1
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Zhang W, Jiang Y, Wen Q, Zhao Y, Wu B, Huang W. Inhibit or promote? Trade-off effect of dissolved organic matter on the laccase-mediator system. JOURNAL OF HAZARDOUS MATERIALS 2024; 473:134595. [PMID: 38761769 DOI: 10.1016/j.jhazmat.2024.134595] [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: 01/03/2024] [Revised: 05/04/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
A biocatalytic system comprising fungal laccase and mediators can generate phenol radicals and efficiently eliminate various triarylmethane dyes. This study systematically explores the kinetic impact of dissolved organic matter (DOM), represented by humic substance (HS consisting of 90% fulvic acid, from lignite), on the decolorization of seven typical triarylmethane dyes by Trametes versicolor laccase and twenty natural mediators. Among these, 4-hydroxybenzyl alcohol (4-HA) and methyl violet (MV) undergo in-depth investigation regarding degradation products, pathways, and reaction mechanisms. In instances where HS hampers laccase-alone decolorization, such as malachite green, Coomassie brilliant blue, bromophenol blue, and acid magenta, this inhibition may persist despite mediator introduction. Conversely, in cases where HS facilitates decolorization, such as crystalline violet and ethyl violet, most laccase-mediator systems (LMSs) can still benefit. For MV decolorization by laccase and 4-HA, HS's kinetic effect is controlled by concentration and reaction time. A 5 mg/L HS increased the decolorization rate from 50% to 67% within the first hour, whereas 10 mg/L HS only achieved 45%. After 16 h of reaction, HS's impact on decolorization rate diminishes. Furthermore, the addition of HS enhances precipitation production, probably due to its involvement in polymerization with MV and mediator. Computational simulations and spectral monitoring reveal that low HS concentrations accelerate laccase-mediated demethylation by disrupting the chromophores bound to MV, thus promoting the decolorization of MV. Conversely, inhibition by high HS concentrations stems from the competitive binding of the enzyme pocket to the mediator, and the reduction of phenol free radicals in the system. Molecular docking and kinetic simulations revealed that laccase forms complexes with both the mediator and MV. Interestingly, the decolorization of MV occurred through a non-radical mechanism in the presence of HS. This work provided a reference for screening of high catalytic performance mediators to remove triarylmethane dyes in the actual water environment.
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Affiliation(s)
- Wentao Zhang
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Yunlin Jiang
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment of PRC, Guangzhou 510655, People's Republic of China
| | - Qingqi Wen
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Yue Zhao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215002, People's Republic of China
| | - Bingdang Wu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215002, People's Republic of China; Key Laboratory of Suzhou Sponge City Technology, Suzhou 215009, People's Republic of China.
| | - Wenguang Huang
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment of PRC, Guangzhou 510655, People's Republic of China.
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2
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Boumad S, Cano-Casanova L, Román-Martínez MC, Bouchenafa-Saib N, Lillo-Ródenas MA. Removal of malachite green from water: Comparison of adsorption in a residue-derived AC versus photocatalytic oxidation with TiO 2 and study of the adsorption-photocatalysis synergy. ENVIRONMENTAL RESEARCH 2024; 250:118510. [PMID: 38387495 DOI: 10.1016/j.envres.2024.118510] [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: 12/06/2023] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
The literature rarely compiles studies devoted to the removal of pollutants in aqueous media comparing adsorption and photocatalytic degradation, and does not pay enough attention to the analysis of combined adsorption-photocatalytic oxidation processes. In the present manuscript, the removal of malachite green (MG) from aqueous solutions has been investigated in three different sustainable scenarios: i) adsorption on activated carbon (AC) derived from a residue, luffa cylindrica, ii) photocatalytic oxidation under simulated solar light using titanium dioxide (TP) and iii) combined adsorption-photocatalytic oxidation using TP-AC (70/30 wt./wt.) under simulated solar light. The study has revealed that in the three scenarios and studied conditions, the total removal of this endocrine-disrupting dye from the solution takes place in the assayed time, 2 h, in some cases just in a few minutes. MG adsorption in the AC is a very fast and efficient removal method. MG photocatalytic oxidation with TP also occurs efficiently, although the oxidized MG is not totally mineralized. MG removal using the TP-AC composite under simulated solar light occurs only slightly faster to the MG adsorption in the AC, being adsorption the dominating MG removal mechanism for TP-AC. Thus, more than 90% of the removed MG with TP-AC under simulated solar light is adsorbed in this carbon-containing composite. The obtained results highlight the interest in adsorption, being the selection of the most suitable removal method dependent on several factors (i.e., the cost of the AC regeneration, for adsorption, or the toxicity of the intermediate oxidation species, for photooxidation). Paying attention to MG photooxidation with TiO2, comparison of two working photodegradation schemes shows that the direct photodegradation of MG from solution, avoiding any initial dark equilibrium period, is more efficient from a time perspective. The use of scavengers has proved that MG photodegradation occurs via an oxidation mechanism dominated by superoxide anion radicals.
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Affiliation(s)
- S Boumad
- MCMA Group, Department of Inorganic Chemistry and Materials Institute (IUMA), University of Alicante, Ap. 99, E-03080 Alicante, Spain; Université Blida 1, Laboratoire de Chimie Physique des Interfaces des Matériaux Appliquées à l'Environnement, Faculté de Technologie, B.P. 270 Route de Soumaa, 09000 Blida, Algeria
| | - L Cano-Casanova
- MCMA Group, Department of Inorganic Chemistry and Materials Institute (IUMA), University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - M C Román-Martínez
- MCMA Group, Department of Inorganic Chemistry and Materials Institute (IUMA), University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - N Bouchenafa-Saib
- Université Blida 1, Laboratoire de Chimie Physique des Interfaces des Matériaux Appliquées à l'Environnement, Faculté de Technologie, B.P. 270 Route de Soumaa, 09000 Blida, Algeria
| | - M A Lillo-Ródenas
- MCMA Group, Department of Inorganic Chemistry and Materials Institute (IUMA), University of Alicante, Ap. 99, E-03080 Alicante, Spain.
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3
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López-Álvarez MÁ, Ortega-Gudiño P, Silva-Jara JM, Silva-Galindo JG, Barrera-Rodríguez A, Casillas-García JE, Ceja-Andrade I, Guerrero-de León JA, López-de Alba CA. DyMnO 3: Synthesis, Characterization and Evaluation of Its Photocatalytic Activity in the Visible Spectrum. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7666. [PMID: 38138808 PMCID: PMC10745093 DOI: 10.3390/ma16247666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
DyMnO3 is a p-type semiconductor oxide with two crystal systems, orthorhombic and hexagonal. This material highlights its ferroelectric and ferromagnetic properties, which have been the subject of numerous studies. Nevertheless, its photocatalytic activity has been less explored. In this work, the photocatalytic activity of DyMnO3 is evaluated through the photodegradation of MG dye. For the synthesis of this oxide, a novel and effective method was used: polymer-decomposition. The synthesized powders contain an orthorhombic phase, with a range of absorbances from 300 to 500 nm and a band gap energy of 2.4 eV. It is also highlighted that, when using this synthesis method, some of the main diffraction lines related to the orthorhombic phase appear at 100 °C. Regarding its photocatalytic activity, it was evaluated under visible light (λ = 405 nm), reaching a photodegradation of approximately 88% in a period of 30 min. Photocurrent tests reveal a charge carrier separation (e-,h+) at a 405 nm wavelength. The main reactive oxygen species (ROS) involved in the photodegradation process were radicals, OH•, and photo-holes (h+). These results stand out because it is the first time that the photodegradation capability of this oxide in the visible spectrum has been evaluated.
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Affiliation(s)
- Miguel Ángel López-Álvarez
- Departamento de Ingeniería Mecánica, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico; (J.A.G.-d.L.); (C.A.L.-d.A.)
| | - Pedro Ortega-Gudiño
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico
| | - Jorge Manuel Silva-Jara
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico; (J.M.S.-J.); (J.G.S.-G.)
| | - Jazmín Guadalupe Silva-Galindo
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico; (J.M.S.-J.); (J.G.S.-G.)
| | - Arturo Barrera-Rodríguez
- Centro de Investigación en Nanocatálisis Ambiental y Energías Limpias CUCIENEGA, Universidad de Guadalajara, Av. Universidad 1115, Ocotlán 47820, Jalisco, Mexico;
| | - José Eduardo Casillas-García
- Departamento de Ciencias Tecnológicas, Centro Universitario de la Ciénega (CUCIENEGA), Universidad de Guadalajara, Av. Universidad 1115, Ocotlán 47820, Jalisco, Mexico;
| | - Israel Ceja-Andrade
- Departamento de Física, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico;
| | - Jesús Alonso Guerrero-de León
- Departamento de Ingeniería Mecánica, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico; (J.A.G.-d.L.); (C.A.L.-d.A.)
| | - Carlos Alberto López-de Alba
- Departamento de Ingeniería Mecánica, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara 44430, Jalisco, Mexico; (J.A.G.-d.L.); (C.A.L.-d.A.)
