1
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Luo J, Feng C, Fan C, Tang L, Liu Y, Gong Z, Wu T, Zhen X, Feng H, Yan M, Wang L, Xu L. Enhanced indirect attack behavior of 1O2 for photocatalytic H2O2 production: Possible synergistic regulation of spin polarization and water bridge on photocatalytic reaction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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2
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Jaryal A, Venugopala Rao B, Kailasam K. A Light(er) Approach for the Selective Hydrogenation of 5-Hydroxymethylfurfural to 2,5-Bis(hydroxymethyl)furan without External H 2. CHEMSUSCHEM 2022; 15:e202200430. [PMID: 35451567 DOI: 10.1002/cssc.202200430] [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: 02/28/2022] [Revised: 04/04/2022] [Indexed: 06/14/2023]
Abstract
The selective conversion of 5-hydroxymethyfurfural (HMF), a biomass-derived platform molecule, to value added chemicals can ease the burden on petroleum-based fine chemical synthesis. The active contribution of renewable energy sources along with low cost, environmental friendliness, and a simple reaction system must be adopted for better sustainability. In this context, photocatalytic selective hydrogenation of HMF to 2,5-bis(hydroxymethyl)furan (BHMF) was achieved over P25 titania nanoparticles without chemical squander. Simultaneously the photo-oxidation of p-methoxybenzyl alcohol (MeOBA) to p-methoxybenzaldehyde (MeOBaL), similar to biomass-derived vanillin, was carried out, abolishing the need of additional redox reagents. This system put forward the competent employment of photogenerated excitons for the valorization of lignocellulosic biomass to fine chemicals, which is an urgent requirement for sustainable chemical synthesis.
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Affiliation(s)
- Arpna Jaryal
- Advanced Functional Nanomaterials, Institute of Nano Science and Technology, Mohali, Sector 81, Mohali, 140306, India
| | - Battula Venugopala Rao
- Advanced Functional Nanomaterials, Institute of Nano Science and Technology, Mohali, Sector 81, Mohali, 140306, India
| | - Kamalakannan Kailasam
- Advanced Functional Nanomaterials, Institute of Nano Science and Technology, Mohali, Sector 81, Mohali, 140306, India
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3
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Luo J, Liu Y, Fan C, Tang L, Yang S, Liu M, Wang M, Feng C, Ouyang X, Wang L, Xu L, Wang J, Yan M. Direct Attack and Indirect Transfer Mechanisms Dominated by Reactive Oxygen Species for Photocatalytic H 2O 2 Production on g-C 3N 4 Possessing Nitrogen Vacancies. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03103] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jun Luo
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Yani Liu
- Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences, Changsha 410004, China
| | - Changzheng Fan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Shuaijun Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Milan Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Mier Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Chengyang Feng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Xilian Ouyang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Lingling Wang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Liang Xu
- Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Jiajia Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Ming Yan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
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4
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Denisov N, Yoo J, Schmuki P. Effect of different hole scavengers on the photoelectrochemical properties and photocatalytic hydrogen evolution performance of pristine and Pt-decorated TiO2 nanotubes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.173] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Lin J, Sun T, Li M, Yang J, Shen J, Zhang Z, Wang Y, Zhang X, Wang X. More efficiently enhancing photocatalytic activity by embedding Pt within anatase–rutile TiO2 heterophase junction than exposing Pt on the outside surface. J Catal 2019. [DOI: 10.1016/j.jcat.2019.02.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Mohajernia S, Hejazi S, Andryskova P, Zoppellaro G, Tomanec O, Zboril R, Schmuki P. Conductive Cu‐Doped TiO
2
Nanotubes for Enhanced Photoelectrochemical Methanol Oxidation and Concomitant Hydrogen Generation. ChemElectroChem 2019. [DOI: 10.1002/celc.201900076] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shiva Mohajernia
- Institute for Surface Science and CorrosionDepartment of Materials Science, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
| | - Seyedsina Hejazi
