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Khan SA, Jain M, Pant KK, Ziora ZM, Blaskovich MAT. Photocatalytic degradation of parabens: A comprehensive meta-analysis investigating the environmental remediation potential of emerging pollutant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:171020. [PMID: 38369133 DOI: 10.1016/j.scitotenv.2024.171020] [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: 10/30/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 02/20/2024]
Abstract
The increasing prevalence of paraben compounds in the environment has given rise to concerns regarding their detrimental impacts on both ecosystems and human health. Over the past few decades, photocatalytic reactions have drawn significant attention as a method to accelerate the otherwise slow degradation of these pollutants. The current study aims to evaluate the current efficacy of the photocatalytic method for degrading parabens in aqueous solutions. An extensive literature review and bibliometric analysis were conducted to identify key research trends and influential areas in the field of photocatalytic paraben degradation. Studies were screened based on the predetermined inclusion and exclusion criteria, which led to 13 studies that were identified as being appropriate for the meta-analysis using the random effects model. Furthermore, experimental parameters such as pH, paraben initial concentration, catalyst dosage, light intensity, and contact time have been reported to have key impacts on the performance of the photocatalytic degradation process. A comprehensive quantitative assessment of these parameters was carried out in this work. Overall, photocatalytic techniques could eliminate parabens with an average degradation efficiency of >80 %. The findings of the Egger's test and the Begg's test were statistically not significant suggesting potential publication bias was not observed. This review provides a holistic understanding of the photocatalytic degradation of parabens and is anticipated to encourage more widespread adoption of photocatalytic procedures as a suitable method for the elimination of parabens from aqueous solutions, opening new avenues for future research in this direction.
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Affiliation(s)
- Sadaf Aiman Khan
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Marut Jain
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Kamal Kishore Pant
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India.
| | - Zyta Maria Ziora
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Mark A T Blaskovich
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
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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: 15] [Impact Index Per Article: 7.5] [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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3
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Degradation of Sulfamethoxazole Using a Hybrid CuOx–BiVO4/SPS/Solar System. Catalysts 2022. [DOI: 10.3390/catal12080882] [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
In recent years, advanced oxidation processes (AOPs) demonstrated great efficiency in eliminating emerging contaminants in aqueous media. However, a majority of scientists believe that one of the main reasons hindering their industrial application is the low efficiencies recorded. This can be partially attributed to reactive oxygen species (ROS) scavenging from real water matrix constituents. A promising strategy to cost-effectively increase efficiency is the simultaneous use of different AOPs. Herein, photocatalysis and sodium persulfate activation (SPS) were used simultaneously to decompose the antibiotic sulfamethoxazole (SMX) in ultrapure water (UPW) and real water matrices, such as bottled water (BW) and wastewater (WW). Specifically, copper-promoted BiVO4 photocatalysts with variable CuOx (0.75–10% wt.) content were synthesized in powder form and characterized using ΒΕΤ, XRD, DRS, SEM, and HRTEM. Results showed that under simulated solar light irradiation alone, 0.75 Cu.BVO leads to 0.5 mg/L SMX destruction in UPW in a very short treatment time, whereas higher amounts of copper loading decreased SMX degradation. In contrast, the efficiency of all photocatalytic materials dropped significantly in BW and WW. This phenomenon was surpassed using persulfate in the proposed system resulting in synergistic effects, thus significantly improving the efficiency of the combined process. Specifically, when 0.75 Cu.BVO was added in BW, only 40% SMX degradation took place in 120 min under simulated solar irradiation alone, whereas in the solar/SPS/Cu.BVO system, complete elimination was achieved after 60 min. Moreover, ~37%, 45%, and 66% synergy degrees were recorded in WW using 0.75 Cu, 3.0 Cu, and 10.0 Cu.BVO, respectively. Interestingly, experimental results highlight that catalyst screening or process/system examination must be performed in a wide window of operating parameters to avoid erroneous conclusions regarding optimal materials or process combinations for a specific application.
