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Saif Al Essai KR, Moheyelden RE, Bosu S, Rajamohan N, Rajasimman M. Enhanced mitigation of acidic and basic dyes by ZnO based nano-photocatalysis: current applications and future perspectives. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:139. [PMID: 38483690 DOI: 10.1007/s10653-024-01935-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/22/2024] [Indexed: 03/19/2024]
Abstract
Dye wastewater possess immense toxicity with carcinogenic properties and they persist in environment owing to their stability and resistance to chemical and photochemical changes. The bio degradability of dye-contaminated wastewater is low due to its complex molecular structure. Nano-photocatalysts based on zinc oxide are reported as one of the effective metal oxides for dye remediation due to their photostability, enhanced UV and visible absorption capabilities in an affordable manner. An electron-hole pair forms when electrons in the valence band of ZnO nano-photocatalyst transfer into the conduction band by absorbing UV light. The review article presents a detailed review on ZnO applications for treating acidic and basic dyes along with the dye degradation performance based on operating conditions and photocatalytic kinetic models. Several acidic and basic dyes have been shown to degrade efficiently using ZnO and its nanocomposites. Higher removal percentages for crystal violet was reported at pH 12 by ZnO/Graphene oxide catalyst under 400 nm UV light, whereas acidic dye Rhodamine B at a pH of 5.8 was degraded to 100% by pristine ZnO. The mechanism of action of ZnO nanocatalysts in degrading the dye contamination are reported and the research gaps to make these agents in environmental remediation on real time operations are discussed.
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Affiliation(s)
| | | | - Subrajit Bosu
- Chemical Engineering Section, Faculty of Engineering, Sohar University, 311, Sohar, Oman
| | - Natarajan Rajamohan
- Chemical Engineering Section, Faculty of Engineering, Sohar University, 311, Sohar, Oman.
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Al-Mamun MR, Iqbal Rokon MZ, Rahim MA, Hossain MI, Islam MS, Ali MR, Bacchu MS, Waizumi H, Komeda T, Hossain Khan MZ. Enhanced photocatalytic activity of Cu and Ni-doped ZnO nanostructures: A comparative study of methyl orange dye degradation in aqueous solution. Heliyon 2023; 9:e16506. [PMID: 37484277 PMCID: PMC10360600 DOI: 10.1016/j.heliyon.2023.e16506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/12/2023] [Accepted: 05/18/2023] [Indexed: 07/25/2023] Open
Abstract
Heterogeneous photocatalysis has been considered one of the most effective and efficient techniques to remove organic contaminants from wastewater. The present work was designed to examine the photocatalytic performance of metal (Cu and Ni) doped ZnO nanocomposites in methyl orange (MO) dye degradation under UV light illumination. The wurtzite hexagonal structure was observed for both undoped/doped ZnO and a crystalline size ranging between 8.84 ± 0.71 to 12.91 ± 0.84 nm by X-ray diffraction (XRD) analysis. The scanning electron microscope (SEM) and energy dispersive X-ray (EDX) revealed the irregular spherical shape with particle diameter (34.43 ± 6.03 to 26.43 ± 4.14 nm) and ensured the purity of the individual elemental composition respectively. The chemical bonds (O-H group) and binding energy (1021.8 eV) were identified by Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results respectively. The bandgap energy was decreased from 3.44 to 3.16 eV when Ni dopant was added to the ZnO lattice. The comparative photocatalytic activity was observed in undoped and doped nanocomposites and found to be 76.31%, 81.95%, 89.30%, and 83.39% for ZnO, Cu/ZnO, Ni/ZnO, and Cu/Ni/ZnO photocatalysts, respectively, for a particular dose (0.210 g) and dye concentration (10 mg L-1) after 180 min illumination of UV light. The photocatalytic performance was increased up to 94.40% with the increase of pH (12.0) whereas reduced (35.12%) with an increase in initial dye concentration (40 mg L-1) using Ni/ZnO nanocomposite. The Ni/ZnO nanocomposite showed excellent reusability and was found 81% after four consecutive cycles. The best-fitted reaction kinetics was followed by pseudo-first-order and found reaction rate constant (0.0117 min-1) using Ni/ZnO nanocomposite. The enhanced photodegradation efficiency was observed due to decreases in bandgap energy and the crystalline size of the photocatalyst. Therefore, Ni/ZnO nanocomposite could be used as an emerging photocatalyst to degrade bio-persistent organic dye compounds from textile wastewater.
