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Tahir S, Zahid M, Hanif MA, Javed MY. g-C 3N 4/graphene oxide/SnFe 2O 4 ternary composite for the effective sunlight-driven photocatalytic degradation of methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:125540-125558. [PMID: 37999848 DOI: 10.1007/s11356-023-31096-1] [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: 06/09/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
A broadly used dye, methylene blue (MB), adversely impacts human health and water resources, which triggers efficient methods for its elimination. Semiconductor-based heterogeneous photocatalysis is an environmentally friendly approach that effectively degrades organic pollutants. The purpose of the current work is to elucidate and validate the application of a promising g-C3N4/GO/SnFe2O4 (CGS) composite for the environmental remediation of methylene blue dye. The ternary CGS composite has been synthesized using a solvothermal approach. The fabricated composites were analyzed through FTIR, XRD, SEM/EDX, UV-VIS spectroscopy, TEM, and XPS. The photoactivity of composites and affecting parameters (pH, H2O2 dosage, composite amount, initial dye concentration, and irradiation time) were observed in sunlight illumination. The optimal conditions for photocatalytic degradation were pH = 5, photocatalyst dosage = 30 mg/100 mL, H2O2 dosage = 6 mM, and initial dye concentration (IDC) of 10 ppm employing ternary CGS composite, and MB dye was degraded effectively within 1 h. Ninety-eight percent degradation efficacy was attained by employing ternary CGS composite under the optimized conditions. Scavenging analysis suggested that •OH radicals were the key reactive oxygen species (ROS) responsible for the photodegradation of MB dye. Furthermore, the CGS nanocomposite exhibited outstanding recyclability of 84% after five consecutive runs, demonstrating its potential for use in practical applications, particularly pollutant removal.
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Affiliation(s)
- Suman Tahir
- Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Muhammad Zahid
- Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan.
| | - Muhammad Asif Hanif
- Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
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Wei X, Naraginti S, Yang X, Xu X, Li J, Sun J, Liu Z, Pei J. A novel magnetic AgVO 3/rGO/CuFe 2O 4 hybrid catalyst for efficient hydrogen evolution and photocatalytic degradation. ENVIRONMENTAL RESEARCH 2023; 229:115948. [PMID: 37105284 DOI: 10.1016/j.envres.2023.115948] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/08/2023] [Accepted: 04/18/2023] [Indexed: 05/21/2023]
Abstract
A superior semiconductor material with efficient charge separation and easy reuse could be a promising route for efficient photocatalytic hydrogen evolution and pollutant degradation. AgVO3 is one of the best visible light active materials which has attracted much attention for several biological and environmental applications. In the aim of enhancing its stability and recyclability a novel AgVO3/rGO/CuFe2O4 heterojunction was prepared by hydrothermal method for hydrogen generation (H2) and 4-nitrophenol (4-NP) degradation as well. The composite was well characterized by XRD, SEM, HR-TEM, XPS and VSM. The morphological images suggested the rod shaped AgVO3 and irregular shaped CuFe2O4 are unevenly distributed on reduced graphene oxide (rGO) layers. The hydrogen evolution results indicated that the composite showed around 8.937 mmol g-1h-1 of H2 generation which was ∼2.3 times and ∼9.2 times higher than pure AgVO3 (3.895 mmol g-1h-1) and CuFe2O4 (0.96 mmol g-1h-1) respectively. The 4-NP degradation efficiency of the prepared composite was observed as 94.7% (k = 0.01841 min-1) which is much higher than the AgVO3 (66.3%) and CuFe2O4 (38.2%) after 4 h of irradiation. The higher efficiency could be attributed to the heterojunction formation and faster charge separation. The radical trapping results indicated that the •OH, O2•- and photogenerated h+ are the main species responsible for efficient activity. The AgVO3/rGO/CuFe2O4 heterojunction showed 49.6 emu/g of saturation magnetization and confirms that it could be easily separated with an external magnet, and showed 85.3% of degradation efficiency even after 6 recycles which indicated its higher stability and recyclability. Thus, our study provides new insight into hydrogen generation and phenol degradation using AgVO3 based recyclable composites.
