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Rajan ST, Senthilnathan J, Arockiarajan A. Innovative enhancement of electron tunneling synergy in carbon-doped Ta 2O 5CuO photocatalyst with nematic liquid crystal for safe drinking water. WATER RESEARCH 2024; 255:121457. [PMID: 38555783 DOI: 10.1016/j.watres.2024.121457] [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: 02/02/2024] [Accepted: 03/11/2024] [Indexed: 04/02/2024]
Abstract
This study focuses on enhancing the photocatalytic properties of carbon-doped Ta2O5CuO (C-Ta2O5CuO) nanocomposites for drinking water purification. The nanocomposites were fabricated by depositing C-Ta2O5CuO onto Nematic Liquid Crystal Polaroid (NLCP) obtained from a discarded laptop monitor, employing the sputter deposition method. The X-ray diffraction (XRD) and High-resolution transmission electron microscopy (HRTEM) determined the nanocomposite thin films' crystallinity and structural properties. The EDX and XPS analyses confirmed the elemental composition and reality of the Cu-incorporated Ta2O5 nanocomposites, respectively. The combination of electron tunneling enhancement provided by the NLCP and graphitic carbon led to exceptional photocatalytic performance. This was particularly evident in the efficient degradation of P-Rosaniline Hydrochloride (PRH) dye in an aqueous medium. C-Ta2O5CuO catalytic activities were estimated at various dye concentrations, repeatability, reusability with time, and kinetics. Coating's stability and long-term activity in photocatalysis reactions were also tested. Additionally, Cu present in the C-Ta2O5CuO and ˙OH radicals exhibited remarkable bactericidal activity. They displayed significant antibacterial efficacy against both gram-positive Escherichia coli (E. coli) and gram-negative Staphylococcus aureus (S. aureus) bacteria. These findings have significant implications for the development of advanced materials with potent photocatalytic and antibacterial properties, holding promise for improving drinking water quality and addressing environmental and health challenges.
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Affiliation(s)
- S Thanka Rajan
- Department of Materials Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - J Senthilnathan
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - A Arockiarajan
- Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600 036, India; Ceramic Technology Group- Center of Excellence in Materials and Manufacturing Futuristic Mobility, Indian Institute of Technology Madras, Chennai 600 036, India.
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2
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Rezaei M, Nezamzadeh-Ejhieh A, Massah AR. A comprehensive review on the boosted effects of anion vacancy in the heterogeneous photocatalytic degradation, part I: Focus on sulfur, nitrogen, carbon, and halogen vacancies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115927. [PMID: 38181561 DOI: 10.1016/j.ecoenv.2024.115927] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/07/2023] [Accepted: 01/01/2024] [Indexed: 01/07/2024]
Abstract
The greenest environmental remediation way is the photocatalytic degradation of organic pollutants. However, limited photocatalytic applications are due to poor sunlight absorption and photogenerated charge carriers' recombination. These limitations can be overcome by introducing anion vacancy (AV) (O, S, N, C, and Halogen) defects in semiconductors that enhance light harvesting, facilitate charge separation, modulate electronic structure, and produce reactive radicals. In continuing part A of this review, in this part, we summarized the recent AVs' research, including S, N, C, and halogen vacancies on the boosted photocatalytic features of semiconductor materials, like metal oxides/sulfides, oxyhalides, and nitrides in detail. Also, we outline the recently developed AV designs for the photocatalytic degradation of organic pollutants. The AV creating and analysis methods and the recent photocatalytic applications and mechanisms of AV-mediated photocatalysts are reviewed. AV engineering photocatalysts' challenges and development prospects are illustrated to get a promising research direction.
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Affiliation(s)
- Mahdieh Rezaei
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Department of Chemistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
| | - Ahmad Reza Massah
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Department of Chemistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
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3
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Fiaz M, Sohail M, Nafady A, Will G, Wahab MA. A facile two-step hydrothermal preparation of 2D/2D heterostructure of Bi 2WO 6/WS 2 for the efficient photodegradation of methylene blue under sunlight. ENVIRONMENTAL RESEARCH 2023; 234:116550. [PMID: 37437862 DOI: 10.1016/j.envres.2023.116550] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/26/2023] [Accepted: 07/02/2023] [Indexed: 07/14/2023]
Abstract
A facile two-step hydrothermal method was successfully used to prepare a photocatalyst Bi2WO6/WS2 heterojunction for methyl blue (MB) photodegradation. Fabricated photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS). Band gap measurements were carried out by diffuse reflectance spectroscopy (DRS). Results indicated that the prepared heterostructure photocatalyst has increased visible light absorption. Photocatalytic performance was evaluated under sunlight irradiation for methylene blue (MB) degradation as a model dye. Variations in pH (4-10), amount of catalyst (0.025-0.1 g/L), and initial MB concentrations (5-20 ppm) were carried out, whereas all prepared catalysts were used to conduct the tests with a visible spectrophotometer. Degradation activity improved with the pH increase; the optimum pH was approximately 8. Catalyst concentration is directly related to degradation efficiency and reached 93.56% with 0.075 g of the catalyst. Among tested catalysts, 0.01 Bi2WO6/WS2 has exhibited the highest activity and a degradation efficiency of 99.0% in 40 min (min) for MB. MB photodegradation follows pseudo-first-order kinetics, and obtained values of kapp were 0.0482 min-1, 0.0337 min-1, 0.0205 min-1, and 0.0087 min-1 for initial concentrations of 5 ppm, 10 ppm, 15 ppm, and 20 ppm, respectively. The catalyst was reused for six cycles with a negligible decrease in the degradation activity. Heterostructure 0.01 Bi2WO6/WS2 has exhibited a photocurrent density of 16 μA cm-2, significantly higher than 2.0 and 4.5 μA cm-2 for the pristine WS2 and Bi2WO6, respectively. The findings from these investigations may serve as a crucial stepping stone towards the remediation of polluted water facilitated by implementing such highly efficient photocatalysts.
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Affiliation(s)
- Muhammad Fiaz
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Manzar Sohail
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan.
| | - Ayman Nafady
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Geoffrey Will
- Energy and Process Engineering Laboratory, School of Mechanical, Medical and Process Engineering, Faculty of Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Md A Wahab
- Energy and Process Engineering Laboratory, School of Mechanical, Medical and Process Engineering, Faculty of Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.