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Affiliation(s)
- Md. Rashid Al-Mamun
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton T6G 1H9, Alberta, Canada
| | - Md. Zaveed Iqbal Rokon
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Md. Abdur Rahim
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Md. Ikram Hossain
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Md. Shahinoor Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka 1000, Bangladesh
- Research Expert, Daffodil International University (DIU), Dhaka 1312, Bangladesh
| | - Md. Romzan Ali
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Md Sadek Bacchu
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Hiroki Waizumi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki-Aza-Aoba, Aoba-Ku, Sendai 9808578, Japan
| | - Tadahiro Komeda
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-0877, Japan
| | - Md Zaved Hossain Khan
- Department of Chemical Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
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Rattanaburi P, Nuengmatcha P, Pimsen R, Porrawatkul P. Photocatalytic degradation of organic dyes on magnetically separable barium hexaferrite as photocatalyst under conditions of visible light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:68969-68986. [PMID: 37129818 DOI: 10.1007/s11356-023-27331-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/26/2023] [Indexed: 05/03/2023]
Abstract
In this paper, we present the first attempt to evaluate the role of carboxymethyl cellulose (CMC) as a chelating agent in the sol-gel auto-combustion method of producing barium hexaferrite (BaFe12O19). We also report the application of the system as a photocatalyst for dye degradation. The formation, morphology, and crystalline structure of the synthesized nanoparticles are determined using XRD, SEM, EDS, VSM, FTIR, and TEM techniques. High efficiency under visible light, with a band gap of 1.62 eV and a BET surface of 17.93 m2/g, has been observed for the BaFe12O19 catalyst. The operating parameters, such as reaction time, initial dye concentration, light intensity, reusability, and dye type, are studied. Degradation rates as high as 98.26% (Kapp = 0.082 min-1) and 89.07% (Kapp = 0.0743 min-1) were obtained for cases of methylene blue and malachite green under conditions of visible light irradiations when BaFe12O19 was used. The BaFe12O19 catalyst has been shown to exhibit a high degradation performance for cationic dyes. Furthermore, BaFe12O19 magnetic nanoparticles show excellent reusability for dye degradation because the photocatalyst did not exhibit a significant decrease in its activity even after five runs (81.56%). As a result, the current study confirmed that photocatalytic degradation was a promising technology for saving water and treating wastewater formed from textile dye industries. The technique can be used to study the efficiency of photocatalytic degradation and understand the process of recycling waste effluents under conditions of minimized water use.
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Affiliation(s)
- Parintip Rattanaburi
- Creative Innovation in Science and Technology, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat, 80280, Thailand
| | - Prawit Nuengmatcha
- Creative Innovation in Science and Technology, Faculty of Science and Technology, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat, 80280, Thailand.
- Department of Chemistry, Faculty of Science and Technology, Nanomaterials Chemistry Research Unit, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat, 80280, Thailand.
| | - Rungnapa Pimsen
- Department of Chemistry, Faculty of Science and Technology, Nanomaterials Chemistry Research Unit, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat, 80280, Thailand
| | - Paweena Porrawatkul
- Department of Chemistry, Faculty of Science and Technology, Nanomaterials Chemistry Research Unit, Nakhon Si Thammarat Rajabhat University, Nakhon Si Thammarat, 80280, Thailand
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Sodeinde KO, Olusanya SO, Lawal OS, Sriariyanun M, Adediran AA. Enhanced adsorptional-photocatalytic degradation of chloramphenicol by reduced graphene oxide-zinc oxide nanocomposite. Sci Rep 2022; 12:17054. [PMID: 36224225 PMCID: PMC9556521 DOI: 10.1038/s41598-022-21266-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 09/26/2022] [Indexed: 12/30/2022] Open
Abstract
Improper discharge of waste dry cell batteries and untreated antibiotics laden effluents to the environment pose serious threat to the sustenance of the ecosystem. In this study, synthesis of reduced graphene oxide-ZnO (rGO-ZnO) nanocomposite was achieved via a bioreduction process using waste dry cell battery rod as graphene oxide (GO) precursor. The nanocomposite was applied in the ultraviolet photocatalytic degradation of chloramphenicol (CAP) at 290 nm in the presence of hydrogen peroxide. RGO-ZnO nanocomposite was characterized by SEM, TEM, XRD, BET and FTIR. TEM image of the nanocomposite revealed a polydispersed, quasi-spherical zinc oxide on a coarse reduced graphene oxide surface. XRD patterns showed sharp, prominent crystalline wurtzite hexagonal phases of ZnO and rGO. BET surface area of the nanocomposite was 722 m2/g with pore size of 2 nm and pore volume of 0.4 cc/g. % photo-removal efficiency increased with increasing irradiation time but diminished at higher pH, temperature and CAP concentration. Photocatalytic adsorption process fitted more accurately into the Freundlich model (R2 = 0.99) indicating a multilayer adsorption mechanism. 92.74% reduction in chemical oxygen demand (COD) level of veterinary effluent was obtained after treatment with the nanocomposite thus affirming its effectiveness in real waste water samples.