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4
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Cui KP, Yang TT, Chen YH, Weerasooriya R, Li GH, Zhou K, Chen X. Magnetic recyclable heterogeneous catalyst Fe 3O 4/g-C 3N 4 for tetracycline hydrochloride degradation via photo-Fenton process under visible light. ENVIRONMENTAL TECHNOLOGY 2022; 43:3341-3354. [PMID: 33886443 DOI: 10.1080/09593330.2021.1921052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/16/2021] [Indexed: 05/22/2023]
Abstract
Antibiotic pollution of water resources is a global problem, and the development of new treatments for destroying antibiotics in water is a priority research. We successfully manufactured recyclable magnetic Fe3O4/g-C3N4 through the electrostatic self-assembly method. Selecting tetracycline (TC) as the target pollutant, using Fe3O4/g-C3N4 and H2O2 developed a heterogeneous optical Fenton system to remove TC under visible light. Fe3O4/g-C3N4 was systematically characterized by SEM, TEM, XRD, FTIR, XPS, DRS, and electrochemical methods. The removal efficiency of 7% Fe3O4/g-C3N4 at pH = 3, H2O2 = 5 mM, and catalyst dosage of 1.0 g/L can reach 99.8%. After magnetic separation, the Fe3O4/g-C3N4 photocatalyst can be recycled five times with minimal efficiency loss. The excellent degradation performance of the prepared catalyst may be attributed to the proper coupling interface between Fe3O4 and g-C3N4 which promotes the separation and transfer of photogenerated electrons. Photogenerated electrons can also accelerate the conversion of Fe3+ to Fe2+, thereby producing more ˙OH. The new Fe3O4/g-C3N4 can be used as a raw material for advanced oxidation of water contaminated by refractory antibiotics.
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Affiliation(s)
- Kang-Ping Cui
- Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Ting-Ting Yang
- Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Yi-Han Chen
- Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Rohan Weerasooriya
- Key Lab of Aerospace Structural Parts Forming Technology and Equipment of Anhui Province, Institute of Industry and Equipment Technology, Hefei University of Technology, Hefei, People's Republic of China
- National Centre for Water Quality Research, National Institute of Fundamental Studies, Kandy, Sri Lanka
| | - Guang-Hong Li
- Anhui Shunyu Water Co., Ltd., Hefei, People's Republic of China
| | - Kai Zhou
- Anhui Shunyu Water Co., Ltd., Hefei, People's Republic of China
| | - Xing Chen
- Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, People's Republic of China
- Key Lab of Aerospace Structural Parts Forming Technology and Equipment of Anhui Province, Institute of Industry and Equipment Technology, Hefei University of Technology, Hefei, People's Republic of China
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5
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Removal of malachite green by electrochemical oxidation polymerization and electrochemical reduction precipitation: its kinetics and intermediates. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05242-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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6
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Wei L, Gu A, Guo Z, Ding J, Jin G, Lei Y. An Integrated Study on the Fading Mechanism of Malachite Green Industrial Dye for the Marquisette Curtain in the Studio of Cleansing Fragrance, the Palace Museum (Beijing). MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27144411. [PMID: 35889285 PMCID: PMC9322362 DOI: 10.3390/molecules27144411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022]
Abstract
Historical marquisette curtains were composed of lightweight fabrics, woven in an open-mesh and leno-type weave, usually made of silk, and found in Qing imperial buildings. As panel curtains, they were exposed to light, and so underwent fading. This study investigated the manufacturing technology and fading mechanism of dyed marquisette fabric from the Studio of Cleansing Fragrance, the Palace Museum (Beijing). The technological aspects were identified. The types of weave, fiber, and adhesive used to fix the curtain to the wooden frame were identified through microscopic observation and infrared spectroscopy. A color change characterization was performed based on UV-visible diffuse reflectance spectra. The textile colorant was identified as malachite green (MG), and its degradation by light was subsequently studied by dynamic photolysis experiments in a kinetic solution for the rapid exploration of by-products. The main degradation pathways were thus identified and the factors responsible for the induced color changes were discussed. A comparison of the liquid chromatography-mass spectrometry (LC–MS) results of the products derived from the photolysis method as well as of the samples extracted from the object allowed for the identification of the presence of different degradation pathways in the faded and unfaded parts of the textile. A metabolomics analysis was applied to account for the differences in the degradation pathways.
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Affiliation(s)
- Le Wei
- Conservation Department, The Palace Museum, Beijing 100009, China;
- Correspondence: (L.W.); (G.J.); (Y.L.)
| | - An Gu
- Conservation Department, The Palace Museum, Beijing 100009, China;
| | - Zhimou Guo
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
- Ganjiang Chinese Medicine Innovation Center, Nanchang 330000, China;
| | - Junjie Ding
- Ganjiang Chinese Medicine Innovation Center, Nanchang 330000, China;
| | - Gaowa Jin
- CAS Key Laboratory of Separation Sciences for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
- Ganjiang Chinese Medicine Innovation Center, Nanchang 330000, China;
- Correspondence: (L.W.); (G.J.); (Y.L.)
| | - Yong Lei
- Conservation Department, The Palace Museum, Beijing 100009, China;
- Correspondence: (L.W.); (G.J.); (Y.L.)
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7
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Mishra S, Kumar P, Samanta SK. Atomic sheets of silver ferrite with universal microwave catalytic behavior. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 818:151735. [PMID: 34808155 DOI: 10.1016/j.scitotenv.2021.151735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/03/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
Prompt degradation of organic pollutants renders microwave (MW) catalysis technology extremely lucrative; ideal microwave catalysts are therefore being hunted with an unprecedented urgency. Ideal functional microwave catalyst should be highly crystalline, room temperature ferromagnetic (for magnetic retrieval), highly dielectric (for sufficient microwave absorption) apart from being structurally stable at high temperature. The potential of silver ferrite 2D sheets (2D AFO) synthesized using a novel microwave technique as a microwave catalyst for the degradation of a variety of organic dyes and antibiotics was investigated in this article. While organic dyes like malachite green (MG), brilliant green (BG) and nile blue A (NB) achieved 99.2%, 98.8% and 95.2%, respectively; antibiotic tetracycline hydrochloride (TCH) molecule resulted in 75.8% degradation efficiency. Total organic carbon (TOC) measurements yielded 76%, 59.1%, 49.1% and 47.6% of carbon content for MG, BG, NB and TCH, respectively. The reaction pathway via intermediates and subsequent degradation to CO2 and H2O is revealed by liquid chromatography-mass spectrometry (LCMS). Both superoxide and hydroxyl radicals are participating in the process, according to scavenger tests. The evolution of silver ferrite as a new 2D material and its demonstration as an ideal microwave catalyst will lead to a new beginning in catalysis science and technology.
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Affiliation(s)
- Sandhya Mishra
- Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Prashant Kumar
- Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India; Birck Nanotechnology Centre, Purdue University, West Lafayette, IN 47907, USA.
| | - Sujoy Kumar Samanta
- Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India.