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Rahaman M, Ahmed MH, Sadman SM, Islam MR. Defect mediated visible light induced photocatalytic activity of Co 3O 4 nanoparticle decorated MoS 2 nanoflower: A combined experimental and theoretical study. Heliyon 2023; 9:e14536. [PMID: 36950618 PMCID: PMC10025921 DOI: 10.1016/j.heliyon.2023.e14536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
In this work, Co3O4 nanoparticle-decorated MoS2 (MoS2@Co3O4) hetero-nanoflowers were synthesized by a facile hydrothermal method, and the effect of Co3O4 on the morphological, structural, optical, electronic, and photocatalytic properties of MoS2 was analyzed. The surface morphology of MoS2 and MoS2@Co3O4 was studied via field emission electron microscopy (FE-SEM) and transmission electron microscopy (TEM), which revealed a strong interaction between the MoS2 nanoflower and the nanoparticles. The X-ray diffraction pattern showed a decrease in the crystallite sizes from 7.35 nm to 6.26 nm due to the incorporation of Co3O4. The UV-Vis spectroscopy of the analysis revealed that the indirect band gap of MoS2 was reduced from 1.89 eV to 1.65 eV with the incorporation of Co3O4 nanoparticles. Density functional theory (DFT) calculations were used to investigate the electronic properties of MoS2 and MoS2@Co3O4 hetero-nanoflowers, which also showed a reduction in the electronic band gap for the Co3O4 nanoparticles that were injected. The presence of defect states was also observed in the electronic property of MoS2@Co3O4. The photocatalytic activity of the prepared composite and nanoflower is studied using an aqueous solution of methylene blue (MB), and the efficiencies are found to be 27.96% for MoS2 and 78.89% for MoS2@Co3O4. The improved photocatalytic efficiency of MoS2@Co3O4 hetero-nanoflower can be attributed to narrowing the band gap together with the creation of defect states by the injection of nanoparticles that slows down electron-hole recombination rate by trapping charge carrier. The degradation analysis of the composite provides a new route for the purification of polluted water.
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Affiliation(s)
- Mizanur Rahaman
- Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
| | - Md Hasive Ahmed
- Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
| | | | - Muhammad Rakibul Islam
- Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
- Corresponding author.
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Construction of a novel ZnO/rGO hybrid composite for efficient degradation of CV, Cr (VI) and 2, 4-D under visible light irradiation. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Din MI, Khalid R, Hussain Z, Arshad M, Khan SA. A critical review on application of organic, inorganic and hybrid nanophotocatalytic assemblies for photocatalysis of methyl orange dye in aqueous medium. REV CHEM ENG 2022. [DOI: 10.1515/revce-2022-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Abstract
Methyl orange (MO) is a highly carcinogenic and harmful contaminant, which has been extensively reported for its detrimental impact on human and aquatic life. The photodegradation of MO into less toxic products has gained much attention over the past few decades. Herein we have reviewed the recent advancement in designing of nanomaterials (NMs) stabilized on different fabricating assemblies and their application in photocatalysis of MO dye. These photocatalytic systems possess various advantages and disadvantages. Graphene-based supported materials on different NMs are highly reported photocatalysts for photocatalysis of MO dye. Recent advancement, parameters affecting photocatalytic studies, kinetics and photocatalytic mechanism of MO have been thoroughly explained in this review. Future outcomes are also provided for extending the development of scientific research in this field.
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Affiliation(s)
| | - Rida Khalid
- School of Chemistry , University of Punjab , Lahore , 54590 , Pakistan
| | - Zaib Hussain
- School of Chemistry , University of Punjab , Lahore , 54590 , Pakistan
| | - Muhammad Arshad
- Institute of Chemistry , The Islamia University of Bahawalpur, Baghdad-ul-Jadeed Campus , Bahawalpur , 63100 , Pakistan
| | - Safyan A. Khan
- Center of Research Excellence in Nanotechnology , King Fahd University of Petroleum & Minerals , Dhahran , 31261 , Saudi Arabia
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7
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Długosz O, Staroń A, Brzoza P, Banach M. Synergistic effect of sorption and photocatalysis on the degree of dye removal in single and multicomponent systems on ZnO-SnO 2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:27042-27050. [PMID: 34932182 PMCID: PMC8989939 DOI: 10.1007/s11356-021-18044-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 12/07/2021] [Indexed: 05/27/2023]
Abstract
The paper presents the photodegradation process of one-, two- and three-component dye mixtures by ZnO-SnO2 nanoparticles. After 60 min of running the processes, the dye removal efficiencies of 76.44, 72.69, 62.43, 77.00 and 92.46% for MB, RB, TB, MO and YQ degradation, respectively, were obtained. For binary and ternary systems, dye removal efficiencies for all cases exceeded 70%. When the binary and ternary dye mixtures were tested, the photodegradation efficiencies of ZnO-SnO2 were similar to those of the single mixtures, indicating that this material could be used in industrial applications in the future. The focus of the study was to investigate the effect of sorption on photodegradation efficiency and the presence of both cationic and anionic dyes on their degradation efficiency under UV light. The significance of the effect of sorption on the degradation efficiency allowing the interaction of the catalyst with the dyes removed was confirmed. The main factor influencing sorption and consequently photocatalysis was the nature of the dye. It was confirmed that the positively charged ZnO-SnO2 surface effectively sorbs the dyes and causes their degradation.
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Affiliation(s)
- Olga Długosz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska St. 24, 31-155, Cracow, Poland.
| | - Anita Staroń
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska St. 24, 31-155, Cracow, Poland
| | - Paulina Brzoza
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska St. 24, 31-155, Cracow, Poland
| | - Marcin Banach
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska St. 24, 31-155, Cracow, Poland
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8
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Kitchen Waste Derived Porous Nanocarbon Spheres for Metal Free Degradation of Azo Dyes: An Environmental Friendly, Cost Effective Method. J CLUST SCI 2022. [DOI: 10.1007/s10876-021-02208-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Okla MK, Subhiksha V, Akshhayya C, Al-amri SS, Alaraidh IA, Al-ghamdi AA, Soufan W, Abdel-Maksoud MA, Aufy M, Studenik CR, Khan SS. In situ construction of ZnFe 2O 4 nanospheres on CoO nanosheets for durable photodegradation of organics: kinetics and mechanistic insights. NEW J CHEM 2022. [DOI: 10.1039/d2nj02272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a low-cost, efficient and sustainable technology is considered to be of paramount for the efficient degradation of toxic pollutants.