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Affiliation(s)
- K. O. Sodeinde
- grid.448729.40000 0004 6023 8256Materials and Nanoresearch Unit, Department of Industrial Chemistry, Federal University, Oye-Ekiti, Ekiti State Nigeria
| | - S. O. Olusanya
- grid.448729.40000 0004 6023 8256Materials and Nanoresearch Unit, Department of Industrial Chemistry, Federal University, Oye-Ekiti, Ekiti State Nigeria
| | - O. S. Lawal
- grid.448729.40000 0004 6023 8256Materials and Nanoresearch Unit, Department of Industrial Chemistry, Federal University, Oye-Ekiti, Ekiti State Nigeria
| | - M. Sriariyanun
- grid.443738.f0000 0004 0617 4490Biorefinery and Process Automation Engineering Center, The Sirindhorn International Thai-German Graduate School of Engineering, King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
| | - A. A. Adediran
- grid.448923.00000 0004 1767 6410Materials Design and Structural Integrity Group, Department of Mechanical Engineering, Landmark University, Omu-Aran, Kwara State Nigeria
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Singh S, Khasnabis S, Anil AG, Kumar V, Kumar Naik TS, Nath B, Garg VK, Singh J, Ramamurthy PC. Multifunctional nanohybrid for simultaneous detection and removal of Arsenic(III) from aqueous solutions. CHEMOSPHERE 2022; 289:133101. [PMID: 34863719 DOI: 10.1016/j.chemosphere.2021.133101] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/27/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Herein, for the adsorption and detection of As (III), multifunctional nanohybrid have been synthesized using a solvothermal approach. Structural and functional characterizations confirmed the impregnation of the ZnO over graphene oxide. Nanohybrid exhibits a remarkable qmax (maximum adsorption capacity) of 8.17 mg/g, at an adsorbent dose of 3 g/L and pH of 8.23. Higher adsorption with nanohybrid was attributed to a large BET surface area of 32.950 m2/g. The chemical nature and adsorption behaviour of As(III) on ZnO-GO were studied by fitting the data with various adsorption isotherms (Langmuir & Freundlich) and kinetics models (six models). It is observed from the findings that removal of As(III) with ZnO-GO nanocomposite appears to be technically feasible with high removal efficiency. The feasibility of the nanocomposite to function as a sensor for the detection of As(III) was also evaluated. The fabricated sensor could detect As(III) with a lower limit of detection of 0.24 μM and linear range up to 80 μM. Overall, this study is significant in nanohybrid as a multifunctional composite for the adsorption and detection of As (III) from wastewater.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 560012, India
| | - Sutripto Khasnabis
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Amith G Anil
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Vijay Kumar
- Department of Chemistry, Central Ayurveda Research Institute, Jhansi, U.P., India
| | - Ts Sunil Kumar Naik
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Bidisha Nath
- Interdisciplinary Centre for Energy Research, Indian Institute of Science, Bangalore, 56001, India
| | - Vinod Kumar Garg
- Department of Environmental Sciences and Technology, Central University of Punjab, Mansa Road, Bathinda, 151001, Punjab, India
| | - Joginder Singh
- Department of Microbiology, Lovely Professional University, Jalandhar, Punjab, 144111, India.
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 560012, India.
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Shaheen S, Iqbal A, Ikram M, Imran M, Naz S, Ul-Hamid A, Shahzadi A, Nabgan W, Haider J, Haider A. Graphene oxide-ZnO nanorods for efficient dye degradation, antibacterial and in-silico analysis. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-02251-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Krishnan SAG, Abinaya S, Arthanareeswaran G, Govindaraju S, Yun K. Surface-constructing of visible-light Bi 2WO 6/CeO 2 nanophotocatalyst grafted PVDF membrane for degradation of tetracycline and humic acid. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126747. [PMID: 34364210 DOI: 10.1016/j.jhazmat.2021.126747] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/13/2021] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
The synthesis of Bi2WO6 and CeO2 photocatalytic nanomaterials exhibit a great ability to photodegrade the antibiotics and shown excellent oxidation of various organic pollutants. Heterostructure 1:1 & 2:1 Bi2WO6/CeO2 nanocomposite was successfully synthesized via the facile sono-dispersion method and exquisite photocatalytic activity. The 0.5 wt% of nanocomposites were well-grafted on PVDF membrane surface via an in-situ polymerization method using polyacrylic acid. The fourier transform infrared (FTIR) spectra demonstrated that the network formation in PVDF induced by the -COOH functional group in acrylic acid. The grafted membrane morphology and strong binding ability over the membranes were validated by scanning electron microscope with energy dispersion (SEM-EDS) and X-ray photoelectron spectroscopy (XPS), respectively. The permeate flux of 49.2 L.m-2 h-1 and 41.65 L.m-2 h were observed for tetracycline and the humic acid solution respectively for 1 wt% of PVP and 0.5 wt% of photocatalytic nanomaterials in PVDF membrane. The tetracycline and humic acid photodegradation rate of 82% and 78% and total resistance of 1.43 × 1010 m-1 and 1.64 × 1010 m-1, 83.5% and 77% flux recovery ratio were observed with N5 membrane. The 2:1 Bi2WO6/CeO2 nanocomposite grafted membrane showed a high permeate flux and better photodegradation ability of organic pollutants in the wastewater.
