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Ayyandurai N, Venkatesan S, Raman S. A Sensitive Enzymatic Electrochemical Biosensor for Cholesterol Based on Cobalt Ferrite@Molybdenum Disulfide/Gold Nanoparticles. ACS APPLIED BIO MATERIALS 2024; 7:4080-4092. [PMID: 38771954 DOI: 10.1021/acsabm.4c00412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Cholesterol is essential in biological systems, and the level of cholesterol in the body of a person acts as a diagnostic marker for a variety of diseases. So, in this work, we fabricated an enzymatic electrochemical biosensor for cholesterol using cobalt ferrite@molybdenum disulfide/gold nanoparticles (CoFe2O4@MoS2/Au). The synthesized composite was used for the determination of cholesterol by voltametric methods. The electroactive material CoFe2O4@MoS2/Au was successfully verified from the physiochemical studies such as XRD, Raman, FT-IR, and XPS spectroscopy along with morphological FESEM and HRTEM characterization. CoFe2O4@MoS2/Au showed outstanding dispersion in the aqueous phase, a large effective area, good biological compatibility, and superior electronic conductivity. The microflower-like CoFe2O4@MoS2/Au was confirmed by scanning electron microscopy. The image of transmission electron microscopy showed decoration of gold nanoparticles on CoFe2O4@MoS2 surfaces. Furthermore, a one-step dip-coating technique was used to build the biosensor used for cholesterol detection. In addition to acting as an enabling matrix to immobilize cholesterol oxidase (ChOx), CoFe2O4@MoS2/Au contributes to an increase in electrical conductivity. The differential pulse voltammetry method was used for the quantitative measurement of cholesterol. The calibration curve for cholesterol was linear in the concentration range of 5 to 100 μM, with a low limit of detection of 0.09 μM and sensitivity of 0.194 μA μM-1 cm-2. Furthermore, the biosensor demonstrates good practicability, as it was also employed for identifying cholesterol in real samples with acceptable selectivity and stability.
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Affiliation(s)
- Nagarajan Ayyandurai
- Department of Physical Chemistry, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India
| | - Sethuraman Venkatesan
- Research and Development, New Energy Technology Centre, Lithium-Ion Division, Amara Raja Battery Ltd., Karakambadi 517520, Tirupati, Andhra Pradesh, India
| | - Sasikumar Raman
- Department of Physical Chemistry, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India
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2
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Camcıoğlu Ş, Özyurt B, Oturan N, Portehault D, Trellu C, Oturan MA. Heterogeneous electro-Fenton treatment of chemotherapeutic drug busulfan using magnetic nanocomposites as catalyst. CHEMOSPHERE 2023; 341:140129. [PMID: 37690550 DOI: 10.1016/j.chemosphere.2023.140129] [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: 05/24/2023] [Revised: 08/31/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
The rapid and efficient mineralization of the chemotherapeutic drug busulfan (BSF) as the target pollutant has been investigated for the first time by three different heterogeneous EF systems that were constructed to ensure the continuous electro-generation of H2O2 and •OH consisting of: i) a multifunctional carbon felt (CF) based cathode composed of reduced graphene oxide (rGO), iron oxide nanoparticles and carbon black (CB) (rGO-Fe3O4/CB@CF), ii) rGO modified cathode (rGO/CB@CF) and rGO supported Fe3O4 (rGO-Fe3O4) catalyst and iii) rGO modified cathode (rGO/CB@CF) and multi walled carbon nanotube supported Fe3O4 (MWCNT-Fe3O4) catalyst. The effects of main variables, including the catalyst amount, applied current and initial pH were investigated. Based on the results, H2O2 was produced by oxygen reduction reaction (ORR) on the liquid-solid interface of both fabricated cathodes. •OH was generated by the reaction of H2O2 with the active site of ≡FeII on the surface of the multifunctional cathode and heterogeneous EF catalysts. Utilizing carbon materials with high conductivity, the redox cycling between ≡FeII and ≡FeIII was effectively facilitated and therefore promoted the performance of the process. The results demonstrated almost complete mineralization of BSF through the heterogeneous systems over a wide applicable pH range. According to the reusability and stability tests, multifunctional cathode exhibited outstanding performance after five consecutive cycles which is promising for the efficient mineralization of refractory organic pollutants. Moreover, intermediates products of BSF oxidation were identified and a plausible oxidation pathway was proposed. Therefore, this study demonstrates efficient and stable cathodes and catalysts for the efficient treatment of an anticancer active substance.
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Affiliation(s)
- Şule Camcıoğlu
- Ankara University, Faculty of Engineering, Department of Chemical Engineering, 06100, Tandogan, Ankara, Turkey; Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454, Marne-la-Vallée, Cedex 2, France.
| | - Baran Özyurt
- Ankara University, Faculty of Engineering, Department of Chemical Engineering, 06100, Tandogan, Ankara, Turkey; Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454, Marne-la-Vallée, Cedex 2, France
| | - Nihal Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454, Marne-la-Vallée, Cedex 2, France
| | - David Portehault
- Sorbonne Université, CNRS, Laboratoire de Chimie de La Matière Condensée de Paris (CMCP), 4 Place Jussieu, Paris, France
| | - Clément Trellu
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454, Marne-la-Vallée, Cedex 2, France
| | - Mehmet A Oturan
- Université Gustave Eiffel, Laboratoire Géomatériaux et Environnement EA 4508, 77454, Marne-la-Vallée, Cedex 2, France.
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3
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You X, Yang S, Li F, Fan Q, Liu Y, Liang W. Electrochemical degradation of azo dye using granular activated carbon electrodes loaded with bimetallic oxides. ENVIRONMENTAL TECHNOLOGY 2023; 44:2631-2647. [PMID: 35113005 DOI: 10.1080/09593330.2022.2038275] [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: 08/04/2021] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
The performance of granular activated carbon (GAC) loaded with different combinations of Fe, Co, Ni, Mn, and Ti was examined for the electrochemical degradation of an azo dye such as acid red B (AR-B). Among the bimetallic groups, the combination of Fe and Co exhibited the best degradation effect. X-ray diffraction and X-ray photoelectron spectroscopy revealed that the morphology of the catalyst is CoFe2O4, and scanning electron microscopy manifested that the catalyst is distributed on the GAC surface and holes. The initial pH, hydraulic retention time, and current intensively affected the decolourisation and degradation efficiencies of AR-B, while the electrolyte types and concentrations did not exert any considerable effect. Electron spin resonance spectroscopy indicated that strong signals of hydroxyl radicals are produced by the Fe-Co/GAC electrodes. Results from fluorescence spectroscopy and gas chromatography-mass spectrometry suggested that hydroxyl radicals preferentially attack azo bonds during the degradation of AR-B, forming a series of compounds, and these compounds are finally degraded into small molecules of organic acids, carbon dioxide, and water.
