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Guimarães MG, Macedo JL, Linares JJ, Ghesti GF. Nanoparticulated WO 3/NiWO 4 Using Cellulose as a Template and Its Application as an Auxiliary Co-Catalyst to Pt for Ethanol and Glycerol Electro-Oxidation. Int J Mol Sci 2024; 25:685. [PMID: 38255761 PMCID: PMC10815037 DOI: 10.3390/ijms25020685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
This work reports the use of cellulose as a template to prepare nanosized WO3 or NiWO4 and its application as a co-catalyst in the electro-oxidation of ethanol and glycerol. Microcrystalline cellulose was hydrolyzed with phosphotungstic acid (H3PW12O40) to prepare the nanocrystalline cellulose template. The latter was air-calcinated to remove the template and obtain nanometric WO3. Tungsten oxide was impregnated with Ni(NO3)2, which was subsequently air-calcinated to obtain the nanometric NiWO4. Elemental analysis confirmed the coexistence of nickel and tungsten, whereas thermal analysis evidenced a high thermal stability for these materials. The X-ray diffractograms displayed crystal facets of WO3 and, when Ni(II) was added, NiWO4. The transmission electron micrographs corroborated the formation of nanosized particles with average particle sizes in the range of 30 to 50 nm. Finally, to apply this material, Pt/WO3-C and Pt/WO3-NiWO4-C were prepared and used in ethanol and glycerol electro-oxidation in an alkaline medium, observing a promotional effect of the oxide and tungstate by reducing the onset potential and increasing the current density. These materials show great potential to produce clean electricity or green hydrogen, contributing to energetic transition.
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Affiliation(s)
- Munique G. Guimarães
- Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energy, Institute of Chemistry, University of Brasilia, Brasilia 70910-900, DF, Brazil; (M.G.G.); (J.L.M.)
| | - Julio L. Macedo
- Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energy, Institute of Chemistry, University of Brasilia, Brasilia 70910-900, DF, Brazil; (M.G.G.); (J.L.M.)
| | - José J. Linares
- Laboratory of Chemical Processes Development, Institute of Chemistry, University of Brasilia, Brasilia 70910-900, DF, Brazil;
| | - Grace F. Ghesti
- Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energy, Institute of Chemistry, University of Brasilia, Brasilia 70910-900, DF, Brazil; (M.G.G.); (J.L.M.)
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2
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Errandonea D, Rodriguez F, Vilaplana R, Vie D, Garg S, Nayak B, Garg N, Singh J, Kanchana V, Vaitheeswaran G. Band-Gap Energy and Electronic d-d Transitions of NiWO 4 Studied under High-Pressure Conditions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:15630-15640. [PMID: 37588813 PMCID: PMC10426340 DOI: 10.1021/acs.jpcc.3c03512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/07/2023] [Indexed: 08/18/2023]
Abstract
We report an extensive study of the optical and structural properties of NiWO4 combining experiments and density functional theory calculations. We have obtained accurate information on the pressure effect on the crystal structure determining the equation of state and compressibility tensor. We have also determined the pressure dependence of the band gap finding that it decreases under compression because of the contribution of Ni 3d states to the top of the valence band. We report on the sub-band-gap optical spectrum of NiWO4 showing that the five bands observed at 0.95, 1.48, 1.70, 2.40, and 2.70 eV correspond to crystal-field transitions within the 3d8 (t2g6eg2) configuration of Ni2+. Their assignment, which remained controversial until now, has been resolved mainly by their pressure shifts. In addition to the transition energies, their pressure derivatives are different in each band, allowing a clear band assignment. To conclude, we report resistivity and Hall-effect measurements showing that NiWO4 is a p-type semiconductor with a resistivity that decreases as pressure increases.
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Affiliation(s)
- Daniel Errandonea
- Departamento
de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, Edificio de Investigación, Carrer del Dr.
Moliner 50, Burjassot, 46100 Valencia, Spain
| | - Fernando Rodriguez
- DCITIMAC,
MALTA Consolider Team, Facultad de Ciencias, Universidad de Cantabria, 39005 Santander, Spain
| | - Rosario Vilaplana
- Centro
de Tecnologías Físicas, Universitat
Politècnica de València, 46022 Valencia, Spain
| | - David Vie
- Institut
de Ciència dels Materials de la Universitat de València, Apartado de Correos 2085, E-46071 València, Spain
| | - Siddhi Garg
- High-Pressure
and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Bishnupriya Nayak
- High-Pressure
and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Nandini Garg
- High-Pressure
and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha
National Institute, Anushaktinagar, Mumbai 400094, India
| | - Jaspreet Singh
- Department
of Physics, Indian Institute of Technology
Hyderabad, Kandi, 502284 Sangareddy, Telangana, India
| | - Venkatakrishnan Kanchana
- Department
of Physics, Indian Institute of Technology
Hyderabad, Kandi, 502284 Sangareddy, Telangana, India
| | - Ganapathy Vaitheeswaran
- School
of Physics, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046 Telangana, India
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Hasan I, Albaeejan MA, Alshayiqi AA, Al-Nafaei WS, Alharthi FA. In Situ Hydrothermal Synthesis of Ni 1-xMn xWO 4 Nanoheterostructure for Enhanced Photodegradation of Methyl Orange. Molecules 2023; 28:molecules28031140. [PMID: 36770807 PMCID: PMC9920565 DOI: 10.3390/molecules28031140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
The monoclinic nanocrystalline Ni1-xMnxWO4 heterostructure has been successfully synthesized by the hydrothermal technique for achieving better sensitive and photocatalytic performances. Different characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-Vis), and photoluminescence (PL) spectroscopy have been employed to investigate their structural, microstructural, and optical properties. Mn-ion incorporation in the NiWO4 lattice reduces the particle size of the sample compared with the pure undoped NiWO4 sample, which has been confirmed from the transmission electron microscope image. The Tauc plot of the Ni1-xMnxWO4 sample exhibits a significant decrease in bandgap energy compared with the pure undoped NiWO4 sample due to the quantum confinement effect. Finally, the material was explored as a photocatalyst for the degradation of methyl orange (MO) dye from wastewater under visible light irradiation. Various reaction parameters such as pH, catalyst dose, reaction time, and kinetics of the photodegradation were studied using the batch method. The results showed that the Ni1-xMnxWO4 is highly efficient (94.51%) compared with undoped NiWO4 (65.45%). The rate of photodegradation by Ni1-xMnxWO4 (0.067) was found to be 1.06 times higher than the undoped NiWO4 (0.062).