- Institute for Surface Science and CorrosionDepartment of Materials Science, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
| | - Pavlina Andryskova
- Regional Centre of Advanced Technologies and MaterialsFaculty of Science, Palacký University Olomouc Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Giorgio Zoppellaro
- Regional Centre of Advanced Technologies and MaterialsFaculty of Science, Palacký University Olomouc Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Ondrej Tomanec
- Regional Centre of Advanced Technologies and MaterialsFaculty of Science, Palacký University Olomouc Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Radek Zboril
- Regional Centre of Advanced Technologies and MaterialsFaculty of Science, Palacký University Olomouc Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Patrik Schmuki
- Institute for Surface Science and CorrosionDepartment of Materials Science, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
- Regional Centre of Advanced Technologies and MaterialsFaculty of Science, Palacký University Olomouc Šlechtitelů 27 78371 Olomouc Czech Republic
- Department of ChemistryKing Abdulaziz University Jeddah Saudi Arabia
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7
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Walenta CA, Kollmannsberger SL, Courtois C, Pereira RN, Stutzmann M, Tschurl M, Heiz U. Why co-catalyst-loaded rutile facilitates photocatalytic hydrogen evolution. Phys Chem Chem Phys 2019; 21:1491-1496. [DOI: 10.1039/c8cp05513k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photocatalytic H2 evolution on co-catalyst loaded titania is interpreted by a new mechanism, in which the co-catalyst acts as a recombination center for hydrogen and not as a reduction site of a photoreaction.
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Affiliation(s)
- Constantin A. Walenta
- Chair of Physical Chemistry
- Department of Chemistry & Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
| | - Sebastian L. Kollmannsberger
- Chair of Physical Chemistry
- Department of Chemistry & Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
| | - Carla Courtois
- Chair of Physical Chemistry
- Department of Chemistry & Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
| | - Rui N. Pereira
- Walter Schottky Institute and Physics Department
- Technische Universität München
- 85748 Garching
- Germany
| | - Martin Stutzmann
- Nanosystems Initiative Munich
- 80799 München
- Germany
- Walter Schottky Institute and Physics Department
- Technische Universität München
| | - Martin Tschurl
- Chair of Physical Chemistry
- Department of Chemistry & Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
| | - Ueli Heiz
- Chair of Physical Chemistry
- Department of Chemistry & Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
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8
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Chen WT, Chan A, Sun-Waterhouse D, Llorca J, Idriss H, Waterhouse GI. Performance comparison of Ni/TiO2 and Au/TiO2 photocatalysts for H2 production in different alcohol-water mixtures. J Catal 2018. [DOI: 10.1016/j.jcat.2018.08.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Lee SL, Ho LN, Ong SA, Wong YS, Voon CH, Khalik WF, Yusoff NA, Nordin N. Role of dissolved oxygen on the degradation mechanism of Reactive Green 19 and electricity generation in photocatalytic fuel cell. CHEMOSPHERE 2018; 194:675-681. [PMID: 29247929 DOI: 10.1016/j.chemosphere.2017.11.166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/27/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
In this study, a membraneless photocatalytic fuel cell with zinc oxide loaded carbon photoanode and platinum loaded carbon cathode was constructed to investigate the impact of dissolved oxygen on the mechanism of dye degradation and electricity generation of photocatalytic fuel cell. The photocatalytic fuel cell with high and low aeration rate, no aeration and nitrogen purged were investigated, respectively. The degradation rate of diazo dye Reactive Green 19 and the electricity generation was enhanced in photocatalytic fuel cell with higher dissolved oxygen concentration. However, the photocatalytic fuel cell was still able to perform 37% of decolorization in a slow rate (k = 0.033 h-1) under extremely low dissolved oxygen concentration (approximately 0.2 mg L-1) when nitrogen gas was introduced into the fuel cell throughout the 8 h. However, the change of the UV-Vis spectrum indicates that the intermediates of the dye could not be mineralized under insufficient dissolved oxygen level. In the aspect of electricity generation, the maximum short circuit current (0.0041 mA cm-2) and power density (0.00028 mW cm-2) of the air purged photocatalytic fuel cell was obviously higher than that with nitrogen purging (0.0015 mA cm-2 and 0.00008 mW cm-2).