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Affiliation(s)
- Mohammad K. Okla
- Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - V. Subhiksha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamil Nadu, India
| | - C. Akshhayya
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamil Nadu, India
| | - Saud S. Al-amri
- Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ibrahim A. Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdullah A. Al-ghamdi
- Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Walid Soufan
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, PO Box 2460, Riyadh, 11451, Saudi Arabia
| | - Mostafa A. Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mohammed Aufy
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, A-1090, Wien, Austria
| | - Christian R. Studenik
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, A-1090, Wien, Austria
| | - S. Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, Tamil Nadu, India
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10
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Sorekine G, Anduwan G, Waimbo MN, Osora H, Velusamy S, Kim S, Kim YS, Charles J. Photocatalytic studies of copper oxide nanostructures for the degradation of methylene blue under visible light. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131487] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Prakash J, Venkataprasanna KS, Venkatasubbu GD. Investigation on visible light-driven antimicrobial and mechanistic activity of GO/TiO 2(V–N) nanocomposite against wound pathogens. NEW J CHEM 2022. [DOI: 10.1039/d2nj01634f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
GO/TiO2(V–N) is fabricated as a visible light driven efficient antimicrobial material. In the presence of light, GO/TiO2(V–N) was employed as a photocatalytic active material against wound pathogens.
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Affiliation(s)
- J. Prakash
- Department of Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu District, 603 203, Tamil Nadu, India
| | | | - G. Devanand Venkatasubbu
- Department of Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu District, 603 203, Tamil Nadu, India
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Garg R, Gupta R, Singh N, Bansal A. Eliminating pesticide quinalphos from surface waters using synthesized GO-ZnO nanoflowers: Characterization, degradation pathways and kinetic study. CHEMOSPHERE 2022; 286:131837. [PMID: 34399266 DOI: 10.1016/j.chemosphere.2021.131837] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/06/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
The presence of highly toxic and persistent pesticides in water bodies causes serious problems to human beings as well as aquatic life. Quinalphos is one such widely used organophosphorus pesticide in agricultural fields. Herein, for degradation and mineralization of quinalphos, ZnO nanoflowers and their hybrid nanocomposite with graphene oxide have been synthesized. FESEM analysis confirmed the formation of ZnO nanoflowers over nanosheets of graphene oxide having a thickness of 20 ± 10 nm. GO-ZnO composite exhibited remarkable photocatalytic activity in comparison to pure ZnO. 98 % degradation of quinalphos was achieved using GO-ZnO nano-catalyst at 6 pH within 45 min of irradiations, whereas it was 80 % for bare ZnO nanoflowers. Higher degradation with hybrid nanocomposite was attributed to improved surface area (36 m2 g-1), a substantial reduction in bandgap energy from 3.10 to 2.90 eV and enhanced charge separation (e-/h+ pairs) after the addition of GO. Reaction kinetics study followed pseudo-first-order behaviour. Further, mineralization to the extent of 90 % in 90 min was confirmed by TOC analysis. Based on identified intermediates, using LCMS analysis, degradation pathways were proposed. The plausible pathways confirmed the presence of smaller and safer reaction intermediates supported by excitation of e- from nanocomposite followed by oxidation of quinalphos with huge free radicals. Overall, this study is significant in terms of using photocatalysis as a tertiary treatment of quinalphos pesticide wastewater at pH 6 in a short duration.
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Affiliation(s)
- Renuka Garg
- Department of Chemical Engineering, Dr. B R Ambedkar National Institute of Technology, Jalandhar, Punjab, 144011, India
| | - Renu Gupta
- Department of Chemical Engineering, Dr. B R Ambedkar National Institute of Technology, Jalandhar, Punjab, 144011, India
| | - Nirmal Singh
- Department of Chemistry, R.S.D. College, Ferozepur, Punjab, 152002, India
| | - Ajay Bansal
- Department of Chemical Engineering, Dr. B R Ambedkar National Institute of Technology, Jalandhar, Punjab, 144011, India.
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13
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Asadzadeh Patehkhor H, Fattahi M, Khosravi-Nikou M. Synthesis and characterization of ternary chitosan-TiO 2-ZnO over graphene for photocatalytic degradation of tetracycline from pharmaceutical wastewater. Sci Rep 2021; 11:24177. [PMID: 34921173 PMCID: PMC8683447 DOI: 10.1038/s41598-021-03492-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 11/26/2021] [Indexed: 11/20/2022] Open
Abstract
Various nanocomposites of TiO2-ZnO, TiO2-ZnO/CS, and TiO2-ZnO/CS-Gr with different molar ratios were synthesized by sol-gel and ultrasound-assisted methods and utilized under UV irradiation to enhance the photocatalytic degradation of tetracycline. Characterization of prepared materials were carried out by XRD, FT-IR, FE-SEM, EDX and BET techniques. The TiO2-ZnO with the 1:1 molar ratio supported with 1:2 weight ratio CS-Gr (T1‒Z1/CS1‒Gr2 sample) appeared as the most effective material at the optimized operational conditions including the tetracycline concentration of 20 mg/L, pH = 4, catalyst dosage of 0.5 g/L, and 3 h of irradiation time. As expected, the graphene had a significant effect in improving degradation results. The detailed performances of the T1‒Z1/CS1‒Gr2 were compared with ternary nanocomposites from EDX and BET results as well as from the degradation viewpoint. This novel photocatalyst can be effective in actual pharmaceutical wastewater treatment considering the applied operational parameters.
