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Photoreduction of CCl3F in aqueous solutions containing sulfonated poly(ether etherketone) and formate buffers. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03887-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Islam MS, Duin EC, Slaten BL, Mills G. Photoreduction of CHCl 3 in Aqueous SPEEK/HCO 2– Solutions Involving Free Radicals. J Phys Chem A 2018; 122:7118-7130. [DOI: 10.1021/acs.jpca.8b05809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. S. Islam
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Evert C. Duin
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - B. L. Slaten
- Department of Consumer and Design Sciences, Auburn University, Auburn, Alabama 36849, United States
| | - G. Mills
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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Black JR, Islam MS, Carmichael HL, Slaten BL, Little BK, Mills G. Radical Chain Reduction of CCl 4 Initiated by Illumination of SPEEK Solutions. J Phys Chem A 2017; 121:3918-3928. [DOI: 10.1021/acs.jpca.7b00240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. R. Black
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
| | - M. S. Islam
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
| | - H. L. Carmichael
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
| | - B. L. Slaten
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
| | - Brian K. Little
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
| | - G. Mills
- Department
of Chemistry and Biochemistry and ‡Department of Consumer and Design
Sciences, Auburn University, Auburn Alabama 36849
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Huang X, Peng L, Gu FL, Zhang R. Theoretical study on catalyzed selective photoreduction mechanism for 4-bromobenzaldehyde in two different solvents. Phys Chem Chem Phys 2015; 17:19997-20005. [DOI: 10.1039/c5cp03422a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Photoreduction of 4-bromobenzaldehyde is selective in different solvents. Both photoelectrons and alcohol radicals play important roles in this reaction.
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Affiliation(s)
- Xiao Huang
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
| | - Liang Peng
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
| | - Feng Long Gu
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou
| | - Ruiqin Zhang
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR
- China
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Fighting global warming: The potential of photocatalysis against CO2, CH4, N2O, CFCs, tropospheric O3, BC and other major contributors to climate change. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2011. [DOI: 10.1016/j.jphotochemrev.2011.05.002] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Winkelmann K, Calhoun RL, Mills G. Chain Photoreduction of CCl3F in TiO2 Suspensions: Enhancement Induced by O2. J Phys Chem A 2006; 110:13827-35. [PMID: 17181340 DOI: 10.1021/jp0648893] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Trichlorofluoromethane (CFC 11) was photoreduced in aqueous suspensions of TiO2 particles containing HCO2- ions and air. Dissolved O2 inhibited the reaction during an induction period that preceded the rapid formation of chloride ions. Reaction rates were higher in systems containing O2 as compared to analogous reactions that occurred in anaerobic suspensions. High photonic efficiencies of Cl- formation (> or =15) were achieved using suspensions with pH > or = 5. As was the case for studies with air-free suspensions, reactions are best described using a photoinitiated chain mechanism that produced CHCl2F and Cl- during the propagation steps. The enhanced yields obtained in the presence of air are attributed to the removal by O2 of electrons trapped in the oxide, which are converted first into H2O2 and then into reducing radicals that participate in the chain process. Enhanced yields of Freon photoreduction were also observed during illumination of air-free suspensions containing hydrogen peroxide, which were interpreted using a similar mechanism.
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Affiliation(s)
- Kurt Winkelmann
- Department of Chemistry, Florida Institute of Technology, Melbourne, FL 32901, USA.
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Cozzoli PD, Fanizza E, Comparelli R, Curri ML, Agostiano A, Laub D. Role of Metal Nanoparticles in TiO2/Ag Nanocomposite-Based Microheterogeneous Photocatalysis. J Phys Chem B 2004. [DOI: 10.1021/jp0379751] [Citation(s) in RCA: 176] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Davide Cozzoli
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy, and CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - Elisabetta Fanizza
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy, and CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - Roberto Comparelli
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy, and CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - M. Lucia Curri
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy, and CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - Angela Agostiano
- Dipartimento di Chimica, Università di Bari, Via Orabona 4, 70126 Bari, Italy, and CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari, Italy
| | - Danièle Laub
- EPFL-CIME-Centre Interdisciplinaire de Microscopie Electronique, Batiment MXC, 1015 Lausanne, Switzerland
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