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Affiliation(s)
- Xinyu You
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
| | - Shuai Yang
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
| | - Feizhen Li
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
| | - Qianlong Fan
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
| | - Yu Liu
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
| | - Wenyan Liang
- College of Environmental Science & Engineering, Beijing Forestry University, Beijing, People's Republic of China
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4
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Casado J. Minerals as catalysts of heterogeneous Electro-Fenton and derived processes for wastewater treatment: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27776-7. [PMID: 37266777 DOI: 10.1007/s11356-023-27776-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023]
Abstract
Advanced oxidation processes (AOPs) such as Fenton's reagent, which generates highly reactive oxygen species, are efficient in removing biorefractory organic pollutants from wastewater. However, Fenton's reagent has drawbacks such as the generation of iron sludge, high consumption of H2O2, and the need for pH control. To address these issues, Electro-Fenton (EF) and heterogeneous Electro-Fenton (HEF) have been developed. HEF, which uses solid catalysts, has gained increasing attention, and this review focuses on the use of mineral catalysts in HEF and derived processes. The reviewed studies highlight the advantages of using mineral catalysts, such as efficiency, stability, affordability, and environmental friendliness. However, obstacles to overcome include the agglomeration of unsupported nanoparticles and the complex preparation techniques and poor stability of some catalyst-containing cathodes. The review also discusses the optimal pH range and dosage of the heterogeneous catalysts and compares the performance of iron sulfides versus iron oxides. Although natural minerals appear to be the best choice for effluents at pH>4, no scale-up reports have been found. The need for further development in this field and the importance of considering the environmental impact of trace toxic metals or catalytic nanoparticles in the treated water on the receiving ecosystem is emphasized. Finally, the article acknowledges the high energy consumption of HEF processes at the lab scale and calls for their performance development to achieve environmentally friendly and cost-effective results using real wastewaters on a pilot scale.
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Affiliation(s)
- Juan Casado
- Facultad de Ciencias y Biociencias, Universidad Autónoma de Barcelona, Campus UAB s/n, 08038, Bellaterra, Barcelona, Spain.
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Deng F, Jiang J, Sirés I. State-of-the-art review and bibliometric analysis on electro-Fenton process. CARBON LETTERS 2023; 33. [PMCID: PMC9594000 DOI: 10.1007/s42823-022-00420-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 06/04/2023]
Abstract
The electro-Fenton (EF) process was first proposed in 1996 and, since then, considerable development has been achieved for its application in wastewater treatment, especially at lab and pilot scale. After more than 25 years, the high efficiency, versatility and environmental compatibility of EF process has been demonstrated. In this review, bibliometrics has been adopted as a tool that allows quantifying the development of EF as well as introducing some useful correlations. As a result, information is summarized in a more visual manner that can be easily analyzed and interpreted as compared to conventional reviewing. During the recent decades under review, 83 countries have contributed to the dramatic growth of EF publications, with China, Spain and France leading the publication output. The top 12 most cited articles, along with the top 32 most productive authors in the EF field, have been screened. Four stages have been identified as main descriptors of the development of EF throughout these years, being each stage characterized by relevant breakthroughs. To conclude, a general cognitive model for the EF process is proposed, including atomic, microscopic and macroscopic views, and future perspectives are discussed.
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Affiliation(s)
- Fengxia Deng
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090 People’s Republic of China
- Laboratori d’Electroquímica dels Materials i del Medi Ambient, Departament de Ciència de Materials i Química Física, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jizhou Jiang
- School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205 People’s Republic of China
| | - Ignasi Sirés
- Laboratori d’Electroquímica dels Materials i del Medi Ambient, Departament de Ciència de Materials i Química Física, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
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6
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Arslan H, Bouchareb R, Arikan EB, Dizge N. Iron-loaded leonardite powder for Fenton oxidation of Reactive Red 180 dye removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77071-77080. [PMID: 35676574 DOI: 10.1007/s11356-022-21306-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Fenton oxidation is an effective and valuable method for wastewater treatment. To inhibit environmental impacts and increase overall reaction efficiencies, it is important to develop advanced catalysts. This paper illustrates an experimental study on the elimination of RR180 dye from synthetic aqueous solutions with raw leonardite and different iron-loaded leonardite powders, Fe(0)-loaded leonardite, and Fe(II)-loaded leonardite. The effect of solution pH (2.0-6.0), catalyst amount (0.10-1.5 g/L), H2O2 concentration (10-50 µL/L), and dye concentration (10-30 ppm) was tested to achieve maximum color removal efficiency using the three catalysts. At pH = 2, color removal efficiencies were higher and more suitable. Initial experiments showed the advantage of using Fe(II)-loaded leonardite on using Fe(0)-loaded leonardite. Fe(II)-loaded leonardite catalyst was the most efficient in RR180 color removal compared to the other tested reagents. Color removal in function of solution pH did not decrease much when Fe(II)-loaded leonardite was used (100 to 96%) when pH was increased from 2.0 to 6.0. In the other hand, dye removal has been significantly affected in the case of using raw leonardite, Fe(0)-loaded leonardite (93 to 0%), and (100 to 13%) in the same pH range, respectively. At optimum experimental conditions, catalyst amount: 0.75 g/L for Fe(II) and Fe(0)-loaded leonardite and 1.5 g/L for raw leonardite; dye concentration: 10 ppm; solution pH: 2.0; H2O2 concentration: 50 µL/L; volume: 100 mL and reaction time: 60 min, RR180 dye removal efficiencies were 91%, 100%, and 100% by raw leonardite, Fe(0)-loaded leonardite and Fe(II)-loaded leonardite, respectively. The stability and reusability of the tested catalyst was investigated up to ten cycles. The experimental results revealed that both Fe(0)-loaded leonardite and Fe(II)-loaded leonardite can be used in Fenton reaction up to four cycles without decreasing their efficiency in RR180 color removal. The characterization of the catalysts was established using scanning electron microscope with energy dispersive X-ray spectroscopy (SEM-EDX). The synthesized catalyst can be used at large scale in any textile industry to effectively remove dyes resulting in high elimination rates at the optimal determined and studied conditions.
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Affiliation(s)
- Hudaverdi Arslan
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey
| | - Raouf Bouchareb
- Department of Environmental Engineering, Process Engineering Faculty, Saleh Boubnider University, 25000, Constantine, Algeria
| | - Ezgi Bezirhan Arikan
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey
| | - Nadir Dizge
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey.
