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Çetinkaya S, Özcan L, Alagöz O, Palmisano L, Yurdakal S. Selective photoelectrocatalytic oxidation of 3-methylpyridine to vitamin B 3 by WO 3 decorated nanotube-structured TiO 2. Chem Commun (Camb) 2023; 59:5741-5744. [PMID: 37092602 DOI: 10.1039/d3cc01394d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Nanotube-structured TiO2 electrodes on Ti plates were formed in ethylene glycol solution by the anodic oxidation method applied for different times and calcined at 500 °C. Different amounts of WO3 were decorated on the nanotube surfaces electrochemically. The electrodes were characterized, and the effects of the nanotube length on the Ti plate, decorated WO3 amount, electrolyte concentration, applied potential, and type of radiation source on the oxidation of 3-methylpyridine were investigated, together with the product distribution/selectivity. In a photoelectrocatalytic system, the vitamin B3 yield increased significantly (ca. 17 fold) under UVA by decorating nanotube-structured TiO2 with WO3, whilst low reaction rates and no products were found under Vis irradiation, as only unselective photolytic reactions occurred. This unexpected result was clarified for the first time in the literature.
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Affiliation(s)
- Sıdıka Çetinkaya
- Kimya Bölümü, Fen-Edebiyat Fakültesi, Afyon Kocatepe Üniversitesi, Turkey.
| | - Levent Özcan
- Biyomedikal Mühendisliği Bölümü, Mühendislik Fakültesi, Afyon Kocatepe Üniversitesi, Turkey
| | - Oğuzhan Alagöz
- Kimya Mühendisliği Bölümü, Mühendislik Fakültesi, Afyon Kocatepe Üniversitesi, Turkey
| | - Leonardo Palmisano
- Università degli Studi di Palermo, Dipartimento di Ingegneria (DI), Palermo, Italy
| | - Sedat Yurdakal
- Kimya Bölümü, Fen-Edebiyat Fakültesi, Afyon Kocatepe Üniversitesi, Turkey.
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2
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VafaeiAsl M, Keshavarz I, Shemirani F, Jamshidi P. Green synthesis of a novel magnetic Fe3O4@SiO2/TiO2@WO3 nanocomposite for methylene blue removal under UV and visible light irradiations. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04963-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Nugraha MW, Zainal Abidin NH, Sambudi NS. Synthesis of tungsten oxide/ amino-functionalized sugarcane bagasse derived-carbon quantum dots (WO 3/N-CQDs) composites for methylene blue removal. CHEMOSPHERE 2021; 277:130300. [PMID: 33774232 DOI: 10.1016/j.chemosphere.2021.130300] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/07/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
In this present study, the tungsten oxide/amino-functionalized sugarcane bagasse derived-carbon quantum dots (WO3/N-CQDs) composite has successfully been prepared through a simple mixing process. The WO3 was synthesized through a precipitation method, and CQDs were amino-functionalized using ethylenedinitrilotetraacetic acid (EDTA) and ethylenediamine (EDA) through one-pot hydrothermal method. It is revealed that N-CQDs incorporation into WO3 alters the bandgap energy, crystallinity, surface area, and photoluminescence (PL) properties. The produced composites exhibit higher monoclinic WO3 crystallinity, larger surface area, lower bandgap energy and quenched photoluminescence intensity. The as-prepared WO3/N-CQDs composites exhibit better adsorption and photocatalytic degradation performance of methylene blue (MB) than the pristine WO3. It shows that the combination of N-CQDs and WO3 enhanced visible light absorption, by lowering the bandgap energy of WO3 from 2.175 to 1.495 eV. The best performance composite is WO3/N-CQDs EDA 2.5% with an efficiency of 96.86%, removal rate constant of 0.02017/min, and chemical oxidation demand (COD) removal efficiency achieved 84.61%. Moreover, the WO3/N-CQDs EDA 2.5% shows a significant photocatalytic activity even at higher MB initial concentration with 92.93% removal for 50 ppm MB. Subsequently, the composite also has good stability after a sequential 3-times cycle of degradation with 86.85% removal. The increasing photocatalytic performance is affected by the quenching effect of PL and lower bandgap energy. The lower intensity of the PL indicates the reduced charge carrier recombination resulting in increased photocatalytic activity. The combination of N-CQDs and WO3 resulted in improved photodegradation, which shows its significant potential to be utilized for wastewater treatment.
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Affiliation(s)
- Muhammad Wahyu Nugraha
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia
| | - Nur Hafizah Zainal Abidin
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia
| | - Nonni Soraya Sambudi
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia; Centre of Urban Resource Sustainability (CUReS), Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia.