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Nguyen VH, Phan Thi LA, Chandana PS, Do HT, Pham TH, Lee T, Nguyen TD, Le Phuoc C, Huong PT. The degradation of paraben preservatives: Recent progress and sustainable approaches toward photocatalysis. CHEMOSPHERE 2021; 276:130163. [PMID: 33725624 DOI: 10.1016/j.chemosphere.2021.130163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/17/2021] [Accepted: 03/01/2021] [Indexed: 05/06/2023]
Abstract
Parabens are a class of compounds primarily used as antimicrobial preservatives in pharmaceutical products, cosmetics, and foodstuff. Their widely used field leads to increasing concentrations detected in various environmental matrices like water, soil, and sludges, even detected in human tissue, blood, and milk. Treatment techniques, including chemical advanced oxidation, biological degradation, and physical adsorption processes, have been widely used to complete mineralization or to degrade parabens into less complicated byproducts. All kinds of processes were reviewed to give a completed picture of parabens removal. In light of these treatment techniques, advanced photocatalysis, which is emerging rapidly and widely as an economical, efficient, and environmentally-friendly technique, has received considerable attention. TiO2-based and non-TiO2-based photocatalysts play an essential role in parabens degradation. The effect of experimental parameters, such as the concentration of targeted parabens, concentration of photocatalyst, reaction time, and initial solution pH, even the presence of radical scavengers, are surveyed and compared from the literature. Some representative parabens such as methylparaben, propylparaben, and benzylparaben have been successfully studied the reaction pathways and their intermediates in their degradation process. As reported in the literature, the degradation of parabens involves the production of highly reactive species, mainly hydroxyl radicals. These reactive radicals would attack the paraben preservatives, break, and finally mineralize them into simpler inorganic and nontoxic molecules. Concluding perspectives on the challenges and opportunities for photocatalysis toward parabens remediation are also intensively highlighted.
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Affiliation(s)
- Van-Huy Nguyen
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Lan-Anh Phan Thi
- VNU Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam; Center for Environmental Technology and Sustainable Development (CETASD), University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam.
| | - P Sri Chandana
- Department of Civil and Environmental Engineering, Annamacharya Institute of Technology and Sciences, Kadapa, 516003, A.P., India.
| | - Huu-Tuan Do
- Faculty of Environmental Science, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam
| | - Thuy-Hanh Pham
- Faculty of Environmental Science, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam
| | - Taeyoon Lee
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Trinh Duy Nguyen
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea; Center of Excellence for Green Energy and Environmental Nanomaterials (CE GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam.
| | - Cuong Le Phuoc
- Department of Environmental Management, Faculty of Environment, The University of Da Nang - University of Science and Technology, Da Nang, 550000, Viet Nam
| | - Pham Thi Huong
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Danang, 550000, Viet Nam
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5
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Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11083556] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Water scarcity represents a problem for billions of people and is expected to get worse in the future. To guarantee people’s water needs, the use of “first-hand water” or the reuse of wastewater must be done. Wastewater treatment and reuse are favorable for this purpose, since first-hand water is scarce and the economic needs for the exploration of this type of water are increasing. In wastewater treatment, it is important to remove contaminants of emerging concern, as well as pathogenic agents. Parabens are used in daily products as preservatives and are detected in different water sources. These compounds are related to different human health problems due to their endocrine-disrupting behavior, as well as several problems in animals. Thus, their removal from water streams is essential to achieve safe reusable water. Advanced Oxidation Processes (AOPs) are considered very promising technologies for wastewater treatment and can be used as alternatives or as complements of the conventional wastewater treatments that are inefficient in the removal of such contaminants. Different AOP technologies such as ozonation, catalytic ozonation, photocatalytic ozonation, Fenton’s, and photocatalysis, among others, have already been used for parabens abatement. This manuscript critically overviews several AOP technologies used in parabens abatement. These treatments were evaluated in terms of ecotoxicological assessment since the resulting by-products of parabens abatement can be more toxic than the parent compounds. The economic aspect was also analyzed to evaluate and compare the considered technologies.