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Affiliation(s)
- Hossein Asadzadeh Patehkhor
- grid.444962.90000 0004 0612 3650Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
| | - Moslem Fattahi
- Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran.
| | - Mohammadreza Khosravi-Nikou
- grid.444962.90000 0004 0612 3650Department of Gas Engineering, Ahvaz Faculty of Petroleum, Petroleum University of Technology, Ahvaz, Iran
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14
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Garg R, Gupta R, Singh N, Bansal A. Characterization and performance evaluation of synthesized ZnO nanoflowers, nanorods, and their hybrid nanocomposites with graphene oxide for degradation of Orange G. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:57009-57029. [PMID: 34080119 DOI: 10.1007/s11356-021-14511-3] [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: 03/02/2021] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Nanoflowers and nanorods of ZnO were synthesized via hydrothermal route. These morphologies of zinc oxide (ZnO) were then decorated over graphene oxide (GO) to yield hybrid nanocomposites, namely, GO-ZnOnR and GO-ZnOnF. The decoration of ZnO nanorods and nanoflowers on GO layers was confirmed through FESEM images. The synthesized nanocomposites were subjected to degrade the Orange G under identical conditions. The band gap energies determined using diffused reflectance spectra were 2.87, 2.89 eV for GO-ZnOnR, and GO-ZnOnF, whereas, for both ZnOnR and ZnOnF, it was 3.14 eV. For 50 min of UV irradiations (at 6 pH), 100% degradation was achieved corresponding to GO-ZnOnR (44.1 m2 g-1) followed by 90.1%, 70.2%, and 68.3% with GO-ZnOnF (35.9 m2 g-1), ZnOnR (20 m2 g-1), and ZnOnF (15.1 m2 g-1), respectively. Significant boost in the degradation of Orange G, with GO-ZnOnR, was attributed to its reduced band gap, higher surface area, and enhanced charge separation. Kinetic study confirms the pseudo-first-order reaction rate. Mineralization efficiency of 91% in 120 min indicated the efficient reduction of Orange G and its intermediates. Further, reactive species trapping experiments revealed that photo-induced •OH are dominant radicals for the degradation followed by •O2- and h+. Liquid chromatography mass spectra data has been used to predict the plausible reaction pathways. Reusability studies indicated that GO-ZnOnR can be used for four successive degradation cycles, without any significant activity loss.
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Affiliation(s)
- Renuka Garg
- Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar, 144011, Punjab, India
| | - Renu Gupta
- Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar, 144011, Punjab, India
| | - Nirmal Singh
- Post Graduate Department of Chemistry, RSD College, Ferozepur, 152002, Punjab, India
| | - Ajay Bansal
- Department of Chemical Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar, 144011, Punjab, India.
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15
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Jamjoum HAA, Umar K, Adnan R, Razali MR, Mohamad Ibrahim MN. Synthesis, Characterization, and Photocatalytic Activities of Graphene Oxide/metal Oxides Nanocomposites: A Review. Front Chem 2021; 9:752276. [PMID: 34621725 PMCID: PMC8490810 DOI: 10.3389/fchem.2021.752276] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/09/2021] [Indexed: 12/28/2022] Open
Abstract
Sustainable water processing techniques have been extensively investigated and are capable of improving water quality. Among the techniques, photocatalytic technology has shown great potential in recent years as a low cost, environmentally friendly and sustainable technology. However, the major challenge in the industrial development of photocatalyst technology is to develop an ideal photocatalyst which must have high photocatalytic activity, a large specific surface area, harvest sunlight and shows recyclability. Keeping these views, the present review highlighted the synthesis approaches of graphene/metal oxide nanocomposite, characterization techniques and their prominent applications in photocatalysis. Various parameters such as photocatalyst loading, structure of photocatalyst, temperature, pH, effect of oxidizing species and wavelength of light were addressed which could affect the rate of degradation. Moreover, the formation of intermediates during photo-oxidation of organic pollutants using these photocatalysts is also discussed. The analysis concluded with a synopsis of the importance of graphene-based materials in pollutant removal. Finally, a brief overview of the problems and future approaches in the field is also presented.
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Affiliation(s)
- Hayfa Alajilani Abraheem Jamjoum
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
- Department of Chemistry, Faculty of Science, University of Sabratha, Sabratha, Libya
| | - Khalid Umar
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Mohd. R. Razali
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
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Gilani NS, Tilami SE, Azizi SN. One‐step green synthesis of nano‐sodalite zeolite and its performance for the adsorptive removal of crystal violet. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Neda Salek Gilani
- Analytical Division, Faculty of Chemistry University of Mazandaran Babolsar Iran
| | | | - Seyed Naser Azizi
- Analytical Division, Faculty of Chemistry University of Mazandaran Babolsar Iran
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Kite S, Kadam AN, Sathe DJ, Patil S, Mali SS, Hong CK, Lee S, Garadkar KM. Nanostructured TiO 2 Sensitized with MoS 2 Nanoflowers for Enhanced Photodegradation Efficiency toward Methyl Orange. ACS OMEGA 2021; 6:17071-17085. [PMID: 34250364 PMCID: PMC8264933 DOI: 10.1021/acsomega.1c02194] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/15/2021] [Indexed: 05/27/2023]
Abstract
Nanostructured titanium dioxide (TiO2) has a potential platform for the removal of organic contaminants, but it has some limitations. To overcome these limitations, we devised a promising strategy in the present work, the heterostructures of TiO2 sensitized by molybdenum disulfide (MoS2) nanoflowers synthesized by the mechanochemical route and utilized as an efficient photocatalyst for methyl orange (MO) degradation. The surface of TiO2 sensitized by MoS2 was comprehensively characterized by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), photoluminescence spectroscopy (PL), Brunauer-Emmett-Teller (BET) surface area, and thermogravimetric analysis (TGA). From XRD results, the optimized MoS2-TiO2 (5.0 wt %) nanocomposite showcases the lowest crystallite size of 14.79 nm than pristine TiO2 (20 nm). The FT-IR and XPS analyses of the MoS2-TiO2 nanocomposite exhibit the strong interaction between MoS2 and TiO2. The photocatalytic results show that sensitization of TiO2 by MoS2 drastically enhanced the photocatalytic activity of pristine TiO2. According to the obtained results, the optimal amount of MoS2 loading was assumed to be 5.0 wt %, which exhibited a 21% increment of MO photodegradation efficiency compared to pristine TiO2 under UV-vis light. The outline of the overall study describes the superior photocatalytic performance of 5.0 wt % MoS2-TiO2 nanocomposite which is ascribed to the delayed recombination by efficient charge transfer, high surface area, and elevated surface oxygen vacancies. The context of the obtained results designates that the sensitization of TiO2 with MoS2 is a very efficient nanomaterial for photocatalytic applications.
