control the EPs disposal and treatment.
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Affiliation(s)
- Angélica Aguilar-Aguilar
- Centro de Investigación y Estudios de Posgrado, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico
| | | | - Angélica Forgionny
- Grupo de Materiales con Impacto, Mat&mpac, Facultad de Ciencias Básicas, Universidad de Medellín, Medellín 55450, Colombia
| | - Nancy Y Acelas Soto
- Grupo de Materiales con Impacto, Mat&mpac, Facultad de Ciencias Básicas, Universidad de Medellín, Medellín 55450, Colombia
| | - Sergio Rosales Mendoza
- Centro de Investigación en Ciencias de la Salud y Biomedicina, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Manuel Nava No. 201, San Luis Potosí 78210, Mexico
| | - Ana I Zárate-Guzmán
- Centro de Investigación y Estudios de Posgrado, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico.
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7
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Ahammad NA, Ahmad MA, Hameed BH, Mohd Din AT. A mini review of recent progress in the removal of emerging contaminants from pharmaceutical waste using various adsorbents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:124459-124473. [PMID: 35314938 DOI: 10.1007/s11356-022-19829-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
The presence of emerging contaminants (ECs) originating from pharmaceutical waste in water, wastewater, and marine ecosystems at various geographical locations has been clearly publicised. This review paper presents an overview of current monitoring data on the occurrences and distributions of ECs in coastal ecosystem, tap water, surface water, ground water, treated sewage effluents, and other sources. Technological advancements for EC removal are also presented, which include physical, chemical, biological, and hybrid treatments. Adsorption remains the most effective method to remove ECs from water bodies. Various types of adsorbents, such as activated carbons, biochars, nanoadsorbents (carbon nanotubes and graphene), ordered mesoporous carbons, molecular imprinting polymers, clays, zeolites, and metal-organic frameworks have been extensively used for removing ECs from water sources and wastewater. Extensive findings on adsorptive performances, process efficiency, reusability properties, and other related information are thoroughly discussed in this mini review.
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Affiliation(s)
- Nur Azian Ahammad
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Mohd Azmier Ahmad
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Bassim H Hameed
- Department of Chemical Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Azam Taufik Mohd Din
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Pulau Pinang, Malaysia.
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8
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Mahadadalkar MA, Park N, Yusuf M, Nagappan S, Nallal M, Park KH. Electrospun Fe doped TiO 2 fiber photocatalyst for efficient wastewater treatment. CHEMOSPHERE 2023; 330:138599. [PMID: 37030342 DOI: 10.1016/j.chemosphere.2023.138599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/23/2023] [Accepted: 04/03/2023] [Indexed: 05/14/2023]
Abstract
Water pollution caused by industrial wastewater is the most critical environmental problem in the world. Synthetic dyes are commonly used in various industries such as paper, plastic, printing, leather and textile for their ability to impact color. Complex composition, high toxicity and low biodegradability of dyes make them difficult to degrade which causes a substantial negative impact on overall ecosystems. To address this issue we synthesized TiO2 fibers photocatalyst using the combination of sol-gel and electrospinning techniques to be used in the degradation of dyes which causes water pollution. We doped Fe in TiO2 fibers to enhance the absorption in the visible region of the solar spectrum which will also help to increase the degradation efficiency. As synthesized pristine TiO2 fibers and Fe doped TiO2 fibers were analyzed using different characterization techniques such as X-ray diffraction, Scanning electron microscopy, Transmission electron microscopy, UV-Visible spectroscopy, X-ray photoelectron spectroscopy. 5% Fe doped TiO2 fibers show excellent photocatalytic degradation activity for rhodamine B (99% degradation in 120 min). It can be utilized for degradation of other dye pollutants such as methylene blue, Congo red and methyl orange. It shows good photocatalytic activity (97%) even after 5 cycles of reuse. The radical trapping experiments reveals that holes, •O2- and •OH has a significant contribution in the photocatalytic degradation. Due to the robust fibrous nature of 5FeTOF the process of collection of photocatalysts was simple and without loss as compared to powder photocatalysts. This justifies our selection of electrospinning method of synthesis of 5FeTOF which is also useful for large scale production.
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Affiliation(s)
| | - NaHyun Park
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea
| | - Mohammad Yusuf
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea
| | - Saravanan Nagappan
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea
| | - Muthuchamy Nallal
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea
| | - Kang Hyun Park
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea.
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9
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Abdulrahman SA, Ibraheem SS, Shnain ZY. An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation. CHIMICA TECHNO ACTA 2023. [DOI: 10.15826/chimtech.2023.10.1.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
The need for efficient remediation solutions to wastewater has risen due to the concerning prevalence of toxic organic pollutants. It is possible for the linked photocatalysis-membrane separation system to concurrently achieve the photoreaction of pollutants and their removal from wastewater in order to accomplish the goal of completely purifying the wastewater. This investigation's objective is to provide analytical overview of the photocatalytic and membrane coupling process, photocatalytic membrane reactors, and the potential applications of these technologies in the treatment of wastewater for the persistent organic matter removal. In the review, an examination of photocatalytic and membrane processes to remove organic compounds from wastewater is presented. Based on the literature analysis, it was observed that the application of photocatalytic membrane reactors is significantly influenced by a wide variety of factors. Some of these factors include pollutant concentration, dissolved oxygen, aeration, pH, and hydraulic retention time. Light intensity is another factor that has a significant influence. It was also revealed how distillation membranes work when integrated with photocatalytic process. This brief overview will help researchers understand how successful coupled photocatalytic and membrane distillation are in the treatment of wastewater containing organic pollutants.
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10
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Cherif Y, Azzi H, Sridharan K, Ji S, Choi H, Allan MG, Benaissa S, Saidi-Bendahou K, Damptey L, Ribeiro CS, Krishnamurthy S, Nagarajan S, Maroto-Valer MM, Kuehnel MF, Pitchaimuthu S. Facile Synthesis of Gram-Scale Mesoporous Ag/TiO 2 Photocatalysts for Pharmaceutical Water Pollutant Removal and Green Hydrogen Generation. ACS OMEGA 2023; 8:1249-1261. [PMID: 36643558 PMCID: PMC9835632 DOI: 10.1021/acsomega.2c06657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
This work demonstrates a two-step gram-scale synthesis of presynthesized silver (Ag) nanoparticles impregnated with mesoporous TiO2 and evaluates their feasibility for wastewater treatment and hydrogen gas generation under natural sunlight. Paracetamol was chosen as the model pharmaceutical pollutant for evaluating photocatalytic performance. A systematic material analysis (morphology, chemical environment, optical bandgap energy) of the Ag/TiO2 photocatalyst powder was carried out, and the influence of material properties on the performance is discussed in detail. The experimental results showed that the decoration of anatase TiO2 nanoparticles (size between 80 and 100 nm) with 5 nm Ag nanoparticles (1 wt %) induced visible-light absorption and enhanced charge carrier separation. As a result, 0.01 g/L Ag/TiO2 effectively removed 99% of 0.01 g/L paracetamol in 120 min and exhibited 60% higher photocatalytic removal than pristine TiO2. Alongside paracetamol degradation, Ag/TiO2 led to the generation of 1729 μmol H2 g-1 h-1. This proof-of-concept approach for tandem pollutant degradation and hydrogen generation was further evaluated with rare earth metal (lanthanum)- and nonmetal (nitrogen)-doped TiO2, which also showed a positive response. Using a combination of ab initio calculations and our new theory model, we revealed that the enhanced photocatalytic performance of Ag/TiO2 was due to the surface Fermi-level change of TiO2 and lowered surface reaction energy barrier for water pollutant oxidation. This work opens new opportunities for exploiting tandem photocatalytic routes beyond water splitting and understanding the simultaneous reactions in metal-doped metal oxide photocatalyst systems under natural sunlight.