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Affiliation(s)
- Sin-Li Lee
- School of Materials Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Li-Ngee Ho
- School of Materials Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
| | - Soon-An Ong
- Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Yee-Shian Wong
- Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Chun-Hong Voon
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, 01000 Kangar, Perlis, Malaysia
| | - Wan Fadhilah Khalik
- Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Nik Athirah Yusoff
- Water Research Group (WAREG), School of Environmental Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Noradiba Nordin
- School of Materials Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
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10
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Raptis D, Dracopoulos V, Lianos P. Renewable energy production by photoelectrochemical oxidation of organic wastes using WO 3 photoanodes. JOURNAL OF HAZARDOUS MATERIALS 2017; 333:259-264. [PMID: 28363147 DOI: 10.1016/j.jhazmat.2017.03.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/16/2017] [Accepted: 03/21/2017] [Indexed: 06/07/2023]
Abstract
The present work has studied renewable hydrogen production by photoelectrocatalytic degradation of model organic substances representing biomass derived organic wastes. Its purpose was to show that renewable energy can be produced by consuming wastes. The study has been carried out by employing nanoparticulate WO3 photoanodes in the presence of ethanol, glycerol or sorbitol, i.e. three substances which are among typical biomass products. In these substances, the molecular weight and the number of hydroxyl groups increases from ethanol to sorbitol. The photocurrent produced by the cell was the highest in the presence of ethanol, smaller in the case of glycerol and further decreased in the presence of sorbitol. The photocurrent was roughly the double of that produced in the absence of an organic additive thus demonstrating current doubling phenomena. Hydrogen was produced only under illumination and was monitored at two forward bias, 0.8 and 1.6V vs Ag/AgCl. Hydrogen production rates followed the same order as the photocurrent thus indicating that hydrogen production by reduction of protons mainly depends on the current flowing through the external circuit connecting photoanode with cathode. The maximum solar-to-hydrogen efficiency reached by the present system was 2.35%.
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Affiliation(s)
- Dimitrios Raptis
- Department of Chemical Engineering, University of Patras, 26500 Patras, Greece
| | | | - Panagiotis Lianos
- Department of Chemical Engineering, University of Patras, 26500 Patras, Greece.
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11
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Li H, Qin F, Yang Z, Cui X, Wang J, Zhang L. New Reaction Pathway Induced by Plasmon for Selective Benzyl Alcohol Oxidation on BiOCl Possessing Oxygen Vacancies. J Am Chem Soc 2017; 139:3513-3521. [DOI: 10.1021/jacs.6b12850] [Citation(s) in RCA: 540] [Impact Index Per Article: 77.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hao Li
- Department
of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
- Key
Laboratory of Pesticide and Chemical Biology of Ministry of Education,
Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Feng Qin
- Department
of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Zhiping Yang
- Key
Laboratory of Pesticide and Chemical Biology of Ministry of Education,
Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Ximin Cui
- Department
of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department
of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Lizhi Zhang
- Key
Laboratory of Pesticide and Chemical Biology of Ministry of Education,
Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
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12
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Unravelling Site-Specific Photo-Reactions of Ethanol on Rutile TiO2(110). Sci Rep 2016; 6:21990. [PMID: 26915303 PMCID: PMC4768110 DOI: 10.1038/srep21990] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/04/2016] [Indexed: 12/31/2022] Open
Abstract
Finding the active sites of catalysts and photo-catalysts is crucial for an improved fundamental understanding and the development of efficient catalytic systems. Here we have studied the photo-activated dehydrogenation of ethanol on reduced and oxidized rutile TiO2(110) in ultrahigh vacuum conditions. Utilizing scanning tunnelling microscopy, various spectroscopic techniques and theoretical calculations we found that the photo-reaction proceeds most efficiently when the reactants are adsorbed on regular Ti surface sites, whereas species that are strongly adsorbed at surface defects such as O vacancies and step edges show little reaction under reducing conditions. We propose that regular Ti surface sites are the most active sites in photo-reactions on TiO2.