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senasu T, Lorwanishpaisarn N, Hemavibool K, Nijpanich S, Chanlek N, Nanan S. Construction of g-C3N4/BiOCl/CdS heterostructure photocatalyst for complete removal of oxytetracycline antibiotic in wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Facile Synthesis of n-Fe3O4/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process. Catalysts 2022. [DOI: 10.3390/catal12080879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In order to put forward an efficient and eco-friendly approach to degrade dye-containing industrial effluents, an n-Fe3O4/ACF nanocomposite was synthesized using the facile precipitation method and applied as a functional cathode for a heterogeneous electro-Fenton (E-Fenton) process. In particular, optimal initial pH value, current density, pole plate spacing, and electrode area were confirmed through systematical experiments as 5.73, 30 mA/cm2, 3 cm, and 2 × 2 cm2, respectively. Under such optimal reaction conditions, 98% of the methylene blue (MB) was degraded by n-Fe3O4/ACF after 2 h of E-Fenton treatment. In addition, n-Fe3O4/ACF could still decolor about 90% of the methylene blue (MB) for five rounds with some reductions in efficiency. Furthermore, results of electrochemical impedance spectroscopy and heterogeneous E-Fenton performance tests indicated that the loading of metal material Fe3O4 could enhance the overall electron transport capacity, which could accelerate the whole degradation processes. Moreover, the rich pores and large specific surface area of n-Fe3O4/ACF provided many active sites, which could greatly improve the efficiency of O2 reduction, promote the generation of H2O2, and shorten the reaction length between •OH and the pollutant groups.
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9
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Muzenda C, Arotiba OA. Improved Magnetite Nanoparticle Immobilization on a Carbon Felt Cathode in the Heterogeneous Electro-Fenton Degradation of Aspirin in Wastewater. ACS OMEGA 2022; 7:19261-19269. [PMID: 35721921 PMCID: PMC9202057 DOI: 10.1021/acsomega.2c00627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/18/2022] [Indexed: 05/23/2023]
Abstract
Toward the improvement of the application of heterogeneous electro-Fenton in water treatment, we report a new strategy of enhancing the immobilization of a magnetite nanoparticle catalyst on a carbon felt cathode. Exploiting the intrinsic ferrimagnetic properties of magnetite nanoparticles, magnet bars were used to attach the magnetite into the void spaces of the porous carbon felt (CF) cathode. The magnetite nanoparticles were prepared by coprecipitation with variations in the molar ratios of Fe2+/Fe3+. The magnetite was characterized, attached onto the CF electrode with magnetic bars, and used in the heterogeneous electro-Fenton (EF) degradation of aspirin. The effects of the following on the degradation were studied: Fe2+/Fe3+, pH, catalyst loading concentration, and voltage. The heterogeneous EF degradation of aspirin in wastewater improved by 23% when magnetic bars were used to enhance the immobilization of the magnetite catalysts. The 1:4 Fe2+/Fe3+ ratio resulted in the highest hetero-EF catalytic degradation of aspirin with complete degradation (100%) achieved after 140 min. For a mixture of pharmaceuticals, degradation percentages of 94.3% (aspirin), 88% (ciprofloxacin), and 80% (paracetamol) in 3 h were obtained. The magnetized magnetite on the cathode was reusable for 10 cycles. Thus, the use of magnets shows a promising strategy to avoid the leaching of ferrimagnetic nanoparticle catalysts embedded in the cathode for heterogeneous EF processes.
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Affiliation(s)
- Charles Muzenda
- Department
of Chemical Sciences, University of Johannesburg, Johannesburg 2028, South Africa
| | - Omotayo A. Arotiba
- Department
of Chemical Sciences, University of Johannesburg, Johannesburg 2028, South Africa
- Centre
for Nanomaterials Science Research, University
of Johannesburg, Johannesburg 2028, South Africa
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10
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Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods. MATERIALS 2022; 15:ma15031053. [PMID: 35160996 PMCID: PMC8838955 DOI: 10.3390/ma15031053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/20/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023]
Abstract
The remediation of water streams, polluted by various substances, is important for realizing a sustainable future. Magnetic adsorbents are promising materials for wastewater treatment. Although numerous techniques have been developed for the preparation of magnetic adsorbents, with effective adsorption performance, reviews that focus on the synthesis methods of magnetic adsorbents for wastewater treatment and their material structures have not been reported. In this review, advancements in the synthesis methods of magnetic adsorbents for the removal of substances from water streams has been comprehensively summarized and discussed. Generally, the synthesis methods are categorized into five groups, as follows: direct use of magnetic particles as adsorbents, attachment of pre-prepared adsorbents and pre-prepared magnetic particles, synthesis of magnetic particles on pre-prepared adsorbents, synthesis of adsorbents on preprepared magnetic particles, and co-synthesis of adsorbents and magnetic particles. The main improvements in the advanced methods involved making the conventional synthesis a less energy intensive, more efficient, and simpler process, while maintaining or increasing the adsorption performance. The key challenges, such as the enhancement of the adsorption performance of materials and the design of sophisticated material structures, are discussed as well.
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11
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Using chitosan-based heterogeneous catalyst for degradation of Acid Blue 25 in the effective electro-Fenton process with rotating cathodes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2021.115983] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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12
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Biton Seror S, Shamir D, Albo Y, Kornweitz H, Burg A. Elucidation of a mechanism for the heterogeneous electro-fenton process and its application in the green treatment of azo dyes. CHEMOSPHERE 2022; 286:131832. [PMID: 34399265 DOI: 10.1016/j.chemosphere.2021.131832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
Vast efforts are directed today toward the development of efficient, green methods for the degradation of toxic compounds, especially those that are water-soluble. Though Fenton reactions are commonly used in wastewater treatment, their mechanisms and the active species involved remain obscure due to their mechanistic complexity. In this work, the mechanism of an electro-Fenton reaction, in which a FeLaO3 catalyst was entrapped in a sol-gel matrix, was studied in the presence of azo dyes as the model for toxic compounds. Increased knowledge about this important mechanism will confer greater control over related processes and enable a more efficient and green degradation method. DFT calculations showed that in the presence of Fe(IV), OH are formed under acidic conditions and that both the iron and hydroxyl species function as oxidation reagents in the degradation process. The structure of the formed Fe(IV) embedded in the solid matrix was not the typical tetravalent structure. Entrapment in the sol-gel matrix stabilized the catalyst, enhanced its efficiency and enabled it to be recycled. Sol-gel matrices constitute a simple method for the degradation of stable and toxic compounds under extreme pH conditions. The findings of this study are highly significant for the treatment of typically acidic wastewaters.