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8
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Mishra S, Kumari S, Kumar P, Samanta SK. Microwave synthesized strontium hexaferrite 2D sheets as versatile and efficient microwave catalysts for degradation of organic dyes and antibiotics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:147853. [PMID: 34087737 DOI: 10.1016/j.scitotenv.2021.147853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/26/2021] [Accepted: 05/15/2021] [Indexed: 06/12/2023]
Abstract
Microwave catalysis is extremely lucrative due to prompt mineralization and superior efficiency. Ideal microwave catalysts should possess crystalline nature, large surface area, room temperature ferromagnetic, high dielectric properties apart from structural stability at elevated temperature. In the present article, the candidature of microwave synthesized strontium hexaferrite 2D sheets (2D SFO) has been explored as microwave catalysts for the degradation of a host of organic dyes and antibiotics. Malachite green (MG) and nile blue A (NB) in particular exhibited 99.8% and 97.6% degradation, respectively. Degradation reaction is established to follow pseudo-second-order kinetics. Total organic carbon (TOC) measurements hint at 52% and 60% mineralization for MG and NB, respectively. Liquid chromatography-mass spectroscopy (LCMS) measurements indicate the reaction pathways via intermediates and eventual mineralization to CO2 and H2O. Mott-Schottky measurements along with scavenger tests hint that both hydroxyl and superoxide radicals participate in the reaction. Having superior efficiency apart from the versatile nature of the 2D SFO microwave catalyst, the present research will guide to the emergence of microwave catalysis as a new technology.
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Affiliation(s)
- Sandhya Mishra
- Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Sushma Kumari
- Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Prashant Kumar
- Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India; Birck Nanotechnology Centre, Purdue University, West Lafayette, IN 47907, USA.
| | - Sujoy Kumar Samanta
- Department of Chemical and Biochemical Engineering, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India.
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9
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Fe 3+-citric acid/sodium alginate hydrogel: A photo-responsive platform for rapid water purification. Carbohydr Polym 2021; 269:118269. [PMID: 34294301 DOI: 10.1016/j.carbpol.2021.118269] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/20/2022]
Abstract
As water pollution in human society becomes more and more serious, the demand for materials that can be used for wastewater treatment is increasing. Here, we reported a sodium alginate-based hydrogel (Fe3+-CA/SA hydrogel) that can efficiently photocatalyze the degradation of malachite green. The Fe3+-CA/SA hydrogel is composed of sodium alginate, citric acid, and Fe3+. The hydrogel has multi-leveled pore structure and photochromic ability. Benefiting from the unique microstructure and positive feedback chemical reaction process, the hydrogel has high photocatalytic efficiency. Under 365 nm UV light irradiation, the hydrogel can degrade around 95% of malachite green (20 mg/L) in about 4 min, and there is no need to add H2O2 in the degradation process. The work helps to expand the application of sodium alginate-based hydrogels in the field of water treatment. It also has exploratory significance for the principle of photocatalytic degradation of malachite green.
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10
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Liu J, Wang G, Li B, Ma X, Hu Y, Cheng H. A high-efficiency mediator-free Z-scheme Bi 2MoO 6/AgI heterojunction with enhanced photocatalytic performance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147227. [PMID: 33905930 DOI: 10.1016/j.scitotenv.2021.147227] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/14/2021] [Accepted: 04/14/2021] [Indexed: 06/12/2023]
Abstract
A high-efficiency Z-scheme Bi2MoO6/AgI heterojunction was designed and fabricated via in situ growth of AgI on Bi2MoO6. Its photocatalytic activity was investigated with the degradation of malachite green (MG). After 40 min of visible light irradiation, near complete degradation of MG (20 mg/L) occurred when BA11 (Bi2MoO6:AgI = 1:1, 2.0 g/L) was present, while only 29.0% and 49.7% of the MG could be degraded in the presence of Bi2MoO6 and AgI, respectively. The excellent photocatalytic activity of BA11 results from strong visible light absorption and the low recombination efficiency of photogenerated electron-hole pairs induced by the formation of heterojunction. Density function theory (DFT) calculations revealed that the formation of built-in electric field at the interface between Bi2MoO6 and AgI facilitates the effective separation and transfer of photogenerated charge carriers. Results of reuse experiments indicated that the heterostructured photocatalyst has excellent stability. Radical scavenging experiments and electron spin resonance spectra showed that superoxide radicals (O2-) and hydroxyl radicals (OH) were the major reactive oxygen species in the photocatalytic system. The photocatalytic degradation pathway of MG was proposed based on the organic degradation intermediates detected. These findings demonstrate that the mediator-free Z-scheme Bi2MoO6/AgI heterojunction could serve as a promising photocatalyst in photocatalytic treatment of organic pollutants.
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Affiliation(s)
- Jue Liu
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Guowei Wang
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Bing Li
- MOE Laboratory of Groundwater Circulation and Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
| | - Xue Ma
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Yuanan Hu
- MOE Laboratory of Groundwater Circulation and Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
| | - Hefa Cheng
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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11
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Ren Q, Kong C, Chen Z, Zhou J, Li W, Li D, Cui Z, Xue Y, Lu Y. Ultrasonic assisted electrochemical degradation of malachite green in wastewater. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106059] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Li X, Wang W, Dong F, Zhang Z, Han L, Luo X, Huang J, Feng Z, Chen Z, Jia G, Zhang T. Recent Advances in Noncontact External-Field-Assisted Photocatalysis: From Fundamentals to Applications. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05354] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xibao Li
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Weiwei Wang
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Fan Dong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Zhiqiang Zhang
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
| | - Lu Han
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
| | - Xudong Luo
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
| | - Juntong Huang
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhijun Feng
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhi Chen
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Guohua Jia
- Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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13
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Singh R, Singh RK. Detection of Malachite Green in Water Using Edge Excited Label Free Fluorescent Probe NCQDs. J Fluoresc 2020; 30:1281-1285. [PMID: 32809113 DOI: 10.1007/s10895-020-02603-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 08/04/2020] [Indexed: 11/24/2022]
Abstract
The fluorescent properties of nitrogen doped carbon quantum dots (NCQDs) prepared through microwave assisted green method has been used as label free fluorescent probe for selective and sensitive detection of malachite green (MG) in water. The optical responses revealed that the NCQDs are highly stable and have good fluorescent quantum yield. The NCQDs were used to detect the Malchite Green in Mili Q water. Reduction in the fluorescence response was monitored in the range 17.12-128.43 μM of MG dissolved in Mili Q water. Linear response was observed in the range, 10-80 μM. The calculated value of limit of detection is 5.16 μM and the sensitivity is (0.03536 ± 0.00001) μM-1. The future application of this work is that it can be employed to detect MG in the tap water and other natural sources of water.
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Affiliation(s)
- Ranjana Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Ranjan K Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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14
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Garg N, Bera S, Rastogi L, Ballal A, Balaramakrishna MV. Synthesis and characterization of L-asparagine stabilised gold nanoparticles: Catalyst for degradation of organic dyes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 232:118126. [PMID: 32062492 DOI: 10.1016/j.saa.2020.118126] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/31/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
L-asparagine functionalized gold nanoparticles (Asp-AuNPs), have been synthesized by reducing HAuCl4 in presence of L-asparagine at 70 °C for 8 h. Asp-AuNPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS); the nanoparticles formed were spherical in shape with average size of 13.5 ± 3.7 nm. Synthesized Asp-AuNPs were found to exhibit excellent catalytic properties for the degradation of different organic dyes viz. Rhodamine B (RB), methyl orange (MO), acid red 27 (amaranth) and xylenol orange (XO) in the presence of sodium borohydride (NaBH4). Asp-AuNPs acts as electron relay system and serve as effective catalyst for complete degradation of all the tested dyes. Rate kinetic investigations suggested that catalysed degradation reactions follow pseudo-first order reaction kinetics with rate constant of 0.904 min-1, 0.314 min-1, 0.228 min-1 and 0.1 min-1 for RB, MO, amaranth and XO respectively.