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13
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Mancilla FJ, Rojas SF, Gualdrón-Reyes AF, Carreño-Lizcano MI, Duarte LJ, Niño-Gómez ME. Improving the photoelectrocatalytic performance of boron-modified TiO2/Ti sol–gel-based electrodes for glycerol oxidation under visible illumination. RSC Adv 2016. [DOI: 10.1039/c6ra02806c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
B-TiO2 photoelectrodes showed a high photoelectrocatalytic performance under visible illumination due to efficient electron transport and charge carrier separation.
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Affiliation(s)
- Federico J. Mancilla
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
| | - Silvia F. Rojas
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
| | - Andrés F. Gualdrón-Reyes
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
| | - María I. Carreño-Lizcano
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
| | - Liseth J. Duarte
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
| | - M. E. Niño-Gómez
- Centro de Investigaciones en Catálisis – CICAT
- Universidad Industrial de Santander
- Piedecuesta
- Colombia
- Centro de Materiales y Nanociencias (CMN)
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14
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Kalamaras E, Lianos P. Current Doubling effect revisited: Current multiplication in a PhotoFuelCell. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.05.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Meng C, Yang K, Fu X, Yuan R. Photocatalytic Oxidation of Benzyl Alcohol by Homogeneous CuCl2/Solvent: A Model System to Explore the Role of Molecular Oxygen. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00644] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chao Meng
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
| | - Kai Yang
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
| | - Rusheng Yuan
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
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16
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Sun Y, Chang W, Ji H, Chen C, Ma W, Zhao J. An unexpected fluctuating reactivity for odd and even carbon numbers in the TiO2-based photocatalytic decarboxylation of C2-C6 dicarboxylic acids. Chemistry 2014; 20:1861-70. [PMID: 24402745 DOI: 10.1002/chem.201303236] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Indexed: 11/11/2022]
Abstract
The degradation behaviours of five straight-chain dicarboxylic acids (from ethanedioic acid to hexanedioic acid) were compared in aqueous TiO2-based photocatalysis. When all other conditions were identical, the degradation rates were found to fluctuate regularly with the parity of the number of carbon atoms. Dicarboxylic acids with an even number of carbon atoms (e-DAs) always degraded more slowly than those acids with an odd number of carbon atoms (o-DAs). This unusual fluctuation in the reactivity for the degradation of dicarboxylic acids by TiO2-based photocatalysis is very closely related to the different pre-coordination modes of the acids with the photocatalyst. Attenuated total reflection FTIR (ATR-FTIR) of e-DAs labelled with (13)C showed that both carboxyl groups of the acid coordinate to TiO2 through bidentate chelating forms. In contrast, only one carboxyl group of the o-DAs coordinated to TiO2 in a bidentate chelating manner, whereas the other formed a monodentate binding linkage. The bidentate chelating form with bilateral symmetric coordination did not favour degradation. Isotope-labelling experiments were performed with (18)O2 to observe the different ways in which incorporated oxygen entered the initial decarboxylated products of e- and o-DAs. For the degradation of butanedioic acid, (45.9±0.5) % of the oxygen in the formed propanedioic acid came from H2O, whereas for pentanedioic acid, (97.4±0.2) % of the oxygen in the formed butanedioic acid came from H2O. Our results demonstrate that in TiO2-based photocatalysis, the reactivity of active species, such as ·OH/h(vb)(+), is far from non-selective and that the attacks of these active species on organic substrates are significantly affected by the coordination patterns of the substrates on the TiO2 surface.