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Mohrhusen L, Kräuter J, Al-Shamery K. Conversion of methanol on rutile TiO 2(110) and tungsten oxide clusters: 2. The role of defects and electron transfer in bifunctional oxidic photocatalysts. Phys Chem Chem Phys 2021; 23:12148-12157. [PMID: 34018509 DOI: 10.1039/d1cp01176f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The photochemical conversion of organic compounds on tailored transition metal oxide surfaces by UV irradiation has found wide applications ranging from the production of chemicals to the degradation of organic pollutants e.g. in waste water treatment. Here, we present a systematic surface science-based study of the UV photoconversion of methanol on a rutile TiO2(110) surface. Under the used conditions, the dominant photoreaction is the photo-oxidation forming formaldehyde, that is drastically boosted by the presence of adsorbed oxygen as well as (sub-)surface defects such as oxygen vacancies and Ti3+ interstitials. Moreover, a photostimulated and Ti3+ mediated C-C coupling was observed leading to the production of ethene. We have further deposited tungsten oxide clusters on the rutile surface and examined the impact on the methanol photochemistry. In this case, the C-C coupling can be suppressed. Surprisingly, especially for high Ti3+ contents the population of the photochemical pathway is quenched in favor of the population of the thermal reaction yielding more methane from the deoxygenation reaction. So, the common concept that long time charge separation is efficient by combining two photocatalysts with similar band gaps, but different work functions in order to enhance photochemical yields is apparently too naive for certain systems. We attribute the loss of photoproducts with tungsten oxide coadsorption to the "pinning" of Ti3+ centers and a related enhancement of electron density near the oxide clusters which makes a concomitant recombination of the photochemical relevant holes with the excess surface electrons more likely.
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Affiliation(s)
- Lars Mohrhusen
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky Strasse 9-11, D-26129 Oldenburg, Germany.
| | - Jessica Kräuter
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky Strasse 9-11, D-26129 Oldenburg, Germany.
| | - Katharina Al-Shamery
- Institute of Chemistry, Carl von Ossietzky University of Oldenburg, Carl-von-Ossietzky Strasse 9-11, D-26129 Oldenburg, Germany.
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5
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Preparation of Propanols by Glycerol Hydrogenolysis over Bifunctional Nickel-Containing Catalysts. Molecules 2021; 26:molecules26061565. [PMID: 33809129 PMCID: PMC8001030 DOI: 10.3390/molecules26061565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 12/02/2022] Open
Abstract
The paper presents the results obtained in studying glycerol hydrogenolysis into 1-propanol and 2-propanol over bifunctional Ni/WO3-TiO2 and Ni/WO3-ZrO2 catalysts in the flow system. Due to the optimal combination of acidic and hydrogenation properties of the heterogeneous catalysts, they exhibit higher performance in glycerol conversion into C3 alcohols, although the process is carried out in rather mild conditions. At the reaction temperature of 250 °C and hydrogen pressure of 3 MPa, the total yield of 1-propanol and 2-propanol reaches 95%, and the glycerol conversion is close to 100%.
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Photocatalytic properties of SnO2/MoO3 mixed oxides and their relation to the electronic properties and surface acidity. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Preparation of WO3-modified TiO2 thin film by peroxo sol–gel method and its photocatalytic activity in degradation of methylene blue. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04225-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Camposeco R, Castillo S, Hinojosa-Reyes M, Mejía-Centeno I, Zanella R. Surface Acidity, Adsorption Capacity, and Photocatalytic Activity of SiO2 Supported on TiO2 Nanotubes for Rhodamine B Degradation. Top Catal 2020. [DOI: 10.1007/s11244-020-01339-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Garcia AP, Guaglianoni WC, Garcia DR, Soares LG, de Oliveira Vaz M, Teixeira SR, Pereira MB, Basegio TM, Clemens FJ, Alves AK, Rodembusch FS, Bergmann CP. Facile Synthesis by Peroxide Method and Microwave-Assisted Hydrothermal Treatment of TiO2
with High Photocatalytic Efficiency for Dye Degradation and Hydrogen Production. ChemistrySelect 2018. [DOI: 10.1002/slct.201802188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ana Paula Garcia
- Universidade Federal do Pampa; UNIPAMPA; Campus Alegrete Alegrete 97546-550; Brazil
- Laboratório de Materiais Cerâmicos/UFRGS; Porto Alegre 90035-190 Brazil
- Laboratory for High Performance Ceramics/EMPA; Dübendorf 8600 Switzerland
| | | | - Danielle Rodrigues Garcia
- Laboratório de Modelagem Molecular Aplicada à Defesa Química e Biológica/LMDQB-IME; Rio de Janeiro 22290-270 Brazil