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Affiliation(s)
- Yassine Cherif
- Laboratoire
de Catalyse et Synthèse en Chimie Organique, Université de Tlemcen, BP 119, Tlemcen13000, Algeria
| | - Hajer Azzi
- Laboratoire
de Catalyse et Synthèse en Chimie Organique, Université de Tlemcen, BP 119, Tlemcen13000, Algeria
- Institut
des Sciences et de la Technologie, Université d’Ain
Témouchent, BP
284, 46000Ain Témouchent, Algeria
| | - Kishore Sridharan
- Department
of Nanoscience and Technology, School of Physical Sciences, University of Calicut, P. O. Thenhipalam673635, India
| | - Seulgi Ji
- Theoretical
Materials & Chemistry Group, Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939Cologne, Germany
| | - Heechae Choi
- Theoretical
Materials & Chemistry Group, Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939Cologne, Germany
| | - Michael G. Allan
- Department
of Chemistry, Swansea University, Singleton Park, SwanseaSA2 8PP, United Kingdom
| | - Sihem Benaissa
- Institut
des Sciences et de la Technologie, Université d’Ain
Témouchent, BP
284, 46000Ain Témouchent, Algeria
| | - Karima Saidi-Bendahou
- Laboratoire
de Catalyse et Synthèse en Chimie Organique, Université de Tlemcen, BP 119, Tlemcen13000, Algeria
| | - Lois Damptey
- School of
Engineering & Innovation, The Open University, Walton Hall, Milton KeynesMK7 6AA, United Kingdom
| | - Camila Silva Ribeiro
- School of
Engineering & Innovation, The Open University, Walton Hall, Milton KeynesMK7 6AA, United Kingdom
| | - Satheesh Krishnamurthy
- School of
Engineering & Innovation, The Open University, Walton Hall, Milton KeynesMK7 6AA, United Kingdom
| | - Sanjay Nagarajan
- Department
of Chemical Engineering, University of Bath, BathBA2 7AY, United Kingdom
| | - M. Mercedes Maroto-Valer
- Research
Centre for Carbon Solutions, Institute of Mechanical and Processing
Engineering, School of Engineering & Physical Science, Heriot-Watt University, EdinburghEH14 4AS, United Kingdom
| | - Moritz F. Kuehnel
- Department
of Chemistry, Swansea University, Singleton Park, SwanseaSA2 8PP, United Kingdom
- Fraunhofer
Institute for Wind Energy Systems IWES, Am Haupttor 4310, 06237Leuna, Germany
| | - Sudhagar Pitchaimuthu
- Research
Centre for Carbon Solutions, Institute of Mechanical and Processing
Engineering, School of Engineering & Physical Science, Heriot-Watt University, EdinburghEH14 4AS, United Kingdom
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11
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Developing a photo-electric-field wireless electrochemical system for highly efficient removal of diazinon as an organic model pollutant as a next-generation electrochemical advanced oxidation process. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-022-01839-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Tercan M, Dayan O, Özdemir N. Simultaneous reduction of 4-nitrophenol, 4-nitroaniline and methylene blue organic pollutants via TiO2 supported Pd(II) complex catalyst bearing 2-(6-methylpyridin-2-yl)-1H-benzimidazole type ligand. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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13
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Chai YD, Pang YL, Lim S, Chong WC, Lai CW, Abdullah AZ. Recent Progress on Tailoring the Biomass-Derived Cellulose Hybrid Composite Photocatalysts. Polymers (Basel) 2022; 14:polym14235244. [PMID: 36501638 PMCID: PMC9736154 DOI: 10.3390/polym14235244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022] Open
Abstract
Biomass-derived cellulose hybrid composite materials are promising for application in the field of photocatalysis due to their excellent properties. The excellent properties between biomass-derived cellulose and photocatalyst materials was induced by biocompatibility and high hydrophilicity of the cellulose components. Biomass-derived cellulose exhibited huge amount of electron-rich hydroxyl group which could promote superior interaction with the photocatalyst. Hence, the original sources and types of cellulose, synthesizing methods, and fabrication cellulose composites together with applications are reviewed in this paper. Different types of biomasses such as biochar, activated carbon (AC), cellulose, chitosan, and chitin were discussed. Cellulose is categorized as plant cellulose, bacterial cellulose, algae cellulose, and tunicate cellulose. The extraction and purification steps of cellulose were explained in detail. Next, the common photocatalyst nanomaterials including titanium dioxide (TiO2), zinc oxide (ZnO), graphitic carbon nitride (g-C3N4), and graphene, were introduced based on their distinct structures, advantages, and limitations in water treatment applications. The synthesizing method of TiO2-based photocatalyst includes hydrothermal synthesis, sol-gel synthesis, and chemical vapor deposition synthesis. Different synthesizing methods contribute toward different TiO2 forms in terms of structural phases and surface morphology. The fabrication and performance of cellulose composite catalysts give readers a better understanding of the incorporation of cellulose in the development of sustainable and robust photocatalysts. The modifications including metal doping, non-metal doping, and metal-organic frameworks (MOFs) showed improvements on the degradation performance of cellulose composite catalysts. The information and evidence on the fabrication techniques of biomass-derived cellulose hybrid photocatalyst and its recent application in the field of water treatment were reviewed thoroughly in this review paper.
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Affiliation(s)
- Yi Ding Chai
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Yean Ling Pang
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Correspondence: or ; Tel.: +603-9086-0288; Fax: +603-9019-8868
| | - Steven Lim
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Woon Chan Chong
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
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14
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Lilly R, Prabhakaran S, Giridharan K, Sambandam P, Stalin B, Subhashini SJ, Nagaprasad N, Jule LT, Ramaswamy K. Efficiency of Ferritin bio-nanomaterial in reducing the pollutants level of water in the underground corridors of metro rail using GIS. Sci Rep 2022; 12:20301. [PMID: 36434051 PMCID: PMC9700854 DOI: 10.1038/s41598-022-24626-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022] Open
Abstract
The underground developments are likely to deteriorate the water quality, which causes damage to the structure. The pollutant levels largely affect the aquifer properties and alter the characteristics of the water quality. Ferritin nanoparticle usage proves to be an effective technology for reducing the pollutant level of the salts, which are likely to affect the underground structure. The observation wells are selected around the underground Metro Rail Corridor, and the secondary observation wells are selected around the corridors. Ferritin is a common iron storage protein as a powder used in the selected wells identified in the path of underground metro rail corridors. Water sampling was done to assess the water quality in the laboratory. The water quality index plots for the two phases (1995-2008) and (2009-2014) using GIS explains the water quality scenario before and after the Ferritin treatment. The Ferritin treatment in water was very effective in reducing the pollutants level of Fluoride and sulphate salts which is likely to bring damage to the structure.
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Affiliation(s)
- R. Lilly
- grid.444519.90000 0004 1755 8086Department of Naval Architecture and Offshore Engineering, Academy of Maritime Education and Training, Chennai, Tamil Nadu 603112 India
| | - S. Prabhakaran
- grid.444519.90000 0004 1755 8086Department of Marine Engineering, Academy of Maritime Education and Training, Chennai, Tamil Nadu 603112 India
| | - K. Giridharan
- grid.252262.30000 0001 0613 6919Department of Mechanical Engineering, Easwari Engineering College, Chennai, Tamil Nadu 600089 India
| | - Padmanabhan Sambandam
- grid.464713.30000 0004 1777 5670School of Mechanical and Construction, Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology, Chennai, Tamil Nadu 600062 India
| | - B. Stalin
- grid.252262.30000 0001 0613 6919Department of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai, Tamil Nadu 625 019 India
| | - S. J. Subhashini
- grid.444541.40000 0004 1764 948XDepartment of Computer Science and Engineering, School of Computing, Kalasalingam Academy of Research and Education (Deemed to be University), Virdhunagar, Tamil Nadu 626126 India
| | - N. Nagaprasad
- Department of Mechanical Engineering, ULTRA College of Engineering and Technology, Madurai, Tamil Nadu 625 104 India
| | - Leta Tesfaye Jule
- Centre for Excellence-Indigenous Knowledge, Innovative Technology Transfer and Entrepreneurship, Dambi Dollo University, Dembi Dolo, Ethiopia ,Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Dembi Dolo, Ethiopia
| | - Krishnaraj Ramaswamy
- Centre for Excellence-Indigenous Knowledge, Innovative Technology Transfer and Entrepreneurship, Dambi Dollo University, Dembi Dolo, Ethiopia ,Department of Mechanical Engineering, Dambi Dollo University, Dembi Dolo, Ethiopia
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15
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Natar NS, Ghani NIA, Hamzah SR, Rosli MA, Muhamad NA, Azami MS, Ishak MAM, Razak S, Nawawi WI. The Role of Nitrogen-Doped TiO 2 Supported by Platinum Catalyst Synthesized via Various Mode Preparations for Photocatalytic Enhancement. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3998. [PMID: 36432284 PMCID: PMC9698348 DOI: 10.3390/nano12223998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
The limitations of TiO2 as a photocatalyst such as the larger bandgap energy, which only activates under the UV region, give a lower photocatalytic activity. This study reports the role of the N and Pt co-dopant on the modification of the TiO2 photocatalyst for photocatalytic degradation of methylene blue dye under different mode preparations, i.e., sequential and vice-versa modes. The sequential mode preparation of the N and Pt co-dopant TiO2 photocatalyst consisted of the initial preparation of the N-doped TiO2 (N-TiO2) under the calcination method, which was then further doped with platinum (Pt) through the photodeposition process labeled as NPseq-TiO2, while the vice-versa mode was labeled as PNrev-TiO2. About 1.58 wt.% of N element was found in the NPseq-TiO2 photocatalyst, while there was no presence of N element detected in PNrev-TiO2, confirmed through an elemental analyzer (CHNS-O) and (EDX) analysis. The optimum weight percentage of Pt for both modes was detected at about ±2.0 wt.%, which was confirmed by inductively coupled plasma-emission spectroscopy (ICP-OES). The photoactivity under methylene blue (MB) dye degradation of the NPseq-TiO2 photocatalyst was 2 and 1.5 times faster compared to the unmodified TiO2 and PNrev-TiO2, where the photodegradation rates were, ca., 0.065 min-1 and 0.078 min-1, respectively. This was due to the N elements being incorporated with the TiO2 lattice, which was proven by UV-Vis/DRS where the bandgap energy of NPseq-TiO2 was reduced from 3.2 eV to 2.9 eV. In addition, the N generated a stronger PL signal due to the formation of oxygen vacancies defects on the surface of the NPseq-TiO2 photocatalyst. The higher specific surface area as well as higher pore volume for the NPseq-TiO2 photocatalyst enhanced its photocatalytic activity. Moreover, the NPseq-TiO2 showed the lowest COD value, and it was completely mineralized after 7 h of light irradiation. The preparation order did not affect the Pt dopant but did for the N element. Therefore, it is significant to investigate different mode preparations of the N and Pt co-dopant for the modification of TiO2 to produce a good-quality photocatalyst for photocatalytic study under the photodegradation of MB dye.