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Affiliation(s)
- S A Gokula Krishnan
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India 620015
| | - S Abinaya
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India 620015
| | - G Arthanareeswaran
- Membrane Research Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India 620015.
| | | | - Kyusik Yun
- Department of BioNano Technology, Gachon University, Seongnam-si, South Korea
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Singh S, Anil AG, Khasnabis S, Kumar V, Nath B, Adiga V, Kumar Naik TSS, Subramanian S, Kumar V, Singh J, Ramamurthy PC. Sustainable removal of Cr(VI) using graphene oxide-zinc oxide nanohybrid: Adsorption kinetics, isotherms and thermodynamics. ENVIRONMENTAL RESEARCH 2022; 203:111891. [PMID: 34419468 DOI: 10.1016/j.envres.2021.111891] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/05/2021] [Accepted: 08/12/2021] [Indexed: 05/19/2023]
Abstract
Metal-based adsorbents are limited for hexavalent chromium [Cr(VI)] adsorption from aqueous solutions because of their low adsorption capacities and slow adsorption kinetics. In the present study, decorated zinc oxide (ZnO) nanoparticles (NPs) on graphene oxide (GO) nanoparticles were synthesized via the solvothermal process. The deposition of ZnO NPs on graphene oxide for the nanohybrid (ZnO-GO) improves Cr(VI) mobility in the nanocomposite or nanohybrid, thereby improving the Cr(VI) adsorption kinetics and removal capacity. Surface deposition of ZnO on graphene oxide was characterized through Fourie Transform Infra-red (FTIR), UV-Visible, X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) techniques. These characterizations suggest the formation of ZnO-GO nanocomposite with a specific area of 32.95 m2/g and pore volume of 0.058 cm2/g. Batch adsorption analysis was carried to evaluate the influence of operational parameters, equilibrium isotherm, adsorption kinetics and thermodynamics. The removal efficiency of Cr(VI) increases with increasing time and adsorbent dosage. FTIR, FESEM and BET analysis before and after the adsorption studies suggest the obvious changes in the surface functionalization and morphology of the ZnO-GO nanocomposites. The removal efficiency increases from high-acidic to neutral pH and continues to decrease under alkaline conditions as well. Mathematical modeling validates that the adsorption follows Langmuir isotherm and fits well with the pseudo 2nd order kinetics (Type 5) model, indicating a homogeneous adsorption process. The thermodynamics study reveals that Cr(VI) adsorption on ZnO-GO is spontaneous, endothermic, and entropy-driven. A negative value of Gibb's Free Energy represents the thermodynamic spontaneity and feasibility of the sorption process. To the best of our knowledge, this is the first study of Cr(VI) removal from aqueous solution using this hybrid nanocomposite at near-neutral pH. The synthesized nanocomposites prove to be excellent candidates for Cr(VI) removal from water bodies and natural wastewater systems.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India
| | - Amith G Anil
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Sutripto Khasnabis
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Vijay Kumar
- Department of Chemistry, Central Ayurveda Research Institute, Jhansi, U.P, India
| | - Bidisha Nath
- Interdisciplinary Centre for Energy Research, Indian Institute of Science, Bangalore, 56001, India
| | - Varun Adiga
- Interdisciplinary Centre for Energy Research, Indian Institute of Science, Bangalore, 56001, India
| | - T S Sunil Kumar Naik
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - S Subramanian
- Department of Materials Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Vineet Kumar
- Department of Botany, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Joginder Singh
- Department of Microbiology, Lovely Professional University, Jalandhar, Punjab, 144111, India.
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India.
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Kumar S, Kaushik R, Purohit L. Hetro-nanostructured Se-ZnO sustained with RGO nanosheets for enhanced photocatalytic degradation of p-Chlorophenol, p-Nitrophenol and Methylene blue. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119219] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Yashni G, Al-Gheethi A, Radin Mohamed RMS, Dai-Viet NV, Al-Kahtani AA, Al-Sahari M, Nor Hazhar NJ, Noman E, Alkhadher S. Bio-inspired ZnO NPs synthesized from Citrus sinensis peels extract for Congo red removal from textile wastewater via photocatalysis: Optimization, mechanisms, techno-economic analysis. CHEMOSPHERE 2021; 281:130661. [PMID: 34029959 DOI: 10.1016/j.chemosphere.2021.130661] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/23/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Textile industry is one of the most environmental unfriendly industrial processes due to the massive generation of colored wastewater contaminated with dyes and other chemical auxiliaries. These contaminants are known to have undesirable consequences to ecosystem. The present study investigated the best operating parameters for the removal of congo red (CR, as the model for dye wastewater) by orange peels extract biosynthesized zinc oxide nanoparticles (ZnO NPs) via photocatalysis in an aqueous solution. The response surface methodology (RSM) with ZnO NPs loadings (0.05-0.20 g), pH (3.00-11.00), and initial CR concentration (5-20 ppm) were used for the optimization process. The applicability of ZnO NPs in the dye wastewater treatment was evaluated based on the techno-economic analysis (TEA). ZnO NPs exhibited hexagonal wurtzite structure with = C-H, C-O, -C-O-C, CC, O-H as the main functional groups. The maximum degradation of CR was more than 96% with 0.171 g of ZnO NPs, at pH 6.43 and 5 ppm of CR and 90% of the R2 coefficient. The specific cost of ZnO NPs production is USD 20.25 per kg. These findings indicated that the biosynthesized ZnO NPs with orange peels extract provides alternative method for treating dye wastewater.