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Affiliation(s)
- Sagar
V. Kite
- Nanomaterials
Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Abhijit Nanaso Kadam
- Department
of Chemical and Biological Engineering, Gachon University, Seongnamdaero, Seongnam-si 1342, Republic
of Korea
| | - Dattatraya J. Sathe
- Department
of Chemistry, KIT’s College of Engineering
(Autonomous), Kolhapur, Maharashtra 416234, India
| | - Satish Patil
- Nanomaterials
Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Sawanta S. Mali
- Polymer
Energy Materials Laboratory, School of Advanced Chemical Engineering, Chonnam National University, Gwangju 61186, South Korea
| | - Chang Kook Hong
- Polymer
Energy Materials Laboratory, School of Advanced Chemical Engineering, Chonnam National University, Gwangju 61186, South Korea
| | - Sang−Wha Lee
- Department
of Chemical and Biological Engineering, Gachon University, Seongnamdaero, Seongnam-si 1342, Republic
of Korea
| | - Kalyanrao M. Garadkar
- Nanomaterials
Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
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18
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Garg R, Gupta R, Bansal A. Degradation mechanism, reaction pathways and kinetics for the mineralization of Bisphenol A using hybrid ZnO/graphene oxide nano-catalysts. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-020-0718-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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19
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Arabpour A, Dan S, Hashemipour H. Preparation and optimization of novel graphene oxide and adsorption isotherm study of methylene blue. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103003] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Guo M, Hu Y, Wang R, Yu H, Sun L. Molecularly imprinted polymer-based photocatalyst for highly selective degradation of methylene blue. ENVIRONMENTAL RESEARCH 2021; 194:110684. [PMID: 33417912 DOI: 10.1016/j.envres.2020.110684] [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: 08/19/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
ZnO quantum dots were synthesized by chemical precipitation, CuFe2O4 nanoparticles were prepared by in situ synthesis of cellulose, and then ZnO/CuFe2O4 (ZCF) composites were fabricated. A photocatalyst (ZCF@MB-MIP) with specific molecule recognition and photocatalytic degradation characteristics was then produced by a surface imprinting method using methylene blue (MB) as the template molecule. The structure of ZCF@MB-MIP was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray diffraction. The photocatalytic efficiency of ZCF@MB-MIP and its specific recognition performance in MB degradation was analyzed. The adsorption kinetics of MB by ZCF@MB-MIP conformed to the quasi-secondary adsorption kinetics model. ZCF@MB-MIP displayed effective photocatalytic degradation of MB under natural light. The degradation rate reached 95.8%, which was much higher than those of ZCF, CuFe2O4 nanoparticles, and a non-imprinted reference sample under the same conditions. This work is a useful reference for the construction of photocatalysts that show highly selective recognition of dye molecules.
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Affiliation(s)
- Ming Guo
- College of Science, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China; College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China.
| | - Yinglu Hu
- College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Rui Wang
- College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Hongwei Yu
- College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
| | - Liping Sun
- College of Environment and Resources Sciences, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China
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21
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Multi-walled carbon nanotube coupled β-Cyclodextrin/PANI hybrid photocatalyst for advance oxidative degradation of crystal violet. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114216] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Boukhoubza I, Khenfouch M, Achehboune M, Leontie L, Galca AC, Enculescu M, Carlescu A, Guerboub M, Mothudi BM, Jorio A, Zorkani I. Graphene Oxide Concentration Effect on the Optoelectronic Properties of ZnO/GO Nanocomposites. NANOMATERIALS 2020; 10:nano10081532. [PMID: 32764216 PMCID: PMC7466397 DOI: 10.3390/nano10081532] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 11/18/2022]
Abstract
In this work, the effects of graphene oxide (GO) concentrations (1.5 wt.%, 2.5 wt.%, and 5 wt.%) on the structural, morphological, optical, and luminescence properties of zinc oxide nanorods (ZnO NRs)/GO nanocomposites, synthesized by a facile hydrothermal process, were investigated. X-ray diffraction (XRD) patterns of NRs revealed the hexagonal wurtzite structure for all composites with an average coherence length of about 40–60 nm. A scanning electron microscopy (SEM) study confirmed the presence of transparent and wrinkled, dense GO nanosheets among flower-like ZnO nanorods, depending on the GO amounts used in preparation. Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible (UV–Vis) absorption spectroscopy, and photoluminescence (PL) measurements revealed the impact of GO concentration on the optical and luminescence properties of ZnO NRs/GO nanocomposites. The energy band gap of the ZnO nanorods was independent of GO concentration. Photoluminescence spectra of nanocomposites showed a significant decrease in the intensities in the visible light range and red shifted suggesting a charge transfer process. The nanocomposites’ chromaticity coordinates for CIE 1931 color space were estimated to be (0.33, 0.34), close to pure white ones. The obtained results highlight the possibility of using these nanocomposites to achieve good performance and suitability for optoelectronic applications.
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Affiliation(s)
- Issam Boukhoubza
- Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Atlas Fez 30 000, Morocco; (I.B.); (M.A.); (M.G.); (A.J.); (I.Z.)
- Africa Graphene Center, Department of Physics, College of Science, Engineering and Technology, Science Campus, University of South Africa, Cnr Christiaan de Wet & Pioneer Avenue, Florida 1709, Johannesburg, South Africa;
| | - Mohammed Khenfouch
- Africa Graphene Center, Department of Physics, College of Science, Engineering and Technology, Science Campus, University of South Africa, Cnr Christiaan de Wet & Pioneer Avenue, Florida 1709, Johannesburg, South Africa;
| | - Mohamed Achehboune
- Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Atlas Fez 30 000, Morocco; (I.B.); (M.A.); (M.G.); (A.J.); (I.Z.)