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Photocatalytic Evaluation of Ag2CO3 for Ethylparaben Degradation in Different Water Matrices. WATER 2020. [DOI: 10.3390/w12041180] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The present study examines the photocatalytic properties of silver carbonate (Ag2CO3) for ethyl paraben (EP) degradation under simulated solar irradiation. Ag2CO3 was prepared according to a solution method and its physicochemical characteristics were studied by means of X-ray diffraction (XRD), the Brunauer–Emmett–Teller (BET) method, diffuse reflectance spectroscopy (DRS), and transmission electron microscopy (TEM). Complete EP (0.5 mg/L) removal was achieved after 120 min of irradiation with the use of 750 mg/L Ag2CO3 in ultrapure water (UPW), with EP degradation following pseudo-first-order kinetics. The effect of several experimental parameters was investigated; increasing catalyst concentration from 250 mg/L to 1000 mg/L led to an increase in EP removal, while increasing EP concentration from 0.25 mg/L to 1.00 mg/L slightly lowered kapp from 0.115 min−1 to 0.085 min−1. Experiments carried out with the use of UV or visible cut-off filters showed sufficient EP degradation under visible irradiation. A series of experiments were performed in real water matrices such as bottled water (BW) and wastewater (WW), manifesting Ag2CO3’s equally high photocatalytic activity for EP degradation. To interpret these results different concentrations of inorganic anions (bicarbonate 100–500 mg/L, chloride 100–500 mg/L) present in aqueous media, as well as 10 mg/L organic matter in the form of humic acid (HA), were added sequentially in UPW. Results showed accelerating effects on EP degradation for the lowest concentrations tested in all cases.
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Petala A, Noe A, Frontistis Z, Drivas C, Kennou S, Mantzavinos D, Kondarides DI. Synthesis and characterization of CoO x/BiVO 4 photocatalysts for the degradation of propyl paraben. JOURNAL OF HAZARDOUS MATERIALS 2019; 372:52-60. [PMID: 29567302 DOI: 10.1016/j.jhazmat.2018.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Cobalt-promoted bismuth vanadate photocatalysts of variable cobalt content (0-1.0 wt.%) were synthesized and characterized with various techniques including BET, XRD, DRS, XPS and TEM. BiVO4 exists in the monoclinic scheelite structure, while cobalt addition improves the absorbance in the visible region although it does not affect the band gap energy of BiVO4. Cobalt exists in the form of well-dispersed Co3O4 nanocrystallites, which are in intimate contact with the much larger BiVO4 nanoparticles. Photocatalytic activity was evaluated for the degradation of propyl paraben (PP) under simulated solar radiation. The activity of pristine BiVO4 is significantly improved adding small amounts of cobalt and is maximized for the catalyst containing 0.5 wt.% Co. PP degradation in ultrapure pure water increases with increasing photocatalyst loading (100 mg/L to 1.5 g/L), and decreasing PP concentration (1600-200 μg/L). Experiments in bottled water, as well as in pure water spiked with bicarbonate and chloride ions showed little effect of non-target inorganics on degradation. Conversely, degradation is severely impeded in secondary treated wastewater. The enhancement of the photocatalytic activity of the synthesized catalysts is attributed to efficient electron-hole separation, achieved at the p-n junction formed between the p-type Co3O4 and the n-type BiVO4 semiconductors.
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Affiliation(s)
- Athanasia Petala
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Antigoni Noe
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Charalampos Drivas
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Stella Kennou
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece
| | - Dimitris I Kondarides
- Department of Chemical Engineering, University of Patras, Caratheodory 1, GR-26504 Patras, Greece.