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Affiliation(s)
- Nadiah Sabihah Natar
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
- Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia
| | | | - Siti Raihan Hamzah
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
| | - Muhammad Afiq Rosli
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
| | - Nur Aien Muhamad
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
| | - Mohammad Saifulddin Azami
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
| | - Mohd Azlan Mohd Ishak
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
| | - Sharin Razak
- Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis, Arau 02600, Perlis, Malaysia
| | - Wan Izhan Nawawi
- Faculty of Applied Sciences, Universiti Teknologi MARA Cawangan Perlis, Arau 02600, Perlis, Malaysia
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16
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Sanchez Tobon C, Panžić I, Bafti A, Matijašić G, Ljubas D, Ćurković L. Rapid Microwave-Assisted Synthesis of N/TiO 2/rGO Nanoparticles for the Photocatalytic Degradation of Pharmaceuticals. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3975. [PMID: 36432262 PMCID: PMC9696933 DOI: 10.3390/nano12223975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Nanocomposites comprising nitrogen-doped TiO2 and reduced graphene oxide (N/TiO2/rGO), with different rGO loading qualities, were prepared by a cost-effective microwave-assisted synthesis method. The synthesized materials were broadly characterized by Raman spectroscopy, X-ray diffraction (XRD), infrared spectroscopy (FTIR), photoelectron spectroscopy (XPS), diffuse reflectance spectroscopy (DRS), electron microscopy (SEM-EDS), and nitrogen adsorption/desorption isotherms. Anatase was the only crystalline phase observed for all synthesized materials. The rGO loading did not affect the morphological properties, but it positively influenced the photocatalytic activity of the nanocomposite materials, especially at low rGO loading. Photocatalysts were evaluated via the degradation of specific organic micropollutant (OMP) pharmaceuticals: ciprofloxacin (CIP), diclofenac (DCF), and salicylic acid (SA), under different radiation sources: ultraviolet A (UVA), solar light simulator (SLS), blue visible light (BVL) and cold visible light (CVL). CIP and SA were removed effectively via the synergy of adsorption and photocatalysis, while DCF degradation was achieved solely by photocatalysis. After implementing scavenger agents, photocatalytic degradation processes mainly depended on the specific pollutant type, while irradiation sources barely defined the photocatalytic mechanism. On the other hand, changes in irradiation intensity significantly influenced the photolysis process, while photocatalysis was slightly affected, indicating that irradiation spectra are more relevant than intensity.
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Affiliation(s)
- Camilo Sanchez Tobon
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
| | - Ivana Panžić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia
| | - Arijeta Bafti
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia
| | - Gordana Matijašić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia
| | - Davor Ljubas
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
| | - Lidija Ćurković
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
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17
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Muñoz-Flores P, Poon PS, Ania CO, Matos J. Performance of a C-containing Cu-based photocatalyst for the degradation of tartrazine: Comparison of performance in a slurry and CPC photoreactor under artificial and natural solar light. J Colloid Interface Sci 2022; 623:646-659. [PMID: 35598491 DOI: 10.1016/j.jcis.2022.05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 11/28/2022]
Abstract
A carbon-containing Cu-based material (Cu@C) was used as photocatalyst for the degradation of a commonly food-industry azo-dye (tartrazine, also called Y5), under solar light at laboratory and pilot scale photoreactors. Important performance parameters such as dark adsorption capacity, catalyst́s loading and initial concentration of the dye were first optimized in a slurry photoreactor at laboratory scale under artificial solar light following the kinetics of degradation of the dye. Afterwards, the photocatalytic activity was investigated at pilot scale in a compound parabolic collector (CPC) photoreactor operating for 10 h of irradiation. The degradation of tartrazine is among the highest values reported for alternative metal oxide semiconductors, in both photoreactor configurations. Catalytic data revealed a 3 times faster degradation kinetics of tartrazine in the CPC photoreactor under natural solar light than in the slurry reactor under artificial solar light. This behavior indicates that a moderate photon flux in the CPC is more adequate to operate with the prepared photocatalyst, as it minimizes the recombination of charge carriers in the catalyst. This is important, since most of the photocatalytic tests designed to evaluate the activity of novel materials are frequently carried out under simulated solar light and disregard the impact of photon flux in outdoor conditions.
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Affiliation(s)
- Paula Muñoz-Flores
- Unidad de Desarrollo Tecnológico (UDT), Universidad de Concepción, Barrio Universitario s/n, Concepción, Chile; Facultad de Ingeniería, Universidad de Concepción, Barrio Universitario s/n, Concepción, Chile.
| | - Po S Poon
- Unidad de Desarrollo Tecnológico (UDT), Universidad de Concepción, Barrio Universitario s/n, Concepción, Chile
| | - Conchi O Ania
- CEMHTI, CNRS (UPR 3079), Université d'Orléans, 45071 Orléans, France.
| | - Juan Matos
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, 8900000 Santiago, Chile.
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18
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Mhemid RKS, Salman MS, Mohammed NA. Comparing the efficiency of N-doped TiO 2 and commercial TiO 2 as photo catalysts for amoxicillin and ciprofloxacin photo-degradation under solar irradiation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2022; 57:813-829. [PMID: 36073063 DOI: 10.1080/10934529.2022.2117960] [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: 12/05/2021] [Revised: 08/17/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
Advanced oxidation processes (AOPs) have gained traction as alternative solutions for eliminating pollutants from pharmaceutical wastewater for reuse. In this research, the performance of two photo-catalysts (Commercial TiO2 and synthesis N-doped TiO2) were compared in terms of the degradation of amoxicillin and ciprofloxacin from an aqueous solution using a photo-catalytic batch system under solar irradiation. The influence of five operating factors is: pH (5-11), H2O2 concentrations (200-600) mg/L, catalyst concentrations (25-100 mg/L), Antibiotic concentration (25-100) mg/L and reaction time (30-120 min), on the oxidation of the listed above pollutants were investigated using the central composite design (CCD) of response surface methodology (RSM). The catalyst of N-doping TiO2 was synthesized by sol-gel method, using the urea (CH4N2O) as a nitrogen source. The resulting material was analyzed using Scanning Electron Microscopy (SEM), X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Additionally, it can be observed from the analysis of the characteristics of N-doped TiO2 the homogenous dispersion of nitrogen molecules, small particle sizes, and energy-gap reduction, prompting a 6% increase in antibiotic degradation compared with Com. TiO2. In the RSM analysis, the ideal conditions were found to be a pH of 5, H2O2 conc. of 400 mg/L, catalyst conc. of 50 mg, and antibiotics conc. of 25 mg/L for an antibiotics reduction rate of 89.31% (AMOX/Com. TiO2/Solar), 90.2 (CFX/Com. TiO2/Solar), 95.8% (AMOX/N-TiO2/Solar) and 97.3% (CFX/N-TiO2/Solar). Experimental results were in good agreement with predictions because the predicted R2 matched well with the adjusted R2.
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Affiliation(s)
- Rasha Khalid Sabri Mhemid
- Department of Environmental Technology, College of Environmental Science and Technology, University of Mosul, Mosul, Iraq
| | | | - Noor A Mohammed
- Department of Environmental Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq
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19
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Silerio-Vázquez F, Proal Nájera JB, Bundschuh J, Alarcon-Herrera MT. Photocatalysis for arsenic removal from water: considerations for solar photocatalytic reactors. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:61594-61607. [PMID: 34533752 DOI: 10.1007/s11356-021-16507-5] [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: 06/07/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
The following work provides a perspective on the potential application of solar heterogeneous photocatalysis, which is a nonselective advanced oxidation process considered as a sustainable technology, to assist in arsenic removal from water, which is a global threat to human health. Heterogeneous photocatalysis can oxidize trivalent arsenic to pentavalent arsenic, decreasing its toxicity and easing its removal with other technologies, such as chemical precipitation and adsorption. Several lab-scale arsenic photocatalytic oxidation and diverse solar heterogeneous photocatalytic operations carried out in different reactor designs are analyzed. It was found out that this technology has not been translated to operational pilot plant scale prototypes. General research on reactors is scarce, comprising a small percentage of the photocatalysis related scientific literature. It was possible to elucidate some operational parameters that a reactor must comply to operate efficiently. Reports on small-scale application shed light that in areas where other water purification technologies are economically and/or technically not suitable, and the solar energy is available, shed light on the fact that solar heterogeneous photocatalysis is highly promissory within a water purification process for removal of arsenic from water.