- Africa Graphene Center, Department of Physics, College of Science, Engineering and Technology, Science Campus, University of South Africa, Cnr Christiaan de Wet & Pioneer Avenue, Florida 1709, Johannesburg, South Africa;
| | - Liviu Leontie
- Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Bulevardul Carol I, nr. 11, 700506 Iasi, Romania;
| | - Aurelian Catalin Galca
- Laboratory of Multifunctional Materials and Structures, National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania;
| | - Monica Enculescu
- Laboratory of Multifunctional Materials and Structures, National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania;
- Correspondence:
| | - Aurelian Carlescu
- Integrated Center for Studies in Environmental Science for North-East Region, Alexandru Ioan Cuza University of Iasi, Bulevardul Carol I, nr. 11, 700506 Iasi, Romania;
| | - Mohammed Guerboub
- Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Atlas Fez 30 000, Morocco; (I.B.); (M.A.); (M.G.); (A.J.); (I.Z.)
| | - Bakang Moses Mothudi
- Department of Physics, University of South Africa, Private Bag X90, Florida 1710, South Africa;
| | - Anouar Jorio
- Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Atlas Fez 30 000, Morocco; (I.B.); (M.A.); (M.G.); (A.J.); (I.Z.)
| | - Izeddine Zorkani
- Group of Nanomaterials and Renewable Energies, Laboratory of Solid State Physics, Faculty of Sciences Dhar el Mahraz, Sidi Mohammed Ben Abdellah University, P.O. Box 1796, Atlas Fez 30 000, Morocco; (I.B.); (M.A.); (M.G.); (A.J.); (I.Z.)
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Iqbal M, Thebo AA, Jatoi WB, Tabassum MT, Rehman MU, Thebo KH, Mohsin MA, Ullah S, Jatoi AH, Shah I. Facile synthesis of Cr doped hierarchical ZnO nano-structures for enhanced photovoltaic performance. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107902] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Saber O, Asiri SM, Ezzeldin MF, El-Azab WIM, Abu-Abdeen M. Designing Dual-Effect Nanohybrids for Removing Heavy Metals and Different Kinds of Anions from the Natural Water. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2524. [PMID: 32492940 PMCID: PMC7321423 DOI: 10.3390/ma13112524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 11/20/2022]
Abstract
In the present study, well-designed nanohybrids are used to act as effective dual-function adsorbents for removing both anions and heavy metals from natural water, at the same time. In this trend, Zn-Al LDHs and graphene oxide are applied to build up building blocks to produce a series of nanohybrids. These nanohybrids were characterized by X-ray diffraction, thermal analyses, Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning and transmission electron microscopy. These techniques confirmed that the prepared nanohybrids contained nanolayered structures with three-dimensional porous systems. These porous systems were identified by the nitrogen adsorption-desorption isotherms and water purification experiments. The obtained results indicated that these nanohybrids included suitable structures to act as dual function materials. The first function was achieved by removing more than 80% of both cadmium and lead from the natural water. The second function was accomplished by eliminating of 100% of hydrogen phosphate and bromide anions alongside with 80%-91% of sulfate, chloride, and fluoride anions. To conclude, these well-designed nanohybrids convert two-dimensional nanolayered structures to three-dimensional porous networks to work as dual-function materials for removing of heavy metals and different kinds of anions naturally found in the fresh tap water sample with no parameters optimization.
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Affiliation(s)
- Osama Saber
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Sarah Mousa Asiri
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Mohamed Farouk Ezzeldin
- Department of Environmental Health, Collage of Public Health, Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Waleed I. M. El-Azab
- Egyptian Petroleum Research Institute, Nasr City, P.O. Box 11727, Cairo 11765, Egypt;
| | - Mohammed Abu-Abdeen
- Physics Department, Faculty of Science, Cairo University, Giza 12613, Egypt;
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Yaqoob AA, Mohd Noor NHB, Serrà A, Mohamad Ibrahim MN. Advances and Challenges in Developing Efficient Graphene Oxide-Based ZnO Photocatalysts for Dye Photo-Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E932. [PMID: 32408530 PMCID: PMC7279554 DOI: 10.3390/nano10050932] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
The efficient remediation of organic dyes from wastewater is increasingly valuable in water treatment technology, largely owing to the tons of hazardous chemicals currently and constantly released into rivers and seas from various industries, including the paper, pharmaceutical, textile, and dye production industries. Using solar energy as an inexhaustible source, photocatalysis ranks among the most promising wastewater treatment techniques for eliminating persistent organic pollutants and new emerging contaminants. In that context, developing efficient photocatalysts using sunlight irradiation and effectively integrating them into reactors, however, pose major challenges in the technologically relevant application of photocatalysts. As a potential solution, graphene oxide (GO)-based zinc oxide (ZnO) nanocomposites may be used together with different components (i.e., ZnO and GO-based materials) to overcome the drawbacks of ZnO photocatalysts. Indeed, mounting evidence suggests that using GO-based ZnO nanocomposites can promote light absorption, charge separation, charge transportation, and photo-oxidation of dyes. Despite such advances, viable, low-cost GO-based ZnO nanocomposite photocatalysts with sufficient efficiency, stability, and photostability remain to be developed, especially ones that can be integrated into photocatalytic reactors. This article offers a concise overview of state-of-the-art GO-based ZnO nanocomposites and the principal challenges in developing them.
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Affiliation(s)
- Asim Ali Yaqoob
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; (A.A.Y.); (N.H.b.M.N.)
| | | | - Albert Serrà
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Mechanics of Materials and Nanostructures, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland
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Designing Dual-Function Nanostructures for Water Purification in Sunlight. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10051786] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The current study aims at combining two building blocks together into well-designed nanostructures to act as dual-function materials; active photocatalysts in sunlight and effective adsorbents for increasing the efficiency of water purification. By these nanostructures, we could avoid the drawbacks of the existing technologies for water purification and remove the industrial pollutants by a dual process; adsorption and photocatalytic degradation. In this trend, Zn-Al layered double hydroxides (LDHs) are combined with graphene oxide to produce a series of nanolayered structures. These nanolayered structures are effective for converting Zn-Al LDHs to be photo-active in sunlight through decreasing its band gap energy from 5.5 eV to 2.5 eV. In addition, these nanolayered structures caused complete decolorization and mineralization of green dyes in sunlight through accelerating the reaction rate of the photocatalytic degradation of dyes seven times higher than that of the pure Zn-Al LDHs. In the same time, they improved the adsorption process of green dyes through creating new micro- and meso-porous structures and high surface area for Zn-Al LDHs. Finally, the well-designed nanostructures between Zn-Al LDHs and graphene oxide led to converting non-photoactive materials to be active in the visible light in addition to a complete and fast removal for organic pollutants.