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Affiliation(s)
- Imran Hasan
- Correspondence: (I.H.); (F.A.A.); Tel.: +966-507976713 (I.H.)
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Sales AG, Ibiapina BR, Sales GS, Filho JF, Lima AE, da Paz GL, Garcia RR, Correa A, Viana BC, Gusmão GO, Santos CC, Luz Jr GE. Heat treatment influence on structural and optical properties of NiWO4 crystals. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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5
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Ibiapina BRS, Lima AEB, Ribeiro LK, Cruz-Filho JF, Sales AGC, Ramos MAB, Sousa JA, Souza D, Gobato YG, Santos FEP, Paz GL, Luz GE. Pyrazinamide photodegradation on NiWO 4-palygorskite nanocomposites under polychromatic irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:79343-79356. [PMID: 35710963 DOI: 10.1007/s11356-022-21338-z] [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: 03/07/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
In this work, antibiotic pyrazinamide (PZA) photodegradation on palygorskite (Pal), NiWO4 crystals, and NiWO4-Pal (2, 6, and 10%) nanocomposites was evaluated under polychromatic irradiation. In the characterization of the samples, XRD patterns displayed good crystallinity for NiWO4 crystals and nanocomposites. In addition, the diffractograms were used in the Rietveld refinement for phase indexing, revealing a wolframite-type monoclinic structure with the space group P2/c. The active vibrational modes related to the characteristic groups of the samples were identified using Raman and FTIR spectroscopy. Photoluminescence (PL) spectra revealed that NiWO4 and NiWO4-Pal (2%) nanocomposite have the highest electron-hole pair recombination rate, and the contribution of the green component in the NiWO4-Pal (2%) nanocomposite indicates a greater contribution of deep energy levels to the PL profile. DRS in the UV-visible region indicated that NiWO4 crystals have indirect band-gap energy (Egap) 2.64 eV; NiWO4-Pal (2, 6, and 10%) nanocomposites have 2.62, 2.58, and 2.59 eV, respectively; and Pal has 2.83 eV. The catalytic tests showed that the NiWO4-Pal (2%) nanocomposite samples, under polychromatic radiation, exhibit greater efficiency in photodegradation at 110 min, with yield of 98.5%. The ROS tests indicated that the studied reactive species play a similar role in PZA photodegradation.
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Affiliation(s)
- Bruna R S Ibiapina
- GrEEnTeC-PPGQ-State University of Piauí - UESPI, 2231 João Cabral Street, 381, Teresina, PI, 64002-150, Brazil
| | - Aline E B Lima
- PPGQ-Department of Chemistry (DQ), Federal University of Piauí-UFPI, Teresina, PI, 64049-550, Brazil
| | - Lara K Ribeiro
- CDMF-UFSCar, Federal University of São Carlos, P.O. Box 676, São Carlos, SP, 13565-905, Brazil
| | - João F Cruz-Filho
- PPGQ-Department of Chemistry (DQ), Federal University of Piauí-UFPI, Teresina, PI, 64049-550, Brazil
| | - Ana G C Sales
- GrEEnTeC-PPGQ-State University of Piauí - UESPI, 2231 João Cabral Street, 381, Teresina, PI, 64002-150, Brazil
| | - Marcos A B Ramos
- GrEEnTeC-PPGQ-State University of Piauí - UESPI, 2231 João Cabral Street, 381, Teresina, PI, 64002-150, Brazil
| | - José A Sousa
- PPGQ-Department of Chemistry (DQ), Federal University of Piauí-UFPI, Teresina, PI, 64049-550, Brazil
| | - Daniele Souza
- Department of Physics, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Yara G Gobato
- Department of Physics, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Francisco E P Santos
- Interdisciplinary Laboratory for Advanced Materials - LIMAV, UFPI, Teresina, PI, 64049-550, Brazil
- Department of Physics, Federal University of Piauí - UFPI, Teresina, PI, 64049-550, Brazil
| | - Gizeuda L Paz
- GrEEnTeC-PPGQ-State University of Piauí - UESPI, 2231 João Cabral Street, 381, Teresina, PI, 64002-150, Brazil
| | - Geraldo E Luz
- GrEEnTeC-PPGQ-State University of Piauí - UESPI, 2231 João Cabral Street, 381, Teresina, PI, 64002-150, Brazil.
- PPGQ-Department of Chemistry (DQ), Federal University of Piauí-UFPI, Teresina, PI, 64049-550, Brazil.
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Lima AEB, Assis M, Resende ALS, Santos HLS, Mascaro LH, Longo E, Santos RS, Cavalcante LS, Luz GE. CuWO4|MnWO4 heterojunction thin film with improved photoelectrochemical and photocatalytic properties using simulated solar irradiation. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05143-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Structural characterization, morphology, optical and colorimetric properties of NiWO4 crystals synthesized by the co-precipitation and polymeric precursor methods. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128774] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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