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Affiliation(s)
- Nidhi Garg
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500062, India.
| | - Santanu Bera
- Water and Steam Chemistry Division, Bhabha Atomic Research Centre Facilities, Kalpakkam 603102, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Lori Rastogi
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500062, India
| | - Anand Ballal
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India; Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - M V Balaramakrishna
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500062, India
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15
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Som I, Roy M, Saha R. Advances in Nanomaterial‐based Water Treatment Approaches for Photocatalytic Degradation of Water Pollutants. ChemCatChem 2020. [DOI: 10.1002/cctc.201902081] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ipsita Som
- Department of ChemistryNational Institute of Technology Durgapur 713209 India
| | - Mouni Roy
- Department of ChemistryNational Institute of Technology Durgapur 713209 India
- Department of ChemistryBanasthali University Banasthali Rajasthan 304022 India
| | - Rajnarayan Saha
- Department of ChemistryNational Institute of Technology Durgapur 713209 India
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16
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Wang Q, Yu S, Qin W, Wu X. Isopropanol-assisted synthesis of highly stable MAPbBr 3/p-g-C 3N 4 intergrowth composite photocatalysts and their interfacial charge carrier dynamics. NANOSCALE ADVANCES 2020; 2:274-285. [PMID: 36133970 PMCID: PMC9417772 DOI: 10.1039/c9na00634f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 11/20/2019] [Indexed: 05/25/2023]
Abstract
Two phase photocatalysts can be intergrown with each other, resulting in superior photocatalytic properties. Herein, methylamine lead bromide (MAPbBr3) wrapped/entrapped protonated graphitic carbon nitride (p-g-C3N4) intergrowth microcrystals were fabricated by mixing a pervoskite precursor with p-g-C3N4 colloidal sol. A highly stable isopropanol (IPA) solvent based photocatalytic system for dye degradation was demonstrated. The composite with an optimal p-g-C3N4 mass percentage of 3.3 wt% (denoted as MAPbBr3/p-g-C3N4-1.0 mg) exhibited the highest photocatalytic degradation of malachite green (99.8%) within 10 min under visible light, which was 5.3-fold and 16-fold greater than that exhibited by its constituents separately. The strong chemical interaction and fundamental photophysical processes in MAPbBr3/p-g-C3N4 were systematically evaluated by spectroscopic and electrochemical techniques, confirming the effective separation of photogenerated electron-hole pairs and faster interfacial charge transfer behavior. Furthermore, active superoxide radicals (O2˙-) played a vital role in the catalytic reaction, because of the significant photoinduced electron transfer rate (k et) in the inverted type-I core/shell MAPbBr3/p-g-C3N4 band configuration structure. In addition, MAPbBr3/p-g-C3N4 has good cycling stability for 10 cycles and versatility for other cationic (RhB) and anionic (MO) dye pollutants, indicating the great potential for solar energy conversion into chemical energy.
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Affiliation(s)
- Qun Wang
- MIIT, Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering China
- School of Materials Science and Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Sicao Yu
- MIIT, Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering China
| | - Wei Qin
- School of Materials Science and Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Xiaohong Wu
- MIIT, Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering China
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17
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Fe-Based Metallic Glasses and Dyes in Fenton-Like Processes: Understanding Their Intrinsic Correlation. Catalysts 2020. [DOI: 10.3390/catal10010048] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Fe-based metallic glasses have been demonstrated as effective heterogeneous catalysts in Fenton-like processes for dye degradation. Yet, currently corresponding studies have limitations due to the limited study object (dyes) and the correlation between metallic glasses and dye pollutants in Fenton-like processes is still not comprehensively studied. Accordingly, this work intensively investigated the thermal catalytic behavior correlations between two Fe-based metallic glasses (Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3) and eight different dyes. Results indicated a lower activation energy in the more active metallic glass and a dependence of the activation energy of Fe-based metallic glasses in dye solutions. In addition, a high H2O2 concentration led to a declined catalytic efficiency but a photo-enhanced Fenton-like process overcame this limitation at high concentration of H2O2 due to the decrease of pH and enhancement of irradiation. Furthermore, the average mineralization rates of Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3 have been measured to be 42.7% and 12.6%, respectively, and the correlation between decolorization and mineralization revealed that a faster decolorization in a Fenton-like process contributed to a higher mineralization rate. This work provides an intrinsic viewpoint of the correlation between Fe-based metallic glasses and dyes in Fenton-like processes and holds the promise to further promote the industrial value of metallic glasses.
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18
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Tuning the photocatalytic activity of carbohydrate-derived humins via ball milling: Insights by experimental and chemometrics approach. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Enhanced degradation of malachite by iron nanoparticles encapsulated in sodium alginate beads. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.04.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Mishra S, Sahu TK, Verma P, Kumar P, Samanta SK. Microwave-Assisted Catalytic Degradation of Brilliant Green by Spinel Zinc Ferrite Sheets. ACS OMEGA 2019; 4:10411-10418. [PMID: 31460135 PMCID: PMC6648797 DOI: 10.1021/acsomega.9b00914] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/04/2019] [Indexed: 06/10/2023]
Abstract
Microwave (MW)-assisted catalytic degradation, being an emerging technique, can potentially fill in the technological gap which promises on-demand, prompt, and efficient catalysis, and therefore, suitable MW catalysts are curiously being hunted. Candidature of spinel zinc ferrite (SZFO) atomic sheets as a MW catalyst has thoroughly been investigated in this article. Analytical techniques prove SZFO atomic sheets to be highly crystalline, thermally stable, good dielectric, and superparamagnetic, which render it a potentially strong MW catalyst. Brilliant green (BG) has been demonstrated to be chemisorbed on the SZFO atomic sheets, which upon MW irradiation gets mineralized within 5 min, and the overall efficiency has been observed to be >99%. Total organic carbon removal of ∼80% has been obtained. Ionic chromatography proves the formation of SO4 2- and NO3 - anions which increase with MW exposure time. Liquid chromatography mass spectroscopy studies have established intermediate formations during catalysis. SZFO, established as a uniquely suited and highly efficient MW catalyst for BG, is expected to broaden the horizons of MW-assisted catalytic degradation and lead it toward its broader applications.
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Affiliation(s)
- Sandhya Mishra
- Department
of Chemical and Biochemical Engineering and Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Tumesh Kumar Sahu
- Department
of Chemical and Biochemical Engineering and Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Priyanshu Verma
- Department
of Chemical and Biochemical Engineering and Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
| | - Prashant Kumar
- Department
of Chemical and Biochemical Engineering and Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
- Birck
Nanotechnology Centre, Purdue University, West Lafayette 47906, United States
| | - Sujoy Kumar Samanta
- Department
of Chemical and Biochemical Engineering and Department of Physics, Indian Institute of Technology Patna, Bihta, Patna, Bihar 801106, India
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21
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Huang W, Yang H, Zhang S. Acetylacetone extends the working life of laccase in enzymatic transformation of malachite green by interfering with a key intermediate. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:520-528. [PMID: 30572291 DOI: 10.1016/j.jhazmat.2018.12.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 12/08/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
The potential of acetylacetone (AA) as a mediator of laccase has been tested in the enzymatic transformation of malachite green (MG). AA inhibited the laccase-induced transformation of MG at the beginning of incubation but extended the working life of laccase in long runs. To elucidate the underlying mechanisms, the transformation of MG in the laccase-AA system was systematically investigated. The inhibition of AA on the enzymatic transformation of MG conformed to the partial mixed model. The transformation of N,N,N',N'-tetramethyl-1,1'-biphenyl-4,4'-diamine (NTB) was identified as the rate-controlling step in the laccase system. The generated NTB was oxidized to NTB+ by laccase, which acted as a redox mediator to accelerate the transformation of MG. The addition of AA to the enzymatic system quenched the NTB+ by forming an intermediate complex of AA-NTB. This quenching reaction led to two contrary effects: the acceleration caused by NTB+ in the enzymatic transformation of MG was inhibited whereas the formation of AA-NTB complex enhanced the further transformation at the later stage. As a result, less laccase was consumed, which explained the extended working life of laccase in the long runs. The understanding of these mechanisms are helpful for the better use of laccase as a green biocatalyst.
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Affiliation(s)
- Wenguang Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hua Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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22
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Cao DJ, Wang JJ, Zhang Q, Wen YZ, Dong B, Liu RJ, Yang X, Geng G. Biodegradation of triphenylmethane dye crystal violet by Cedecea davisae. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:9-13. [PMID: 30419454 DOI: 10.1016/j.saa.2018.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 10/29/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
The present study focuses on the biodegradation of triphenylmethane dye crystal violet (CV) by Cedecea davisae. The degradation of CV was evaluated via ultraviolet absorbance at 254 nm (UV254) and chemical oxygen demand (COD) removal, and the kinetics was used to evaluate the degradation efficiency. Intermediate products were analyzed via UV-vis spectroscopy (UV), Fourier transform infrared spectroscopy (FTIR), and high-performance liquid chromatography (HPLC). Results showed that C. davisae was able to decolorize the CV, and the maximum decolorization ratio reached 97%. COD reduction was observed after decolorization, with average removal rates of >90% after 48 h. Moreover, 50% of UV254 can be removed after 14 h. The removal efficiency of CV by C. davisae followed first- and second-order reaction kinetics at temperature ranged from 20 °C to 40 °C and pH 4.0 to 6.0, respectively. By using UV, the peak representing the CV disappeared 14 h after CV decolorization, and the degradation of aromatic and naphthalene rings was attributed to the formation of a new metabolite. The FTIR spectra of metabolites showed that a new functional group of OH, CH, CH2, CH3, NH, CN, CN, or CO was produced. The chromatograms of HPLC recorded at 589 nm at retention time decreased and were not detected following incubation for 8 h by C. davisae.
