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Peng X, Wu Y, Chen L, Ma X. Responses of Vallisneria natans and Pistia stratiotes to Cu 2+ and Mn 2+ stress: Occurrence of caffeic acid and its degradation kinetics during chlorination. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 274:116209. [PMID: 38492482 DOI: 10.1016/j.ecoenv.2024.116209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 03/08/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
Macrophytes are crucial in maintaining the equilibrium of aquatic ecosystems. However, the pattern of macrophyte-derived caffeic acid (CA) release under heavy metal stress is yet to be fully understood. More importantly, due to its functional groups, CA may be a precursor to the formation of disinfection by-products, posing threats to water ecology and even safety of human drinking water. This study analyzed the responses of CA released by Vallisneria natans (V. natans) and Pistia stratiotes (P. Stratiotes) when exposed to Cu2+ and Mn2+ stress. Additionally, the CA levels in two constructed wetland ponds were detected and the degradation kinetics of CA during chlorination were investigated. Results indicated that CA occurred in two constructed wetland ponds with the concentrations of 44.727 μg/L (planted with V. natans) and 61.607 μg/L (planted with P. Stratiotes). Notably, heavy metal stress could significantly affect CA release from V. natans and P. Stratiotes. In general, under Cu2+ stress, V. natans secreted far more CA than under Mn2+ stress, the level could reach up to 435.303 μg/L. However, compared to V. natans, P. Stratiotes was less affected by Cu2+ and Mn2+ stress, releasing a maximum CA content of 55.582 μg/L under 5 mg/L Mn2+ stress. Aquatic macrophytes secreted more CA in response to heavy metal stresses and protected macrophytes from harmful heavy metals. CA degradation followed the pseudo first-order kinetics model, and the chlorination of CA conformed to a second-order reaction. The reaction rate significantly accelerated as NaClO, pH, temperature and Br- concentration increased. A new pathway for CA degradation and a new DBP 2, 2, 3, 3-tetrachloropropanal were observed. These findings pointed at a new direction into the adverse effect of CA, potentially paving the way for new strategies to solve drinking water safety problems.
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Affiliation(s)
- Xiaoyu Peng
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Yonggui Wu
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystem Observation and Research Station, Ministry of Education, Guizhou University, Guiyang 550025, China; Institute of Applied Ecology, Guizhou University, Guiyang, Guizhou 550025, China.
| | - Lixia Chen
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Xiao Ma
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
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2
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Theerthagiri S, Krishnan S, Deivanayagam P, Muthiah C, Kannaiyan D.
TiO
2
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graphene dispersed sulfonated polyphenylenesulfide sulfone nanocomposites for medium temperature
PEMFCs. POLYM ADVAN TECHNOL 2023. [DOI: 10.1002/pat.6047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
| | | | - Paradesi Deivanayagam
- Department of Chemistry SRM Institute of Science and Technology Kattankulathur 603203 India
| | - Chandran Muthiah
- Department of Zoology Thiruvalluvar University Vellore 632115 India
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3
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Noorimotlagh Z, Dehvari M, Mirzaee SA, Jaafarzadeh N, Martínez SS, Amarloei A. Efficient sonocatalytic degradation of orange II dye and real textile wastewater using peroxymonosulfate activated with a novel heterogeneous TiO 2–FeZn bimetallic nanocatalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2023. [PMCID: PMC9999323 DOI: 10.1007/s13738-023-02780-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
TiO2–FeZn nanocatalyst combined with sonolysis were used to activate peroxymonosulfate (PMS) as a highly efficient advanced oxidation process (US/TiO2–FeZn/PMS) for the decoloration of orange II dye (OII) and real textile wastewater. The characterization of the as-synthesized NPs was performed by SEM, FTIR, EDX and XRD analyses. Optimal experimental conditions of operational parameters were obtained: pH = 3, 15 mg/L initial OII concentration, 0.2 g/L PMS, 0.7 g/L nanocatalyst dosing, and 300 W ultrasonic power. The decolorization was observed to increase with increasing the dose of nanocatalyst and the ultrasonic power, and with decreasing pH (under acidic conditions). Under optimal experimental conditions, decolorization and COD removal of textile wastewater were 99.9% and 74.6%, respectively, at 40 min. The TiO2–FeZn/PMS/US as a novel process exhibited a higher removal of OII (95%) than TiO2 NPs/PMS/US process (54%). The OII removal efficiency by the different processes decreased in the following order: TiO2–FeZn/US/PMS > TiO2–FeZn/PMS > TiO2–FeZn/US > TiO2 /US/PMS > US/PMS > TiO2–FeZn > PMS > US. The recyclability study revealed that the process could be reused up to three consecutive cycles. The current US/nanocatalyst/PMS system was concluded to be an efficient, reusable and stable nanocatalyst for the oxidation of textile dyes.