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Affiliation(s)
- Felipe Silerio-Vázquez
- Departamento de Ingeniería Sustentable, Centro de Investigación en Materiales Avanzados, S.C. Calle CIMAV 110, Colonia 15 de mayo, C.P, 34147, Durango, México
| | - José B Proal Nájera
- Instituto Politécnico Nacional, CIIDIR-Durango, Calle Sigma 119, Fraccionamiento 20 de Noviembre II, C. P, 34220, Durango, México
| | - Jochen Bundschuh
- UNESCO Chair on Groundwater Arsenic within the 2030 Agenda for Sustainable Development, and School of Civil Engineering, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, Queensland, 4350, Australia
| | - María T Alarcon-Herrera
- Departamento de Ingeniería Sustentable, Centro de Investigación en Materiales Avanzados, S.C. Calle CIMAV 110, Colonia 15 de mayo, C.P, 34147, Durango, México.
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20
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Felis E, Buta-Hubeny M, Zieliński W, Hubeny J, Harnisz M, Bajkacz S, Korzeniewska E. Solar-light driven photodegradation of antimicrobials, their transformation by-products and antibiotic resistance determinants in treated wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155447. [PMID: 35469868 DOI: 10.1016/j.scitotenv.2022.155447] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/29/2022] [Accepted: 04/18/2022] [Indexed: 05/23/2023]
Abstract
This study aimed to assess the possibility of using solar light-driven photolysis and TiO2-based photocatalysis to remove (1) antibiotic residues, (2) their transformation products (TPs), (3) antibiotic resistance determinants, and (4) genes identifying the indicator bacteria in a treated wastewater (secondary effluent). 16 antimicrobials belonging to the different classes and 45 their transformation by-products were selected for the study. The most susceptible to photochemical decomposition was tetracycline, which was completely removed in the photocatalysis process and in more than 80% in the solar light-driven photolysis. 83.8% removal (on average) was observed using photolysis and 89.9% using photocatalysis in the case of the tested genes, among which the genes sul1, uidA, and intI1 showed the highest degree of removal by both methods. The study revealed that applied methods promisingly remove the tested antibiotics, their TPs and genes even in such a complex matrix including treated wastewater and photocatalysis process had a higher removal efficiency of antibiotics, TPs and genes tested. Moreover, the high percentage removal of the intI1 gene (>93%) indicates the possibilities of use of the solar light-driven photolysis and TiO2-based photocatalysis in minimizing the antibiotic resistance genes transfer by mobile genetic elements.
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Affiliation(s)
- Ewa Felis
- Silesian University of Technology, Faculty of Power and Environmental Engineering, Environmental Biotechnology Department, Akademicka 2, 44-100 Gliwice, Poland; Silesian University of Technology, Centre for Biotechnology, ul. B. Krzywoustego 8, 44-100 Gliwice, Poland.
| | - Martyna Buta-Hubeny
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-719 Olsztyn, Poland
| | - Wiktor Zieliński
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-719 Olsztyn, Poland
| | - Jakub Hubeny
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-719 Olsztyn, Poland
| | - Monika Harnisz
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-719 Olsztyn, Poland
| | - Sylwia Bajkacz
- Silesian University of Technology, Faculty of Chemistry, Department of Inorganic Chemistry, Analytical Chemistry and Electrochemistry, B. Krzywoustego 6 Str., 44-100 Gliwice, Poland; Silesian University of Technology, Centre for Biotechnology, ul. B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Ewa Korzeniewska
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-719 Olsztyn, Poland
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21
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Bulavinets T, Yaremchuk I, Bobitski Y, Barylyak A. Synthesis and photocatalytic efficiency of plasmonic Ag/TiO2:S nanosystems. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02593-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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22
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Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration. Top Curr Chem (Cham) 2022; 380:44. [PMID: 35951126 PMCID: PMC9372017 DOI: 10.1007/s41061-022-00397-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 06/07/2022] [Indexed: 12/07/2022]
Abstract
Nanotechnology has emerged as an extraordinary and rapidly developing discipline of science. It has remolded the fate of the whole world by providing diverse horizons in different fields. Nanomaterials are appealing because of their incredibly small size and large surface area. Apart from the naturally occurring nanomaterials, synthetic nanomaterials are being prepared on large scales with different sizes and properties. Such nanomaterials are being utilized as an innovative and green approach in multiple fields. To expand the applications and enhance the properties of the nanomaterials, their functionalization and engineering are being performed on a massive scale. The functionalization helps to add to the existing useful properties of the nanomaterials, hence broadening the scope of their utilization. A large class of covalent and non-covalent functionalized nanomaterials (FNMs) including carbons, metal oxides, quantum dots, and composites of these materials with other organic or inorganic materials are being synthesized and used for environmental remediation applications including wastewater treatment. This review summarizes recent advances in the synthesis, reporting techniques, and applications of FNMs in adsorptive and photocatalytic removal of pollutants from wastewater. Future prospects are also examined, along with suggestions for attaining massive benefits in the areas of FNMs.
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Wahyuni ET, Mochammad RS, Mahira NS, Lestari ND, Syoufian A, Nasir TA. Enhancement of TiO2 activity under visible light by doping S element from sulfur core for Pb(II) photo-oxidation. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-022-02268-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Goncharuk VV, Shvadchina YO, Vakulenko VF, Topkin YV. Comparing the Efficiency of Photocatalytic Humic Acid Destruction in Water with Oxygen and Hydrogen Peroxide on (N,Fe)-Doped Titanium Dioxide Samples in Different Irradiation Modes. J WATER CHEM TECHNO+ 2022. [DOI: 10.3103/s1063455x22030055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Sanchez Tobon C, Ljubas D, Mandić V, Panžić I, Matijašić G, Ćurković L. Microwave-Assisted Synthesis of N/TiO 2 Nanoparticles for Photocatalysis under Different Irradiation Spectra. NANOMATERIALS 2022; 12:nano12091473. [PMID: 35564182 PMCID: PMC9104789 DOI: 10.3390/nano12091473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 12/10/2022]
Abstract
Nitrogen-doped TiO2 (N/TiO2) photocatalyst nanoparticles were derived by the environmentally friendly and cost-effective microwave-assisted synthesis method. The samples were prepared at different reaction parameters (temperature and time) and precursor ratio (amount of nitrogen source; urea). The obtained materials were characterized by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), Raman spectroscopy (RS), infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS), electron microscopy (SEM-EDS), and nitrogen adsorption/desorption isotherms. Two cycles of optimizations were conducted to determine the best reaction temperature and time, as well as N content. The phase composition for all N/TiO2 nanomaterials was identified as photoactive anatase. The reaction temperature was found to be the most relevant parameter for the course of the structural evolution of the samples. The nitrogen content was the least relevant for the development of the particle morphology, but it was important for photocatalytic performance. The photocatalytic activity of N/TiO2 nanoparticle aqueous suspensions was evaluated by the degradation of antibiotic ciprofloxacin (CIP) under different irradiation spectra: ultraviolet A light (UVA), simulated solar light, and visible light. As expected, all prepared samples demonstrated efficient CIP degradation. For all irradiation sources, increasing synthesis temperature and increasing nitrogen content further improved the degradation efficiencies.
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Affiliation(s)
- Camilo Sanchez Tobon
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000 Zagreb, Croatia
- Correspondence: (C.S.T.); (D.L.); (L.Ć.)
| | - Davor Ljubas
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000 Zagreb, Croatia
- Correspondence: (C.S.T.); (D.L.); (L.Ć.)
| | - Vilko Mandić
- Faculty of Chemical Engineering and Technology, University of Zagreb, 10000 Zagreb, Croatia; (V.M.); (I.P.); (G.M.)
| | - Ivana Panžić
- Faculty of Chemical Engineering and Technology, University of Zagreb, 10000 Zagreb, Croatia; (V.M.); (I.P.); (G.M.)
| | - Gordana Matijašić
- Faculty of Chemical Engineering and Technology, University of Zagreb, 10000 Zagreb, Croatia; (V.M.); (I.P.); (G.M.)
| | - Lidija Ćurković
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000 Zagreb, Croatia
- Correspondence: (C.S.T.); (D.L.); (L.Ć.)
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Removal of the Hazardous Congo Red Dye through Degradation under Visible Light Photocatalyzed by C,N Co-Doped TiO2 Prepared from Chicken Egg White. ScientificWorldJournal 2022; 2022:2613841. [PMID: 35463828 PMCID: PMC9033386 DOI: 10.1155/2022/2613841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 02/20/2022] [Accepted: 03/23/2022] [Indexed: 11/18/2022] Open
Abstract
The C,N co-doped TiO2 photocatalyst was prepared by interacting the chicken egg white having various weights (1, 2, and 4 g) with 1 g of TiO2 in an autoclave through the hydrothermal process at 150°C. The C,N co-doped TiO2 photocatalysts were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), specular reflectance UV/visible (SRUV/Vis), and transmission electron microscope (TEM) instruments. The photocatalytic activity of the co-doped TiO2 was evaluated by monitoring the photo-decolorization of Congo red dye under visible light through a batch experiment. The characterization results assigned that the C and N atoms from the chicken egg white have been successfully co-doped into TiO2 through interstitial and substitutional combination, which could notably narrow their band gap energy entering into the visible region. In line with the gap narrowing, the co-doping C,N into TiO2 could remarkably improve the photocatalytic activity under visible light in the dye photo-decolorization. The enhancement of the photocatalyst activity of TiO2-C,N was controlled by the weight of the egg white introduced, and 2 g of the egg white resulted in the highest activity. Further, the best dye photo-decolorization, which was about 98%, of 10 mg/L Congo red dye in 100 mL of the solution under visible irradiation could be reached by applying TiO2-C,N prepared from 2 g of the egg white, within 45 min, at pH 7, and 50 mg of the photocatalyst mass.