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Affiliation(s)
- Xueyu Wei
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Saraschandra Naraginti
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaofan Yang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaoping Xu
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Jiyuan Li
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Junwei Sun
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Zhigang Liu
- Ningbo Water Environment Group Co Ltd, Ningbo, 315041, PR China
| | - Jiang Pei
- College of Environment, Hohai University, Nanjing, 210098, PR China
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Cation Incorporation and Synergistic Effects on the Characteristics of Sulfur-Doped Manganese Ferrites S@Mn(Fe 2O 4) Nanoparticles for Boosted Sunlight-Driven Photocatalysis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227677. [PMID: 36431778 PMCID: PMC9693046 DOI: 10.3390/molecules27227677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/21/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
Abstract
In the present work, sulfur-doped manganese ferrites S@Mn(Fe2O4) nanoparticles were prepared by using the sol-gel and citrate method. The concentration of sulfur varied from 1 to 7% by adding Na2S. The samples were characterized by performing Fourier Transformed Infrared Spectroscopy (FTIR), Energy Dispersive X-ray (EDX), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Ultraviolet-Visible spectroscopy (UV-Visible). The synthesized sulfur-doped manganese ferrites were applied to evaluate the photocatalytic degradation of the dyes. Further, the degradation studies revealed that the nanoparticles successfully degraded the methylene blue dye by adding a 0.006 g dose under the sunlight. The sulfur-doped manganese ferrite nanoparticles containing 3% sulfur completely degraded the dye in 2 h and 15 min in aqueous medium. Thus, the ferrite nanoparticles were found to be promising photocatalyst materials and could be employed for the degradation of other dyes in the future.
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Jia Y, Han H, Luo Y, Wang Q, Wha Lee B, Liu C. SrTiO3 nanosheets decorated with ZnFe2O4 nanoparticles as Z-scheme photocatalysts for highly efficient photocatalytic degradation and CO2 conversion. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Li S, Hasan N, Ma H, Li OL, Lee B, Jia Y, Liu C. Significantly enhanced photocatalytic activity by surface acid corrosion treatment and Au nanoparticles decoration on the surface of SnFe2O4 nano-octahedron. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121650] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Hierarchical Nanoflowers of MgFe2O4, Bentonite and B-,P- Co-Doped Graphene Oxide as Adsorbent and Photocatalyst: Optimization of Parameters by Box–Behnken Methodology. Int J Mol Sci 2022; 23:ijms23179678. [PMID: 36077079 PMCID: PMC9455985 DOI: 10.3390/ijms23179678] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/22/2022] [Accepted: 08/22/2022] [Indexed: 11/29/2022] Open
Abstract
In the present study, nanocomposites having hierarchical nanoflowers (HNFs) -like morphology were synthesized by ultra-sonication approach. HNFs were ternary composite of MgFe2O4 and bentonite with boron-, phosphorous- co-doped graphene oxide (BPGO). The HNFs were fully characterized using different analytical tools viz. X-ray photoelectron spectroscopy, scanning electron microscopy, energy dispersion spectroscopy, transmission electron microscopy, X-ray diffraction, vibrating sample magnetometry and Mössbauer analysis. Transmission electron micrographs showed that chiffon-like BPGO nanosheets were wrapped on the MgFe2O4-bentonite surface, resulting in a porous flower-like morphology. The red-shift in XPS binding energies of HNFs as compared to MgFe2O4-bentoniteand BPGO revealed the presence of strong interactions between the two materials. Box–Behnken statistical methodology was employed to optimize adsorptive and photocatalytic parameters using Pb(II) and malathion as model pollutants, respectively. HNFs exhibited excellent adsorption ability for Pb(II) ions, with the Langmuir adsorption capacity of 654 mg g−1 at optimized pH 6.0 and 96% photocatalytic degradation of malathion at pH 9.0 as compared to MgFe2O4-bentonite and BPGO. Results obtained in this study clearly indicate that HNFs are promising nanocomposite for the removal of inorganic and organic contaminants from the aqueous solutions.
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Tiwari D, Lee SM, Kim DJ. Photocatalytic degradation of amoxicillin and tetracycline by template synthesized nano-structured Ce 3+@TiO 2 thin film catalyst. ENVIRONMENTAL RESEARCH 2022; 210:112914. [PMID: 35182591 DOI: 10.1016/j.envres.2022.112914] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/13/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Contamination of the aquatic environment with pharmaceutical compounds is a serious environmental concern. The present investigation aims to utilize the Ce3+/TiO2 thin film catalyst to remove of potential antibiotics (amoxicillin and tetracycline) using the less harmful UV-A radiations. Reduced cerium ion-doped TiO2 is obtained by a simple one-step facile template method using polyethylene glycol as the templating agent. The synthesized catalysts Ce3+@TiO2 (non-template) and Ce3+@TiO2(T) (template) were characterized by spectroscopic methods. The XPS reaffirms the reduced Ce3+ dispersed within the titania network, and the AFM showed the surface roughness of the thin films. Detailed physicochemical analyses were conducted to deduce the degradation mechanism, and repeated use of the thin film photocatalyst showed enhanced stability. Significant mineralization of the antibiotics indicates the potential applicability of the photocatalytic catalyst. Furthermore, the presence of Ce3+ significantly restricted the recombination of electron/hole pairs in the photo-excited TiO2 semiconductor and showed enhanced photocatalytic degradation of the antibiotics proceeded predominantly through the •OH.