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Affiliation(s)
- Shira Biton Seror
- Department of Chemical Engineering, Sami Shamoon College of Engineering, Beer-Sheva, 8410802, Israel
| | - Dror Shamir
- Analytical Chemistry Department, NRCN, Beer-Sheva, 84190, Israel
| | - Yael Albo
- Chemical Engineering Department, Ariel University, Ariel, 40700, Israel
| | - Haya Kornweitz
- Chemical Sciences Department, Ariel University, Ariel, 40700, Israel
| | - Ariela Burg
- Department of Chemical Engineering, Sami Shamoon College of Engineering, Beer-Sheva, 8410802, Israel.
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13
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Tabassum H, Ahmad IZ. Applications of metallic nanomaterials for the treatment of water. Lett Appl Microbiol 2021; 75:731-743. [PMID: 34687554 DOI: 10.1111/lam.13588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/06/2021] [Accepted: 10/17/2021] [Indexed: 12/01/2022]
Abstract
Water scarcity is not a novel issue. It has already affected almost every continent in this blue planet. It is driven by two primary sources: increasing demand for fresh water due to the increase in population and overexhaustion of the available freshwater resources. During the past decade, stress has been given to extract fresh, clean and safe potable elixir of life from the bountiful stores of sea water by exploiting various technologies. As nanomaterials are providing promising solutions to almost all our problems, they are again being accessed in order to combat the problem of global freshwater scarcity. Desalination methods have marvellously improved under the impact of nanomaterials. Different metallic nanomaterials are being used to serve this purpose; for example, silver, iron, zinc, titanium dioxide in addition to natural and synthetically derived polymeric bionanomaterials. In the present paper, a brief account of all the metallic nanomaterials which are being used for treatment of water has been provided by thorough investigation on the research done till now. It strives to throw light on various materials and methods which are based on the exploitation of nanotechnology for the treatment of water.
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Affiliation(s)
- H Tabassum
- Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Pune, India.,Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, India
| | - I Z Ahmad
- Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, India
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14
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A novel, sensitive and selective nanosensor based on graphene nanoribbon–cobalt ferrite nanocomposite and 1-methyl-3-butylimidazolium bromide for detection of vanillin in real food samples. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-01180-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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15
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Cruz DRS, de Jesus GK, Santos CA, Silva WR, Wisniewski A, Cunha GC, Romão LPC. Magnetic nanostructured material as heterogeneous catalyst for degradation of AB210 dye in tannery wastewater by electro-Fenton process. CHEMOSPHERE 2021; 280:130675. [PMID: 33971413 DOI: 10.1016/j.chemosphere.2021.130675] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Degradation of the Acid Black 210 dye (AB210) in synthetic and industrial effluent samples was performed, for the first time, using a heterogeneous electro-Fenton (EF) process with a CoFe2O4/NOM magnetic hybrid catalyst (Hb200). The technique was compared with electrochemical oxidation using electrogenerated hydrogen peroxide (AO-H2O2). The catalyst was synthesized by the sol-gel technique, using water with a high content of natural organic matter (NOM) as an eco-friendly solvent. Analyses using XRD, FTIR, and TEM showed the formation of hybrid nanostructures with average size of 4.85 nm. Electrochemical assays were performed with a GDE/BDD electrode pair, electrogenerated H2O2, and current density of 45.4 mA cm-2. For the synthetic solution of AB210 at pH 3, the EF process presented higher efficiency, compared to AO-H2O2, with the optimum condition achieved using a lower mass of the catalyst (30 mg) and a higher concentration of the dye (55 mg L-1). The EF method also showed superior performance in the treatment of an industrial effluent with high organic load, at pH 6, with almost complete mineralization of AB210 (95%) in 7 h, while the AO-H2O2 process achieved 82% mineralization. The Hb200 hybrid maintained excellent catalytic activity during reuse in 3 cycles, with only 10% lower mineralization efficiency in the last cycle. GC-MS analysis showed that most of the contaminants in the effluent, including bis(2-ethylhexyl) phthalate, one of the most toxic, were eliminated or transformed after the EF treatment with Hb200.
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Affiliation(s)
- Daiane R S Cruz
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil.
| | - Gleyce K de Jesus
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil
| | - Clecia A Santos
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil
| | - Wenes R Silva
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil
| | - Alberto Wisniewski
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil
| | - Graziele C Cunha
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil
| | - Luciane P C Romão
- Chemistry Department, Federal University of Sergipe (UFS), 49100-000, São Cristóvão, SE, Brazil; Institute of Chemistry, UNESP, National Institute of Alternative Technologies for Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactive Materials (INCT-DATREM), P.O. Box 355, 14800-900, Araraquara, SP, Brazil.
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16
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Wang L, Wu J. A review of recent progress in silver silicate-based photocatalysts for organic pollutant degradation. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108619] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Tomonaga H, Tanigaki Y, Hayashi K, Matsuyama T, Ida J. Adsorption properties of poly(NIPAM-co-AA) immobilized on silica-coated magnetite nanoparticles prepared with different acrylic acid content for various heavy metal ions. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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18
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Tajik S, Orooji Y, Ghazanfari Z, Karimi F, Beitollahi H, Varma RS, Jang HW, Shokouhimehr M. Nanomaterials modified electrodes for electrochemical detection of Sudan I in food. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-00955-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Nair KM, Kumaravel V, Pillai SC. Carbonaceous cathode materials for electro-Fenton technology: Mechanism, kinetics, recent advances, opportunities and challenges. CHEMOSPHERE 2021; 269:129325. [PMID: 33385665 DOI: 10.1016/j.chemosphere.2020.129325] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/10/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Electro-Fenton (EF) technique has gained significant attention in recent years owing to its high efficiency and environmental compatibility for the degradation of organic pollutants and contaminants of emerging concern (CECs). The efficiency of an EF reaction relies primarily on the formation of hydrogen peroxide (H2O2) via 2e─ oxygen reduction reaction (ORR) and the generation of hydroxyl radicals (●OH). This could be achieved through an efficient cathode material which operates over a wide pH range (pH 3-9). Herein, the current progresses on the advancements of carbonaceous cathode materials for EF reactions are comprehensively reviewed. The insights of various materials such as, activated carbon fibres (ACFs), carbon/graphite felt (CF/GF), carbon nanotubes (CNTs), graphene, carbon aerogels (CAs), ordered mesoporous carbon (OMCs), etc. are discussed inclusively. Transition metals and hetero atoms were used as dopants to enhance the efficiency of homogeneous and heterogeneous EF reactions. Iron-functionalized cathodes widened the working pH window (pH 1-9) and limited the energy consumption. The mechanism, reactor configuration, and kinetic models, are explained. Techno economic analysis of the EF reaction revealed that the anode and the raw materials contributed significantly to the overall cost. It is concluded that most reactions follow pseudo-first order kinetics and rotating cathodes provide the best H2O2 production efficiency in lab scale. The challenges, future prospects and commercialization of EF reaction for wastewater treatment are also discussed.
