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Enhanced Visible Light Active WO 3 Thin Films Toward Air Purification: Effect of the Synthesis Conditions. MATERIALS 2020; 13:ma13163506. [PMID: 32784513 PMCID: PMC7475911 DOI: 10.3390/ma13163506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 11/17/2022]
Abstract
Taking our current environmental situation in the world into consideration, people should face growing problems of air and water pollution. Heterogeneous photocatalysis is a highly promising tool to improve both air and water quality through decomposition/mineralization of contaminants directly into harmless CO2 and H2O under ambient conditions. In this contribution, we focused on the synthesis of self-assembly WO3 thin films via an electrochemical approach in the aqueous electrolyte containing fluoride ions toward air purification. The effect of preparation conditions such as applied potential (10–50 V), anodization time (15–120 min), concentration of H2SO4 (0.5–1.5 M) and NaF (0.1–1.0 wt.%) on the morphology, photocurrent response, and photocatalytic activity addressed to removal of air pollutant in the presence of as-prepared WO3 samples were thoroughly examined and presented. The results revealed the growth of nanoplatelets and their gradual transformation into flower-like structures. The oxide layers and platelet thickness of the WO3 samples were found to be proportionally related with the synthesis conditions. The photocatalytic ability toward air purification was evaluated by degradation of toluene from air mixture using low-powered LEDs as an irradiation source (λmax = 415 nm). The highest photoactivity was achieved in presence of the sample which possessed a well-ordered, regular shape and repeatable distribution of flower buds (100% of degradation). The results have confirmed that the oxide layer thickness of the anodic WO3 significantly affected the photocatalytic activity, which increased with the increasing thickness of WO3 (to 1.05 μm) and then had a downward trend. The photocurrent response evidenced that the well-organized sample had the highest ability in photocurrent generation under UV-Vis and Vis irradiation. Finally, a possible growth mechanism of WO3 NFs was also discussed.
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Zhou G, Zhao T, Qian R, Xia X, Dai S, Alsaedi A, Hayat T, Pan JH. Decorating (001) dominant anatase TiO2 nanoflakes array with uniform WO3 clusters for enhanced photoelectrochemical water decontamination. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kotrla T, Paušová Š, Zlámal M, Neumann-Spallart M, Krýsa J. Preparation of Sn-doped semiconducting Fe2O3 (hematite) layers by aerosol pyrolysis. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.09.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dzik P, Veselý M, Pachovská M, Neumann-Spallart M. All-printed planar photoelectrochemical cells with digitated cathodes for the oxidation of diluted aqueous pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12547-12555. [PMID: 27638801 DOI: 10.1007/s11356-016-7385-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/03/2016] [Indexed: 06/06/2023]
Abstract
A novel outline of a planar photoelectrochemical cell consisting of a semiconductor layer topped by subsequent layers of a digitated insulator and counter electrode is introduced. The use of vertically separated electrodes represents a major development in reducing the footprint (inactive areas) of planar electrochemical cells. The cells, consisting of a nanoparticular titania photoanode and a digitated, metallic cathode, were fabricated by a strictly additive process employing material printing as the exclusive deposition and patterning tool. Transparent conductive oxide-coated glass and polyethyleneterepthalate sheets were used as substrates; nanocrystalline titania dispersion bonded by a novel organosilica binder was used for the fabrication of the photoanode and gold or carbon inks for the fabrication of the digitated cathodes. Due to the digitated shaping of the cathode, photoelectrochemical response was not suffering from iR drop down to low electrolyte ionic strengths. The printed cells were used for electroassisted photocatalytic degradation experiments with aqueous solutions of coumarin. Considerable acceleration of the coumarin degradation rate compared to the plain photocatalytic mode was observed.
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Affiliation(s)
- Petr Dzik
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic.
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, 616 00, Brno, Czech Republic.
| | - Michal Veselý
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, 616 00, Brno, Czech Republic
| | - Martina Pachovská
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic
| | - Michael Neumann-Spallart
- Groupe d'Étude de la Matière Condensée (GEMaC), CNRS/Université de Versailles/Université Paris-Saclay, 45, avenue des États-Unis, 78035, Versailles CEDEX, France
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Li W, Cao L, Kong X, Huang J, Yao C, Fei J, Li J. In situ synthesis and photocatalytic performance of WO3/ZnWO4 composite powders. RSC Adv 2016. [DOI: 10.1039/c5ra25522h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The WO3/ZnWO4 composite powders were synthesized through an in situ reaction process with tunnel structure K10W12O41·11H2O filiform crystallites used as a precursor.