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Affiliation(s)
- Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, 796004, India.
| | - Seung-Mok Lee
- Department of Health and Environment, Catholic Kwandong University, Gangneung, 25601, South Korea
| | - Dong-Jin Kim
- Department of Environmental Science & Biotechnology, Hallym University, Chuncheon, 24252, South Korea.
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8
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Acharya R, Pati S, Parida K. A review on visible light driven spinel ferrite-g-C3N4 photocatalytic systems with enhanced solar light utilization. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119105] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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9
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Lalliansanga, Tiwari D, Tiwari A, Shukla A, Shim MJ, Lee SM. Facile synthesis and characterization of Ag(NP)/TiO2 nanocomposite: Photocatalytic efficiency of catalyst for oxidative removal of Alizarin Yellow. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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10
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Jain M, Khan SA, Pandey A, Pant KK, Ziora ZM, Blaskovich MAT. Instructive analysis of engineered carbon materials for potential application in water and wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148583. [PMID: 34328999 DOI: 10.1016/j.scitotenv.2021.148583] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/02/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Water remediation is an essential component for sustainable development. Increasing population and rapid industrialization have contributed to the deterioration of water resources. In particular, effluents from chemical, pharmaceutical, petroleum industries, and anthropogenic activities have led to severe ecological degradation. Many of these detrimental pollutants are highly toxic even at low concentrations, acting as carcinogens and inflicting severe long-lasting effects on human health. This review underscores the potential applications of engineered carbon-based materials for effective wastewater treatment. It focuses on the performance as well as efficiency of activated carbon, graphene nanomaterial, and carbon nanotubes, both with and without chemical functionalization. Plausible mechanisms of action between the chemically functionalized adsorbent and pollutants are also discussed. Based on the keywords from the literature published in the recent five years, a statistical practicality-vs-applicability analysis of these three materials is also provided. The review will provide a deep understanding of the physical or chemical interactions of the wastewater pollutants with carbon materials.
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Affiliation(s)
- Marut Jain
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India
| | - Sadaf Aiman Khan
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India
| | - Ashish Pandey
- Department of Chemical Engineering, Indian Institute of Technology Delhi, India
| | - Kamal Kishore Pant
- Department of Chemical Engineering, Indian Institute of Technology Delhi, India.
| | - Zyta Maria Ziora
- Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Mark A T Blaskovich
- Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
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11
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Wei X, Yang X, Xu X, Liu Z, Naraginti S, Wan J. Novel magnetically separable tetrahedral Ag 3PO 4/NrGO/CuFe 2O 4 photocatalyst for efficient detoxification of 2,4-dichlorophenol. ENVIRONMENTAL RESEARCH 2021; 201:111519. [PMID: 34139224 DOI: 10.1016/j.envres.2021.111519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/23/2021] [Accepted: 06/07/2021] [Indexed: 06/12/2023]
Abstract
An effective as well as eco-friendly photodegradation methods by atoxic and easily reusable photocatalysts are essential for wastewater treatment. Silver phosphate (Ag3PO4) specifically in tetrahedral shape is one of the superior catalysts under visible light but its photocorrosion, poor electron transfer ability and low surface adsorption properties limits its applications. Combination of Ag3PO4 and nitrogen doped reduced graphene oxide (NrGO) having higher in surface area, ample functional groups and hetero atom doping is expected to get over the problem. Further addition of a spinel ferrite (CuFe2O4) could enhance the visible light response activity and helps in easy separation of catalyst for reuse. Given the merits of Ag3PO4, NrGO and CuFe2O4 we rationally integrated a novel magnetically separable stable Ag3PO4/NrGO/CuFe2O4 photocatalyst for efficient detoxification of 2,4-dichlorophenol (2,4-DCP). About 95.3% degradation efficiency was achieved by Ag3PO4/NrGO/CuFe2O4 (k = 0.01978 min-1) which was ~2.6 times higher than pure Ag3PO4 (k = 0.00747 min-1) in 60 min of visible light irradiation. The Ag3PO4/NrGO/CuFe2O4 heterojunction was able to separate and recycle easily using an external magnetic field due to its strong magnetism, and after 5 recycles it showed 88.6% of degradation efficiency revealed its higher stability and recyclability. The photocatalytic mechanism of Ag3PO4/NrGO/CuFe2O4 was explained by heterojunction energy-band theory. In addition, the plausible intermediate products of 2,4-dichlorophenol were analyzed by ESI/LC-MS and proposed the pathway. Moreover, the phytotoxicity was also studied on V. radiata in which GI (germination index) was found to be 11.97% before degradation, while 80.31% of GI was observed in 60 min of degradation which revealed that more significant reduction in toxicity was attained on this photodegradation.