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Affiliation(s)
- Zahra Noorimotlagh
- Health and Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Mahboobeh Dehvari
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyyed Abbas Mirzaee
- Health and Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran ,Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
| | - Neemat Jaafarzadeh
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Susana Silva Martínez
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, Mexico
| | - Ali Amarloei
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
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4
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Srivastava V, Choubey AK. Novel PVA/chitosan composite membrane modified using bio-fabricated α-MnO 2 nanoparticles for photocatalytic degradation of cationic dyes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:35838-35852. [PMID: 36538223 DOI: 10.1007/s11356-022-24634-w] [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: 03/04/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
By integrating the benefits of poly vinyl alcohol (PVA) and chitosan (CS) with α-MnO2 nanoparticles (MNPs), a novel type of nano-polymer composite (PVA/CS-MNP) membrane was synthesized through a simple and facile casting method. In this proposed work, the membrane prepared was used for removal of organic textile dyes from their aqueous solutions. The as-synthesized PVA/CS-MNP membrane was examined using different analytical techniques such as Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM), and mechanical properties of material was also studied. Two cationic dyes, methylene blue (MB) and eosin yellow (EY), were chosen as template dyes to be removed from industrial waste water. These dyes were degraded by carrying out a reaction in which the synthesized membrane was used as a photocatalyst. The study of kinetics revealed that the reaction process followed pseudo-first-order kinetics. The efficiency of catalyst and the rate of reaction were also examined by varying parameters such as pH, initial concentration of dyes, and composition of membrane. The maximum efficiency of catalyst was observed at pH 12 as more than 95% of dyes degraded within 1 h of time span. The catalyst was found to be reusable as its efficiency did not deteriorate even after using it for several times. Such functional membrane having higher stability, low production cost, excellent efficiency to degrade dyes, and good recyclability are promising material for distinctly effective deletion of organic dyes from waste water.
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Affiliation(s)
- Vartika Srivastava
- Department of Sciences and Humanities, Rajiv Gandhi Institute of Petroleum Technology, Amethi, Uttar Pradesh, 229304, India.
| | - Abhay Kumar Choubey
- Department of Sciences and Humanities, Rajiv Gandhi Institute of Petroleum Technology, Amethi, Uttar Pradesh, 229304, India
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5
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Senthil T, Prabukanthan P, Paradesi D, Dinakaran K.
TiO
2
nanoparticle enhanced high temperature proton conductivity in hyperbranched sulfonated polyarylene aliphatic ketones for proton exchange membrane fuel cell applications. J Appl Polym Sci 2023. [DOI: 10.1002/app.53737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
| | | | - Deivanayagam Paradesi
- Department of Chemistry SRM Institute of Science and Technology Kattankulathur Tamilnadu India
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6
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Nayebi M, Faraji A, Bahadoran A, Othman ZJ, Arghavani S, Kargar PG, Sajjadinezhad SM, Varma RS. TiO 2/g-C 3N 4/SO 3H(IL): Unique Usage of Ionic Liquid-Based Sulfonic Acid as an Efficient Photocatalyst for Visible-Light-Driven Preparation of 5-HMF from Cellulose and Glucose. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8054-8065. [PMID: 36719302 DOI: 10.1021/acsami.2c20480] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Upgrading of biomass wastes to value-added materials has been incessantly pursued worldwide with diverse applications, especially deploying photocatalytic composites encompassing metal oxides with acidic and carbon compounds. Herein, the fabrication of a morphologically unique acidic catalyst encompassing a two-dimensional (2D) TiO2/g-C3N4 heterojunction feature is described for the generation of 5-hydroxymethylfurfural (5-HMF), which exploits the acidic/ionic liquid (IL) bifunctional photocatalysis under visible light. The structural integrity of the synthesized TiO2/g-C3N4/SO3H(IL) was corroborated by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy-energy-dispersive spectroscopy (EDX-EDS), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), UV-vis, Tauc plots, transmission electron microscopy (TEM), and Brunauer-Emmett-Teller-Barrett-Joyner-Halenda (BET-BJH) analyses. Keeping environmental impact in mind, there are compelling advantages in the development of bio-derived pathways to access ILs from natural renewable resources. The outcomes of environmental assessments have revealed that the incorporation of TiO2 in g-C3N4 and ClSO3H can reduce the probability of recombination due to ionic charges present, therefore enhancing the photocatalytic activity via the transformation of cellulose and glucose to produce 5-HMF in higher yields, with the optimum conditions being reaction in water under a blue light-emitting diode (LED), at 100 °C, for 1-1.5 h. The main advantages of this production method include minimum number of synthetic steps as well as ample availability of and easy access to primary ingredients. While a significant volume of 5-HMF was produced under blue light-emitting diode (LED) radiation, the selectivity was drastically reduced in the dark. The salient attributes of the catalyst comprise stability in air, robustness, reusability, and its overall superior activity that is devoid of hazardous additives or agents. This inimitable method has uncovered a newer strategy for enhancing the photocatalytic attributes of deployed semiconducting materials for numerous photocatalytic functions while adhering to the tenets of environmental friendliness.