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Waimbo M, Anduwan G, Renagi O, Badhula S, Michael K, Park J, Velusamy S, Kim YS. Improved charge separation through H 2O 2 assisted copper tungstate for enhanced photocatalytic efficiency for the degradation of organic dyes under simulated sun light. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 204:111781. [PMID: 31981989 DOI: 10.1016/j.jphotobiol.2020.111781] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/18/2019] [Accepted: 01/06/2020] [Indexed: 10/25/2022]
Abstract
In the recent years, copper tungstate (CuWO4) has been widely researched for its photocatalytic properties as it responds in the visible light range to augment the utilization of solar energy. In the present report, CuWO4 was synthesized through a facile and cost-effective solvothermal method, followed by annealing process at 700∘C. The structural, morphological, compositional and optical property of the synthesized powders were examined by X-ray diffraction, scanning electron microscope, UV-visible, Raman and photoluminescence studies. The photocatalytic activity of the nanostructured CuWO4 was evaluated by the degradation of methylene blue (MB) and methyl orange (MO) in aqueous solution under one sun light irradiation. The degradation efficiency of MB was found to be about 70% while that of MO was only 57% at 240 min in the same irradiation time. Surprisingly, the degradation process was accelerated by the addition of electron capturing agent H2O2 and thus MB dye was completely degraded within the time interval of 30 min while MO degraded in 75 min. These results prove that CuWO4 nanoparticles possess significant photocatalytic activity towards MO and MB dyes, thus indicating the feasibility of using CuWO4 for the active treatment of organic contaminants in the industrial effluents.
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Affiliation(s)
- Mathew Waimbo
- Department of Applied Physics, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea
| | - Gabriel Anduwan
- Department of Applied Physics, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea
| | - Ora Renagi
- Department of Applied Physics, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea
| | - Srikanth Badhula
- Department of Applied Sciences, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea
| | - Kenny Michael
- Department of Applied Physics, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea
| | - Jongwoo Park
- Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Senthilkumar Velusamy
- Department of Applied Physics, Papua New Guinea University of Technology, Lae, Morobe Province, Papua New Guinea.
| | - Yong Soo Kim
- Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 44610, Republic of Korea.
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Atchudan R, Edison TNJI, Mani S, Perumal S, Vinodh R, Thirunavukkarasu S, Lee YR. Facile synthesis of a novel nitrogen-doped carbon dot adorned zinc oxide composite for photodegradation of methylene blue. Dalton Trans 2020; 49:17725-17736. [DOI: 10.1039/d0dt02756a] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nitrogen-doped carbon dot decorated zinc oxide nanoparticles were successfully fabricated by an economical wet-impregnation method and used as a photocatalyst for the degradation of aqueous methylene blue dye under UV-light at room temperature.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | | | - Shanmugam Mani
- Department of Science and Humanities
- Institute of Aeronautical Engineering
- Hyderabad 500043
- India
| | - Suguna Perumal
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
- Department of Applied Chemistry
| | - Rajangam Vinodh
- School of Electrical and Computer Engineering
- Pusan National University
- Busan 46241
- Republic of Korea
| | - Somanathan Thirunavukkarasu
- Department of Chemistry
- School of Basic Sciences
- Vels Institute of Science
- Technology & Advanced Studies (VISTAS)
- Chennai – 600117
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
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Nitrogen-doped reduced graphene oxide as a sensing platform for detection of guanine and application in cell necrosis. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00856-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Pargoletti E, Hossain UH, Di Bernardo I, Chen H, Tran-Phu T, Lipton-Duffin J, Cappelletti G, Tricoli A. Room-temperature photodetectors and VOC sensors based on graphene oxide-ZnO nano-heterojunctions. NANOSCALE 2019; 11:22932-22945. [PMID: 31763664 DOI: 10.1039/c9nr08901b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The rapid development of smart wearable electronics is driving the engineering of novel miniaturized sensing materials that can rapidly respond to very small changes in the concentration of biomarkers at room temperature. Carbon-based nanomaterials offer numerous attractive properties such as low resistivity, good mechanical robustness and integration potential, but lack a strong detection and transduction mechanism for the measurement of chemical molecules or photons. Here, we present a three-dimensional nanostructured architecture comprising optimally integrated graphene oxide (GO)-ZnO heterojunctions for the room temperature sensing of volatile biomarkers. We show that this layout also provides excellent response to UV light showcasing its applicability as a visible-blind photodetector. Notably, the optimal integration of well-dispersed GO nanodomains in a 3D ZnO network significantly enhances the room-temperature chemical sensitivity and light responsivity, while higher GO contents drastically worsen the material performance. This is attributed to the different roles of GO at low and high contents. Small amounts of GO lead to the formation of electron depleted nano-heterojunctions with excellent electron-hole separation efficiency. In contrast, large amounts of GO form a percolating electrical network that inhibits the light and chemical-sensing properties of the ZnO nanoparticles. Our optimal GO-ZnO demonstrates 33 A W-1 responsivity to UV light as well as the room temperature detection of volatile organic compounds down to 100 ppb. We believe that these findings provide guidelines for the future engineering of hybrid carbon-metal oxide devices for applications extending from optoelectronics to chemical sensing and electrocatalysis.
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Affiliation(s)
- Eleonora Pargoletti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milano, Italy. and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Via Giusti 9, 50121, Firenze, Italy
| | - Umme H Hossain
- Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Iolanda Di Bernardo
- Nanotechnology Research Laboratory, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia.
| | - Hongjun Chen
- Nanotechnology Research Laboratory, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia.
| | - Thanh Tran-Phu
- Nanotechnology Research Laboratory, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia.
| | - Josh Lipton-Duffin
- Institute for Future Environments (IFE), Central Analytical Research Facility (CARF), Queensland University of Technology (QUT), Brisbane, Australia
| | - Giuseppe Cappelletti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133, Milano, Italy. and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Via Giusti 9, 50121, Firenze, Italy
| | - Antonio Tricoli
- Nanotechnology Research Laboratory, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia.