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Affiliation(s)
- Xueyu Wei
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaofan Yang
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaoping Xu
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Zhigang Liu
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China; Ningbo Water Supply Co Ltd, Ningbo, 315041, PR China
| | - Saraschandra Naraginti
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Jie Wan
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
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12
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Mourdikoudis S, Kostopoulou A, LaGrow AP. Magnetic Nanoparticle Composites: Synergistic Effects and Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004951. [PMID: 34194936 PMCID: PMC8224446 DOI: 10.1002/advs.202004951] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Indexed: 05/17/2023]
Abstract
Composite materials are made from two or more constituent materials with distinct physical or chemical properties that, when combined, produce a material with characteristics which are at least to some degree different from its individual components. Nanocomposite materials are composed of different materials of which at least one has nanoscale dimensions. Common types of nanocomposites consist of a combination of two different elements, with a nanoparticle that is linked to, or surrounded by, another organic or inorganic material, for example in a core-shell or heterostructure configuration. A general family of nanoparticle composites concerns the coating of a nanoscale material by a polymer, SiO2 or carbon. Other materials, such as graphene or graphene oxide (GO), are used as supports forming composites when nanoscale materials are deposited onto them. In this Review we focus on magnetic nanocomposites, describing their synthetic methods, physical properties and applications. Several types of nanocomposites are presented, according to their composition, morphology or surface functionalization. Their applications are largely due to the synergistic effects that appear thanks to the co-existence of two different materials and to their interface, resulting in properties often better than those of their single-phase components. Applications discussed concern magnetically separable catalysts, water treatment, diagnostics-sensing and biomedicine.
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Affiliation(s)
- Stefanos Mourdikoudis
- Biophysics GroupDepartment of Physics and AstronomyUniversity College LondonLondonWC1E 6BTUK
- UCL Healthcare Biomagnetic and Nanomaterials Laboratories21 Albemarle StreetLondonW1S 4BSUK
| | - Athanasia Kostopoulou
- Institute of Electronic Structure and Laser (IESL)Foundation for Research and Technology‐Hellas (FORTH)100 Nikolaou PlastiraHeraklionCrete70013Greece
| | - Alec P. LaGrow
- International Iberian Nanotechnology LaboratoryBraga4715‐330Portugal
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Yang X, Chen Z, Zhao W, Liu C, Qian X, Zhang M, Wei G, Khan E, Hau Ng Y, Sik Ok Y. Recent advances in photodegradation of antibiotic residues in water. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 405:126806. [PMID: 32904764 PMCID: PMC7457966 DOI: 10.1016/j.cej.2020.126806] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/11/2020] [Accepted: 08/24/2020] [Indexed: 05/21/2023]
Abstract
Antibiotics are widely present in the environment due to their extensive and long-term use in modern medicine. The presence and dispersal of these compounds in the environment lead to the dissemination of antibiotic residues, thereby seriously threatening human and ecosystem health. Thus, the effective management of antibiotic residues in water and the practical applications of the management methods are long-term matters of contention among academics. Particularly, photocatalysis has attracted extensive interest as it enables the treatment of antibiotic residues in an eco-friendly manner. Considerable progress has been achieved in the implementation of photocatalytic treatment of antibiotic residues in the past few years. Therefore, this review provides a comprehensive overview of the recent developments on this important topic. This review primarily focuses on the application of photocatalysis as a promising solution for the efficient decomposition of antibiotic residues in water. Particular emphasis was laid on improvement and modification strategies, such as augmented light harvesting, improved charge separation, and strengthened interface interaction, all of which enable the design of powerful photocatalysts to enhance the photocatalytic removal of antibiotics.