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Affiliation(s)
- Milad Nayebi
- Chemical Engineering Department, Amirkabir University of Technology, Tehran15875-4413, Iran
| | - Amir Faraji
- Construction Project Management Department, Faculty of Architecture, Khatam University, Tehran1991633357, Iran
- Visiting Fellow, Western Sydney University, Sydney2751, Australia
| | - Ashkan Bahadoran
- State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai200240, China
| | - Zhian Jamal Othman
- Department of Physical Education and Sport Sciences, Cihan University-Erbil, Erbil44001, Iraq
| | - Soheila Arghavani
- Department of Chemistry, Faculty of Sciences, University of Birjand, Birjand97175-615, Iran
| | - Pouya Ghamari Kargar
- Department of Chemistry, Faculty of Sciences, University of Birjand, Birjand97175-615, Iran
| | - Seyed Mehrzad Sajjadinezhad
- Polymer Chemistry Research Laboratory, Faculty of Chemistry, Shahid Beheshti University, Tehran19839-63113, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, ̌Slechtitelů 27, Olomouc783 71, Czech Republic
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7
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Jorge N, Teixeira AR, Fernandes JR, Oliveira I, Lucas MS, Peres JA. Degradation of Agro-Industrial Wastewater Model Compound by UV-A-Fenton Process: Batch vs. Continuous Mode. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1276. [PMID: 36674030 PMCID: PMC9858821 DOI: 10.3390/ijerph20021276] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 05/28/2023]
Abstract
The degradation of a model agro-industrial wastewater phenolic compound (caffeic acid, CA) by a UV-A-Fenton system was investigated in this work. Experiments were carried out in order to compare batch and continuous mode. Initially, batch experiments showed that UV-A-Fenton at pH 3.0 (pH of CA solution) achieved a higher generation of HO•, leading to high CA degradation (>99.5%). The influence of different operational conditions, such as H2O2 and Fe2+ concentrations, were evaluated. The results fit a pseudo first-order (PFO) kinetic model, and a high kinetic rate of CA removal was observed, with a [CA] = 5.5 × 10−4 mol/L, [H2O2] = 2.2 × 10−3 mol/L and [Fe2+] = 1.1 × 10−4 mol/L (kCA = 0.694 min−1), with an electric energy per order (EEO) of 7.23 kWh m−3 order−1. Under the same operational conditions, experiments in continuous mode were performed under different flow rates. The results showed that CA achieved a steady state with higher space-times (θ = 0.04) in comparison to dissolved organic carbon (DOC) removal (θ = 0−0.020). The results showed that by increasing the flow rate (F) from 1 to 4 mL min−1, the CA and DOC removal rate increased significantly (kCA = 0.468 min−1; kDOC = 0.00896 min−1). It is concluded that continuous modes are advantageous systems that can be adapted to wastewater treatment plants for the treatment of real agro-industrial wastewaters.
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Affiliation(s)
- Nuno Jorge
- Escuela Internacional de Doctorado (EIDO), Campus da Auga, Campus Universitário de Ourense, Universidade de Vigo, As Lagoas, 32004 Ourense, Spain
- Centro de Química de Vila Real (CQVR), Departamento de Química, Universidade de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Ana R. Teixeira
- Centro de Química de Vila Real (CQVR), Departamento de Química, Universidade de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
| | - José R. Fernandes
- Centro de Química de Vila Real (CQVR), Departamento de Física, Universidade de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Ivo Oliveira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Marco S. Lucas
- Centro de Química de Vila Real (CQVR), Departamento de Química, Universidade de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
| | - José A. Peres
- Centro de Química de Vila Real (CQVR), Departamento de Química, Universidade de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
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8
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Ren J, Yao Z, Wei Q, Wang R, Liu Y, Wang L, Zheng K, Wang S, Guo H, Niu Z, Wang J, Han J, Lü L, Zhen Y, Li J. Degradation of ferulic acid and caffeic acid by dielectric barrier discharge plasma combined with Mn/CoOOH/activated carbon fiber. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Luo B, Wu C, Zhang F, Wang T, Yao Y. Preparation of Porous Ellipsoidal Bismuth Oxyhalide Microspheres and Their Photocatalytic Performances. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6035. [PMID: 36079416 PMCID: PMC9457083 DOI: 10.3390/ma15176035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Well-dispersed and uniform porous ellipsoidal-shaped bismuth oxyhalides (nominal composition: 80%BiOCl/20%BiOI) microspheres were obtained by a facile solvothermal method, in which process the use of polyvinylpyrrolidone (PVP) as template agent was found to be crucial. At 150 °C, elliptical porous particles with a particle size of 0.79 μm were formed. Instead of forming solid solutions, the study of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) shows that the prepared 80%BiOCl/20%BiOI microspheres are composite of BiOCl and BiOI in nature and the obtained crystallite size is about 5.6 nm. The optical bandgap of 80%BiOCl/20%BiOI was measured to be 2.93 eV, which is between the bandgap values of BiOCl and BiOI. The 80%BiOCl/20%BiOI microspheres were able to decompose various organic dyes (rhodamine B-RhB, methyl orange-MO, methylene blue-MB, methyl violet-MV) under an illuminated condition with the degradation rate in the order of RhB > MB > MV > MO, and 98% of RhB can be degraded in 90 min. Radical scavenger tests showed that photogenerated holes are the main active species for the photocatalytic decomposition of all of the tested organic dyes. Our results show that the obtained porous ellipsoidal-shaped 80%BiOCl/20%BiOI microspheres are promising for the degradation of various organic pollutants under the illumination of visible light.
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Affiliation(s)
- Bing Luo
- China Southern Power Grid, Guangzhou 510623, China
| | - Canfeng Wu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Fuzeng Zhang
- China Southern Power Grid, Guangzhou 510623, China
| | | | - Yingbang Yao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
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10
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Ashfaq M, Talreja N, Chauhan D, Rodríguez CA, Mera AC, Viswanathan MR. A facile synthesis of CuBi 2O 4 hierarchical dumbbell-shaped nanorod cluster: a promising photocatalyst for the degradation of caffeic acid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:53873-53883. [PMID: 35292897 DOI: 10.1007/s11356-022-19592-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
The present study reports on the synthesis of Cu-bismuth oxide (CuBi2O4)-based nanorods by using a simple co-precipitation method for the photocatalytic degradation of caffeic acid (CA). The incorporation of Cu metal ions during the synthesis of CuBi2O4 nanorods might be advantageous to avoid the aggregation and control the leach out of metal ions. The calculated bandgap values of ~ 1.04, 1.02, and 0.94 eV were observed for CuBi2O4 with different amounts of Cu 1.0, 0.50, and 0.25 g, respectively. Varying the quantity of Cu metal ions easily tuned the bandgap value within the CuBi2O4-based nanorods. However, a further decrease in the bandgap value increased the recombination rate, and the less photocatalyst performance was observed. The CA degradation could be explained based on the species distribution. The CA pKa was mainly located between pKa1 and pKa2 of 4.43 and 8.6, respectively. The Cu within the CuBi2O4-based nanorods changed the electronic properties and the antibacterial ability. Therefore, the synthesized CuBi2O4-based nanorod cluster might be a promising material for the photocatalytic degradation of CA.