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Affiliation(s)
- G Yashni
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia
| | - Adel Al-Gheethi
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia.
| | - Radin Maya Saphira Radin Mohamed
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia.
| | - N Vo Dai-Viet
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
| | - Abdullah A Al-Kahtani
- Department of Chemistry, College of Science, Bld#5, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed Al-Sahari
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia
| | - Nurul Jihan Nor Hazhar
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia
| | - Efaq Noman
- Department of Applied Microbiology, Faculty of Applied Sciences, Taiz University, Taiz, Yemen; Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia (UTHM), Pagoh Higher Education Hub, KM 1, Jalan Panchor, 84000, Panchor, Johor, Malaysia
| | - Sadeq Alkhadher
- Micropollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400, Parit Raja, Batu Pahat, Johor, Malaysia
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Ioni YV, Kraevsky SV, Groshkova YA, Buslaeva EY. Immobilization of In2O3 nanoparticles on the surface of reduced graphene oxide. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.09.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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12
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Mirikaram N, Pérez-Molina Á, Morales-Torres S, Salemi A, Maldonado-Hódar FJ, Pastrana-Martínez LM. Photocatalytic Perfomance of ZnO-Graphene Oxide Composites towards the Degradation of Vanillic Acid under Solar Radiation and Visible-LED. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1576. [PMID: 34203965 PMCID: PMC8232730 DOI: 10.3390/nano11061576] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/08/2021] [Accepted: 06/11/2021] [Indexed: 01/08/2023]
Abstract
Graphene oxide (GO) is used to enhance the photocatalytic activity of ZnO nanoparticles for the degradation of vanillic acid (VA) under simulated solar light and visible-LED (λ > 430 nm). ZnO-GO composites are prepared by a mixing and sonication process with different GO loadings (i.e., from 1.8 to 6.5 wt.%). The materials are extensively characterized by thermogravimetric analysis (TGA), physisorption of N2, X-ray diffraction (XRD), infrared spectroscopy (FTIR), scanning electron microscopy (SEM), point of zero charge (pHPZC), and UV-Vis diffuse reflectance spectroscopy (DRUV). The presence of GO increases the photocatalytic activity of all the prepared composites in comparison with the pristine ZnO. The highest photocatalytic activity is found for the composite containing 5.5 wt.% of GO (i.e., ZnO-GO5.5), reaching a VA degradation of 99% and 35% under solar light and visible-LED, respectively. Higher TOC removal/VA degradation ratios are obtained from the experiments carried out under visible-LED, indicating a more effective process for the mineralization of VA than those observed under simulated solar light. The influence of hole, radical, and non-radical scavengers is studied in order to assess the occurrence of the reactive oxygen species (ROS) involved in the photocatalytic mechanism. The study of the photo-stability during three reuse experiments indicates that the presence of GO in the composites reduces the photocorrosion in comparison with pristine ZnO.