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Affiliation(s)
- Xiuru Yang
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Zhi Chen
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Wan Zhao
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Chunxi Liu
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Xiaoxiao Qian
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Ming Zhang
- Department of Environmental Engineering, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Guoying Wei
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone Hangzhou, 310018, China
| | - Eakalak Khan
- Department of Civil and Environmental Engineering and Construction, University of Nevada, Las Vegas, NV 89154, USA
| | - Yun Hau Ng
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region, China
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, South Korea
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14
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Tiwari D, Lee SM, Kim DJ. New insights in photocatalytic removal of Alizarin Yellow using reduced Ce 3+/TiO 2 catalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:8373-8383. [PMID: 33058080 DOI: 10.1007/s11356-020-11087-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 09/30/2020] [Indexed: 05/24/2023]
Abstract
The present communication aims to obtain a novel Ce3+/TiO2 thin film in a single step facile method using the in situ template process. The material was characterized by the XRD (X-ray diffraction), XPS (X-ray photoelectron spectroscopy), TEM (transmission electron microscope), and AFM (atomic force microscope) analyses. The thin film catalyst was intended to introduce in the degradation of one of potential dye Alizarin Yellow from aqueous solutions using the UV-A radiations. The mechanisms of degradation along with the physicochemical parametric studies were conducted extensively. The mineralization of pollutant and the replicate use of catalysts further enhance the applicability of present communication. Additionally, the real matrix treatment was conducted to simulate the treatment process.
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Affiliation(s)
- Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, 796004, India.
| | - Seung Mok Lee
- Department of Health and Environment, Catholic Kwandong University, 24, Beomil-ro 579beon-gil, Gangneung, 210-701, Republic of Korea
| | - Dong-Jin Kim
- Department of Environmental Science & Biotechnology, Hallym University, Chuncheon, 24252, Republic of Korea
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15
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Khan MAM, Khan W, Ahamed M, Ahmed J, Al-Gawati MA, Alhazaa AN. Silver-Decorated Cobalt Ferrite Nanoparticles Anchored onto the Graphene Sheets as Electrode Materials for Electrochemical and Photocatalytic Applications. ACS OMEGA 2020; 5:31076-31084. [PMID: 33324816 PMCID: PMC7726761 DOI: 10.1021/acsomega.0c04191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 10/29/2020] [Indexed: 06/12/2023]
Abstract
The present work describes the synthesis of Ag-CoFe2O4/rGO nanocomposite as a photocatalyst through the hydrothermal process by the attachment of silver and cobalt ferrite (CoFe2O4) nanoparticles on the surface of reduced graphene oxide. The effect of Ag and reduced graphene oxide (rGO) on the structure, optical, magnetic, photocatalytic, and electrochemical performance of the CoFe2O4 is systematically explored through various analytical techniques. The analyses of the observed outcomes reveal that the graphene sheets are exfoliated and decorated with well-dispersed Ag and CoFe2O4 nanoparticles. UV-vis spectra indicate a gradual shift in the absorption edge toward the higher wavelength with the addition of Ag ions, which signifies variation in the energy gap of the samples. Photoluminescence results divulge that graphene can decline the electron-hole recombination rate and improve the photocatalytic activity of the Ag-CoFe2O4/rGO nanocomposite. In this context, the Ag-CoFe2O4/rGO sample presents good catalytic activity as compared to the CoFe2O4 and Ag-CoFe2O4 photocatalysts for the degradation of methylene blue (MB) dye and suggests that the rGO plays a vital role in the Ag-CoFe2O4/rGO nanocomposite. The deterioration rate of the samples is found to be in the order of CoFe2O4(78.03%) < Ag-CoFe2O4(83.04%) < Ag-CoFe2O4/rGO(93.25%) in 100 min for MB dye, respectively, under visible-light irradiation. The room-temperature ferromagnetic behavior of the samples is confirmed by the M-H hysteresis loop measurements. Overall, the Ag-CoFe2O4/rGO nanocomposite promises to be a strong magnetic photocatalyst for contaminated wastewater treatment. The electrochemical performance of all of the samples was examined by the cyclic voltammetry (CV) that exhibits a superior rate performance and cycle stability of the Ag-CoFe2O4/rGO nanocomposite as compared to the other samples.