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Nguyen TD, Cao VD, Nong LX, Nguyen VH, Bach LG, Le NTH, Luu TD, Hong SS, Lim KT, Vo DN. High Photocatalytic Performance of Pd/PdO‐Supported BiVO
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Nanoparticles for Rhodamine B Degradation under Visible LED Light Irradiation. ChemistrySelect 2019. [DOI: 10.1002/slct.201901295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Trinh Duy Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Vu Dai Cao
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Linh Xuan Nong
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Vinh Huu Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Long Giang Bach
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
| | - Nhan Thi Hong Le
- Department of Chemical EngineeringHCMC University of Technology, VNU-HCM Ho Chi Minh City Vietnam
| | - Tuan Duy Luu
- Department of Chemical EngineeringHCMC University of Technology, VNU-HCM Ho Chi Minh City Vietnam
| | - Seong Soo Hong
- Department of Display EngineeringPukyong National University Busan Korea
| | - Kwon Taek Lim
- Department of Chemical EngineeringPukyong National University Busan Korea
| | - Dai‐Viet N. Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)Nguyen Tat Thanh University Ho Chi Minh City Vietnam
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Nguyen TD, Bui QTP, Le TB, Altahtamouni TM, Vu KB, Vo DVN, Le NTH, Luu TD, Hong SS, Lim KT. Co2+ substituted for Bi3+ in BiVO4 and its enhanced photocatalytic activity under visible LED light irradiation. RSC Adv 2019; 9:23526-23534. [PMID: 35530596 PMCID: PMC9069272 DOI: 10.1039/c9ra04188e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 07/12/2019] [Indexed: 11/21/2022] Open
Abstract
We investigated the fabrication of Co-doped BiVO4 (Bi1−xCoxVO4+δ, 0.05 < x < 0.5) by the substitution of Co ions for Bi sites in BiVO4. The X-ray diffraction (XRD), Raman, and X-ray photoelectron spectroscopy (XPS) results indicated that the substitution of Co2+ ions for Bi3+ sites in BiVO4 was successful, although a change in the crystal phase of BiVO4 did not occur. UV-vis DRS and PL results suggested that the Co-incorporation could slightly improve the visible light absorption of BiVO4 and induce the separation of photoinduced electron–hole pairs; therefore, a significant enhancement of photocatalytic performance was achieved. The Bi0.8Co0.2VO4+δ sample showed superior photocatalytic activity in comparison with other samples, achieving 96.78% methylene blue (MB) removal within 180 min. In addition, the proposed mechanism of improved photocatalytic activities and the stability of the catalyst were also investigated. We investigated the fabrication of Co-doped BiVO4 (Bi1−xCoxVO4+δ, 0.05 < x < 0.5) by the substitution of Co ions for Bi sites in BiVO4.![]()
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Affiliation(s)
- Trinh Duy Nguyen
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)
- Nguyen Tat Thanh University
- Ho Chi Minh City
- Vietnam
| | - Quynh Thi Phuong Bui
- Faculty of Chemical Technology
- Ho Chi Minh City University of Food Industry
- Ho Chi Minh City
- Vietnam
| | - Tien Bao Le
- Faculty of Chemical Technology
- Ho Chi Minh City University of Food Industry
- Ho Chi Minh City
- Vietnam
| | - T. M. Altahtamouni
- Materials Science and Technology Program
- College of Arts and Sciences
- Qatar University
- Doha 2713
- Qatar
| | - Khanh Bao Vu
- NTT Hi-Tech Institute
- Nguyen Tat Thanh University
- Ho Chi Minh City
- Vietnam
| | - Dai-Viet N. Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN)
- Nguyen Tat Thanh University
- Ho Chi Minh City
- Vietnam
| | - Nhan Thi Hong Le
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Tuan Duy Luu
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Seong Soo Hong
- Department of Chemical Engineering
- Pukyong National University
- Busan
- Korea
| | - Kwon Taek Lim
- Department of Display Engineering
- Pukyong National University
- Busan
- Korea
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Samsudin MFR, Sufian S, Hameed B. Epigrammatic progress and perspective on the photocatalytic properties of BiVO4-based photocatalyst in photocatalytic water treatment technology: A review. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.051] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Fakhrul Ridhwan Samsudin M, Sufian S, Bashiri R, Muti Mohamed N, Tau Siang L, Mahirah Ramli R. Optimization of photodegradation of methylene blue over modified TiO2/BiVo4 photocatalysts: effects of total TiO2 loading and different type of co-catalyst. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.07.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Bekris L, Frontistis Z, Trakakis G, Sygellou L, Galiotis C, Mantzavinos D. Graphene: A new activator of sodium persulfate for the advanced oxidation of parabens in water. WATER RESEARCH 2017; 126:111-121. [PMID: 28934645 DOI: 10.1016/j.watres.2017.09.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/19/2017] [Accepted: 09/09/2017] [Indexed: 05/27/2023]