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Affiliation(s)
- Neda Mirikaram
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
- Environmental Sciences Research Institute, Shahid Beheshti University, Tehran 19839-63113, Iran;
| | - Álvaro Pérez-Molina
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Sergio Morales-Torres
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Amir Salemi
- Environmental Sciences Research Institute, Shahid Beheshti University, Tehran 19839-63113, Iran;
| | - Francisco J. Maldonado-Hódar
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Luisa M. Pastrana-Martínez
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
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Leiva E, Tapia C, Rodríguez C. Removal of Mn(II) from Acidic Wastewaters Using Graphene Oxide-ZnO Nanocomposites. Molecules 2021; 26:molecules26092713. [PMID: 34063077 PMCID: PMC8125303 DOI: 10.3390/molecules26092713] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 11/16/2022] Open
Abstract
Pollution due to acidic and metal-enriched waters affects the quality of surface and groundwater resources, limiting their uses for various purposes. Particularly, manganese pollution has attracted attention due to its impact on human health and its negative effects on ecosystems. Applications of nanomaterials such as graphene oxide (GO) have emerged as potential candidates for removing complex contaminants. In this study, we present the preliminary results of the removal of Mn(II) ions from acidic waters by using GO functionalized with zinc oxide nanoparticles (ZnO). Batch adsorption experiments were performed under two different acidity conditions (pH1 = 5.0 and pH2 = 4.0), in order to evaluate the impact of acid pH on the adsorption capacity. We observed that the adsorption of Mn(II) was independent of the pHPZC value of the nanoadsorbents. The qmax with GO/ZnO nanocomposites was 5.6 mg/g (34.1% removal) at pH = 5.0, while with more acidic conditions (pH = 4.0) it reached 12.6 mg/g (61.2% removal). In turn, the results show that GO/ZnO nanocomposites were more efficient to remove Mn(II) compared with non-functionalized GO under the pH2 condition (pH2 = 4.0). Both Langmuir and Freundlich models fit well with the adsorption process, suggesting that both mechanisms are involved in the removal of Mn(II) with GO and GO/ZnO nanocomposites. Furthermore, adsorption isotherms were efficiently modeled with the pseudo-second-order kinetic model. These results indicate that the removal of Mn(II) by GO/ZnO is strongly influenced by the pH of the solution, and the decoration with ZnO significantly increases the adsorption capacity of Mn(II) ions. These findings can provide valuable information for optimizing the design and configuration of wastewater treatment technologies based on GO nanomaterials for the removal of Mn(II) from natural and industrial waters.
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Affiliation(s)
- Eduardo Leiva
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.T.); (C.R.)
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Correspondence: ; Tel.: +56-2-2354-7224; Fax: +56-2-2354-5876
| | - Camila Tapia
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.T.); (C.R.)
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Ñuñoa 7800003, Chile
| | - Carolina Rodríguez
- Departamento de Química Inorgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.T.); (C.R.)
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Intensification of Bi7O9I3 nanoparticles distribution on ZnO via ultrasound induction approach used in photocatalytic water treatment under solar light irradiation. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116086] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Oliveira AG, Andrade JDL, Montanha MC, Ogawa CYL, de Souza Freitas TKF, Moraes JCG, Sato F, Lima SM, da Cunha Andrade LH, Hechenleitner AAW, Pineda EAG, de Oliveira DMF. Wastewater treatment using Mg-doped ZnO nano-semiconductors: A study of their potential use in environmental remediation. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113078] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Graphene Oxide-ZnO Nanocomposites for Removal of Aluminum and Copper Ions from Acid Mine Drainage Wastewater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17186911. [PMID: 32967362 PMCID: PMC7559710 DOI: 10.3390/ijerph17186911] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
Adsorption technologies are a focus of interest for the removal of pollutants in water treatment systems. These removal methods offer several design, operation and efficiency advantages over other wastewater remediation technologies. Particularly, graphene oxide (GO) has attracted great attention due to its high surface area and its effectiveness in removing heavy metals. In this work, we study the functionalization of GO with zinc oxide nanoparticles (ZnO) to improve the removal capacity of aluminum (Al) and copper (Cu) in acidic waters. Experiments were performed at different pH conditions (with and without pH adjustment). In both cases, decorated GO (GO/ZnO) nanocomposites showed an improvement in the removal capacity compared with non-functionalized GO, even when the pH of zero charge (pHPZC) was higher for GO/ZnO (5.57) than for GO (3.98). In adsorption experiments without pH adjustment, the maximum removal capacities for Al and Cu were 29.1 mg/g and 45.5 mg/g, respectively. The maximum removal percentages of the studied cations (Al and Cu) were higher than 88%. Further, under more acidic conditions (pH 4), the maximum sorption capacities using GO/ZnO as adsorbent were 19.9 mg/g and 33.5 mg/g for Al and Cu, respectively. Moreover, the removal percentages reach 95.6% for Al and 92.9% for Cu. This shows that decoration with ZnO nanoparticles is a good option for improving the sorption capacity of GO for Cu removal and to a lesser extent for Al, even when the pH was not favorable in terms of electrostatic affinity for cations. These findings contribute to a better understanding of the potential and effectiveness of GO functionalization with ZnO nanoparticles to treat acidic waters contaminated with heavy metals and its applicability for wastewater remediation.