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Affiliation(s)
- Mohammad Ashfaq
- Multidisciplinary Research Institute for Science and Technology, IIMCT, University of La Serena, 1015 Juan Cisternas St, La Serena, Chile.
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepción, 4070409, Concepción, Chile.
- School of Life Science, BS Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, India.
| | - Neetu Talreja
- Multidisciplinary Research Institute for Science and Technology, IIMCT, University of La Serena, 1015 Juan Cisternas St, La Serena, Chile
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepción, 4070409, Concepción, Chile
- Faculty of Science and Technology, Department of Sciences, Alliance University, Bengaluru, Karnataka, 562106, India
| | - Divya Chauhan
- Department of Chemical and Biomedical Engineering, University of South Florida, Tampa, FL, USA
| | - C A Rodríguez
- Multidisciplinary Research Institute for Science and Technology, IIMCT, University of La Serena, 1015 Juan Cisternas St, La Serena, Chile
| | - Adriana C Mera
- Multidisciplinary Research Institute for Science and Technology, IIMCT, University of La Serena, 1015 Juan Cisternas St, La Serena, Chile
- Departamento de Química, Laboratorio Central de Análisis Químico, Universidad de La Serena, La Serena, Chile
| | - Mangalaraja Ramalinga Viswanathan
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Faculty of Engineering, University of Concepción, 4070409, Concepción, Chile.
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Yang Y, Li X, Zhu H, Xu X, Bao L. Chemical removal of m-cresol: a critical review. REV CHEM ENG 2021. [DOI: 10.1515/revce-2021-0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
m-Cresol containing wastewater has generally become a globally environmental issue due to its refractory and high toxicity towards plants, animals and human being. The development of m-cresol related industries increases the risk of excessive m-cresol discharge, making high efficiency methods to treat m-cresol an urgent topic in both economic and environmental aspects. This review focuses on the chemical treatment methods of m-cresol wastewater, including chemical adsorption, photocatalytic degradation, electrocatalytic degradation and catalytic wet oxidation. The efficiency, cost and process optimization of different methods are discussed in detail. Chemical adsorption is convenient but has relatively low efficiency. Photocatalytic degradation is an easily operated technology with high efficiency, but the selection of catalyst is too limited and the cost of light source is relatively high. Electrocatalytic degradation is time-saving but energy-intensive, and operational difficulty brings a barrier to industrialization. Catalytic wet oxidation (CWO) is highly effective and easily modified, but the performance and stability of catalysts are still very moderate. Following this, the selection and application of different methods regarding the requirement of actual environment are analyzed. Finally, a perspective on the opportunities and development for efficient m-cresol removal method is given.
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Affiliation(s)
- Yi Yang
- College of Education for the Future, Beijing Normal University , Zhuhai 519087 , P. R. China
| | - Xiyi Li
- Department of Chemical Engineering , University College London , Torrington Place , London , WC1E 7JE , UK
| | - Huiqi Zhu
- College of Education for the Future, Beijing Normal University , Zhuhai 519087 , P. R. China
| | - Xuhui Xu
- College of Education for the Future, Beijing Normal University , Zhuhai 519087 , P. R. China
| | - Lulu Bao
- College of Education for the Future, Beijing Normal University , Zhuhai 519087 , P. R. China
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12
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Ren J, Zhen Y, Wang J, Li J. Catalytic degradation of caffeic acid by DBD plasma and Mn doped cobalt oxyhydroxide catalyst. CHEMOSPHERE 2021; 275:130101. [PMID: 33984910 DOI: 10.1016/j.chemosphere.2021.130101] [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: 12/16/2020] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
In this study, caffeic acid (CA) was degraded by electrical discharge plasma combined with Mn doped CoOOH catalyst. Doping of Mn significantly improve the catalytic activity of CoOOH. CA degradation efficiency was 75.6% with dielectric barrier discharge treatment for 10 min, and it reached 97% using CoOOH as the catalyst at the same treatment time. CA was 100% degraded with only 8 min using Mn/CoOOH as the catalyst. The introduction of Mn into the lattice of CoOOH induced the formation of oxygen vacancy, causing part of coordinate number of Co decreased from 6 to 5, and thus produces unsaturated Co to be the Lewis acid sites. Lewis acid sites (unsaturated Co) could coordinate with O3 and H2O2 and break their chemical bonds to form O and -OH. Assisting in the conversion of O3 to ·OH was the main role of H2O2 in the catalytic process. The degradation products and pathway of CA were studied by three-dimensional fluorescence, liquid chromatograph-mass spectrometer and density functional theory calculations.