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Abstract
Nowadays, water pollution is one of the most dangerous environmental problems in the world. The presence of the so-called emerging pollutants in the different water bodies, impossible to eliminate through conventional biological and physical treatments used in wastewater treatment plants due to their persistent and recalcitrant nature, means that pollution continues growing throughout the world. The presence of these emerging pollutants involves serious risks to human and animal health for aquatic and terrestrial organisms. Therefore, in recent years, advanced oxidation processes (AOPs) have been postulated as a viable, innovative and efficient technology for the elimination of these types of compounds from water bodies. The oxidation/reduction reactions triggered in most of these processes require a suitable catalyst. The most recent research focuses on the use and development of different types of heterogeneous catalysts, which are capable of overcoming some of the operational limitations of homogeneous processes such as the generation of metallic sludge, difficult separation of treated water and narrow working pH. This review details the current advances in the field of heterogeneous AOPs, Fenton processes and photocatalysts for the removal of different types of emerging pollutants.
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Doabi EH, Elmi F, Elmi MM. Facile and novel synthesis of nitrogen doped TiO2/Acid soluble collagen-polyvinyl pyrrolidone (ASC-PVP) hybrid nanocomposite for rapid and effective photodegradation of naphthalene from water under visible light irradiation. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113677] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Subramaniam MN, Goh PS, Kanakaraju D, Lim JW, Lau WJ, Ismail AF. Photocatalytic membranes: a new perspective for persistent organic pollutants removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:12506-12530. [PMID: 34101123 DOI: 10.1007/s11356-021-14676-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
The presence of conventional and emerging pollutants infiltrating into our water bodies is a course of concern as they have seriously threatened water security. Established techniques such as photocatalysis and membrane technology have proven to be promising in removing various persistent organic pollutants (POP) from wastewaters. The emergence of hybrid photocatalytic membrane which incorporates both photocatalysis and membrane technology has shown greater potential in treating POP laden wastewater based on their synergistic effects. This article provides an in-depth review on the roles of both photocatalysis and membrane technology in hybrid photocatalytic membranes for the treatment of POP containing wastewaters. A concise introduction on POP's in terms of examples, their origins and their effect on a multitude of organisms are critically reviewed. The fundamentals of photocatalytic mechanism, current directions in photocatalyst design and their employment to treat POP's are also discussed. Finally, the challenges and future direction in this field are presented.
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Affiliation(s)
- Mahesan Naidu Subramaniam
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Pei Sean Goh
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | - Devagi Kanakaraju
- Faculty of Resource and Science Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Darul Ridzuan, 32610, Perak, Malaysia
| | - Woei Jye Lau
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
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30
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Paradisi E, Rosa R, Baldi G, Dami V, Cioni A, Lorenzi G, Leonelli C. Microwave-Assisted Vacuum Synthesis of TiO 2 Nanocrystalline Powders in One-Pot, One-Step Procedure. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 12:149. [PMID: 35010100 PMCID: PMC8746694 DOI: 10.3390/nano12010149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/24/2021] [Accepted: 12/27/2021] [Indexed: 01/02/2023]
Abstract
A new method for fast and simple synthesis of crystalline TiO2 nanoparticles with photocatalytic activity was developed by carrying out a classic sol-gel reaction directly under vacuum. The use of microwaves for fast heating of the reaction medium further reduces synthesis times. When the solvent is completely removed by vacuum, the product is obtained in the form of a powder that can be easily redispersed in water to yield a stable nanoparticle suspension, exhibiting a comparable photocatalytic activity with respect to a commercial product. The present methodology can, therefore, be considered a process intensification procedure for the production of nanotitania.
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Affiliation(s)
- Enrico Paradisi
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Roberto Rosa
- Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy;
| | - Giovanni Baldi
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Valentina Dami
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Andrea Cioni
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Giada Lorenzi
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Cristina Leonelli
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena, Italy;
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Acesulfame K Photodegradation over Nitrogen-Doped TiO2. Catalysts 2021. [DOI: 10.3390/catal11101193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Acesulfame K is a zero-calorie alternative to sugar used worldwide. There is contradictory information on the toxicity of the compound, but its accumulation in the aquatic environment is undeniable. In this study, one-pot sol-gel synthesis was used to obtain nitrogen-doped TiO2 photocatalysts. Doping up to 6.29 wt % of nitrogen caused an increase in the surface area of the catalysts (48.55–58.23 m2∙g−1) and a reduction of the pHPZC value (5.72–5.05). Acesulfame K photodegradation was tested at the initial concentration of 20–100 ppm and the catalyst concentration at the level of 1 g∙L−1. Compared to the pure anatase, 4.83–6.29 wt % nitrogen-doped TiO2 showed an effective photodegradation of Acesulfame K. Ninety percent molecule removal was obtained after ~100 min, ~90 min, and ~80 min for initial concentrations of 20 ppm, 50 ppm, and 100 ppm, respectively. The increased activity of the catalysts is due to the modification of the TiO2 lattice structure and probably the limitation of the photogenerated electron/hole charge carrier recombination. It was shown that the electrostatic interactions between Acesulfame K and the catalyst surface play an important role in the photodegradation efficiency.
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32
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Karim AV, Shriwastav A. Degradation of amoxicillin with sono, photo, and sonophotocatalytic oxidation under low-frequency ultrasound and visible light. ENVIRONMENTAL RESEARCH 2021; 200:111515. [PMID: 34129864 DOI: 10.1016/j.envres.2021.111515] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/08/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
The presence of pharmaceutically active compounds in aquatic bodies is a global concern, and suitable treatment technologies are required. In this study, the efficacy of photocatalytic, sonocatalytic, and sonophotocatalytic oxidation processes for the degradation of amoxicillin (AMX) was investigated using visible light with N doped TiO2 (N-TiO2) nanoparticles as the catalyst and low-frequency ultrasound in a novel multifrequency reactor. The influence of different operational parameters on the extent of AMX degradation was studied. Sonophotocatalytic oxidation was found more efficient for AMX degradation when compared to photocatalysis or sonocatalysis alone, and may be due to the reduced bandgap of the catalyst, enhanced cavitation effect due to the presence of the solid catalyst, and improved mass transfer of pollutants. AMX degradation during sono, photo, and sonophotocatalytic oxidation processes was in good agreement with pseudo-first-order kinetics. Empirical kinetic models were also developed using multiple linear regression for predicting the degradation efficiency accounting for the operational parameters. Scavenger experiments suggested that •OH radicals largely contributed to AMX degradation, and a plausible mechanism for degradation was proposed. Further, possible degradation pathways for all three treatment processes are also proposed after identifying the degradation products.
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Affiliation(s)
- Ansaf V Karim
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400 076, India
| | - Amritanshu Shriwastav
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400 076, India.
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33
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Effect of Precursor Nature and Sol-Gel Synthesis Conditions on TiO 2 Aerogel's Structure. Molecules 2021; 26:molecules26165090. [PMID: 34443677 PMCID: PMC8401230 DOI: 10.3390/molecules26165090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 11/17/2022] Open
Abstract
The aim of this investigation was to synthesize high porosity TiO2 aerogel by applying sol-gel and subcritical drying methods and to identify the influence of reagent's nature and synthesis conditions on their structural and optical properties. Methods of XRD, FT-IR, BET, STA, SEM, and UV-vis were applied to investigate and compare the properties of synthesized TiO2 aerogels and to determine the most effective synthesis route. The structural parameters of the synthesized materials can be varied by changing the precursor type (titanium (IV), isopropoxide (TIP), or tetrabutylorthotitanate (TBOT)) and the nature of the solvent used for additional exchange (n-hexane (nH), cyclohexane (CH), or diethyl ether (DE)). All of the subcritical dried samples show the amorphous structure, which tends to crystallize into the anatase phase after calcination. The number of micro and mesopores and the specific surface area depends on the synthesis conditions. The pores with the highest diameter have been found for additionally nH exchanged and aged aerogel synthesized from precursor TIP. Despite the imperfections in the structure, the produced aerogels show structural and optical properties typical of the TiO2 structures mentioned in the literature.