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Affiliation(s)
- Keerthi M Nair
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland
| | - Vignesh Kumaravel
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland
| | - Suresh C Pillai
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology, Sligo, F91 YW50, Ireland; Nanotechnology and Bio-Engineering Research Group, Department of Environmental Science, Institute of Technology, Sligo, F91 YW50, Ireland.
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20
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Garkani Nejad F, Tajik S, Beitollahi H, Sheikhshoaie I. Magnetic nanomaterials based electrochemical (bio)sensors for food analysis. Talanta 2021; 228:122075. [PMID: 33773704 DOI: 10.1016/j.talanta.2020.122075] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/11/2020] [Accepted: 12/28/2020] [Indexed: 01/23/2023]
Abstract
It is widely accepted that nanotechnology attracted more interest because of various values that nanomaterial applications offers in different fields. Recently, researchers have proposed nanomaterials based electrochemical sensors and biosensors as one of the potent alternatives or supplementary analytical tools to the conventional detection procedures that consumes a lot of time. Among different nanomaterials, researchers largely considered magnetic nanomaterials (MNMs) for developing and fabricating the electrochemical (bio)sensors for numerous utilizations. Among several factors, healthier and higher quality foods are the most important preferences of consumers and manufacturers. For this reason, developing new techniques for rapid, precise as well as sensitive determination of components or contaminants of foods is very important. Therefore, developing the new electrochemical (bio)sensors in food analysis is one of the key and effervescent research fields. In this review, firstly, we presented the properties and synthesis strategies of MNMs. Then, we summarized some of the recently developed MNMs-based electrochemical (bio)sensors for food analysis including detecting the antioxidants, synthetic food colorants, pesticides, heavy metal ions, antibiotics and other analytes (bisphenol A, nitrite and aflatoxins) from 2010 to 2020. Finally, the present review described advantages, challenges as well as future directions in this field.
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Affiliation(s)
- Fariba Garkani Nejad
- Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, 76175-133, Iran
| | - Somayeh Tajik
- Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran.
| | - Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
| | - Iran Sheikhshoaie
- Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, 76175-133, Iran
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21
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Senthilnathan J, Younis SA, Kwon EE, Surenjan A, Kim KH, Yoshimura M. An efficient system for electro-Fenton oxidation of pesticide by a reduced graphene oxide-aminopyrazine@3DNi foam gas diffusion electrode. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123323. [PMID: 32947720 DOI: 10.1016/j.jhazmat.2020.123323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/10/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
A stable rGO-AmPyraz@3DNiF gas diffusion electrode was prepared via modification of 3D nickel foam (3D-NiF) with aminopyrazine functionalized reduced graphene oxide (rGO-AmPyraz) for the electro Fenton (EF) process. The generation capacity of H2O2 and OH radicals by this electrode was assessed relative to 3DNiF and rGO-AmPyraz@indium tin oxide (ITO) electrodes and with/without a coated Fe3O4 plate. The rGO-AmPyraz@3DNiF electrode showed the maximum production of these radicals at 2.2 mmol h-1 and 410 μmol h-1, respectively (pH 3) with the least leaching of Ni2+ such as < 0.5 mg L-1 even after 5 cycles (e.g., relative to 3DNiF (24 mg L-1). Such control on Ni ion leaching was effective all across the tested pH from 3 to 8.5. Its H2O2 generation capacity was far higher than that of the nanocarbon supported on commercially available ITO conductive glass. The mineralization of dichlorvos (at initial concentration: 50 mg L-1) was confirmed with its complete degradation as the concentrations of the end products (e.g., free Cl-1 (5.36 mg L-1) and phosphate (12.89 mg L-1)) were in good agreement with their stoichiometric concentration in dichlorvos. As such, the proposed system can be recommended as an effective electrode to replace nanocarbon-based product commonly employed for EF processes.
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Affiliation(s)
- Jaganathan Senthilnathan
- Environmental and Water Resources Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Sherif A Younis
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea; Analysis and Evaluation Department, Egyptian Petroleum Research Institute, Nasr City 11727, Cairo, Egypt
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05005, Republic of Korea
| | - Anupama Surenjan
- Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Masahiro Yoshimura
- Department of Material Science and Engineering, National Cheng Kung University, Taiwan
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22
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Hachemaoui M, Mokhtar A, Mekki A, Zaoui F, Abdelkrim S, Hacini S, Boukoussa B. Composites beads based on Fe3O4@MCM-41 and calcium alginate for enhanced catalytic reduction of organic dyes. Int J Biol Macromol 2020; 164:468-479. [DOI: 10.1016/j.ijbiomac.2020.07.128] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/01/2020] [Accepted: 07/12/2020] [Indexed: 12/14/2022]
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23
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Zaidi SZJ, Luan Y, Harito C, Utari L, Yuliarto B, Walsh FC. Synthesis and application of gas diffusion cathodes in an advanced type of undivided electrochemical cell. Sci Rep 2020; 10:17267. [PMID: 33057183 PMCID: PMC7560722 DOI: 10.1038/s41598-020-74199-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 07/08/2020] [Indexed: 11/17/2022] Open
Abstract
This paper reports the oxidation of Remazol black B dye by employing iron ions catalyst based gas diffusion cathodes, (GDCs). A GDC was synthesized by using a layer of carbon black and iron ions catalyst for oxygen reduction to hydrogen peroxide. The results demonstrated around 97% decolorization of Remazol black-B dye for 50 min by iron ions catalyst based GDC. The degradation study was performed under electrogenerated hydrogen peroxide at a constant voltage of - 0.6 V vs Hg/HgSO4 in which the rate of degradation was correlated with hydrogen peroxide production. Overall, the GDC's found to be effective method to degrade the dyes via electro-Fenton.