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Progress in Graphene/Metal Oxide Composite Photocatalysts for Degradation of Organic Pollutants. Catalysts 2020. [DOI: 10.3390/catal10080921] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The sewage discharge of industrial wastewater seriously pollutes the water source and rivers, which is very harmful to the health of humans and wildlife. Among those methods for treating wastewater, photocatalysis is a sustainable and environmental-friendly technique for removing the organic pollutants with no secondary pollution. As a popular photocatalyst, graphene/metal oxide nanocomposites have been widely reported in the photocatalysis field. In this review, the recent progress of graphene/metal oxide composites including binary and ternary composites is summarized in detail. The synthesis, microstructure design, and application performance of graphene/TiO2, graphene/ZnO, graphene/SnO2, graphene/WO3, graphene/Fe2O3, and graphene/Cu2O composites are introduced firstly. Then, the synthesis, the selection of components, and the performance of various ternary composites are summarized specifically, including graphene/TiO2-, graphene/ZnO-, graphene/SnO2-, graphene/Cu2O-, graphene/FexOy-, and graphene/Bi-containing ternary composites. At last, the possible research directions of graphene/metal oxide nanocomposites are put forward. The main purpose is to provide a theoretical guidance for designing high-performance graphene/metal oxide photocatalysts for wastewater treatment.
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Efficient photocatalytic degradation of furosemide by a novel sonoprecipited ZnO over ion exchanged clinoptilolite nanorods. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116800] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Balakumar V, Kim H, Manivannan R, Kim H, Ryu JW, Heo G, Son YA. Ultrasound-assisted method to improve the structure of CeO 2@polyprrole core-shell nanosphere and its photocatalytic reduction of hazardous Cr 6. ULTRASONICS SONOCHEMISTRY 2019; 59:104738. [PMID: 31476700 DOI: 10.1016/j.ultsonch.2019.104738] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 08/12/2019] [Accepted: 08/18/2019] [Indexed: 06/10/2023]
Abstract
In this work, the CeO2@polypyrrole (CeO2@PPy) core-shell nanosphere has been synthesized via an ultra-sonication method using bath type (WUC-D22H, Daihan Scientific, Korea) and they are utilized for the photo-reduction of hazardous Cr6+ to benign Cr3+. The ultrasonic frequency and power were 20 kHz and 100 W, respectively. The PPy shielded CeO2 in aqueous solution could prevent the dissolution of CeO2 and to improve the photocatalytic ability of CeO2. X-ray diffraction was used to confirm the crystalline structure of as prepared CeO2@PPy core-shell and FT-IR was used to identify the functional groups. The uniform sized core of PPy and shell of CeO2 were observed by transition electron microscopy. The ultrasonic assisted synthesized CeO2@PPy core-shell exhibits a narrow bandgap (UV-DRS) and good reduction efficiency with higher reusability and stability compared to pure CeO2, PPy and mechanical mixing of CeO2@PPy. Moreover, the synergistic effect of CeO2 and PPy core-shell structure facilitate a higher electron transfer rate and prolong lifetime of photogenerated electron-hole pairs which can achieve good reduction rate of 98.6% within 30 min. In particular, the pH, catalyst, and Cr6+ concentration effects were optimized in photocatalytic reduction reactions. Meanwhile, this photocatalysis with fast and effective electron transfer mechanism for the Cr6+ reduction was elucidated. This method opens a new window for simple fabrication of conducting polymers-based metal oxide nanocomposite towards wastewater remediation and beyond.
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Affiliation(s)
- Vellaichamy Balakumar
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Hyungjoo Kim
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Ramalingam Manivannan
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Hyorim Kim
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Ji Won Ryu
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Gisu Heo
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
| | - Young-A Son
- Department of Advanced Organic Materials Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea.
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Balram D, Lian KY, Sebastian N. Ecofriendly synthesized reduced graphene oxide embellished marsh marigold-like zinc oxide nanocomposite based on ultrasonication technique for the sensitive detection of environmental pollutant hydroquinone. ULTRASONICS SONOCHEMISTRY 2019; 58:104650. [PMID: 31450365 DOI: 10.1016/j.ultsonch.2019.104650] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/17/2019] [Accepted: 06/17/2019] [Indexed: 06/10/2023]
Abstract
A novel electrochemical sensor using reduced graphene oxide (RGO) decorated marsh marigold-like zinc oxide (ZnO) nanocomposite for the detection of hydroquinone (HQ) is detailed in this paper. We have adopted an ecofriendly preparation procedure for the synthesis of RGO and the synthesis of marsh marigold-like ZnO is carried out using aqueous solution method. The RGO/ZnO nanocomposite is prepared based on ultrasonication technique using a high-intensity ultrasonic bath DC200H (200 W/cm2, 40 kHz) and is followed by its precise fabrication on glassy carbon electrode (GCE). Characterizations including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, and UV visible spectroscopy of ZnO nanoparticles, RGO, and RGO/ZnO nanocomposite are analyzed in this work. Different electrochemical studies were performed in this work to investigate performance of the proposed electrochemical sensor and cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques are used to achieve this. The oxidation and reduction peak currents of RGO/ZnO modified GCE exhibited sharp peaks at very low potential of 0.13 V and 0.06 V respectively. We have obtained a high sensitivity of 8.08 μA μM-1 cm-2, ultra-low limit of detection (LOD) value of 0.01 μM, and a broad linear range of 0.1-92 μM for the proposed sensor. Moreover, the fabricated sensor exhibited excellent selectivity, good reproducibility, stability, and repeatability revealing the high efficiency of the proposed sensor. Furthermore, experiments were conducted to examine the practical feasibility of the developed sensor. The electrochemical studies conducted as part of the work shows that RGO/ZnO nanocomposite is an apt material for the highly sensitive and efficient detection of HQ.