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Affiliation(s)
- De-Ju Cao
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China.
| | - Jun-Jie Wang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Qian Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Yi-Zheng Wen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Bei Dong
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Ren-Jing Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Xun Yang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
| | - Geng Geng
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei 230036, People's Republic of China
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23
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Algal biochar reinforced trimetallic nanocomposite as adsorptional/photocatalyst for remediation of malachite green from aqueous medium. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.070] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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24
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Ansari A, Nematollahi D. A comprehensive study on the electrocatalytic degradation, electrochemical behavior and degradation mechanism of malachite green using electrodeposited nanostructured β-PbO 2 electrodes. WATER RESEARCH 2018; 144:462-473. [PMID: 30075442 DOI: 10.1016/j.watres.2018.07.056] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/16/2018] [Accepted: 07/22/2018] [Indexed: 06/08/2023]
Abstract
This work has investigated the electrocatalytic degradation of malachite green (MG) in aqueous solution with G/β-PbO2, SS316/β-PbO2, Ti/β-PbO2 and Pb/β-PbO2 electrodes. These electrodes show high oxygen evolution over-potential and excellent electrochemical degradation efficiency for organic pollutants. The optimum conditions for the degradation of MG were obtained by studying the effects of different parameters, such as initial current densities and initial MG concentration. The remaining organic compounds concentrations (color) and chemical oxygen demand (COD) removal efficiency were investigated and compared. The results indicate that the efficiency of G/β-PbO2 electrode for both color and COD removals is more than those of other electrodes. At the optimum conditions, the color and COD removal efficiencies of MG reached up to 100% and 94%, respectively. The observed degradation rate of MG was found to vary in the order G/β-PbO2> SS316/β-PbO2> Ti/β-PbO2> Pb/β-PbO2. Moreover, in this paper, the electrochemical behavior and adsorption characteristic of MG in aqueous solutions with different pH values were studied in details at glassy carbon electrode using both constant-current coulometry and cyclic voltammetry techniques. This study has led to the proposed mechanism for the oxidation pathway of MG and determine the absorption properties of MG in acidic, neutral and basic solutions. We also proposed the mineralization pathway of MG at β-PbO2 electrode.
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Affiliation(s)
- Amin Ansari
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65178-38683, Iran
| | - Davood Nematollahi
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65178-38683, Iran.
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25
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de Santiago Colín DM, Martínez-Chávez L, Cuán Á, Elizalde-Peña EA, Rivera JA, Guzmán C, Escobar-Alarcón L, Esquivel K. Sonochemical coupled synthesis of Cr-TiO2 supported on Fe3O4 structures and chemical simulation of the degradation mechanism of Malachite Green dye. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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26
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Regmi C, Dhakal D, Kim TH, Yamaguchi T, Lee SW. Fabrication of Ag-decorated BiOBr-mBiVO 4 dual heterojunction composite with enhanced visible light photocatalytic performance for degradation of malachite green. NANOTECHNOLOGY 2018; 29:154001. [PMID: 29388923 DOI: 10.1088/1361-6528/aaac60] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A visible light active Ag-decorated BiVO4-BiOBr dual heterojunction photocatalyst was prepared using a facile hydrothermal method, followed by the photodeposition of Ag. The photocatalytic activity of the synthesized samples was investigated by monitoring the change in malachite green (MG) concentration upon visible light irradiation. The synthesized sample was highly effective for the degradation of non-biodegradable MG. The enhanced activity observed was ascribed to the efficient separation and transfer of charge carriers across the dual heterojunction structure as verified by photoluminescence measurements. The removal of MG was primarily initiated by hydroxyl radicals and holes based on scavenger's effect. To gain insight into the degradation mechanism, both high performance liquid chromatography and high resolution-quantitative time of flight, electrospray ionization mass spectrometry measurements during the degradation process were carried out. The degradation primarily followed the hydroxylation and N-demethylation process. A possible reaction pathway is proposed on the basis of all the information obtained under various experimental conditions.
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Affiliation(s)
- Chhabilal Regmi
- Department of Environmental and Biochemical Engineering, Sun Moon University, Chungnam 31460, Republic of Korea
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27
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Zhang X, Wang M, Lin L, Xiao G, Tang Z, Zhu X. Synthesis of novel laccase-biotitania biocatalysts for malachite green decolorization. J Biosci Bioeng 2018; 126:69-77. [PMID: 29567373 DOI: 10.1016/j.jbiosc.2018.01.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 01/19/2018] [Accepted: 01/30/2018] [Indexed: 12/12/2022]
Abstract
Biomimetic mineralization has emerged as a novel tool for generating excellent supports for enzyme stabilization. In this work, protamine was used to induce titanium (IV) bis(ammonium lactato) dihydroxide (Ti-BALDH) into titania nanoparticles. This biomimetic titanification process was adopted for laccase immobilization. Laccase-biotitania biocatalyst was prepared and the effect of different parameters (buffer solution, titania precursor concentration, protamine concentration, and enzyme loading) on the encapsulation efficiency and recovery of laccase were evaluated. Compared with free laccase, the thermal and pH stability of immobilized laccase were improved significantly. In addition, laccase loaded on titania was effective at enhancing its storage stability. After seven consecutive cycles, the immobilized laccase still retained 51% of its original activity. Finally, laccase-biotitania biocatalysts showed good performance on decolorization of malachite green (MG), which can be attributed to an adsorption and degradation effect. The intermediates of the MG degradation were identified by gas chromatography-mass spectrometry (GC-MS) analysis, and the most probable degradation pathway was proposed. This study provides deeper understanding of the laccase-biotitania particles as a fast biocatalyst for MG decolorization.
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Affiliation(s)
- Xinying Zhang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China; Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China
| | - Meiyin Wang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Linlin Lin
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Gao Xiao
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Zhenping Tang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Xuefeng Zhu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd., Shanghai 200241, PR China; Section Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and GeoSciences, Delft University of Technology, 2628CN Delft, The Netherlands.
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28
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Mudrinić TM, Ajduković MJ, Jović-Jovičić NP, Marinović SR, Mojović ZD, Milutinović-Nikolić AD, Banković PT. Al,Fe,Ni-pillared bentonite in the catalytic wet peroxide oxidation of the textile dye Acid Yellow 99. REACTION KINETICS MECHANISMS AND CATALYSIS 2018. [DOI: 10.1007/s11144-018-1386-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Ray SK, Dhakal D, Lee SW. Insight Into Malachite Green Degradation, Mechanism and Pathways by Morphology-Tuned α
-NiMoO4
Photocatalyst. Photochem Photobiol 2018; 94:552-563. [DOI: 10.1111/php.12872] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/20/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Schindra Kumar Ray
- Department of Environmental and Bio-Chemical Engineering; Sun Moon University; Chungnam Korea
| | - Dipesh Dhakal
- Department of Life Science and Bio-chemical Engineering; Sun Moon University; Chungnam Korea
| | - Soo Wohn Lee
- Department of Environmental and Bio-Chemical Engineering; Sun Moon University; Chungnam Korea
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30
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Panahian Y, Arsalani N. Synthesis of Hedgehoglike F-TiO2(B)/CNT Nanocomposites for Sonophotocatalytic and Photocatalytic Degradation of Malachite Green (MG) under Visible Light: Kinetic Study. J Phys Chem A 2017; 121:5614-5624. [DOI: 10.1021/acs.jpca.7b02580] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasaman Panahian
- Research Laboratory of Polymer,
Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Nasser Arsalani
- Research Laboratory of Polymer,
Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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31
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Loganathan C, John SA. Naked eye and spectrophotometric detection of chromogenic insecticide in aquaculture using amine functionalized gold nanoparticles in the presence of major interferents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:837-842. [PMID: 27816882 DOI: 10.1016/j.saa.2016.10.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 10/16/2016] [Indexed: 06/06/2023]
Abstract
Detection of a chromogenic insecticide, malachite green (MG) using 3,5-diamino-1,2,4-triazole capped gold nanoparticles (DAT-AuNPs) by both naked eye and spectrophotometry was described in this paper. The DAT-AuNPs were prepared by wet chemical method and show absorption maximum at 518nm. The zeta potential of DAT-AuNPs was found to be -39.9mV, suggesting that one of the amine groups of DAT adsorbed on the surface of AuNPs and the other amine group stabilizes the AuNPs from aggregation. The wine red color DAT-AuNPs changes to violet while adding 25μM MG whereas the absorption band at 518nm was increased and shifted towards longer wavelength. However, addition of 70μM MG leads to the aggregation of DAT-AuNPs. This is due to strong electrostatic interaction between ammonium ion of MG and the free amine group of DAT. Based on the color change and shift in SPR band, 25 and 5μM MG can be easily detected by naked eye and spectrophotometry. The DAT-AuNPs show high selectivity towards MG even in the presence of 5000-fold higher concentrations of common interferents. The practical application was successfully demonstrated by determining MG in fish farm water.