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Affiliation(s)
- S Z J Zaidi
- Electrochemical Engineering Laboratory, Energy Technology Research Group, Faculty of Engineering and Environment, Engineering Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
- Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan.
| | - Y Luan
- Electrochemical Engineering Laboratory, Energy Technology Research Group, Faculty of Engineering and Environment, Engineering Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
| | - C Harito
- Industrial Engineering Department, Faculty of Engineering, Bina Nusantara University, Jakarta, 11480, Indonesia
| | - L Utari
- Advanced Functional Materials (AFM) Laboratory, Engineering Physics, Institut Teknologi Bandung, 40132, Bandung, Indonesia
- Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, 40132, Bandung, Indonesia
| | - B Yuliarto
- Advanced Functional Materials (AFM) Laboratory, Engineering Physics, Institut Teknologi Bandung, 40132, Bandung, Indonesia
- Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, 40132, Bandung, Indonesia
| | - F C Walsh
- Electrochemical Engineering Laboratory, Energy Technology Research Group, Faculty of Engineering and Environment, Engineering Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
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24
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Xiang H, Ren G, Yang X, Xu D, Zhang Z, Wang X. A low-cost solvent-free method to synthesize α-Fe 2O 3 nanoparticles with applications to degrade methyl orange in photo-fenton system. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 200:110744. [PMID: 32460050 DOI: 10.1016/j.ecoenv.2020.110744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/26/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
Hematite nanoparticles (α-Fe2O3 NPs) were successfully synthesized by a low-cost solvent-free reaction using Ferrous sulfate waste (FeSO4·7H2O) and pyrite (FeS2) as raw materials and employed for the decolorization of Methyl Orange by the photo-Fenton system. The properties of α-Fe2O3 NPs before and after photo-Fenton reaction were characterized by X-ray powder diffraction (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform infrared (FT-IR) spectrum and X-ray photoelectron spectroscopy (XPS), and the optical properties of α-Fe2O3 NPs were analyzed by UV-vis diffuse reflectance spectra (UV-vis DRS) and Photoluminescence (PL) spectra. The analytic results showed that the as-formed samples having an average diameter of ~50 nm exhibit pure phase hematite with sphere structure. Besides, little differences were found by comparing the characterization data of the particles before and after the photo-Fenton reaction, indicating that the photo-Fenton reaction was carried out in solution rather than on the surface of α-Fe2O3 NPs. A 24 central composite design (CCD) coupled with response surface methodology (RSM) was applied to evaluate and optimize the important variables. A significant quadratic model (P-value<0.0001, R2 = 0.9664) was derived using an analysis of variance (ANOVA), which was adequate to perform the process variables optimization. The optimal process conditions were performed to be 395 nm of the light wavelength, pH 3.0, 5 mmol/L H2O2 and 1 g/L α-Fe2O3, and the decolorization efficiency of methyl orange was 99.55% at 4 min.
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Affiliation(s)
- Hengli Xiang
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, Chengdu, 610065, PR China
| | - Genkuan Ren
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; College of Chemistry and Chemical Engineering, Yibin University, Yibin, 644000, PR China
| | - Xiushan Yang
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, Chengdu, 610065, PR China.
| | - Dehua Xu
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, Chengdu, 610065, PR China
| | - Zhiye Zhang
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, Chengdu, 610065, PR China
| | - Xinlong Wang
- School of Chemical Engineering of Sichuan University, Chengdu, 610065, PR China; Engineering Research Center of Comprehensive Utilization and Clean Processing of Phosphorus Resources, Ministry of Education, Chengdu, 610065, PR China
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25
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Nguyen DDD, Huynh KA, Nguyen XH, Nguyen TP. Imidacloprid degradation by electro-Fenton process using composite Fe3O4–Mn3O4 nanoparticle catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04246-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Hojjati M, Soleimani E. Highly dispersible
Fe
3
O
4
‐Ag
@
OPO
(
OH
)
2
nanocomposites as a novel eco‐friendly magnetic retrievable catalyst for the reduction of
p
‐nitrophenol. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mahsa Hojjati
- Inorganic Chemistry Research Laboratory, Faculty of Chemistry Shahrood University of Technology Shahrood Iran
| | - Esmaiel Soleimani
- Inorganic Chemistry Research Laboratory, Faculty of Chemistry Shahrood University of Technology Shahrood Iran
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27
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Guo W, Umar A, Du Y, Wang L, Pei M. Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1112. [PMID: 32512890 PMCID: PMC7353252 DOI: 10.3390/nano10061112] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/30/2020] [Accepted: 06/02/2020] [Indexed: 12/07/2022]
Abstract
Poly(2-(dimethylamino)ethyl methacrylate)-grafted bentonite, marked as Bent-PDMAEMA, was designed and prepared by a surface-initiated atom transfer radical polymerization method for the first time in this study. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) were applied to characterize the structure of Bent-PDMAEMA, which resulted in the successful synthesis of Bent-PDMAEMA. As a cationic adsorbent, the designed Bent-PDMAEMA was used to remove dye Orange I from wastewater. The adsorption property of Bent-PDMAEMA for Orange I dye was investigated under different experimental conditions, such as solution pH, initial dye concentration, contact time and temperature. Under the optimum conditions, the adsorption amount of Bent-PDMAEMA for Orange I dye could reach 700 mg·g-1, indicating the potential application of Bent-PDMAEMA for anionic dyes in the treatment of wastewater. Moreover, the experimental data fitted well with the Langmuir model. The adsorption process obeyed pseudo-second-order kinetic process mechanism.
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Affiliation(s)
- Wenjuan Guo
- Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, China
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, Promising Centre for Sensors and Electronic Devices, Najran University, Najran 11001, Saudi Arabia
| | - Yankai Du
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; (Y.D.); (L.W.)
| | - Luyan Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; (Y.D.); (L.W.)
| | - Meishan Pei
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; (Y.D.); (L.W.)
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28
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Nguyen DDD, Nguyen CNT, Huynh KA, Nguyen TP. Optimization of electro-Fenton process for the removal of non-biodegradable organic compounds in instant coffee production wastewater using composite Fe3O4–Mn3O4 nanoparticle catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03973-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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29
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Katowah DF, Hussein MA, Alam MM, Gabal MA, Sobahi TR, Asiri AM, Uddin J, Rahman MM. Selective Fabrication of an Electrochemical Sensor for Pb
2+
Based on Poly(pyrrole‐co‐
o–
toluidine)/CoFe
2
O
4
Nanocomposites. ChemistrySelect 2019. [DOI: 10.1002/slct.201902714] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Dina F. Katowah
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Mahmoud A. Hussein
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Polymer chemistry Lab.Chemistry DepartmentFaculty of ScienceAssiut University Assiut 71516 Egypt
| | - M. M. Alam
- Department of Chemical Engineering and Polymer ScienceShahjalal University of Science and Technology Sylhet 3100 Bangladesh
| | - M. A. Gabal
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry DepartmentFaculty of ScienceBenha University, Benha Egypt
| | - T. R. Sobahi
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Jamal Uddin
- Center for NanotechnologyDepartment of Natural SciencesCoppin State University 2500 W. N. Ave Baltimore, MD USA
| | - Mohammed M. Rahman
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR)King Abdulaziz University Jeddah 21589 Saudi Arabia
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30
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Tong X, Jia W, Li Y, Yao T, Wu J, Yang M. One-step preparation of reduced graphene oxide/Prussian blue/polypyrrole aerogel and their enhanced photo-Fenton performance. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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31
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You Y, Huang S, Zhao X, Li H, Cheng F, Wu J, Zhang Y, Zhou S. Hybrid microbial electrolytic/UV system for highly efficient organic pollutants removal. J Environ Sci (China) 2019; 83:39-45. [PMID: 31221386 DOI: 10.1016/j.jes.2019.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
This study for the first time proposed an efficient microbial electrolyte/UV system for Methyl Orange decomposition. With an external applied voltage of 0.2 V and cathode aeration of 20 mL/min, H2O2 could be in-situ generated from two-electron reduction of oxygen in cathode, reaching to 8.1 mg/L in 2 hr and continued to increase. The pollutant removal efficiency of approximate 94.7% was achieved at initial neutral pH, with the activation of •OH in the presence of UV illumination. Although the nature of its guiding principles remain on the vista of practical exploration, this proof-of-concept study provides an alternative operation pattern of solar-microbial hybrid technology for future wastewater treatment from a basic but multidisciplinary view.