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Affiliation(s)
- Jingyu Ren
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China.
| | - Yanzhong Zhen
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jian Wang
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jie Li
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China
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13
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Highly photocatalytic electrospun Zr/Ag Co-doped titanium dioxide nanofibers for degradation of dye. J Colloid Interface Sci 2021; 603:594-603. [PMID: 34217947 DOI: 10.1016/j.jcis.2021.06.109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/23/2022]
Abstract
Photodegradation has attracted much attention in wastewater treatment owing to its nontoxicity, high efficiency, and mild reaction conditions. Recently, Zr/Ag co-doped titanium dioxide (TiO2) nanoparticles have been synthesized and showed high photocatalytic activity for dye, but these nanoparticles tend to aggregate together, leading to reduced catalytic sites, which is disadvantageous for their practical application. Therefore, Zr/Ag-co-doped TiO2 nanofibers were prepared using an electrospinning method. For comparison, TiO2 nanofibers and Zr-doped TiO2 nanofibers were also fabricated. The synthesized catalysts were characterized by X-ray diffraction, UV-visible absorption spectroscopy, diffuse reflectance spectroscopy, scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, zeta potentials, photoluminescence, and electrochemical impedance spectroscopy. Compared with TiO2 nanofibers and Zr-doped TiO2, Zr/Ag co-doped TiO2 nanofibers have significantly enhanced photocatalytic activity for Congo red owing to the synergetic effects of Zr, Ag, and Ti. The photodegradation of Congo red followed a pseudo-first-order kinetic model. The optimal Zr/Ag-co-doped TiO2 nanofibers with 2 wt% Ag and a mass ratio of ZrO2 to TiO2 of 1:9 exhibits the best photocatalytic activity and the corresponding kinetic constant of 0.0405 min-1 is 12 times higher than that of TiO2 nanofibers. This work will provide data and a technology base for the synthesis of future materials with high photocatalytic activity.
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Validated Stability-Indicating GC-MS Method for Characterization of Forced Degradation Products of Trans-Caffeic Acid and Trans-Ferulic Acid. Molecules 2021; 26:molecules26092475. [PMID: 33922767 PMCID: PMC8123059 DOI: 10.3390/molecules26092475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/13/2021] [Accepted: 04/19/2021] [Indexed: 01/04/2023] Open
Abstract
When dealing with simple phenols such as caffeic acid (CA) and ferulic acid (FA), found in a variety of plants, it is very important to have control over the most important factors that accelerate their degradation reactions. This is the first report in which the stabilities of these two compounds have been systematically tested by exposure to various different factors. Forced degradation studies were performed on pure standards (trans-CA and trans-FA), dissolved in different solvents and exposed to different oxidative, photolytic and thermal stress conditions. Additionally, a rapid, sensitive, and selective stability-indicating gas chromatographic-mass spectrometric method was developed and validated for determination of trans-CA and trans-FA in the presence of their degradation products. Cis-CA and cis-FA were confirmed as the only degradation products in all the experiments performed. All the compounds were perfectly separated by gas chromatography (GC) and identified using mass spectrometry (MS), a method that additionally elucidated their structures. In general, more protic solvents, higher temperatures, UV radiation and longer storage times led to more significant degradation (isomerization) of both trans-isomers. The most progressive isomerization of both compounds (up to 43%) was observed when the polar solutions were exposed to daylight at room temperature for 1 month. The method was validated for linearity, precision as repeatability, limit of detection (LOD) and limit of quantitation (LOQ). The method was confirmed as linear over tested concentration ranges from 1−100 mg L−1 (r2s were above 0.999). The LOD and LOQ for trans-FA were 0.15 mg L−1 and 0.50 mg L−1, respectively. The LOD and LOQ for trans-CA were 0.23 mg L−1 and 0.77 mg L−1, respectively.
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15
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Ren J, Li J, Lv L, Wang J. Degradation of caffeic acid by dielectric barrier discharge plasma combined with Ce doped CoOOH catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123772. [PMID: 33254783 DOI: 10.1016/j.jhazmat.2020.123772] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, Ce doped CoOOH was used as the catalyst for caffeic acid (CA) degradation by dielectric barrier discharge (DBD) plasma. The treatment performance and catalytic mechanism were studied by a series of experiments and density functional theory (DFT) simulations. The results show that the doping amounts of Ce significantly influenced the catalytic performance of CoOOH in DBD plasma, and the catalytic effect reached maximum when the molar ratio of Ce to Co was 1:9. CA was 100 % degraded by Ce1/Co9OOH/DBD with 10 min treatment, while only 75.6 % of CA was degraded by 10 min DBD treatment. Transformation of O3 and H2O2 to ⋅OH was mainly responsible for the catalytic effect. The content of oxygen vacancies and unsaturated Co (Lewis acid sites) of CoOOH was increased by doping Ce according to the results of experiments and simulations, and the change was conducive to the catalytic reactions. DFT simulations also indicated that DBD generated O3 and H2O2 were decomposed to O atoms, OH groups and free OH by Ce/CoOOH. The presence of reductive species in DBD plasma was confirmed, and ⋅H was a kind of important reactive specie for CA degradation. CA degradation pathway was proposed based on the detected degradation products.
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Affiliation(s)
- Jingyu Ren
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China.
| | - Jie Li
- School of Electrical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Lei Lv
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
| | - Jian Wang
- School of Petroleum Engineering and Environmental Engineering, Yan'an University, Yan'an, 716000, China; Yan'an Key Laboratory of Environmental Monitoring and Remediation, Yan'an, 716000, China
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16
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Abstract
TiO2 has been widely used as a photocatalyst and an electrode material toward the photodegradation of organic pollutants and electrochemical applications, respectively. However, the properties of TiO2 are not enough up to meet practical needs because of its intrinsic disadvantages such as a wide bandgap and low conductivity. Incorporation of carbon into the TiO2 lattice is a promising tool to overcome these limitations because carbon has metal-like conductivity, high separation efficiency of photogenerated electron/hole pairs, and strong visible-light absorption. This review would describe and discuss a variety of strategies to develop carbon-doped TiO2 with enhanced photoelectrochemical performances in environmental, energy, and catalytic fields. Emphasis is given to highlight current techniques and recent progress in C-doped TiO2-based materials. Meanwhile, how to tackle the challenges we are currently facing is also discussed. This understanding will allow the process to continue to evolve and provide facile and feasible techniques for the design and development of carbon-doped TiO2 materials.