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Affiliation(s)
- M. A. Majeed Khan
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Wasi Khan
- Department
of Physics, Aligarh Muslim University, Aligarh 202002, India
| | - Maqusood Ahamed
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Jahangeer Ahmed
- Department
of Chemistry, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - M. A. Al-Gawati
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulaziz N. Alhazaa
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Tiwari A, Shukla A, Tiwari D, Lee SM. Synthesis and characterization of Ag 0(NPs)/TiO 2 nanocomposite: insight studies of triclosan removal from aqueous solutions. ENVIRONMENTAL TECHNOLOGY 2020; 41:3500-3514. [PMID: 31074687 DOI: 10.1080/09593330.2019.1615127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Nanocomposite mesoporous Ag0(NPs)/TiO2 thin film materials were synthesized and assessed for its efficient application in the elimination of potentially important drug triclosan from aqueous solutions. A template synthesis using the polyethylene glycol was enabled to obtain Ag0(NPs)/TiO2 nanocomposite materials where zerovalent Ag was in situ doped to the titania network. The nanocomposite materials were characterized by the scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), EDX elemental mapping, X-ray diffraction (XRD) analyses and Brunauer-Emmett-Teller (BET) methods. Further, the diffuse reflectance spectroscopy (DRS) was introduced to estimate the band gap of these solids. The thin film materials were subjected to the remediation of water contaminated with triclosan using the UV-A light. The oxidative elimination of triclosan was demonstrated as a function of pH, concentration of triclosan and presence of several co-existing ions. Increase in pH (4.0-10.0) and triclosan concentrations (0.5-15.0 mg/L) had decreased significantly the percentage degradation of triclosan. The pseudo-first-order kinetics was shown in the degradation of triclosan and rate constant was significantly decreased with the increase in pollutant concentration (0.5-15.0 mg/L) and pH (4.0-10.0). The 1000 times presence of scavengers showed that •OH were, predominantly, caused the oxidation of triclosan. Moreover, multiple application of nanocomposite Ag0(NPs)/TiO2(B) revealed that the thin film was fairly intact since the photocatalytic efficiency of triclosan removal was almost unaffected.
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Affiliation(s)
- Alka Tiwari
- Department of Physics, National Institute of Technology, Aizawl, India
| | - Alok Shukla
- Department of Physics, National Institute of Technology, Aizawl, India
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, India
| | - Seung Mok Lee
- Department of Health and Environment, Catholic Kwandong University, Gangneung, Gangwondo, Korea
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17
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Nakarmi A, Bourdo SE, Ruhl L, Kanel S, Nadagouda M, Kumar Alla P, Pavel I, Viswanathan T. Benign zinc oxide betaine-modified biochar nanocomposites for phosphate removal from aqueous solutions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 272:111048. [PMID: 32677621 DOI: 10.1016/j.jenvman.2020.111048] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/05/2020] [Accepted: 07/03/2020] [Indexed: 05/12/2023]
Abstract
Phosphate is one of the most costly and complex environmental pollutants that leads to eutrophication, which decreases water quality and access to clean water. Among different adsorbents, biochar is one of the promising adsorbents for phosphate removal as well as heavy metal removal from an aqueous solution. In this study, biochar was impregnated with nano zinc oxide in the presence of glycine betaine. The Zinc Oxide Betaine-Modified Biochar Nanocomposites (ZnOBBNC) proved to be an excellent adsorbent for the removal of phosphate, exhibiting a maximum adsorption capacity of phosphate (265.5 mg. g-1) and fast adsorption kinetics (~100% removal at 15 min at 10 mg. L-1 phosphate and 3 g. L-1 nanocomposite dosage) in phosphate solution. The synthesis of these benign ZnOBBNC involves a process that is eco-friendly and economically feasible. From material characterization, we found that the ZnOBBNC has ~20-30 nm particle size, high surface area (100.01 m2. g-1), microporous (25.79 Å) structures, and 7.64% zinc content. The influence of pH (2-10), coexisting anions (Cl-, CO32-, NO3- and SO43-), initial phosphate concentration (10-500 mg. L-1), and ZnOBBNC dosage (0.5-5 g. L-1) were investigated in batch experiments. From the adsorption isotherms data, the adsorption of phosphate using ZnOBBNC followed Langmuir isotherm (R2 = 0.9616), confirming the mono-layered adsorption mechanism. The kinetic studies showed that the phosphate adsorption using ZnOBBNC followed the pseudo-second-order model (R2 = 1.0000), confirming the chemisorption adsorption mechanism with inner-sphere complexion. Our results demonstrated ZnOBBNC as a suitable, competitive candidate for phosphate removal from both mock lab-prepared and real field-collected wastewater samples when compared to commercial nanocomposites.