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Affiliation(s)
- C Loganathan
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram - 624 302, Dindigul, Tamilnadu, India
| | - S Abraham John
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram - 624 302, Dindigul, Tamilnadu, India.
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Mechanism for the elimination of pollutants from aqueous solutions adopting NiR2O4 (R = Fe, Cr and Al) with microwave energy. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.05.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yang X, Zheng J, Lu Y, Jia R. Degradation and detoxification of the triphenylmethane dye malachite green catalyzed by crude manganese peroxidase from Irpex lacteus F17. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:9585-97. [PMID: 26846235 DOI: 10.1007/s11356-016-6164-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/21/2016] [Indexed: 05/11/2023]
Abstract
Malachite green (MG), a recalcitrant, carcinogenic, and mutagenic triphenylmethane dye, was decolorized and detoxified using crude manganese peroxidase (MnP) prepared from the white rot fungus Irpex lacteus F17. In this study, the key factors (pH, temperature, MG, Mn(2+), H2O2, MnP) in these processes were investigated. Under optimal conditions, 96 % of 200 mg L(-1) of MG was decolorized when 66.32 U L(-1) of MnP was added for 1 h. The K m, V max, and k cat values were 109.9 μmol L(-1), 152.8 μmol L(-1) min(-1), and 44.5 s(-1), respectively. The decolorization of MG by MnP followed first-order reaction kinetics with a kinetic rate constant of 0.0129 h(-1). UV-vis and UPLC analysis revealed degradation of MG. Furthermore, seven different intermediates formed during the MnP treatment of 0.5 h were identified by LC-TOF-MS. These degradation products were generated via two different routes by either N-demethylation of MG or the oxidative cleavage of the C-C double bond in MG. Based on ecotoxicity analyses performed on bacteria and algae, it was confirmed that MG metabolites produced by the MnP-catalyzed system were appreciably less toxic than the parent compound. These studies indicate the potential use of this enzyme system in the clean-up of aquatic and terrestrial environments.
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Affiliation(s)
- Xueting Yang
- School of Life Science, Anhui University, Hefei, 230601, People's Republic of China
| | - Jinzhao Zheng
- School of Life Science, Anhui University, Hefei, 230601, People's Republic of China
| | - Yongming Lu
- School of Life Science, Anhui University, Hefei, 230601, People's Republic of China
| | - Rong Jia
- School of Life Science, Anhui University, Hefei, 230601, People's Republic of China.
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Cao M, Wang P, Ao Y, Wang C, Hou J, Qian J. Visible light activated photocatalytic degradation of tetracycline by a magnetically separable composite photocatalyst: Graphene oxide/magnetite/cerium-doped titania. J Colloid Interface Sci 2016; 467:129-139. [PMID: 26799623 DOI: 10.1016/j.jcis.2016.01.005] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 01/04/2016] [Accepted: 01/05/2016] [Indexed: 11/17/2022]
Abstract
In this study, magnetic graphene oxide-loaded Ce-doped titania (MGO-Ce-TiO2) hybridized composite was prepared by a facile method. The as-prepared samples exhibited good adsorption capacity, high visible-light photoactive and magnetic separability as a novel photocatalyst in the degradation of tetracyclines (TC). The intermediate products and photocatalytic route of TC were proposed based on the analysis results of LC-MS. Moreover, the repeatability of the photoactivity with the use of MGO-Ce-TiO2 was investigated in the multi-round experiments with the assistance of an applied magnetic field. Therefore, the prepared composite photocatalysts were considered as a kind of promising photocatalyst in a suspension reaction system, in which they can offer effectively recovery ability. The effect of MGO content on the photocatalytic performance was also studied, and an optimum content was obtained.
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Affiliation(s)
- Muhan Cao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Yanhui Ao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
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SAYILKAN F, EMRE FB. Characterization and photocatalytic properties of TiO$_{2}$/chitosan nanocomposites synthesized by hydrothermal process. Turk J Chem 2016. [DOI: 10.3906/kim-1407-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Ju Y, Yu Y, Wang X, Zhang S, Liu R, Fu J, Han J, Fang J, Dionysiou DD. Environmental application of millimetre-scale sponge iron (s-Fe(0)) particles (III): The effect of surface silver. JOURNAL OF HAZARDOUS MATERIALS 2015; 299:618-629. [PMID: 26276702 DOI: 10.1016/j.jhazmat.2015.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 07/05/2015] [Accepted: 07/06/2015] [Indexed: 06/04/2023]
Abstract
To enhance the dechlorination reactivity of millimetric sponge iron (s-Fe(0)), a facile one-pot method was used to decorate s-Fe(0) with Ag(+) ions under ambient conditions. The results recorded by X-ray diffraction patterns, X-ray photoelectron spectra and high-resolution transmission electron microscopy demonstrated that the growth of Ag(0) was dominated primarily by (111) plane with a mean length of ∼20 nm. The roles of Ag(0) loading, catalyst dosage, particle size, initial pH and contaminant concentration were assessed during the removal of pentachlorophenol (PCP). Catalyst recyclability was also studied. The results revealed that 3-5mm s-Fe(0) particles with 5 wt% Ag(0) loading exhibited the best performance with a dose of 3.0 g per 60 mL PCP solution. In addition, the dechlorination of PCP followed two-step, pseudo-first-order reaction kinetics, and Ag(0)-s-Fe(0) was advantageous compared with bimetals of nanoscale zero-valent iron, iron power and iron flakes. The dechlorination mechanism of PCP over Ag(0)-s-Fe(0) was attributed to the surface Ag(0) decoration, which catalyzed the formation of reactive hydrogen atoms for indirect reaction, and the direct electron transfer via Fe-Ag(0) galvanic cells for direct reaction. This suggests that Ag-based bimetals of s-Fe(0) have great potential in the pretreatment of organic halogen compounds in aqueous solution.
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Affiliation(s)
- Yongming Ju
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China; South China Subcenter of State Environmental Dioxin Monitoring Center, Guangzhou 510655, PR China; Innovative Laboratory for Environmental Functional Materials and Environmental Applications of Microwave Irradiation, Guangzhou 510655, PR China
| | - Yunjiang Yu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China.
| | - Xiaoyan Wang
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China; Innovative Laboratory for Environmental Functional Materials and Environmental Applications of Microwave Irradiation, Guangzhou 510655, PR China
| | - Sukun Zhang
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China
| | - Runlong Liu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China; Innovative Laboratory for Environmental Functional Materials and Environmental Applications of Microwave Irradiation, Guangzhou 510655, PR China
| | - Jianping Fu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China
| | - Jinglei Han
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China
| | - Jiande Fang
- South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Biomedical, Chemical and Environmental Engineering (DBCEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA.
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Roushani M, Mavaei M, Rajabi HR. Graphene quantum dots as novel and green nano-materials for the visible-light-driven photocatalytic degradation of cationic dye. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.08.011] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Lamba R, Umar A, Mehta SK, Anderson WA, Kansal SK. Visible-light-driven photocatalytic properties of self assembled cauliflower-like AgCl/ZnO hierarchical nanostructures. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.07.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Wang H, Zhang D, Mou S, Song W, Al-Misned FA, Golam Mortuza M, Pan X. Simultaneous removal of tetracycline hydrochloride and As(III) using poorly-crystalline manganese dioxide. CHEMOSPHERE 2015; 136:102-10. [PMID: 25966328 DOI: 10.1016/j.chemosphere.2015.04.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 04/06/2015] [Accepted: 04/26/2015] [Indexed: 05/22/2023]
Abstract
Simultaneous removal of antibiotic tetracycline hydrochloride (TC) and As(III) by poorly-crystalline Mn dioxide was investigated. TC and As(III) can be effectively oxidized and removed by MnO2. High concentrations of TC and As(III) competed with each other for oxidation or adsorption sites on MnO2 and thus affected their removal efficiency. The intermediates and products of TC after reaction with poorly-crystalline manganese dioxide were identified by LC-ESI-MS (liquid chromatography-electrospray ionization-mass spectrometry), and the decomposition pathways of TC by MnO2 were proposed. This study is helpful for understanding the importance of environmental Mn dioxides in the decontamination of combined pollution by organic pollutants and metal(loid)s.