| | - Luana Goés Soares
- Laboratório de Materiais Cerâmicos/UFRGS; Porto Alegre 90035-190 Brazil
| | | | | | | | | | - Frank Jörg Clemens
- Laboratory for High Performance Ceramics/EMPA; Dübendorf 8600 Switzerland
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Mendoza JA, Lee DH, Kang JH. Photocatalytic removal of gaseous nitrogen oxides using WO 3/TiO 2 particles under visible light irradiation: Effect of surface modification. CHEMOSPHERE 2017; 182:539-546. [PMID: 28521170 DOI: 10.1016/j.chemosphere.2017.05.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 06/07/2023]
Abstract
Photocatalytic nanoparticles have been receiving considerable attention for their potential use in many environmental management applications, including urban air quality control. This paper investigates the performance of surface modified WO3/TiO2 composite particles in removing gaseous nitrogen oxides (NOx) under visible light irradiation. The WO3/TiO2 composite particles were synthesized using a modified wet chemical method with different concentrations of NaOH solution used as a surface modification agent for the host TiO2 particles. The NOx removal efficiency of the WO3/TiO2 particles was evaluated using a lab-scale continuous gas flow photo-reactor with a gas contact time of 1 min. Results showed that surface modification using NaOH can enhance the photocatalytic activity of the WO3/TiO2 particles. The NOx removal efficiency of the surface modified WO3/TiO2 was greater than 90%, while that of WO3/TiO2 particles prepared by the conventional wet chemical method was ∼75%. The enhanced removal efficiency might be attributed to the formation of oxygen vacancies on the TiO2 surface, providing sites for WO3 particles to effectively bind with TiO2. However, excess amount of NaOH >3 M deteriorated the photocatalytic performance due to the increased agglomeration of the host TiO2 particles.
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Affiliation(s)
- Joseph Albert Mendoza
- Department of Civil and Environmental Engineering, Dongguk University - Seoul, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea
| | - Dong Hoon Lee
- Department of Civil and Environmental Engineering, Dongguk University - Seoul, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea
| | - Joo-Hyon Kang
- Department of Civil and Environmental Engineering, Dongguk University - Seoul, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea.
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Dominguez S, Huebra M, Han C, Campo P, Nadagouda MN, Rivero MJ, Ortiz I, Dionysiou DD. Magnetically recoverable TiO 2-WO 3 photocatalyst to oxidize bisphenol A from model wastewater under simulated solar light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12589-12598. [PMID: 27677989 DOI: 10.1007/s11356-016-7564-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
A novel magnetically recoverable, visible light active TiO2-WO3 composite (Fe3O4@SiO2@TiO2-WO3) was prepared to enable the photocatalyst recovery after the degradation of bisphenol A (BPA) under simulated solar light. For comparison, the photocatalytic activity of other materials such as non-magnetic TiO2-WO3, Fe3O4@SiO2@TiO2, TiO2, and the commercial TiO2 P25 was also evaluated under the studied experimental conditions. The structure and morphology of the synthesized materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and electron dispersion spectroscopy (EDS). Moreover, Brunauer-Emmett-Teller (BET) surface area and magnetic properties of the samples were determined. The Fe3O4@SiO2@TiO2-WO3 and TiO2-WO3 led to a BPA degradation of 17.50 and 27.92 %, respectively, after 2 h of the simulated solar light irradiation. Even though their activity was lower than that of P25, which degraded completely BPA after 1 h, our catalysts were magnetically separable for their further reuse in the treatment. Furthermore, the influence of the water matrix in the photocatalytic activity of the samples was studied in municipal wastewater. Finally, the identification of reaction intermediates was performed and a possible BPA degradation pathway was proposed to provide a better understanding of the degradation process. Graphical abstract ᅟ.
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Affiliation(s)
- S Dominguez
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005, Santander, Spain
| | - M Huebra
- Dpto Química Analítica, Universidad País Vasco, 48080, Bilbao, Spain
| | - C Han
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH, 45221-0012, USA
| | - P Campo
- Cranfield Water Science Institute, Cranfield University, Cranfield, Beds, MK43 0AL, UK
| | - M N Nadagouda
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH, 45324, USA
| | - M J Rivero
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005, Santander, Spain
| | - I Ortiz
- Department of Chemical and Biomolecular Engineering, University of Cantabria, 39005, Santander, Spain.
| | - D D Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH, 45221-0012, USA
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