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Affiliation(s)
- Yingying You
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
| | - Xuesong Zhao
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Han Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Fangqin Cheng
- Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030006, China
| | - Jinhua Wu
- Guangzhou Taihe Water Ecology Technology Co. Ltd., Guangzhou 510220, China
| | - Yongqing Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Shaofeng Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China; Department of Environmental Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark.
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32
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Ranjbar M, Majidian N, Samipourgiri M. Heterogeneous Electro-Fenton Process by MWCNT-Ce/WO3 Nanocomposite Modified GF Cathode for Catalytic Degradation of BTEX: Process Optimization Using Response Surface Methodology. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-019-00550-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Nazari P, Askari N, Rahman Setayesh S. Oxidation-precipitation of magnetic Fe3O4/AC nanocomposite as a heterogeneous catalyst for electro-Fenton treatment. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1613233] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Pegah Nazari
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Neda Askari
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
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34
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Ergüt M, Uzunoğlu D, Özer A. Efficient decolourization of malachite green with biosynthesized iron oxide nanoparticles loaded carbonated hydroxyapatite as a reusable heterogeneous Fenton-like catalyst. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 54:786-800. [PMID: 30938571 DOI: 10.1080/10934529.2019.1596698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 03/11/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
In this study, iron oxide nanoparticles (IO-NPs) with a mean diameter of 102.85 nm were firstly synthesized via a facile green route using Ulva spp. aqueous extract as a bioreductant agent. Then, IO-NPs were loaded into carbonated hydroxyapatite (c-Hap) and the final product was named as the iron oxide nanoparticles loaded carbonated hydroxyapatite (IO-NPs-Lc-Hap). Subsequently, IO-NPs-Lc-Hap was characterized by FT-IR, SEM, XRD and EDX analysis methods. MG colour removal efficiencies of Ulva spp., Hap, IO-NPs and IO-NPs-Lc-Hap materials were also evaluated by adsorption and/or Fenton-like reaction methods. IO-NPs-Lc-Hap with the highest decolourization capacity was chosen as a heterogeneous Fenton-like catalyst for Malachite Green (MG). For Fenton-like decolourization of MG, the optimum H2O2 concentration, initial dye concentration and catalyst concentration were determined to be 30 mM, 100 mg/L and 1.0 g/L, respectively. At these optimum conditions, 100% decolourization efficiency and 33.3% COD removal were obtained. On the other hand, 94% decolourization efficiency and 42% COD removal were achieved for the real textile wastewater at the obtained optimum conditions. The experimental decolourization reaction rate for MG was determined as -rd = 0.0779 [(mg dye0.3) (g cat-0.3) (min-1)] × qt0.7. Also, the catalyst had high decolourization efficiencies at the end of six sequence usages.
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Affiliation(s)
- Memduha Ergüt
- a Department of Chemical Engineering, Faculty of Engineering , Mersin University , Mersin , Turkey
| | - Deniz Uzunoğlu
- a Department of Chemical Engineering, Faculty of Engineering , Mersin University , Mersin , Turkey
| | - Ayla Özer
- a Department of Chemical Engineering, Faculty of Engineering , Mersin University , Mersin , Turkey
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El‐Said WA, Abdel‐Rahman MA, Sayed EM, Abdel‐Wahab AA. Electrochemical Monitoring of Methotrexate Anticancer Drug in Human Blood Serum by Using
in situ
Solvothermal Synthesized Fe
3
O
4
/ITO Electrode. ELECTROANAL 2019. [DOI: 10.1002/elan.201800798] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Waleed A. El‐Said
- Department of Chemistry, Faculty of ScienceAssiut University Assiut 71516 Egypt
| | | | - Eman M. Sayed
- Department of Chemistry, Faculty of ScienceAssiut University Assiut 71516 Egypt
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Biocompatible thermo- and magneto-responsive shape-memory polyurethane bionanocomposites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 97:658-668. [PMID: 30678953 DOI: 10.1016/j.msec.2018.12.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 12/22/2018] [Accepted: 12/23/2018] [Indexed: 11/23/2022]
Abstract
Thermo- and magneto-responsive shape-memory bionanocomposites based on a bio-based polyurethane and magnetite nanoparticles were prepared. Due to the structure of the reactants, the behavior of the polyurethane matrix differs from common polyurethanes, since the soft segment was formed by a diisocyanate and a chain extender, whereas the macrodiol served as hard segment. The influence of the magnetite nanoparticles on the thermal and mechanical properties and the shape-memory behavior was studied. It was observed that magnetite nanoparticles interacted with macrodiol-rich domains and decreased the overall crystallinity of the material, although their presence did not affect the mechanical properties to a great extent. At the same time, the magnetite nanoparticles increased the shape fixity and contributed to shape recovery. The bionanocomposites exhibited magnetic behavior and could be easily heated in an alternating magnetic field, allowing fast and almost complete shape recovery. Preliminary cytotoxicity, hemocompatibility, and cell adhesion analysis suggest that the new materials are benign and potentially useful for biomedical applications.
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Han X, Zhang H, Chen T, Zhang M, Guo M. Facile synthesis of metal-doped magnesium ferrite from saprolite laterite as an effective heterogeneous Fenton-like catalyst. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Liu D, Zhang H, Wei Y, Liu B, Lin Y, Li G, Zhang F. Enhanced degradation of ibuprofen by heterogeneous electro-Fenton at circumneutral pH. CHEMOSPHERE 2018; 209:998-1006. [PMID: 30114751 DOI: 10.1016/j.chemosphere.2018.06.164] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
Fenton based reactions are effective for pharmaceutical removals, but traditional Fenton processes have drawbacks of pH adjustment and large amount of produced iron sludge. To overcome these challenges, a heterogeneous electro-Fenton process was proposed for effective contaminant degradation at circumneutral pH without iron sludge production. The anti-inflammatory drug ibuprofen (a common pharmaceutical in natural waters) was used as a representative contaminant. Activated carbon fibers (ACFs) supported ferric citrate (Cit-Fe/ACFs) was synthesized and used as the cathode, and RuO2/Ti was used as the anode. H2O2 was electro-generated in situ from O2 reduction and the production rate of OH per unit area was 6.8 μM W-1 cm-2 using Cit-Fe/ACFs cathode. A maximal ibuprofen degradation of 97% was obtained after 120 min at the current density of 7 mA cm-2. The electrical energy per order (EEO) varied from 0.24±0.03 to 2.65±0.04 kWh log-1 m-3 when the current density ranged from 1 to 7 mA cm-2. The Cit-Fe/ACFs cathode showed relatively good reusability and ∼85% IBP removal was achieved after 6 cycles of degradation. Our results showed that the prepared Cit-Fe/ACFs cathode was promising for the treatment of pharmaceutical contaminants.