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Affiliation(s)
- Huawei Wang
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Daoyong Zhang
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
| | - Shuyong Mou
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, China
| | - Wenjuan Song
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, China
| | - Fahad A Al-Misned
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - M Golam Mortuza
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Department of Zoology, Faculty of Life and Earth Science, Rajshahi University, Rajshahi 6205, Bangladesh
| | - Xiangliang Pan
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Chinese Academy of Sciences, Urumqi 830011, China.
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Chandra MR, Rao TS, Sreedhar B. Recyclable Sn-TiO2/polythiophene nanohybrid material for degradation of organic pollutants under visible-light irradiation. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60944-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Suganya Josephine G, Ramachandran S, Sivasamy A. Nanocrystalline ZnO doped lanthanide oxide: An efficient photocatalyst for the degradation of malachite green dye under visible light irradiation. JOURNAL OF SAUDI CHEMICAL SOCIETY 2015. [DOI: 10.1016/j.jscs.2015.05.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Ghaedi M, Shojaeipour E, Ghaedi AM, Sahraei R. Isotherm and kinetics study of malachite green adsorption onto copper nanowires loaded on activated carbon: artificial neural network modeling and genetic algorithm optimization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 142:135-149. [PMID: 25699703 DOI: 10.1016/j.saa.2015.01.086] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/14/2015] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
In this study, copper nanowires loaded on activated carbon (Cu-NWs-AC) was used as novel efficient adsorbent for the removal of malachite green (MG) from aqueous solution. This new material was synthesized through simple protocol and its surface properties such as surface area, pore volume and functional groups were characterized with different techniques such XRD, BET and FESEM analysis. The relation between removal percentages with variables such as solution pH, adsorbent dosage (0.005, 0.01, 0.015, 0.02 and 0.1g), contact time (1-40min) and initial MG concentration (5, 10, 20, 70 and 100mg/L) was investigated and optimized. A three-layer artificial neural network (ANN) model was utilized to predict the malachite green dye removal (%) by Cu-NWs-AC following conduction of 248 experiments. When the training of the ANN was performed, the parameters of ANN model were as follows: linear transfer function (purelin) at output layer, Levenberg-Marquardt algorithm (LMA), and a tangent sigmoid transfer function (tansig) at the hidden layer with 11 neurons. The minimum mean squared error (MSE) of 0.0017 and coefficient of determination (R(2)) of 0.9658 were found for prediction and modeling of dye removal using testing data set. A good agreement between experimental data and predicted data using the ANN model was obtained. Fitting the experimental data on previously optimized condition confirm the suitability of Langmuir isotherm models for their explanation with maximum adsorption capacity of 434.8mg/g at 25°C. Kinetic studies at various adsorbent mass and initial MG concentration show that the MG maximum removal percentage was achieved within 20min. The adsorption of MG follows the pseudo-second-order with a combination of intraparticle diffusion model.
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Affiliation(s)
- M Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - E Shojaeipour
- Department of Chemistry, Islamic Azad University, Omidiyeh Branch, Omidiyeh, Iran
| | - A M Ghaedi
- Department of Chemistry, Gachsaran Branch, Islamic Azad University, P.O. Box 75818-63876, Gachsaran, Iran
| | - Reza Sahraei
- Department of Chemistry, University of Ilam, P.O. Box 65315-516, Ilam, Iran
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43
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Ju Y, Liu X, Liu R, Li G, Wang X, Yang Y, Wei D, Fang J, Dionysiou DD. Environmental application of millimeter-scale sponge iron (s-Fe(0)) particles (II): the effect of surface copper. JOURNAL OF HAZARDOUS MATERIALS 2015; 287:325-334. [PMID: 25668301 DOI: 10.1016/j.jhazmat.2015.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 01/05/2015] [Accepted: 01/06/2015] [Indexed: 06/04/2023]
Abstract
To enhance the catalytic reactivity of millimeter-scale particles of sponge iron (s-Fe(0)), Cu(2+) ions were deposited on the surface of s-Fe(0) using a simple direct reduction reaction, and the catalytic properties of the bimetallic system was tested for removal of rhodamine B (RhB) from an aqueous solution. The influence of Cu(0) loading, catalyst dosage, particle size, initial RhB concentration, and initial pH were investigated, and the recyclability of the catalyst was also assessed. The results demonstrate that the 3∼5 millimeter s-Fe(0) particles (s-Fe(0)(3∼5mm)) with 5wt% Cu loading gave the best results. The removal of RhB followed two-step, pseudo-first-order reaction kinetics. Cu(0)-s-Fe(0) showed excellent stability after five reuse cycles. Cu(0)-s-Fe(0) possesses great advantages compared to nanoscale zero-valent iron, iron power, and iron flakes as well as its bimetals. The surface Cu(0) apparently catalyzes the production of reactive hydrogen atoms for indirect reaction and generates Fe-Cu galvanic cells that enhance electron transfer for direct reaction. This bimetallic catalyst shows great potential for the pre-treatment of recalcitrant wastewaters. Additionally, some oxides containing iron element are selected to simulate the adsorption process. The results prove that the adsorption process of FeOOH, Fe2O3 and Fe3O4 played minor role for the removal of RhB.
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Affiliation(s)
- Yongming Ju
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China.
| | - Xiaowen Liu
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China.
| | - Runlong Liu
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Guohua Li
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Xiaoyan Wang
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Yanyan Yang
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Dongyang Wei
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Jiande Fang
- South China Institute of Environmental Sciences, The Ministry of Environmental Protection of the PRC, Guangzhou 510655, PR China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Biomedical, Chemical and Environmental Engineering (DBCEE), University of Cincinnati, Cincinnati, Ohio 45221-0012, USA.
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Yong L, Zhanqi G, Yuefei J, Xiaobin H, Cheng S, Shaogui Y, Lianhong W, Qingeng W, Die F. Photodegradation of malachite green under simulated and natural irradiation: kinetics, products, and pathways. JOURNAL OF HAZARDOUS MATERIALS 2015; 285:127-136. [PMID: 25497025 DOI: 10.1016/j.jhazmat.2014.11.041] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 11/24/2014] [Accepted: 11/30/2014] [Indexed: 06/04/2023]
Abstract
In this work photodegradation rates and pathways of malachite green were studied under simulated and solar irradiation with the goal of assessing the potential of photolysis as a removal mechanism in real aquatic environment. Factors influencing the photodegradation process were investigated, including pH, humic acid, Fe(2+), Ca(2+), HCO3(-), and NO3(-), of which favorable conditions were optimized by the orthogonal array design under simulated sunlight irradiation in the presence of dissolved oxygen. The degradation processes of malachite green conformed to pseudo first-order kinetics and their degradation rate constants were between 0.0062 and 0.4012 h(-1). Under solar irradiation, the decolorization efficiency of most tests can reach almost 100%, and relatively thorough mineralization could be observed. Forty degradation products were detected by liquid chromatography-mass spectrometry, and thirteen small molecular products were identified by gas chromatography-mass spectrometry. Based on the analyses of the degradation products and calculation of the frontier electron density, the pathways were proposed: decomposition of conjugated structure, N-demethylation reactions, hydroxyl addition reactions, the removal of benzene ring, and the ring-opening reaction. This study has provided a reference, both for photodegradation of malachite green and future safety applications and predictions of decontamination of related triphenylmethane dyes under real conditions.