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Noorimotlagh Z, Kazeminezhad I, Jaafarzadeh N, Ahmadi M, Ramezani Z. Improved performance of immobilized TiO2 under visible light for the commercial surfactant degradation: Role of carbon doped TiO2 and anatase/rutile ratio. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.08.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization. Catalysts 2019. [DOI: 10.3390/catal9121007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Spherical photocatalyst based on ordered mesoporous carbon and graphitic carbon nitride with core/shell structure (CS/GCN) was successfully synthesized via facile electrostatic self-assembly strategy. The photocatalytic properties of the hybrid were evaluated by the decomposition of Acid Red 18 under simulated solar light irradiation in comparison to the bulk graphitic carbon nitride (GCN). The results clearly revealed that coupling of carbon nitride with mesoporous carbon allows the catalyst to form with superior photocatalytic performance. The photoactivity of CS/GCN was over nine times higher than that of pristine GCN. Introducing mesoporous carbon into GCN induced higher surface area of the heterojunction and also facilitated the contact surface between the two phases. The synergistic effect between those two components enhanced the visible light-harvesting efficiency and improved photoinduced charge carrier generation, and consequently their proper separation. The electrochemical behavior of the obtained composite was also evaluated by electrochemical impedance, transient photocurrent response and linear sweep potentiometry measurements. The results confirmed that transport and separation of charge carriers in the hybrid was enhanced in comparison to the reference bulk graphitic carbon nitride. Detailed electrochemical, photoluminescence and radical scavenger tests enabled determination of the possible mechanism of photocatalytic process. This work presents new insights to design a core/shell hybrid through the simple preparation process, which can be successfully used as an efficient photocatalyst for the treatment of wastewater containing dyes under solar light irradiation.
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Hernández-Gordillo A, Bizarro M, Gadhi TA, Martínez A, Tagliaferro A, Rodil SE. Good practices for reporting the photocatalytic evaluation of a visible-light active semiconductor: Bi2O3, a case study. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00038k] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of dyes to evaluate visible-light photocatalysts requires a proper determination of the contribution from the competing processes: adsorption, sensitization, photobleaching and degradation.
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Affiliation(s)
| | - Monserrat Bizarro
- Instituto de Investigaciones en Materiales
- Universidad Nacional Autónoma de México
- Coyoacán
- Mexico
| | - Tanveer A. Gadhi
- U.S. Pakistan Center for Advanced Studies in Water (USPCASW)
- Mehran, University of Engineering and Technology
- Jamshoro 76062
- Pakistan
| | - Ana Martínez
- Instituto de Investigaciones en Materiales
- Universidad Nacional Autónoma de México
- Coyoacán
- Mexico
| | - Alberto Tagliaferro
- Department of Applied Science and Technology
- Politecnico di Torino
- Italy
- UOIT
- Canada
| | - Sandra E. Rodil
- Instituto de Investigaciones en Materiales
- Universidad Nacional Autónoma de México
- Coyoacán
- Mexico
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20
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Niu B, Wang X, Wu K, He X, Zhang R. Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1910. [PMID: 30304763 PMCID: PMC6213616 DOI: 10.3390/ma11101910] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 12/11/2022]
Abstract
Mesoporous materials are materials with high surface area and intrinsic porosity, and therefore have attracted great research interest due to these unique structures. Mesoporous titanium dioxide (TiO₂) is one of the most widely studied mesoporous materials given its special characters and enormous applications. In this article, we highlight the significant work on mesoporous TiO₂ including syntheses and applications, particularly in the field of photocatalysis, energy and biology. Different synthesis methods of mesoporous TiO₂-including sol⁻gel, hydrothermal, solvothermal method, and other template methods-are covered and compared. The applications in photocatalysis, new energy batteries and in biological fields are demonstrated. New research directions and significant challenges of mesoporous TiO₂ are also discussed.
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Affiliation(s)
- Ben Niu
- School of Materials Science and Engineering, Energy Polymer Research Center, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, China.
| | - Xin Wang
- School of Materials Science and Engineering, Energy Polymer Research Center, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, China.
| | - Kai Wu
- School of Materials Science and Engineering, Energy Polymer Research Center, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, China.
| | - Xianru He
- School of Materials Science and Engineering, Energy Polymer Research Center, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, China.
| | - Rui Zhang
- Institute für Physik, Universität Rostock, Albert-Einstein-Str. 23⁻24, 18051 Rostock, Germany.