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Affiliation(s)
- Amita Nakarmi
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA.
| | - Shawn E Bourdo
- Center for Integrative Nanotechnology Science, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Laura Ruhl
- Department of Earth Sciences, University of Arkansas at Little Rock, USA
| | - Sushil Kanel
- Pegasus Technical Services, Inc., 46 E. Hollister Street, Cincinnati, OH, 45219, USA
| | - Mallikarjuna Nadagouda
- The United States Environmental Protection Agency, ORD, CESER, WID, CMTB, 26 W. Martin Luther King Drive, Cincinnati, OH, 45268, United States
| | - Praveen Kumar Alla
- Department of Chemistry, Wright State University, Dayton, OH, 45435, USA
| | - Ioana Pavel
- Department of Chemistry, Wright State University, Dayton, OH, 45435, USA
| | - Tito Viswanathan
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA.
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Mahmood Q, Ul Haq B, Rashid M, Noor N, AlFaify S, Laref A. First-principles study of magnetic and thermoelectric properties of SnFe2O4 and SnCo2O4 spinels. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121279] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Lalliansanga, Tiwari D, Tiwari A, Shukla A, Kim DJ, Yoon YY, Lee SM. Facile synthesis and characterization of nanocomposite Au0(NPs)/titanium dioxide: Photocatalytic degradation of Alizarin Yellow. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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20
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Silvestri S, Ferreira CD, Oliveira V, Varejão JM, Labrincha JA, Tobaldi DM. Synthesis of PPy-ZnO composite used as photocatalyst for the degradation of diclofenac under simulated solar irradiation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.02.034] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Kumbhakar P, Pramanik A, Biswas S, Kole AK, Sarkar R, Kumbhakar P. In-situ synthesis of rGO-ZnO nanocomposite for demonstration of sunlight driven enhanced photocatalytic and self-cleaning of organic dyes and tea stains of cotton fabrics. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:193-203. [PMID: 30099362 DOI: 10.1016/j.jhazmat.2018.07.103] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/04/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Recently, research activities are focused on development of 2D reduced graphene oxide (rGO) based semiconductor nanocomposite materials for boosting up its catalytic applications. In this work, a rarely reported green synthesis approach has been envisioned to synthesize in-situ 2D rGO-ZnO (rGZn) nanocomposites from Apple juice and zinc acetate. Also the composition of the samples has been optimized to achieve high photocatalytic and self-cleaning properties by the formation of reactive oxidation species. The samples are characterized for their microstructural, optical absorption and photoluminescence properties. It has been tested that rGZn nanocomposites are capable of removing a test dye, namely methylene blue (MB) from water and achieved the highest dye degradation efficiency of ∼91% within only 60 min under UV-vis light irradiation. A smart cotton fabric (CF) coated with rGZn has been prepared and demonstrated its photocatalytic self-cleaning property by degradation of MB, rhodamine B dyes and tea stains on it even under sunlight irradiation, which is scarcely available in the literature. Therefore, this work may open a new avenue of research for low cost and easy synthesis of rGO-semiconductor nanocomposites with high photocatalytic properties for industrial applications as well as for development of rGO based smart fabric for real-life applications.
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Affiliation(s)
- Partha Kumbhakar
- Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, West Bengal, India
| | - Ashim Pramanik
- Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, West Bengal, India
| | - Subrata Biswas
- Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, West Bengal, India
| | - Arup Kanti Kole
- Department of Physics, Durgapur Women's College, Durgapur, 713209, West Bengal, India
| | - Rajat Sarkar
- Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, West Bengal, India
| | - Pathik Kumbhakar
- Nanoscience Laboratory, Department of Physics, National Institute of Technology, Durgapur, 713209, West Bengal, India.
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22
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Liu L, Wang Z. Facile synthesis of a novel magnesium amino-tris-(methylenephosphonate)-reduced graphene oxide hybrid and its high performance in mechanical strength, thermal stability, smoke suppression and flame retardancy in phenolic foam. JOURNAL OF HAZARDOUS MATERIALS 2018; 357:89-99. [PMID: 29864692 DOI: 10.1016/j.jhazmat.2018.05.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 05/08/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
This study presents a one-step synthesis of a magnesium amino-tris-(methylenephosphonate) (Mg-AMP)-reduced graphene oxide (Mg-rGO) hybrid involving graphene oxide (GO) reduction and growth in situ of Mg-AMP nanoparticles in the absence of a reducing agent. Mg-rGO was characterized by X-ray diffraction, X-ray photoelectron and Fourier-transform infrared spectroscopies, transmission electronic microscopy, and thermogravimetric analysis (TGA). Mg-rGO was then used to prepare flame-retardant and toughened phenolic (PF) foam. This additive was found to enhance the compressive and flexural strengths of PF foam as well as to reduce its high friability and brittleness. The limiting oxygen index of the foam with 4 phr Mg-rGO (sample PF/4Mg-rGO) increased to 41.5%, compared with the 38% of untreated foam; the peak heat release rate and total heat release of sample PF/4Mg-rGO were decreased by 28.7 and 18.4%, respectively. Also, the total smoke release and peak CO production rate of PF/4Mg-rGO were reduced by 52.5 and 38.1%, respectively. TGA results indicated that Mg-rGO clearly improved the thermal stability of PF foam.