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Affiliation(s)
- Li Yong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Gao Zhanqi
- State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Jiangsu Provincial Environmental Monitoring Center, Nanjing 210036, China
| | - Ji Yuefei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hu Xiaobin
- School of Life Science, Huzhou University, Huzhou 313000, China
| | - Sun Cheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Yang Shaogui
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wang Lianhong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wang Qingeng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Fang Die
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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45
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Li Z, Tang B, Zhang H. Investigation on the interaction between an antimicrobial in aquaculture, malachite green and hemocyanin from mud crab Scylla paramamosain. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:669-675. [PMID: 25128680 DOI: 10.1016/j.saa.2014.07.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 07/07/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
Interaction between malachite green and hemocyanin of crab plays a crucial role in the metabolism, distribution, and efficacy of toxic dyes in aquaculture. The mechanism of interaction between malachite green and Hc from mud crab was studied by using multi-spectral methods and molecular modeling in this work. The spectroscopic and thermodynamic data show that the interaction is a spontaneous process with the estimated enthalpy and entropy changes of -14.85(±1.86) kJ mol(-1) and 30.38(±5.21) J mol(-1) K(-1), respectively. The binding sites of malachite green in hemocyanin mainly locate in the interface of protein. The hydrophobic and electrostatic forces are the primary contributors to the interaction between hemocyanin and malachite green. The results of ultraviolet-vis absorbance, circular dichroism, and synchronous fluorescence spectroscopy suggest that the binding of malachite green to hemocyanin induces some conformational changes of protein.
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Affiliation(s)
- Zhenxing Li
- Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng City, Jiangsu Province 224002, People's Republic of China
| | - Boping Tang
- Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Hongmei Zhang
- Institute of Applied Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
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46
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Rayaroth MP, Aravind UK, Aravindakumar CT. Sonochemical degradation of Coomassie Brilliant Blue: effect of frequency, power density, pH and various additives. CHEMOSPHERE 2015; 119:848-855. [PMID: 25222624 DOI: 10.1016/j.chemosphere.2014.08.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 08/11/2014] [Accepted: 08/13/2014] [Indexed: 05/03/2023]
Abstract
Coomassie Brilliant Blue (CBB), discharged mainly from textile industries, is an identified water pollutant. Ultrasound initiated degradation of organic pollutants is one among the promising techniques and forms part of the Advanced Oxidation Processes (AOPs). Ultrasonic degradation of CBB under different experimental conditions has been investigated in the present work. The effect of frequency (200 kHz, 350 kHz, 620 kHz and 1 MHz) and power density (3.5 W mL(-1), 9.8 W mL(-1) and 19.6 W mL(-1)) on the degradation profile was evaluated. The optimum performance was obtained at 350 kHz and 19.6 W mL(-1). Similar to other sonolytic degradation of organic pollutants, maximum degradation of CBB was observed under acidic pH. The degradation profile indicated a pseudo-first order kinetics. The addition of ferrous ion (1×10(-4) M), hydrogen peroxide (1×10(-4) M), and peroxodisulphate (1×10(-4) M) had a positive effect on the degradation efficiency. The influence of certain important NOM like SDS and humic acid on the sonolytic degradation of CBB was also investigated. Both the compounds suppress the degradation efficiency. LC-Q-TOF-MS was used to identify the stable intermediate products. Nearly 13 transformed products were identified during 10min of sonication using the optimized operational parameters. This product profile demonstrated that most of the products are formed mainly by the OH radical attack. On the basis of these results, a degradation mechanism is proposed.
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Affiliation(s)
- Manoj P Rayaroth
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Usha K Aravind
- Advanced Centre of Environmental Studies and Sustainable Development, Mahatma Gandhi University, Kottayam, Kerala, India
| | - Charuvila T Aravindakumar
- School of Environmental Sciences, Mahatma Gandhi University, Kottayam, Kerala, India; Inter University Instrumentation Centre, Mahatma Gandhi University, Kottayam, Kerala, India.
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Ju Y, Liu X, Li Z, Kang J, Wang X, Zhang Y, Fang J, Dionysiou DD. Environmental application of millimetre-scale sponge iron (s-Fe⁰) particles (I): pretreatment of cationic triphenylmethane dyes. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:469-479. [PMID: 25464285 DOI: 10.1016/j.jhazmat.2014.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 06/04/2023]
Abstract
To investigate the removal capability of millimetric zero valent iron (mmZVI), sponge iron (s-Fe(0)) particles were characterized with XRD, XPS, TEM, HRSEM and EDS techniques. Moreover, the roles of particle size, catalyst dosage, dye concentration, mixing conditions (e.g. ultrasound (US), stirring or shaking), and regeneration treatment were studied with the removal of cationic triphenylmethane dyes. Notably, the reduction process was also revealed as compared to nanoscale zero valent iron (nZVI), microscale iron power, and iron scurf. Furthermore, the reductive mechanism was exemplified with brilliant green. The results demonstrated that (1) the synergetic effect between US and s-Fe(0) greatly enhanced the removal of dyes, (2) the dosage of preferred s-Fe(0) (1-3mm) particles was optimized as 30.0g/L; (3) reuse cycles of s-Fe(0) catalyst were enhanced with the assistance of diluted HCl solution; (4) the main degradation routes included the cleavage of conjugated structure reactions, N-de-ethylation reactions, hydroxylation reactions, the removal of benzene ring reactions, and opening ring reactions. Accordingly, the pretreatment of aqueous solution over s-Fe(0) was hypothesized to achieve mainly through direct reduction reaction by electron transfer and indirect reductive reactions by the highly activated hydrogen atom. Additionally, decoration with noble metals was utilized to reveal the reaction mechanism.
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Affiliation(s)
- Yongming Ju
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China.
| | - Xiaowen Liu
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China.
| | - Zhaoyong Li
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China
| | - Juan Kang
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China
| | - Xiaoyan Wang
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China
| | - Yukui Zhang
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China
| | - Jiande Fang
- South China Institute of Environmental Sciences, the Ministry of Environmental Protection of PRC, Guangzhou 510655, PR China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH 45221-0012, USA.
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Synthesis and Characterization of Highly Efficient Nickel Nanocatalysts and Their Use in Degradation of Organic Dyes. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/126103] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present study describes the synthesis of highly active and ordered structures of nickel nanocatalysts by a facile, green, and economically viable approach. The study reveals efficient catalytic activity for the degradation of a number of toxic organic dyes, such as eosin-B (EB), rose bengal (RB), eriochrome black-T (ECBT), and methylene blue (MB). The stable ordered nickel nanostructure (Ni NSs) arrays were prepared via a modified hydrazine reduction route with unique and controlled morphologies in a lyotropic liquid crystalline medium using a nonionic surfactant (Triton X-100). Characterization and optimization studies for the fabricated Ni NSs involving their surface binding interactions, size, and morphologies were carried out using UV-Vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM).
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Ju Y, Wang X, Qiao J, Li G, Wu Y, Li Y, Zhang X, Xu Z, Qi J, Fang J, Dionysiou DD. Could microwave induced catalytic oxidation (MICO) process over CoFe2O4 effectively eliminate brilliant green in aqueous solution? JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 2:600-609. [PMID: 24220199 DOI: 10.1016/j.jhazmat.2013.10.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 10/07/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
In this study, we adopted the chemical co-precipitation (CP) method and sol-gel method followed by calcination at temperatures of 100-900°C for 12h to synthesize CoFe2O4 materials, which were further characterized by TEM, XRD and XPS techniques. The properties of CoFe2O4 materials were evaluated in a microwave (MW) induced catalytic oxidation (MICO) process for the elimination of brilliant green (BG). The results showed that: (1) the removal rates of BG gradually decreased over a series of CoFe2O4 materials prepared by CP method and calcinated with 100-700°C (except 900°C) for 12h within three reuse cycles; for comparison, no removal of BG was obtained over CoFe2O4 synthesized by sol-gel method and CoFe2O4-900 (CP); (2) no hydroxyl radicals were captured with salicylic acid used as molecular probe in the MICO process; (3) MW irradiation enhanced the release of residual NaOH within the microstructure of CoFe2O4 and further discolored BG, because BG is sensitive to pH; (4) granular activated carbon (GAC), an excellent MW-absorbing material possessing higher dielectric loss tangent compared to that of a series of CoFe2O4 materials, could not remove BG in suspensions at a higher efficiency, even if the loading amount was 20 g L(-1). Accordingly, MICO process over CoFe2O4 materials and GAC could not effectively eliminate BG in suspensions.
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Affiliation(s)
- Yongming Ju
- South China Institute of Environmental Science, Ministry of Environmental Protection (MEP), Guangzhou 510655, PR China.
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