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Lincho J, Zaleska-Medynska A, Martins RC, Gomes J. Nanostructured photocatalysts for the abatement of contaminants by photocatalysis and photocatalytic ozonation: An overview. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155776. [PMID: 35537515 DOI: 10.1016/j.scitotenv.2022.155776] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 06/14/2023]
Abstract
The water scarcity, the presence of different contaminants in the worldwide waters and wastewaters and their impacts should motivate their good elimination and water management. With this, photocatalysis and photocatalytic ozonation are strong solutions to obtain good quality reclaimed water, for different applications. Nanostructured supported photo-active catalysts, such as the TiO2, WO3 or ZnO can positively affect the performance of such technologies. Therefore, different semiconductors materials have been aroused the interest of the scientific community, mainly due to its functional properties as well as characteristics imposed by the different nanostructures. With this, this work overviews different works and perspective on the TiO2 nanotubes and other semiconductors nanostructures, with the analysis of different works from 2001 to 2022. Aspects as the substrate effect, electrolyte nature, aspect ratio, electrolyte aging, and annealing treatment but also the effect of morphology, anodization time, applied voltage, temperature and viscosity are discussed. Modification of TiO2 nanotubes is also presented in this paper. The main objective of this work is to present and discuss the key parameters and their effects on the anodization of different semiconductors, as well as the results obtained until today on the degradation of different contaminants by photocatalysis and photocatalytic ozonation, as well as their use on the treatment of real wastewater. TiO2 nanotubes present unique properties and highly ordered configuration, which motivate their use on photo-driven technologies for the pollutant's abatement, even when compared to other nanostructures. However, photocatalysts with activity on the visible range and solar radiation, such as the WO3, can present higher performance and can decrease operational costs, and must be an important source and a key to find efficient and cost-friendly solutions.
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Affiliation(s)
- 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
| | - 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.
| | - 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
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Kouao DS, Grochowska K, Siuzdak K. The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1131. [PMID: 35407248 PMCID: PMC9000737 DOI: 10.3390/nano12071131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/18/2022] [Accepted: 03/25/2022] [Indexed: 01/02/2023]
Abstract
Photoanodes consisting of titania nanotubes (TNTs) grown on transparent conductive oxides (TCO) by anodic oxidation are being widely investigated as a low-cost alternative to silicon-based materials, e.g., in solar light-harvesting applications. Intending to enhance the optical properties of those photoanodes, the modification of the surface chemistry or control of the geometrical characteristics of developed TNTs has been explored. In this review, the recent advancement in light-harvesting properties of transparent anodic TNTs formed onto TCO is summarized. The physical deposition methods such as magnetron sputtering, pulsed laser deposition and electron beam evaporation are the most reported for the deposition of Ti film onto TCO, which are subsequently anodized. A concise description of methods utilized to improve the adhesion of the deposited film and achieve TNT layers without cracks and delamination after the anodization is outlined. Then, the different models describing the formation mechanism of anodic TNTs are discussed with particular focus on the impact of the deposited Ti film thickness on the adhesion of TNTs. Finally, the effects of the modifications of both the surface chemistry and morphological features of materials on their photocatalyst and photovoltaic performances are discussed. For each section, experimental results obtained by different research groups are evoked.
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Affiliation(s)
- Dujearic-Stephane Kouao
- Centre for Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Science, Fiszera 14 St., 80-231 Gdańsk, Poland; (K.G.); (K.S.)
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Sugashini S, Gomathi T, Devi RA, Sudha PN, Rambabu K, Banat F. Nanochitosan/carboxymethyl cellulose/TiO 2 biocomposite for visible-light-induced photocatalytic degradation of crystal violet dye. ENVIRONMENTAL RESEARCH 2022; 204:112047. [PMID: 34529967 DOI: 10.1016/j.envres.2021.112047] [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: 05/31/2021] [Revised: 08/22/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Development of novel bionanomaterials for water and wastewater treatment has gained increased attraction and attention in recent times. The present study reports an effective biocomposite-based nano-photocatalyst comprised of nanochitosan (NCS), carboxymethyl cellulose (CMC), and titanium dioxide (TiO2) synthesized by sol-gel technique. The as-prepared NCS/CMC/TiO2 photocatalyst was systematically characterized by X-ray diffraction, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy with energy dispersive X-beam spectroscopy, Differential scanning calorimetry (DSC), and Thermogravimetric analysis (TGA). Photocatalytic degradation of the crystal violet (CV) dye using this nano photocatalyst was studied by varying the irradiation time, catalyst dosage, feed pH, and initial dye concentration. Further, the kinetic analysis of dye degradation was explored using the Langmuir-Hinshelwood model, and a plausible photocatalytic mechanism was proposed. The modification of TiO2 using NCS and CMC accelerated photocurrent transport by increasing the number of photogenerated electrons and holes. Overall, the study indicated the excellent photocatalytic performance of 95% CV dye degradation by NCS/CMC/TiO2 than the bare inorganic TiO2 photocatalyst under visible light irradiation.
