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Wani SI, Ganie AS. Ag2O incorporated ZnO − TiO2 nanocomposite: Ionic conductivity and photocatalytic degradation of an organic dye. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Neves NSCS, Barbosa AA, Santana ILS, Pereira PMN, Pacheco JGA, Benachour M, Rocha ORS. Treatment of bicomponent textile dyes using combined photocatalysis and adsorption process made from residue-based reactor and adsorbent material. CHEM ENG COMMUN 2020. [DOI: 10.1080/00986445.2020.1798935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Naiana S. C. S. Neves
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - Ada A. Barbosa
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | | | - Pedro Manoel N. Pereira
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - Jose Geraldo A. Pacheco
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - Mohand Benachour
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
| | - Otidene R. S. Rocha
- Department of Chemical Engineering, Universidade Federal de Pernambuco (UFPE), Recife, Brazil
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Davodi B, Jahangiri M, Ghorbani M. The lead removal from aqueous solution by magnetic Fe 3O 4@polydopamine nanocomposite using Box–Behnken design. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2018.1539796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Behzad Davodi
- Faculty of Chemical, Petroleum and Gas Eng., Semnan University, Semnan, Iran
| | - Mansour Jahangiri
- Faculty of Chemical, Petroleum and Gas Eng., Semnan University, Semnan, Iran
| | - Mohsen Ghorbani
- Faculty of Chemical Engineering, Babol University of Technology, Babol, Iran
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Reza Moradi, Mahdi Hamidvand, Amin Ganjali. Using of TiO2/Ag2O Nanocomposite in Degradation of Acid Red 18 Dye in Photoreactor by Taguchi Experimental Design. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419060268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ag/Ag2O as a Co-Catalyst in TiO2 Photocatalysis: Effect of the Co-Catalyst/Photocatalyst Mass Ratio. Catalysts 2018. [DOI: 10.3390/catal8120647] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Mixtures and composites of Ag/Ag2O and TiO2 (P25) with varying mass ratios of Ag/Ag2O were prepared, employing two methods. Mechanical mixtures (TM) were obtained by the sonication of a suspension containing TiO2 and Ag/Ag2O. Composites (TC) were prepared by a precipitation method employing TiO2 and AgNO3. Powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed the presence of Ag(0) and Ag2O. The activity of the materials was determined employing methylene blue (MB) as the probe compound. Bleaching of MB was observed in the presence of all materials. The bleaching rate was found to increase with increasing amounts of TiO2 under UV/vis light. In contrast, the MB bleaching rate decreased with increasing TiO2 content upon visible light illumination. XRD and XPS data indicate that Ag2O acts as an electron acceptor in the light-induced reaction of MB and is transformed by reduction of Ag+, yielding Ag(0). As a second light-induced reaction, the evolution of molecular hydrogen from aqueous methanol was investigated. Significant H2 evolution rates were only determined in the presence of materials containing more than 50 mass% of TiO2. The experimental results suggest that Ag/Ag2O is not stable under the experimental conditions. Therefore, to address Ag/Ag2O as a (photo)catalytically active material does not seem appropriate.
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