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Ahmed SF, Mofijur M, Nuzhat S, Chowdhury AT, Rafa N, Uddin MA, Inayat A, Mahlia TMI, Ong HC, Chia WY, Show PL. Recent developments in physical, biological, chemical, and hybrid treatment techniques for removing emerging contaminants from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125912. [PMID: 34492846 DOI: 10.1016/j.jhazmat.2021.125912] [Citation(s) in RCA: 157] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/07/2021] [Accepted: 04/14/2021] [Indexed: 05/25/2023]
Abstract
Emerging contaminants (ECs) in wastewater have recently attracted the attention of researchers as they pose significant risks to human health and wildlife. This paper presents the state-of-art technologies used to remove ECs from wastewater through a comprehensive review. It also highlights the challenges faced by existing EC removal technologies in wastewater treatment plants and provides future research directions. Many treatment technologies like biological, chemical, and physical approaches have been advanced for removing various ECs. However, currently, no individual technology can effectively remove ECs, whereas hybrid systems have often been found to be more efficient. A hybrid technique of ozonation accompanied by activated carbon was found significantly effective in removing some ECs, particularly pharmaceuticals and pesticides. Despite the lack of extensive research, nanotechnology may be a promising approach as nanomaterial incorporated technologies have shown potential in removing different contaminants from wastewater. Nevertheless, most existing technologies are highly energy and resource-intensive as well as costly to maintain and operate. Besides, most proposed advanced treatment technologies are yet to be evaluated for large-scale practicality. Complemented with techno-economic feasibility studies of the treatment techniques, comprehensive research and development are therefore necessary to achieve a full and effective removal of ECs by wastewater treatment plants.
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Affiliation(s)
- S F Ahmed
- Science and Math Program, Asian University for Women, Chattogram 4000, Bangladesh
| | - M Mofijur
- School of Information Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia; Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar 31952, Saudi Arabia
| | - Samiha Nuzhat
- Environmental Sciences Program, Asian University for Women, Chattogram 4000, Bangladesh; Water and Life Bangladesh, Dhaka, Bangladesh
| | | | - Nazifa Rafa
- Environmental Sciences Program, Asian University for Women, Chattogram 4000, Bangladesh
| | - Md Alhaz Uddin
- Department of Civil Engineering, College of Engineering, Jouf University, Sakaka, Saudi Arabia
| | - Abrar Inayat
- Department of Sustainable and Renewable Energy Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; Biomass & Bioenergy Research Group, Center for Sustainable Energy and Power Systems Research, Research Institute of Sciences and Engineering, University of Sharjah, 27272 Sharjah, United Arab Emirates
| | - T M I Mahlia
- School of Information Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia
| | - Hwai Chyuan Ong
- School of Information Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology, Sydney, NSW 2007, Australia
| | - Wen Yi Chia
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.
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35
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Photocatalysis over N-Doped TiO2 Driven by Visible Light for Pb(II) Removal from Aqueous Media. Catalysts 2021. [DOI: 10.3390/catal11080945] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The photocatalysis process over N-doped TiO2 under visible light is examined for Pb(II) removal. The doping TiO2 with N element was conducted by simple hydrothermal technique and using urea as the N source. The doped photocatalysts were characterized by DRUVS, XRD, FTIR and SEM-EDX instruments. Photocatalysis of Pb(II) through a batch experiment was performed for evaluation of the doped TiO2 activity under visible light, with applying various fractions of N-doped, photocatalyst mass, irradiation time, and solution pH. The research results attributed that N doping has been successfully performed, which shifted TiO2 absorption into visible region, allowing it to be active under visible irradiation. The photocatalytic removal of Pb(II) proceeded through photo-oxidation to form PbO2. Doping N into TiO2 noticeably enhanced the photo-catalytic oxidation of Pb(II) under visible light irradiation. The highest photocatalytic oxidation of 15 mg/L Pb(II) in 25 mL of the solution could be reached by employing TiO2 doped with 10%w of N content 15 mg, 30 min of time and at pH 8. The doped-photocatalyst that was three times repeatedly used demonstrated significant activity. The most effective process of Pb(II) photo-oxidation under beneficial condition, producing less toxic and handleable PbO2 and good repeatable photocatalyst, suggest a feasible method for Pb(II) remediation on an industrial scale.
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Wang W, Yu H, Li K, Lin F, Huang C, Yan B, Cheng Z, Li X, Chen G, Hou LA. Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125649. [PMID: 33743377 DOI: 10.1016/j.jhazmat.2021.125649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/27/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
HCHO is the most concerned indoor air pollutant that photocatalytic degradation is a feasible approach. To achieve efficient and complete degradation of HCHO under visible light irradiation, heteroatoms are usually doped in TiO2. But using natural materials as a dopant instead of expensive and toxic chemicals to fertilize TiO2 remains challenging. This paper proposes a sustainable and green approach to synthesize an efficient N, Ca co-doped TiO2 photocatalyst (TIMP) by using the insoluble matrix proteins (IMPs) extracted from abalone shell. TIMP-0.8 achieves near completely degradation HCHO within 45 min under visible light at ambient temperature and exhibits superior stability after 7 cycles. TIMP-0.8 has monodispersity with smaller diameter, high porosity, abundant defects and high adsorption affinity for surface hydroxyls compared with pure TiO2. With the assistance of IMPs, the rate-determining step of HCHO degradation changes from -COOH oxidation to spontaneous decomposition of HCO3-, significantly facilitating the elimination and mineralization of HCHO. Overall, IMPs from abalone shell are natural surfactant, bio-templet, and dopant for TiO2 modification, contributing to desirable visible-light photocatalytic performance for HCHO degradation. This paper provides new insight for high-value utilization of waste shell and photocatalytic indoor purification.
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Affiliation(s)
- Wenjun Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Hongdi Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Kai Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Fawei Lin
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China.
| | - Cheng Huang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Zhanjun Cheng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Xiaoqing Li
- Qingdao Junrong Institute of Innovation Engineering Co., Ltd, Qingdao 266000, PR China
| | - Guanyi Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, PR China
| | - Li-An Hou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, PR China; Xi'an High-Tech Institute, Xi'an 710025, PR China.
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37
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Marques AC, Vale M, Vicente D, Schreck M, Tervoort E, Niederberger M. Porous Silica Microspheres with Immobilized Titania Nanoparticles for In-Flow Solar-Driven Purification of Wastewater. GLOBAL CHALLENGES (HOBOKEN, NJ) 2021; 5:2000116. [PMID: 33976905 PMCID: PMC8101353 DOI: 10.1002/gch2.202000116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/07/2020] [Indexed: 05/10/2023]
Abstract
In this paper, inorganic silica microspheres with interconnected macroporosity are tested as a platform for designing robust and efficient photocatalytic systems for a continuous flow reactor, enabling a low cost and straightforward purification of wastewater through solar-driven photocatalysis. The photocatalytically active microspheres are prepared by wet impregnation of porous silica scaffolds with Trizma-functionalized anatase titania (TiO2) nanoparticles (NPs). NPs loading of 22 wt% is obtained in the form of a thin and well-attached layer, covering the external surface of the microspheres as well as the internal surface of the pores. The TiO2 loading leads to an increase of the specific surface area by 26%, without impacting the typically interconnected macroporosity (≈60%) of the microspheres, which is essential for an efficient flow of the pollutant solution during the photocatalytic tests. These are carried out in a liquid medium for the decomposition of methyl orange and paracetamol. In addition to photocatalytic activity under continuous flow, the microspheres offer the advantage that they can be easily removed from the reaction medium, which is an appealing aspect for industrial applications. In this work, the typical issues of TiO2 NPs photocatalysts are circumvented, without the need for elaborate chemistries, and for low availability and expensive raw materials.
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Affiliation(s)
- Ana C. Marques
- CERENADEQInstituto Superior TécnicoUniversidade de LisboaAvenida Rovisco PaisLisboa1049‐001Portugal
| | - Mário Vale
- CERENADEQInstituto Superior TécnicoUniversidade de LisboaAvenida Rovisco PaisLisboa1049‐001Portugal
| | - Daniel Vicente
- CERENADEQInstituto Superior TécnicoUniversidade de LisboaAvenida Rovisco PaisLisboa1049‐001Portugal
| | - Murielle Schreck
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH Zürich, Vladimir‐Prelog‐Weg 5Zürich8093Switzerland
| | - Elena Tervoort
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH Zürich, Vladimir‐Prelog‐Weg 5Zürich8093Switzerland
| | - Markus Niederberger
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH Zürich, Vladimir‐Prelog‐Weg 5Zürich8093Switzerland
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Vembuli T, Thiripuranthagan S, Sureshkumar T, Erusappan E, Kumaravel S, Kasinathan M, Natesan B, Sivakumar A. Degradation of Harmful Organics Using Visible Light Driven N-TiO₂/rGO Nanocomposite. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:3081-3091. [PMID: 33653483 DOI: 10.1166/jnn.2021.19122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Nitrogen doped titania over reduced form of graphene oxide (N-TiO₂/rGO) catalysts were synthesized by adopting single step hydrothermal route. All the prepared photocatalysts were thoroughly characterized by using different analytical tools such as XRD, Raman, UV-DRS, FE-SEM and HRTEM. The photocatalytic activities of bare and composite catalysts were evaluated towards the photocatalytic decolourisation/degradation of Methylene blue dye (MB) and Metronidazole antibiotic (MTZ) under visible electromagnetic radiation. Among all the synthesized catalysts, N-TiO₂/rGO composite catalyst showed the highest decolourisation/degradation activity towards both the dye and the antibiotic. The most active catalyst was also tested under UV and solar light irradiations which showed promising results. The stability of the most active catalyst (N-TiO₂/rGO) was examined by recyclability test. The possible photocatalytic mechanism was proposed for the composite catalyst.