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Affiliation(s)
- S Sugashini
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, India
| | - T Gomathi
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, India
| | - R Aruna Devi
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, India
| | - P N Sudha
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, India.
| | - K Rambabu
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
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Amigun A, Adekola F, Tijani J, Mustapha S. Photocatalytic degradation of malachite green dye using nitrogen/sodium/iron-TiO2 nanocatalysts. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Indira K, Shanmugam S, Hari A, Vasantharaj S, Sathiyavimal S, Brindhadevi K, El Askary A, Elfasakhany A, Pugazhendhi A. Photocatalytic degradation of congo red dye using nickel-titanium dioxide nanoflakes synthesized by Mukia madrasapatna leaf extract. ENVIRONMENTAL RESEARCH 2021; 202:111647. [PMID: 34237334 DOI: 10.1016/j.envres.2021.111647] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/27/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Semiconductor photocatalysts are efficient degraders of organic and inorganic waste water pollutants. Herein, we synthesized nickel-titanium dioxide (Ni-TiO2) nanoflakes using Mukia maderaspatana leafs with the aim of analyzing their photocatalytic degradation potential. Morphological analyses revealed that the nanoflakes were highly agglomerated with an average size of 100 nm. Further, elemental analysis confirmed the presence of Ti, O, and Ni, whereas Fourier transform infrared spectroscopy and X-ray diffraction established the presence of TiO2 and NiO. We found that photocatalytic degradation of congo red under UV illumination increased with increasing incubation period, demonstrating that Ni-TiO2 nanoflakes can be used as optimal photocatalysts for the degradation of dyes in waste water.
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Affiliation(s)
- Karuppusamy Indira
- Department of Chemistry, M. Kumarasamy College of Engineering, Karur, 639113, Tamil Nadu, India
| | - Sabarathinam Shanmugam
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China; Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044, China; Department of Microbial Biotechnology, Bharathiar University, Coimbatore, 641046, India
| | - Anjana Hari
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, 641046, India
| | - Seerangaraj Vasantharaj
- Department of Biotechnology, Hindusthan College of Arts and Science, Coimbatore, 641028, Tamil Nadu, India
| | - Selvam Sathiyavimal
- CORX Lifesciences and Pharmaceutical Private Limited, Tiruchirappalli, Tamil Nadu, India
| | - Kathirvel Brindhadevi
- Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam
| | - Ahmad El Askary
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O.Box 11099, Taif, 21944, Saudi Arabia
| | - Ashraf Elfasakhany
- Mechanical Engineering Department, College of Engineering, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
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Navidpour AH, Hosseinzadeh A, Zhou JL, Huang Z. Progress in the application of surface engineering methods in immobilizing TiO 2 and ZnO coatings for environmental photocatalysis. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1983066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amir H. Navidpour
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, Australia
| | - Ahmad Hosseinzadeh
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, Australia
| | - John L. Zhou
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, Australia
| | - Zhenguo Huang
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, Australia
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Abstract
TiO2 is a semiconductor material with high chemical stability and low toxicity. It is widely used in the fields of catalysis, sensing, hydrogen production, optics and optoelectronics. However, TiO2 photocatalyst is sensitive to ultraviolet (UV) light; this is why its photocatalytic activity and quantum efficiency are reduced. To enhance the photocatalytic efficiency in the visible light range as well as to increase the number of the active sites on the crystal surface or inhibit the recombination rate of photogenerated electron–hole pairs electrons, various metal ions were used to modify TiO2. This review paper comprehensively summarizes the latest progress on the modification of TiO2 photocatalyst by a variety of metal ions. Lastly, the future prospects of the modification of TiO2 as a photocatalyst are proposed.
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Zafar Z, Fatima R, Kim JO. Experimental studies on water matrix and influence of textile effluents on photocatalytic degradation of organic wastewater using Fe-TiO 2 nanotubes: Towards commercial application. ENVIRONMENTAL RESEARCH 2021; 197:111120. [PMID: 33823191 DOI: 10.1016/j.envres.2021.111120] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/21/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
The application of photocatalysis for the effective removal of textile dyes is dependent on various parameters related with both water quality and different chemicals discharge during the dying process. Because the oxidation rates of the particular mixtures mainly influenced by the elements of the water matrix. These elements comprised of organic, inorganic salts, heavy metals, and ions. The impact of water matrices (Tap water, DI water, seawater, surface water, and ultra-pure water) on the Congo red decolorization, total organic carbon, and chemical oxygen demand removal efficacy has been assessed using Fe-TiO2 nanotubes as a photocatalyst. The photocatalytic degradation rate decreased in unclean water due to the interferences of dissolved organics and minerals. However, all the environmental water matrices depict the significant decrease in turbidity and conductivity after treating with photocatalytic process. The photoactivity and capacity for decantation are the two crucial elements that have an impact on the "practical efficiency" of photocatalysts. Moreover, the textile wastewater contains a large quantity of dyes mixed with number of detrimental chemicals and other effluents discharged into the water which consequently pollute ecosystem and cause serious risks to human health. For environmental applications, we investigated individually the impact of various harmful chemicals commonly discharged from each step of textile wet processing which can have inhibiting or promoting effect on the azo dye photocatalytic degradation.
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Affiliation(s)
- Zulakha Zafar
- Department of Civil and Environmental Engineering, Hanyang University, 222-Wangsimni-ro Seongdong-gu, Seoul, 04763, South Korea
| | - Rida Fatima
- Department of Civil and Environmental Engineering, Hanyang University, 222-Wangsimni-ro Seongdong-gu, Seoul, 04763, South Korea
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222-Wangsimni-ro Seongdong-gu, Seoul, 04763, South Korea.
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