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21
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Gilja V, Vrban I, Mandić V, Žic M, Hrnjak-Murgić Z. Preparation of a PANI/ZnO Composite for Efficient Photocatalytic Degradation of Acid Blue. Polymers (Basel) 2018; 10:E940. [PMID: 30960865 PMCID: PMC6403582 DOI: 10.3390/polym10090940] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/10/2018] [Accepted: 08/18/2018] [Indexed: 11/24/2022] Open
Abstract
Polyaniline/zinc oxide (PANI/ZnO) composite photocatalysts were prepared from neutral media by in situ chemical oxidation of aniline (ANI) in the presence of different amounts of diethylene glycol (DEG). The PANI/ZnO composite photocatalysts were synthesized to efficiently remove organic dye (acid blue, AB25) from model wastewater. The PANI/ZnO composite photocatalysts were studied with the intention of efficient removal of organic dye (acid blue, AB25) from wastewater to obtain low-cost heterogeneous catalysts that offer high catalytic activity and stability. The conductive PANI polymer, which absorbs Vis irradiation, was used in this work as ZnO absorbs only ultraviolet (UV) irradiation; thus, the composite photocatalysts' activity was broadened into the Vis region. Characterization of the composite photocatalysts was done by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, electric conductivity, UV-Vis spectroscopy, and by specific surface area (SBET) measurements. The composites' photocatalytic activity under solar irradiation was validated by monitoring degradation of the AB25 dye. This study presented that it was possible both to prepare PANI and to prevent ZnO dissolution if in situ polymerization starts from neutral media with the addition of DEG. Additionally, efficient removal of AB25 dye, about 90% in 60 min, was achieved. The first-order rate constants of the photodegradation of AB25 by PANI/ZnO 0.02/0.024/0.04 DEG (and pure ZnO)) were computed to be 0.0272/0.0281/0.0325 (and 0.0062) min-1, indicating that the morphology and surface of the photocatalysts have significantly influenced the catalytic activity.
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Affiliation(s)
- Vanja Gilja
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
| | - Ivan Vrban
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
| | - Vilko Mandić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
| | - Mark Žic
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Zlata Hrnjak-Murgić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.
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22
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Ltaïef AH, Sabatino S, Proietto F, Ammar S, Gadri A, Galia A, Scialdone O. Electrochemical treatment of aqueous solutions of organic pollutants by electro-Fenton with natural heterogeneous catalysts under pressure using Ti/IrO 2-Ta 2O 5 or BDD anodes. CHEMOSPHERE 2018; 202:111-118. [PMID: 29558664 DOI: 10.1016/j.chemosphere.2018.03.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/06/2018] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
The treatment of toxic organic pollutants by electro-Fenton (EF) presents some drawbacks such as the necessity to work at low pH and the low solubility of oxygen in water contacted with air or oxygen at room pressure that results often in slow and relatively low abatements. Here, the coupled adoption of natural heterogeneous catalysts and of relatively high pressure was proposed in order to improve the performances of EF for the treatment of organic pollutants. Caffeic acid (CA) and 3-chlorophenol were used as model resistant organic pollutants. EF process was performed using both conventional homogeneous FeSO4 and natural heterogeneous catalysts (pyrite, chalcopyrite, Fe2O3 and Fe3O4) as iron catalysts and oxygen at various pressures in the absence or in the presence of BDD anode. The effect of the nature of the catalyst, the oxygen pressure, the current density and the catalyst load was widely investigated in order to optimize the process. It was shown that the coupled utilization of a natural heterogeneous catalyst such as chalcopyrite and a relatively high pressure allows to obtain the total removal of CA and a high removal of the TOC (about 75%) in short times (2 h) with relatively high current efficiencies using an Iridium based anode. In the case of 3-chlorophenol, the utilization of a BDD anode was necessary to achieve a high removal of the pollutant and the TOC. It was shown that the removal of 3-chlorophenol can be effectively performed in different water bodies and with different initial concentrations of 3-chlorophenol.
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Affiliation(s)
- Aziza Hadj Ltaïef
- Electrochemistry, Materials and Environment, Faculty of Sciences of Gabes, Erriadh city, 6072 Gabes, Italy
| | - Simona Sabatino
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo 90128, Italy
| | - Federica Proietto
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo 90128, Italy
| | - Salah Ammar
- Electrochemistry, Materials and Environment, Faculty of Sciences of Gabes, Erriadh city, 6072 Gabes, Italy
| | - Abdellatif Gadri
- Electrochemistry, Materials and Environment, Faculty of Sciences of Gabes, Erriadh city, 6072 Gabes, Italy
| | - Alessandro Galia
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo 90128, Italy
| | - Onofrio Scialdone
- Dipartimento dell'Innovazione Industriale e Digitale, Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Palermo 90128, Italy.
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23
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Analysis of Indium Oxidation State on the Electronic Structure and Optical Properties of TiO₂. MATERIALS 2018; 11:ma11060952. [PMID: 29874828 PMCID: PMC6025419 DOI: 10.3390/ma11060952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 11/24/2022]
Abstract
Due to the high formation energy of Indium interstitial defect in the TiO2 lattice, the most probable location for Indium dopant is substitutional sites. Replacing Ti by In atom in the anatase TiO2 shifted the absorption edge of TiO2 towards visible regime. Indium doping tuned the band structure of TiO2 via creating In 5p states. The In 5p states are successfully coupled with the O 2p states reducing the band gap. Increasing In doping level in TiO2 improved the visible light absorption. Compensating the charge imbalance by oxygen vacancy provided compensated Indium doped TiO2 model. The creation of oxygen vacancy widened the band gap, blue shifted the absorption edge of TiO2 and declined the UV light absorption. The 2.08% In in TiO2 is the optimal Indium doping concentration, providing suitable band structure for the photoelectrochemical applications and stable geometrical configuration among the simulated models. Our results provide a reasonable explanation for the improved photoactivity of Indium doped TiO2.