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Affiliation(s)
- Dun Liu
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Hao Zhang
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Yuquan Wei
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Bo Liu
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Yipeng Lin
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Guanghe Li
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Fang Zhang
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China.
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Facile one-pot synthesis of novel structured IONP@C-HIOP composite as superior electrocatalyst for hydrogen evolution reaction and aqueous waste investigation of bio-imaging applications. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.078] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Poza-Nogueiras V, Rosales E, Pazos M, Sanromán MÁ. Current advances and trends in electro-Fenton process using heterogeneous catalysts - A review. CHEMOSPHERE 2018. [PMID: 29529567 DOI: 10.1016/j.chemosphere.2018.03.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Over the last decades, advanced oxidation processes have often been used alone, or combined with other techniques, for remediation of ground and surface water pollutants. The application of heterogeneous catalysis to electrochemical advanced oxidation processes is especially useful due to its efficiency and environmental safety. Among those processes, electro-Fenton stands out as the one in which heterogeneous catalysis has been broadly applied. Thus, this review has introduced an up-to-date collation of the current knowledge of the heterogeneous electro-Fenton process, highlighting recent advances in the use of different catalysts such as iron minerals (pyrite, magnetite or goethite), prepared catalysts by the load of metals in inorganic and organic materials, nanoparticles, and the inclusion of catalysts on the cathode. The effects of physical-chemical parameters as well as the mechanisms involved are critically assessed. Finally, although the utilization of this process to remediation of wastewater overwhelmingly outnumber other utilities, several applications have been described in the context of regeneration of adsorbent or the remediation of soils as clear examples of the feasibility of the electro-Fenton process to solve different environmental problems.
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Affiliation(s)
- Verónica Poza-Nogueiras
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - Emilio Rosales
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - M Ángeles Sanromán
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain.
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Zhou W, Ding Y, Gao J, Kou K, Wang Y, Meng X, Wu S, Qin Y. Green electrochemical modification of RVC foam electrode and improved H 2O 2 electrogeneration by applying pulsed current for pollutant removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:6015-6025. [PMID: 29238928 DOI: 10.1007/s11356-017-0810-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
The performance of cathode on H2O2 electrogeneration is a critical factor that limits the practical application of electro-Fenton (EF) process. Herein, we report a simple but effective electrochemical modification of reticulated vitreous carbon foam (RVC foam) electrode for enhanced H2O2 electrogeneration. Cyclic voltammetry, chronoamperometry, and X-ray photoelectron spectrum were used to characterize the modified electrode. Oxygen-containing groups (72.5-184.0 μmol/g) were introduced to RVC foam surface, thus resulting in a 59.8-258.2% higher H2O2 yield. The modified electrodes showed much higher electrocatalytic activity toward O2 reduction and good stability. Moreover, aimed at weakening the extent of electroreduction of H2O2 in porous RVC foam, the strategy of pulsed current was proposed. H2O2 concentration was 582.3 and 114.0% higher than the unmodified and modified electrodes, respectively. To test the feasibility of modification, as well as pulsed current, EF process was operated for removal of Reactive Blue 19 (RB19). The fluorescence intensity of hydroxybenzoic acid in EF with modified electrode is 3.2 times higher than EF with unmodified electrode, illustrating more hydroxyl radicals were generated. The removal efficiency of RB 19 in EF with unmodified electrode, modified electrode, and unmodified electrode assisted by pulsed current was 53.9, 68.9, and 81.1%, respectively, demonstrating that the green modification approach, as well as pulsed current, is applicable in EF system for pollutant removal. Graphical abstract ᅟ.
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Affiliation(s)
- Wei Zhou
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Yani Ding
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Jihui Gao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China.
| | - Kaikai Kou
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Yan Wang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Xiaoxiao Meng
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Shaohua Wu
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Yukun Qin
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, People's Republic of China
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Senasu T, Hemavibool K, Nanan S. Hydrothermally grown CdS nanoparticles for photodegradation of anionic azo dyes under UV-visible light irradiation. RSC Adv 2018; 8:22592-22605. [PMID: 35539755 PMCID: PMC9081469 DOI: 10.1039/c8ra02061b] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/14/2018] [Indexed: 12/20/2022] Open
Abstract
A CdS photocatalyst was synthesized successfully at low temperature via a catalyst-free hydrothermal technique which is simple, green and also easily controlled. The synthesized CdS photocatalyst showed hexagonal wurtzite structure with high crystallinity and excellent optical properties. The catalyst was used for degradation of two anionic azo dyes namely reactive red (RR141) and Congo red (CR) azo dyes. The catalyst showed very high efficiency of 99.8% and 99.0% toward photodegradation of RR141 and CR dye, respectively. The photodegradation reaction followed pseudo-first order kinetics. Chemical scavenger studies showed that direct photogenerated hole transfer from CdS to the azo dye was most likely the major pathway for photodegradation of the azo dye. The chemical structure of the CdS photocatalyst remained stable after photodegradation. The CdS photocatalyst retains its original efficiency even after the fifth cycle of reuse indicating the advantages of stability and reusability. The CdS nanostructures will be suitable for removal of highly toxic and hazardous organic materials in environmental protection. A CdS photocatalyst was synthesized successfully at low temperature via a catalyst-free hydrothermal technique which is simple, green and also easily controlled.![]()
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Affiliation(s)
- Teeradech Senasu
- Materials Chemistry Research Center
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Khon Kaen University
- Khon Kaen 40002
| | - Khuanjit Hemavibool
- Department of Chemistry
- Faculty of Science
- Naresuan University
- Phitsanulok 65000
- Thailand
| | - Suwat Nanan
- Materials Chemistry Research Center
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Khon Kaen University
- Khon Kaen 40002
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Ensafi AA, Rezaloo F, Rezaei B. CoFe2O4/reduced graphene oxide/ionic liquid modified glassy carbon electrode, a selective and sensitive electrochemical sensor for determination of methotrexate. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.05.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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