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Affiliation(s)
- Lei Liu
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Zhengzhou Wang
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China; Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai, 201804, PR China.
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23
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Nil L, Tiwari A, Shukla A, Tiwari D, Lee SM. Nanocomposite Au NP/TiO 2 thin film in the efficient remediation of aqueous solutions contaminated with emerging micro-pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:20125-20140. [PMID: 29748801 DOI: 10.1007/s11356-018-2215-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/01/2018] [Indexed: 06/08/2023]
Abstract
The present communication specifically aims to synthesize novel nanocomposite material Au NPs/TiO2 in a simple template process using the polyethylene glycol as filler media. The thin film of the nanocomposite material was characterized by the advanced analytical tools. The surface morphology was obtained by the scanning electron microscopic (SEM) and transmission electron microscopic (TEM) images of solids. Similarly, the surface topography and roughness of solid were obtained by the atomic force microscopic (AFM) image of thin film. X-ray diffraction (XRD) data enabled to confirm that the TiO2 was predominantly present with its anatase phase. The specific surface area and pore size of the solid were obtained using the N2 adsorption/desorption data. Nanocomposite Au NP/TiO2 thin film was employed in the photocatalytic removal of sulfamethoxazole and triclosan from aqueous solutions using less harmful UV-A light (λmax = 330 nm). Various physicochemical parametric studies enabled to deduce the mechanism involved in the degradation process. The degradation kinetics as a function of pH (pH 4.0-10.0) and micro-pollutant concentrations (0.5-15.0 mg/L) was extensively studied. The mineralization of these pollutants was obtained using the non-purgeable organic carbon (NPOC) data. The stability of thin film was assessed by the repeated operations, and presence of several co-existing ions simulates the studies to real matrix treatment. Further, the presence of scavengers enabled to pin point the radical-induced degradation of sulfamethoxazole and triclosan from aqueous solutions.
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Affiliation(s)
- Lalliansanga Nil
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, 796004, India
| | - Alka Tiwari
- Department of Physics, National Institute of Technology, Aizawl, 796001, India
| | - Alok Shukla
- Department of Physics, National Institute of Technology, Aizawl, 796001, India
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, 796004, India.
| | - Seung Mok Lee
- Department of Health and Environment, Catholic Kwandong University, 24, Beomil-ro 579beon-gil, Gangneung, 210-701, South Korea
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24
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Prabavathi SL, Kumar PS, Saravanakumar K, Muthuraj V, Karuthapandian S. A novel sulphur decorated 1-D MoO3 nanorods: Facile synthesis and high performance for photocatalytic reduction of hexavalent chromium. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.02.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Yue P, Wei ZX, Wu XH, Zhang HD, Ye F. Synthesis, characterization and synergistic photocatalytic properties of yeast-assisted composite La 0.7Sr 0.3MnO 3/TiO 2. RSC Adv 2017. [DOI: 10.1039/c7ra04642a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A magnetic yeast-assisted composite Y-La0.7Sr0.3MnO3/TiO2with p–n heterojunction was prepared. And it shows an obvious synergistic photocatalytic effect on methyl orange (MO) wastewater under solar irradiation.
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Affiliation(s)
- Pan Yue
- School of Environmental and Safety Engineering
- North University of China
- Taiyuan
- PR China
| | - Zhi-Xian Wei
- School of Environmental and Safety Engineering
- North University of China
- Taiyuan
- PR China
| | - Xu-Hong Wu
- Department of Chemistry
- Science Institute
- North University of China
- Taiyuan
- P. R. China
| | - He-Dan Zhang
- School of Environmental and Safety Engineering
- North University of China
- Taiyuan
- PR China
| | - Fan Ye
- Department of Chemistry
- Science Institute
- North University of China
- Taiyuan
- P. R. China
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