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Affiliation(s)
- Deepak Balram
- Department of Electrical Engineering, National Taipei University of Technology, No. 1, Section 3, Zhongxiao East Road, Taipei 106, Taiwan, Republic of China
| | - Kuang-Yow Lian
- Department of Electrical Engineering, National Taipei University of Technology, No. 1, Section 3, Zhongxiao East Road, Taipei 106, Taiwan, Republic of China.
| | - Neethu Sebastian
- Department of Organic and Polymeric Materials, National Taipei University of Technology, No. 1, Section 3, Zhongxiao East Road, Taipei 106, Taiwan, Republic of China
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Mousavi-Kamazani M, Azizi F. Facile sonochemical synthesis of Cu doped CeO 2 nanostructures as a novel dual-functional photocatalytic adsorbent. ULTRASONICS SONOCHEMISTRY 2019; 58:104695. [PMID: 31450315 DOI: 10.1016/j.ultsonch.2019.104695] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
In this paper, doped CeO2 nanostructures with various percentages of copper were synthesized via a simple sonochemical method. Sonication was conducted using a high-intensity ultrasonic probe operating at 20 kHz with a maximum power output of 80 Wcm-3. The effects of different parameters such as ultrasonic time and power, solvent, and OH- source on the morphology of final products were well investigated. XRD, EDS, XPS, SEM, TEM, and DRS analyzes were utilized for precise identification of as-synthesized samples. Then, the adsorption capability in the dark and photocatalytic activity of nanostructures under visible light were evaluated for methyl orange degradation. The results showed that doped samples have a very favorable adsorption in the dark and 5 wt% Cu/CeO2 with flower-like morphology can adsorb more than 99% of the color at 45 min. Also, photocatalytic activity under visible light showed a degradation of more than 81% and 99% for samples 2 wt% Cu/CeO2 and 5 wt% Cu/CeO2, respectively, after 45 min.
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Affiliation(s)
| | - Farshid Azizi
- New Technology Faculty, Semnan University, Semnan, Iran
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Mousavi-Kamazani M. Facile sonochemical-assisted synthesis of Cu/ZnO/Al 2O 3 nanocomposites under vacuum: Optical and photocatalytic studies. ULTRASONICS SONOCHEMISTRY 2019; 58:104636. [PMID: 31450299 DOI: 10.1016/j.ultsonch.2019.104636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 06/03/2019] [Accepted: 06/10/2019] [Indexed: 06/10/2023]
Abstract
This paper reports on the synthesis of Cu/ZnO/Al2O3 nanocomposites via a facile sonochemical-assisted approach using new starting reactants. This study was conducted to synthesis and photocatalytic evaluation of the Cu/ZnO/Al2O3 nanocomposite in vacuum conditions. The XRD results showed that Cu/ZnO/Al2O3 and CuO/ZnO/Al2O3 nanocomposites could be obtained after annealing at 600 °C for 3 h in vacuum conditions and in the air, respectively. The effects of Cu:Zn:Al ratio, ultrasonic irradiation, power, time, and capping agent on the product composition and morphology were also studied. Finally, the efficiency of various as-synthesized Cu/ZnO/Al2O3 nanocomposites for decolorization of methylene blue were evaluated. According to the results, using ultrasonic irradiation and annealing under vacuum, the efficiency is improved up to 100%. Because in this situation Cu/Cu2O/ZnO/Al2O3 is formed, which has a better absorption (due to Cu2O) and conductivity (due to Cu) than CuO/ZnO/Al2O3 for the photocatalysis process.
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Oh WC, Nguyen DCT, Ullah K, Zhu L, Areerob Y. Fabrication of CdO–graphene embedded mesoporous TiO 2 composite for the visible-light response and its organic dye remediation. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1602648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Won-Chun Oh
- College of Materials Science and Engineering, Anhui University of Science & Technology, Huainan, PR China
- Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungcheongnam-do, South Korea
| | - Dinh Cung Tien Nguyen
- Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungcheongnam-do, South Korea
| | - Kefayat Ullah
- Department of Applied Physical and Material Sciences, University of Swat, Mingora, Pakistan
| | - Lei Zhu
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, China
| | - Yonrapach Areerob
- Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungcheongnam-do, South Korea
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Dehghan S, Jafari AJ, FarzadKia M, Esrafili A, Kalantary RR. Visible-light-driven photocatalytic degradation of Metalaxyl by reduced graphene oxide/Fe3O4/ZnO ternary nanohybrid: Influential factors, mechanism and toxicity bioassay. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.01.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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