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24
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Ali H, Jana NR. Plasmonic photocatalysis: complete degradation of bisphenol A by a gold nanoparticle-reduced graphene oxide composite under visible light. Photochem Photobiol Sci 2018; 17:628-637. [PMID: 29697134 DOI: 10.1039/c8pp00012c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Bisphenol A is a well-known endocrine disruptor that comes from plastic/epoxy resin-based consumer products, pollutes our environment and is responsible for various human diseases. Thus, its removal from water/food/the environment is becoming a challenging issue. Here we report the visible light photocatalytic degradation of bisphenol A using a gold nanoparticle based composite with reduced graphene oxide. The nanocomposite captures visible light and produces hydroxyl radicals that oxidize bisphenol A into smaller organic fragments such as phenol derivatives and aliphatic aldehydes/ketones. The composition of the nanocomposite has been optimized for most efficient degradation of bisphenol A under visible light and the approach may be extended for the sunlight-based removal of bisphenol A from water/food/the environment.
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Affiliation(s)
- Haydar Ali
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata-700032, India.
| | - Nikhil R Jana
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata-700032, India.
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25
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Noorimotlagh Z, Kazeminezhad I, Jaafarzadeh N, Ahmadi M, Ramezani Z, Silva Martinez S. The visible-light photodegradation of nonylphenol in the presence of carbon-doped TiO 2 with rutile/anatase ratio coated on GAC: Effect of parameters and degradation mechanism. JOURNAL OF HAZARDOUS MATERIALS 2018; 350:108-120. [PMID: 29459291 DOI: 10.1016/j.jhazmat.2018.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 01/25/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Zahra Noorimotlagh
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Iraj Kazeminezhad
- Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran; Center for Research on Laser and Plasma, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Neemat Jaafarzadeh
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Mehdi Ahmadi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Zahra Ramezani
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Susana Silva Martinez
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, Mexico.
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26
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Enhanced aqueous adsorption and photodecomposition of anionic organic target by amino group-modified TiO2 as anionic adsorptive photocatalyst. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.12.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Nishiyama N, Kozasa K, Okajima T, Fujitsuka M, Majima T, Yamazaki S. Factors affecting photocatalytic activity of visible light-responsive titanium dioxide doped with chromium ions. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01411f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanium dioxide doped with Cr ions (Cr–TiO2) was synthesized by a sol–gel method, with only water as the solvent, and dialysis.
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Affiliation(s)
- Naoto Nishiyama
- Division of Environmental Science and Engineering
- Graduate School of Science and Engineering
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Keisuke Kozasa
- Division of Earth Science, Biology, and Chemistry
- Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Toshihiro Okajima
- Kyushu Synchrotron Light Research Center (SAGA-LS)
- Saga 841-0005
- Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN)
- Osaka University
- Osaka 567-0047
- Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN)
- Osaka University
- Osaka 567-0047
- Japan
| | - Suzuko Yamazaki
- Division of Earth Science, Biology, and Chemistry
- Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
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28
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Seddigi ZS, Ahmed SA, Sardar S, Yarkandi NH, Abdulaziz M, Pal SK. Combating fuel-driven aqua-pollution using ”benzomagnets“. RSC Adv 2017. [DOI: 10.1039/c6ra26683e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
”Benzomagnets“ were developed using protoporphyrin IX-sensitized TiO2 microspheres to monitor and combat fuel-driven aqua-pollution.
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Affiliation(s)
- Zaki S. Seddigi
- Department of Environmental Health
- Faculty of Public Health and Health Informatics
- Umm Al-Qura University
- 21955 Makkah
- Saudi Arabia
| | - Saleh A. Ahmed
- Chemistry Department
- Faculty of Applied Sciences
- Umm Al-Qura University
- 21955 Makkah
- Saudi Arabia
| | - Samim Sardar
- Department of Chemical, Biological and Macromolecular Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700 106
- India
| | - Naeema H. Yarkandi
- Chemistry Department
- Faculty of Applied Sciences
- Umm Al-Qura University
- 21955 Makkah
- Saudi Arabia
| | - Mohammed Abdulaziz
- Department of Environmental Health
- Faculty of Public Health and Health Informatics
- Umm Al-Qura University
- 21955 Makkah
- Saudi Arabia
| | - Samir Kumar Pal
- Department of Chemical, Biological and Macromolecular Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700 106
- India
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29
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Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts. Catalysts 2016. [DOI: 10.3390/catal6080111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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30
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Cuomo F, Venditti F, Ceglie A, De Leonardis A, Macciola V, Lopez F. Cleaning of olive mill wastewaters by visible light activated carbon doped titanium dioxide. RSC Adv 2015. [DOI: 10.1039/c5ra16860k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Visible light activated carbon doped titanium dioxide fully works in the removal of total phenols from olive mill wastewater.
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Affiliation(s)
- Francesca Cuomo
- Department of Agricultural, Environmental and Food Sciences and Center for Colloid and Surface Science (CSGI)
- Università degli Studi del Molise
- I-86100 Campobasso
- Italy
| | - Francesco Venditti
- Consorzio per lo Sviluppo Industriale della Valle del Biferno (COSIB)
- Italy
| | - Andrea Ceglie
- Department of Agricultural, Environmental and Food Sciences and Center for Colloid and Surface Science (CSGI)
- Università degli Studi del Molise
- I-86100 Campobasso
- Italy
| | - Antonella De Leonardis
- Department of Agricultural, Environmental and Food Sciences and Center for Colloid and Surface Science (CSGI)
- Università degli Studi del Molise
- I-86100 Campobasso
- Italy
| | - Vincenzo Macciola
- Department of Agricultural, Environmental and Food Sciences and Center for Colloid and Surface Science (CSGI)
- Università degli Studi del Molise
- I-86100 Campobasso
- Italy
| | - Francesco Lopez
- Department of Agricultural, Environmental and Food Sciences and Center for Colloid and Surface Science (CSGI)
- Università degli Studi del Molise
- I-86100 Campobasso
- Italy
| |
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