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Affiliation(s)
- Thanigaivel Vembuli
- Catalysis Laboratory, Department of Applied Science and Technology, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | - Sivakumar Thiripuranthagan
- Catalysis Laboratory, Department of Applied Science and Technology, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | | | - Elangovan Erusappan
- Catalysis Laboratory, Department of Applied Science and Technology, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | - Sakthivel Kumaravel
- Catalysis Laboratory, Department of Applied Science and Technology, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | - Maruthadurai Kasinathan
- Catalysis Laboratory, Department of Applied Science and Technology, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | - Balasubramanian Natesan
- Department of Chemical Engineering, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
| | - Aishwarya Sivakumar
- Department of Chemical Engineering, A. C. Tech, Anna University, Chennai 600025, Tamil Nadu, India
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Effect of Background Water Matrices on Pharmaceutical and Personal Care Product Removal by UV-LED/TiO2. Catalysts 2021. [DOI: 10.3390/catal11050576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this study, we evaluated the effectiveness of UV-LED-irradiated TiO2 in removing 24 commonly detected PPCPs in two water matrices (municipal wastewater effluent and Suwannee River NOM–synthetic water) and compared their performance with that of ultrapure water. Relatively fast removal kinetics were observed for 29% and 12% of the PPCPs in ultrapure water and synthetic surface water, respectively (kapp of 1–2 min−1). However, they all remained recalcitrant to photocatalysis when using wastewater effluent as the background matrix (kapp < 0.1 min−1). We also observed that the pH-corrected octanol/water partition coefficient (log Dow) correlated well with PPCP degradation rate constants in ultrapure water, whereas molecular weight was strongly associated with the rate constants in both synthetic surface water and wastewater. The electrical energy per order (EEO) values calculated at the end of the experiments suggest that UV-LED/P25 can be an energy-efficient method for water treatment applications (2.96, 4.77, and 16.36 kW h m−3 in ultrapure water, synthetic surface water, and wastewater effluents, respectively). Although TiO2 photocatalysis is a promising approach in removing PPCPs, our results indicate that additional challenges need to be overcome for PPCPs in more complex water matrices, including an assessment of photocatalytic removal under different background water matrices.
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Maślana K, Żywicka A, Wenelska K, Mijowska E. Boosting of Antibacterial Performance of Cellulose Based Paper Sheet via TiO 2 Nanoparticles. Int J Mol Sci 2021; 22:ijms22031451. [PMID: 33535598 PMCID: PMC7867162 DOI: 10.3390/ijms22031451] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 11/30/2022] Open
Abstract
Here, we aimed to boost antibacterial performance of cellulose fibers for paper sheet application. Therefore, TiO2 nanoparticles have been used with controlled loading onto the surface of the fibers. A simple and facile composite preparation route based on ultrasound and mechanical assisted stirring has been developed. We tested cellulose paper enriched by TiO2 from 1.0 wt% to 8.0 wt%, respectively. Antibacterial performance has been studied against Staphylococcus aureus and Escherichia coli bacteria. Studies showed that all composites exhibit significant capability to reduce living cells of S. aureus and E. coli bacteria at least 60%. The simplicity, low cost, and reproducibility of the prepared method indicates the potential to be scaled up for industrial applications.
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Affiliation(s)
- Klaudia Maślana
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland; (K.W.); (E.M.)
- Correspondence: ; Tel.: +48-91-449-6052
| | - Anna Żywicka
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland;
| | - Karolina Wenelska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland; (K.W.); (E.M.)
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastow Ave. 42, 71-065 Szczecin, Poland; (K.W.); (E.M.)
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Abstract
This article presents an overview of the reports on the doping of TiO2 with carbon, nitrogen, and sulfur, including single, co-, and tri-doping. A comparison of the properties of the photocatalysts synthesized from various precursors of TiO2 and C, N, or S dopants is summarized. Selected methods of synthesis of the non-metal doped TiO2 are also described. Furthermore, the influence of the preparation conditions on the doping mode (interstitial or substitutional) with reference to various types of the modified TiO2 is summarized. The mechanisms of photocatalysis for the different modes of the non-metal doping are also discussed. Moreover, selected applications of the non-metal doped TiO2 photocatalysts are shown, including the removal of organic compounds from water/wastewater, air purification, production of hydrogen, lithium storage, inactivation of bacteria, or carbon dioxide reduction.
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Electrospun-based TiO2 nanofibers for organic pollutant photodegradation: a comprehensive review. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Abstract
Titanium dioxide (TiO2) is commonly used as a photocatalyst in the removal of organic pollutants. However, weaknesses of TiO2 such as fast charge recombination and low visible light usage limit its industrial application. Furthermore, photocatalysts that are lost during the treatment of pollutants create the problem of secondary pollutants. Electrospun-based TiO2 fiber is a promising alternative to immobilize TiO2 and to improve its performance in photodegradation. Some strategies have been employed in fabricating the photocatalytic fibers by producing hollow fibers, porous fibers, composite TiO2 with magnetic materials, graphene oxide, as well as doping TiO2 with metal. The modification of TiO2 can improve the absorption of TiO2 to the visible light area, act as an electron acceptor, provide large surface area, and promote the phase transformation of TiO2. The improvement of TiO2 properties can enhance carrier transfer rate which reduces the recombination and promotes the generation of radicals that potentially degrade organic pollutants. The recyclability of fibers, calcination effect, photocatalytic reactors used, operation parameters involved in photodegradation as well as the commercialization potential of TiO2 fibers are also discussed in this review.
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Gomes J, Lincho J, Mazierski P, Miodyńska M, Zaleska-Medynska A, Martins RC. Unexpected effect of ozone on the paraben's mixture degradation using TiO 2 supported nanotubes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140831. [PMID: 32679505 DOI: 10.1016/j.scitotenv.2020.140831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
Titanium dioxide can present advantages when coupled with ozonation. Moreover, the catalytic ozonation can be enhanced by radiation. The main disadvantage of this technology is the use of a suspended catalyst entailing a separation step. Thus, catalytic ozonation was analysed using supported TiO2 nanotubes prepared by anodization at different voltages. The effect of different radiation sources on the catalytic ozonation of parabens was tested. The increase on voltage preparation led to plates with higher surface areas from 60 to 280 cm2. However, this did not improve the parabens mixture degradation during UVA photocatalytic ozonation. The use of sunlight radiation allows a significant reduction in terms of time necessary for total parabens degradation from 15 to 10 min. However, the amount of ozone required doubles. Catalytic ozonation presents worst results than single ozonation. This means that molecular ozone is the main responsible for degradation. No dissolved ozone was detected at the experiments with supported nanotubes which could mean that it was adsorbed on the catalysts surface decreasing the degradation rates. The presence of municipal wastewaters as matrix inhibited parabens degradation for both single and catalytic ozonation, mainly due to the trapping ozone effect. In fact, for the TOD of 4.5 mg/L it was just possible to remove about 80% of parabens when MWW compared to 100% when UP was used. Even so, the presence of supported nanotubes during ozonation seems to be required to reduce the toxicity of the resultant treated effluent. In fact, the wastewater luminescence inhibition decreased (from 100 to 43%) and germination index increased (from 7 to 97%) with catalytic ozonation which may enable treated water reuse.
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Affiliation(s)
- João Gomes
- University of Coimbra, CIEPQPF - Chemical Engineering Processes and Forest Products Research Center, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, Polo II, 3030-790 Coimbra, Portugal.