Abstract
Graphene was successfully employed as a catalyst for the activation of sodium persulfate, towards the effective degradation of propylparaben, an emerging micro-pollutant, representative of the parabens family. A novel process is proposed which utilizes a commercial graphene nano-powder as the catalyst and sodium persulfate as the oxidizing agent. It was found that over 95% of micro-pollutant degradation occurs within 15 min of reaction time. The effects of catalyst loading (75 mg/L to 1 g/L), sodium persulfate (SPS) concentration (10 mg/L to 1 g/L), initial solution pH (3-9) and initial paraben concentration (0.5 mg/L to 5 mg/L) were examined. Experiments were carried out in different aqueous conditions, including ultrapure water, bottled water and wastewater in order to investigate their effect on the degradation rate. The efficiency of the process was lower at complex water matrices signifying the role of organic matter as scavenger of the oxidant species. The role of radical scavengers was also investigated through the addition of methanol and tert-butanol in several concentrations, which was found to be important only in relatively high values. An experiment in which propylparaben was substituted by methylparaben was conducted and similar results were obtained. The consumption of SPS was found to be high in all pH conditions tested, surpassing 80% in near neutral environment. However, the results indicate that the sulfate radicals formed react with water in alkaline conditions, which are the optimal for the reaction, producing hydroxyl radicals which appear to be the dominant species leading to the rapid degradation of propylparaben. To the best of our knowledge, this is the first time pristine graphene has been implemented as an activator of sodium persulfate for the effective oxidation of micro-pollutants.
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Affiliation(s)
- Leonidas Bekris
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece.
| | - George Trakakis
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, PO Box 1414, GR-26504 Patras, Greece
| | - Lamprini Sygellou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology, PO Box 1414, GR-26504 Patras, Greece
| | - Costas Galiotis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece; Institute of Chemical Engineering Sciences, Foundation for Research and Technology, PO Box 1414, GR-26504 Patras, Greece
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
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Monfort O, Raptis D, Satrapinskyy L, Roch T, Plesch G, Lianos P. Production of hydrogen by water splitting in a photoelectrochemical cell using a BiVO4/TiO2 layered photoanode. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.125] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Synthesis of Bi₂S₃/BiVO₄ Heterojunction with a One-Step Hydrothermal Method Based on pH Control and the Evaluation of Visible-Light Photocatalytic Performance. MATERIALS 2017; 10:ma10080891. [PMID: 28767085 PMCID: PMC5578257 DOI: 10.3390/ma10080891] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 07/15/2017] [Accepted: 07/28/2017] [Indexed: 11/16/2022]
Abstract
The band gaps of bismuth vanadate (BiVO4) and bismuth sulfide (Bi2S3) are about 2.40 eV and 1.30 eV, respectively. Although both BiVO4 and Bi2S3 are capable of strong visible light absorption, electron–hole recombination occurs easily. To solve this problem, we designed a one-step hydrothermal method for synthesizing a Bismuth sulfide (Bi2S3)/Bismuth vanadate (BiVO4) heterojunction using polyvinylpyrrolidone K-30 (PVP) as a structure-directing agent, and 2-Amino-3-mercaptopropanoic acid (l-cysteine) as a sulfur source. The pH of the reaction solution was regulated to yield different products: when the pH was 7.5, only monoclinic BiVO4 was produced (sample 7.5); when the pH was 8.0 or 8.5, both Bi2S3 and BiVO4 were produced (samples 8.0 and 8.5); and when the pH was 9.0, only Bi2S3 was produced (sample 9.0). In sample 8.0, Bi2S3 and BiVO4 were closely integrated with each other, with Bi2S3 particles formed on the surface of concentric BiVO4 layers, but the two compounds grew separately in a pH solution of 8.5. Visible-light photocatalytic degradation experiments demonstrated that the degradation efficiency of the Bi2S3/BiVO4 heterojunction was highest when prepared under a pH of 8.0. The initial rhodamine B in the solution (5 mg/L) was completely degraded within three hours. Recycling experiments verified the high stability of Bi2S3/BiVO4. The synthesis method proposed in this paper is expected to enable large-scale and practical use of Bi2S3/BiVO4.
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