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Electrochemical degradation of neutral red on PbO2/α-Al2O3 composite electrodes: Electrode characterization, byproducts and degradation mechanism. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115684] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Synthesis and Characterization of Zinc Oxide Nanoparticles Using Cynara scolymus Leaves: Enhanced Hemolytic, Antimicrobial, Antiproliferative, and Photocatalytic Activity. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01686-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Ishwarya R, Jayakumar R, Abinaya M, Govindarajan M, Alharbi NS, Kadaikunnan S, Khaled JM, Al-Anbr MN, Vaseeharan B. Facile synthesis of haemocyanin-capped zinc oxide nanoparticles: Effect on growth performance, digestive-enzyme activity, and immune responses of Penaeus semisulcatus. Int J Biol Macromol 2019; 139:688-696. [DOI: 10.1016/j.ijbiomac.2019.07.216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 01/09/2023]
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Titus D, Samuel EJJ. Photocatalytic Degradation of Azo Dye Using Biogenic SnO2 Nanoparticles with Antifungal Property: RSM Optimization and Kinetic Study. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01585-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Electrocatalytic and energy storage performance of bio-derived sulphur-nitrogen-doped carbon. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.12.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Prabhu SM, Khan A, Hasmath Farzana M, Hwang GC, Lee W, Lee G. Synthesis and characterization of graphene oxide-doped nano-hydroxyapatite and its adsorption performance of toxic diazo dyes from aqueous solution. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Abstract
Development of a novel approach for synthesizing nanostructured catalysts and achieving further improvements in catalytic activity, effectiveness, and efficiency remains a major challenge. In this report, we describe the preparation of a nanostructured PdO/ZnO@mSiO2 hybrid nanocatalyst featuring well-dispersed PdO nanoparticles within hollow ZnO@mSiO2. The as-prepared PdO/ZnO@mSiO2 hybrid nanocatalyst exhibited good morphological features, derived from the controlled stepwise synthesis from Pd/PS@ZIF-8@mSiO2 (PS = polystyrene). The morphology, size, oxidation state, crystallinity, and thermal stability of the prepared PdO/ZnO@mSiO2 hybrid nanocatalyst were confirmed by a series of physicochemical techniques. The PdO/ZnO@mSiO2 hybrid nanocatalyst showed very high catalytic efficiency in the reduction of 4-nitrophenol and various nitroarenes under eco-friendly conditions. Therefore, the PdO/ZnO@mSiO2 hybrid nanocatalyst is a promising alternative catalyst for applications in environmental remediation.
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Atchudan R, Edison TNJI, Aseer KR, Perumal S, Lee YR. Hydrothermal conversion of Magnolia liliiflora into nitrogen-doped carbon dots as an effective turn-off fluorescence sensing, multi-colour cell imaging and fluorescent ink. Colloids Surf B Biointerfaces 2018; 169:321-328. [PMID: 29800907 DOI: 10.1016/j.colsurfb.2018.05.032] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 11/26/2022]
Abstract
The present work illustrates the potential uses of nitrogen-doped multi-fluorescent carbon dots (N-CDs) for Fe3+ sensing, cellular multi-colour imaging, and fluorescent ink. N-CDs were synthesized using Magnolia liliiflora flower by the simple hydrothermal method. The resulted N-CDs was found to be nearly spherical in shape with the size of about 4 ± 1 nm and showed competitive quantum yield around 11%. The synthesized N-CDs with uniform size distribution and high content of nitrogen and oxygen-bearing functional groups exhibit excellent dispersibility in aqueous media. The N-CDs were able to detect a high concentration of Fe3+ ions (1-1000 μM) with a limit of detection is about 1.2 μM by forming N-CDs-Fe3+ complex due to the functional groups such as nitrogen, carbonyl and carboxyl on the surface of N-CDs. Thus they could be used to remove pollutants from industrial wastewater. The electronic charge on the surface of the N-CDs and N-CDs-Fe3+ complex (zeta potential) is around -36 and 18 mV, respectively. In addition, these N-CDs show excitation-dependent fluorescence that was utilized for multi-colour in vitro cellular imaging in rat liver cells (Clone 9 hepatocytes). The N-CDs are rapidly uptake in the cell cytoplasm and showed high cytocompatibility on cellular morphology. Moreover, as the N-CDs possess strong fluorescence and anti-coagulation they could be utilized in fluorescent ink pens.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | | | - Kanikkai Raja Aseer
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, 38453, Republic of Korea
| | - Suguna Perumal
- Department of Applied Chemistry, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Muthuchamy N, Atchudan R, Edison TNJI, Perumal S, Lee YR. High-performance glucose biosensor based on green synthesized zinc oxide nanoparticle embedded nitrogen-doped carbon sheet. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.059] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Atchudan R, Edison TNJI, Perumal S, Karthik N, Karthikeyan D, Shanmugam M, Lee YR. Concurrent synthesis of nitrogen-doped carbon dots for cell imaging and ZnO@nitrogen-doped carbon sheets for photocatalytic degradation of methylene blue. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.09.038] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Eco-friendly natural rubber–silver (NR–Ag) composites for photo-assisted degradation of methyl orange dye. IRANIAN POLYMER JOURNAL 2018. [DOI: 10.1007/s13726-017-0580-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Thomas M, Natarajan TS, Sheikh MUD, Bano M, Khan F. Self-organized graphene oxide and TiO 2 nanoparticles incorporated alginate/carboxymethyl cellulose nanocomposites with efficient photocatalytic activity under direct sunlight. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.05.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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43
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Brindha A, Sivakumar T. Visible active N, S co-doped TiO2/graphene photocatalysts for the degradation of hazardous dyes. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.03.010] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Ashiq MN, Irshad S, Ehsan MF, Rehman S, Farooq S, Najam-Ul-Haq M, Zia A. Visible-light active tin selenide nanostructures: synthesis, characterization and photocatalytic activity. NEW J CHEM 2017. [DOI: 10.1039/c7nj04030j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic activity and proposed reaction mechanism of degradation of Methylene Blue dye by SnSe nanostructures.
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Affiliation(s)
| | - Samia Irshad
- Institute of Chemical Sciences
- Bahauddin Zakariya University
- Multan-60800
- Pakistan
| | - Muhammad Fahad Ehsan
- School of Natural Sciences
- Department of Chemistry
- National University of Science and Technology (NUST)
- Islamabad
- Pakistan
| | - Sidra Rehman
- Institute of Chemical Sciences
- Bahauddin Zakariya University
- Multan-60800
- Pakistan
| | - Saima Farooq
- Department of Biological Sciences and Chemistry
- College of Arts and Science
- University of Nizwa
- Nizwa
- Sultanate of Oman
| | | | - Adeel Zia
- School of Natural Sciences
- Department of Chemistry
- National University of Science and Technology (NUST)
- Islamabad
- Pakistan
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