| | - João Lincho
- University of Coimbra, CIEPQPF - Chemical Engineering Processes and Forest Products Research Center, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, Polo II, 3030-790 Coimbra, Portugal
| | - Pawel Mazierski
- Faculty of Chemistry, Department of Environmental Technology, University of Gdansk, 80-308 Gdańsk, Poland
| | - Magdalena Miodyńska
- Faculty of Chemistry, Department of Environmental Technology, University of Gdansk, 80-308 Gdańsk, Poland
| | - Adriana Zaleska-Medynska
- Faculty of Chemistry, Department of Environmental Technology, University of Gdansk, 80-308 Gdańsk, Poland
| | - Rui C Martins
- University of Coimbra, CIEPQPF - Chemical Engineering Processes and Forest Products Research Center, Department of Chemical Engineering, Faculty of Sciences and Technology, Rua Sílvio Lima, Polo II, 3030-790 Coimbra, Portugal
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Pozo-Antonio JS, Noya-Pintos D, Sanmartín P. Moving toward Smart Cities: Evaluation of the Self-Cleaning Properties of Si-Based Consolidants Containing Nanocrystalline TiO 2 Activated by either UV-A or UV-B Radiation. Polymers (Basel) 2020; 12:polym12112577. [PMID: 33147858 PMCID: PMC7692194 DOI: 10.3390/polym12112577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/27/2020] [Accepted: 10/31/2020] [Indexed: 11/16/2022] Open
Abstract
This study evaluated the self-cleaning ability and durability of Si-based consolidants (an ethyl silicate consolidant and a consolidant based on nanosized silica) spiked with nanocrystalline TiO2 activated by either UV-A radiation (spectral region between 340 and 400 nm, and main peak at 365 nm) or UV-B radiation (spectral region between 270 and 420 nm, and main peak at 310 nm). Granite samples were coated with consolidant, to which nanocrystalline TiO2 was added at different concentrations (0.5, 1, and 3%, by wt.). Diesel soot was then applied to the coated surfaces, and the samples were exposed to UV-A or UV-B radiation for 1650 h. The surface color changes, relative to the color of untreated granite, were determined every 330 h by color spectrophotometry. Slight color changes indicated a recovery of the reference color due to the degradation of the soot. The final surfaces of both the untreated and treated surfaces were compared by stereomicroscopy and scanning electron microscopy. The main findings were that: (1) In general, the consolidant containing nanosized silica induced the most intense photocatalytic activity. In the more compact xerogel coating formed by the nanosized silica, more TiO2 nanoparticles were available to interact with the radiation. (2) For all consolidant mixtures, soot degradation remained constant or decreased over time, except with ethyl silicate with 0.5 wt % TiO2 (no self-cleaning capacity). (3) Soot degradation increased with the concentration of TiO2. (4) The UV-B radiation was the most effective in terms of soot degradation, except for the surface coated with the ethyl silicate and 3% wt. TiO2.
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Affiliation(s)
- José Santiago Pozo-Antonio
- Dpto. Enxeñaría dos Recursos Naturais e Medio Ambiente, Escola de Enxeñaría de Minas e Enerxía, Campus As Lagoas-Marcosende, University of Vigo, 36310 Vigo, Spain
- CINTECX, University of Vigo, 36310 Vigo, Spain
- Correspondence:
| | - Daniel Noya-Pintos
- Escola Superior de Conservación e Restauración de Bens Culturais de Galicia, 36002 Pontevedra, Spain;
| | - Patricia Sanmartín
- Departamento de Edafoloxía e Química Agrícola, Facultade de Farmacia, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
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Nguyen TP, Tran QB, Ly QV, Thanh Hai L, Le DT, Tran MB, Ho TTT, Nguyen XC, Shokouhimehr M, Vo DVN, Lam SS, Do HT, Kim SY, Van Tung T, Van Le Q. Enhanced visible photocatalytic degradation of diclofen over N-doped TiO2 assisted with H2O2: A kinetic and pathway study. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.05.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Khaled B, Nassira Z, Imene H. Eco-friendly synthesis of self-regenerative low-cost biosorbent by the incorporation of CuO: a photocatalyst sensitive to visible light irradiation for azo dye removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:31074-31091. [PMID: 32524399 DOI: 10.1007/s11356-020-09364-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
Acid pretreated biomass Lemna minor (BM-H3PO4) was used as support for CuO nanoparticles loading, to investigate the dye biosorption capacity and the photocatalytic performance under artificial visible light. The surface morphology, crystal structure, elemental composition, and the bandgap of modified biomass have been determined using FE-SEM, XRD, EDX, XPS, FTIR, and UV-DR analysis. The results showed that NH2 and P-O functional groups of (BM-H3PO4) can attract the copper ions (Cu2+), which can facilitate the loading of CuO nanoparticles hence, smaller nanoparticles with an average diameter of 21 nm was obtained. It was also found that when the CuO was incorporated in BM-H3PO4 in a proper mass ratio of 0.4, the biosorption efficiency was enhanced to 3 times compared with BM-H3PO4 and reached a maximum of 91%, at a dye concentration of 20 mg/L, solution pH equal to 5, and an ambient temperature of 25 °C. Furthermore, CuO-modified BM-H3PO4 exhibits a better photocatalytic activity than pure CuO in the presence of H2O2 and visible light irradiation, where the dye was completely removed and mineralized after 240 min, evidenced by COD measurement. The photocatalytic regeneration also shows that the biosorption efficiency was maintained at 91% over 3 cycles, indicating the significant self-regenerative capacity of the biosorbent.
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Affiliation(s)
- Benabbas Khaled
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar-Annaba University, P.O. Box 12, 23000, Annaba, Algeria.
| | - Zabat Nassira
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar-Annaba University, P.O. Box 12, 23000, Annaba, Algeria
| | - Hocini Imene
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar-Annaba University, P.O. Box 12, 23000, Annaba, Algeria
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Venancio WAL, Rodrigues-Silva C, Spina M, Guimarães JR. Removal of the antimicrobial activity from fortified effluents with fluoroquinolones by photocatalytic processes: a comparative study of differently synthesized TiO 2-N. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:603-614. [PMID: 32960803 DOI: 10.2166/wst.2020.340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This study presents a comparison of three methods for TiO2-N synthesis that were applied in the photocatalytic oxidation of the fluoroquinolones (FQs) ciprofloxacin, ofloxacin, and lomefloxacin in aqueous solution. The TiO2-N bandgap is small enough to allow the use of solar energy in the photocatalytic oxidation (PCO) reactions. The TiO2 doped by a sol-gel method with titanium butoxide (TiO2-N-BUT) and titanium isopropoxide (TiO2-N-PROP) as the precursor were effective as the TiO2 (P25) impregnation with urea (TiO2-N-P25) to degrade the FQs. The FQ degradation was higher by 74, 65, and 91%, respectively for TiO2-N-BUT, TiO2-N-PROP, and TiO2-N (load 50 mg L-1, 20 min of reaction under 28 W UV-ASolar). The TiO2-P25 with urea showed the best performance in FQ degradation. The reaction intermediates might present modifications in their acceptor groups by PCO and, because of that the antimicrobial activity dropped as the reaction time increased. Reactions with TiO2-N-P25 (100 mg L-1) and TiO2-N-BUT (100 mg L-1) achieved ≥ 80% of antimicrobial activity removal from the mixed FQ solution (Cciprofloxacin = 100 μg L-1; Cofloxacin = 100 μg L-1; Clomefloxacin = 100 μg L-1) after 40 min of reaction, for both for Escherichia coli and Bacillus subtilis.
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Affiliation(s)
- Wilson Augusto Lima Venancio
- School of Civil Engineering, Architecture and Urban Design, University of Campinas, P.O. Box 6021, 13083-889, Campinas, SP, Brazil
| | - Caio Rodrigues-Silva
- Institute of Chemistry, Department of Analytical Chemistry, University of Campinas, P.O. Box 6154, 13084-971, Campinas, SP, Brazil E-mail:
| | - Mylena Spina
- School of Civil Engineering, Architecture and Urban Design, University of Campinas, P.O. Box 6021, 13083-889, Campinas, SP, Brazil
| | - José Roberto Guimarães
- School of Civil Engineering, Architecture and Urban Design, University of Campinas, P.O. Box 6021, 13083-889, Campinas, SP, Brazil
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UV–Visible Light Driven Photocatalytic Degradation of Ciprofloxacin by N,S Co-doped TiO2: The Effect of Operational Parameters. Top Catal 2020. [DOI: 10.1007/s11244-020-01319-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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A Review on the Pathways of the Improved Structural Characteristics and Photocatalytic Performance of Titanium Dioxide (TiO2) Thin Films Fabricated by the Magnetron-Sputtering Technique. Catalysts 2020. [DOI: 10.3390/catal10060598] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Titanium dioxide (TiO2) thin films are used for a broad range of applications such as wastewater treatment, photocatalytic degradation activity, water splitting, antibacterial and also in biomedical applications. There is a wide range of synthesis techniques for the deposition of TiO2 thin films, such as chemical vapor deposition (CVD) and physical vapor deposition (PVD), both of which are well known deposition methods. Layer by layer deposition with good homogeneity, even thickness and good adhesive nature is possible by using the PVD technique, with the products being used for photocatalytic applications. This review studies the effects of magnetron sputtering conditions on TiO2 films. This innovative technique can enhance the photocatalytic activity by increasing the thickness of the film higher than any other methods. The main purpose of this article is to review the effects of DC and RF magnetron sputtering conditions on the preparation of TiO2 thin films for photocatalysis. The characteristics of TiO2 films (i.e., structure, composition, and crystallinity) are affected significantly by the substrate type, the sputtering power, the distance between substrate and target, working pressure, argon/oxygen ratio, deposition time, substrate temperature, dopant types, and finally the annealing treatment. The photocatalytic activity and optical properties, including the degree of crystallinity, band gap (Eg), refractive index (n), transmittance (T), and extinction coefficient (k), of TiO2 films are dependent on the above- mentioned film characteristics. Optimal TiO2 films should have a small particle size, a strong degree of crystallinity, a low band gap, a low contact angle, a high refractive index, transmittance, and extinction coefficient. Finally, metallic and nonmetallic dopants can be added to enhance the photocatalytic activity of TiO2 films by narrowing the band gap.
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Abstract
Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.
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