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Affiliation(s)
- Wen Li
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Liyun Cao
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Xingang Kong
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Jianfeng Huang
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Chunyan Yao
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Jie Fei
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Jiayin Li
- School of Materials Science & Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
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Dzik P, Veselý M, Blašková M, Králová M, Neumann-Spallart M. Inkjet-printed interdigitated cells for photoelectrochemical oxidation of diluted aqueous pollutants. J APPL ELECTROCHEM 2015. [DOI: 10.1007/s10800-015-0893-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Meng X, Zhang Z, Li X. Synergetic photoelectrocatalytic reactors for environmental remediation: A review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2015.07.003] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dzik P, Veselý M, Kete M, Pavlica E, Štangar UL, Neumann-Spallart M. Properties and Application Perspective of Hybrid Titania-Silica Patterns Fabricated by Inkjet Printing. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16177-16190. [PMID: 26148679 DOI: 10.1021/acsami.5b03494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A hybrid titania-silica cold-setting sol has been developed that can be deposited onto a wide variety of surfaces without the need for high-temperature fixing and that is suitable for material printing deposition. Thin hybrid titania-silica coatings were patterned onto glass and PET substrates by inkjet printing. Well-defined hybrid titania-silica patterns, with thicknesses ranging from 40 to 400 nm, were fabricated by overprinting 1 to 10 layers. Excellent mechanical, optical, and photocatalytic properties were observed, making the reported material well suited for the fabrication of transparent self-cleaning coatings both on mineral and organic substrates. The printed patterns exhibit photoelectrochemical activity that can be further improved by thermal or photonic curing. A concept of fully printed interdigitated photoelectrochemical cells on flexible PET substrates utilizing the reported hybrid photocatalyst is disclosed as well.
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Affiliation(s)
- Petr Dzik
- †Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Michal Veselý
- †Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Marko Kete
- ‡School of Environmental Sciences, University of Nova Gorica, Vipavska 13, SI-5000 Rožna dolina, Nova Gorica Slovenia
| | - Egon Pavlica
- ‡School of Environmental Sciences, University of Nova Gorica, Vipavska 13, SI-5000 Rožna dolina, Nova Gorica Slovenia
| | - Urška Lavrenčič Štangar
- ‡School of Environmental Sciences, University of Nova Gorica, Vipavska 13, SI-5000 Rožna dolina, Nova Gorica Slovenia
| | - Michael Neumann-Spallart
- §Groupe d'Étude de la Matière Condensée (GEMaC), CNRS/Université de Versailles, 45, avenue des États-Unis, 78035 Versailles CEDEX, France
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Mahadik M, Shinde S, Pathan H, Rajpure K, Bhosale C. Oxidative degradation of industrial wastewater using spray deposited TiO2/Au:Fe2O3 bilayered thin films. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 141:315-24. [DOI: 10.1016/j.jphotobiol.2014.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 11/17/2022]
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Neumann-Spallart M, Shinde S, Mahadik M, Bhosale C. Photoelectrochemical degradation of selected aromatic molecules. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Park H, Bak A, Ahn YY, Choi J, Hoffmannn MR. Photoelectrochemical performance of multi-layered BiOx-TiO2/Ti electrodes for degradation of phenol and production of molecular hydrogen in water. JOURNAL OF HAZARDOUS MATERIALS 2012; 211-212:47-54. [PMID: 21676541 DOI: 10.1016/j.jhazmat.2011.05.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/03/2011] [Accepted: 05/04/2011] [Indexed: 05/30/2023]
Abstract
Multi-layered BiO(x)-TiO(2) electrodes were used for the oxidation of chemical contaminants coupled with the production of H(2) characterized by a synergistic enhancement. The BiO(x)-TiO(2) electrodes were composed of a mixed-metal oxide array involving an under layer of TaO(x)-IrO(x), a middle layer of BiO(x)-SnO(2), and a top layer of BiO(x)-TiO(2) deposited in a series on both sides of Ti foil. Cyclic voltammograms showed that the BiO(x)-TiO(2) electrodes had an electrocatalytic activity for oxidation of phenol that was enhanced by 70% under illumination with AM 1.5 light. When the BiO(x)-TiO(2) anode was coupled with a stainless steel cathode in a Na(2)SO(4) electrolyte with phenol and irradiated with UV light at an applied DC voltage, the anodic phenol oxidation rate and the cathodic H(2) production rates were enhanced by factors of four and three, respectively, as compared to the sum of each light irradiation and direct DC electrolysis. These synergistic effects depend on the specific electrode composition and decrease on TaO(x)-IrO(x) and BiO(x)-SnO(2) anodes in the absence of a top layer of BiO(x)-TiO(2). These results indicate that the BiO(x)-TiO(2) layer functions as the key photo-electrocatalyst. The heavy doping level of Bi (25 mol%) in TiO(2) increases the electric conductivity of the parent TiO(2).
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Affiliation(s)
- Hyunwoong Park
- School of Energy Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea.
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Photocatalytic activity of sea water using TiO2 catalyst under solar light. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2011; 103:111-7. [DOI: 10.1016/j.jphotobiol.2011.02.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 01/31/2011] [Accepted: 02/02/2011] [Indexed: 11/17/2022]
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Effect of oxidisable substrates on the photoelectrocatalytic properties of thermally grown and particulate TiO2 layers. J APPL ELECTROCHEM 2007. [DOI: 10.1007/s10800-007-9415-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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