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Affiliation(s)
- Yiran Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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17
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Zhao C, Feng S, Chen W, Li X, Song Y, Cao J. Preparation of Mesoporous V2O5@TiO2 Composites with Enhanced Photoactivity for Gaseous Benzene Degradation. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.phpro.2013.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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McHale JL. Hierarchal Light-Harvesting Aggregates and Their Potential for Solar Energy Applications. J Phys Chem Lett 2012; 3:587-97. [PMID: 26286154 DOI: 10.1021/jz3000678] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The tunable optical properties of self-assembled chromophores are exploited by photosynthetic organisms to optimize their ability to harvest a broad range of the solar spectrum. Similarly, the efficiency of solar photovoltaic and photoelectrochemical devices depends strongly on the coincidence of the absorption spectrum of the photoactive components with the spectrum of the sun. While the possibility of borrowing ideas about light-harvesting aggregates from nature in order to improve the efficiency of solar energy conversion is quite attractive, progress to date is hindered by incomplete understanding of aggregate internal structure and its relation to excitonic states. In this Perspective, we describe our recent work on the hierarchal structure of self-assembled porphyrin aggregates that are similar to light-harvesting complexes of photosynthetic bacteria. We address the question of whether aggregation can be beneficial to dye-sensitized solar energy conversion and present promising results for a solar cell based on an abundant plant pigment that displays signatures of aggregation when adsorbed on TiO2.
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Affiliation(s)
- Jeanne L McHale
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
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19
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Lianos P. Production of electricity and hydrogen by photocatalytic degradation of organic wastes in a photoelectrochemical cell: the concept of the Photofuelcell: a review of a re-emerging research field. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:575-590. [PMID: 21111532 DOI: 10.1016/j.jhazmat.2010.10.083] [Citation(s) in RCA: 159] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/19/2010] [Accepted: 10/21/2010] [Indexed: 05/30/2023]
Abstract
The present review aims to give to a researcher who has no experience with Photofuelcells all necessary basic knowledge to join the field without much trouble and to give to an experienced researcher a handy manual of reference. The author has dealt with the principal matters related with the design of a photoelectrochemical cell and the factors that affect efficient production of electricity by photocatalytic degradation of (principally) organic and (secondarily) inorganic waste materials. A large portion of the paper is devoted to the review of materials used for making a photoanode since most of the accomplished research is on this exact matter. The paper also briefly reviews the materials used to make the rest of the components of the cell as well as the models of cell efficiency and photodegradation procedures during cell operation.
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Affiliation(s)
- Panagiotis Lianos
- Engineering Science Deptartment, University of Patras, 26500 Patras, Greece.
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20
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Wen B, Li Y, Chen C, Ma W, Zhao J. An Unexplored O
2
‐Involved Pathway for the Decarboxylation of Saturated Carboxylic Acids by TiO
2
Photocatalysis: An Isotopic Probe Study. Chemistry 2010; 16:11859-66. [DOI: 10.1002/chem.201001704] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Wen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 108‐261‐6495
| | - Yue Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 108‐261‐6495
| | - Chuncheng Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 108‐261‐6495
| | - Wanhong Ma
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 108‐261‐6495
| | - Jincai Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 108‐261‐6495
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21
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Photoelectrochemical decomposition of bio-related compounds at a nanoporous semiconductor film photoanode and their photocurrent–photovoltage characteristics. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.01.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Zhang M, Wang Q, Chen C, Zang L, Ma W, Zhao J. Oxygen atom transfer in the photocatalytic oxidation of alcohols by TiO2: oxygen isotope studies. Angew Chem Int Ed Engl 2009; 48:6081-4. [PMID: 19343745 DOI: 10.1002/anie.200900322] [Citation(s) in RCA: 190] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Miao Zhang
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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23
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Zhang M, Wang Q, Chen C, Zang L, Ma W, Zhao J. Oxygen Atom Transfer in the Photocatalytic Oxidation of Alcohols by TiO2: Oxygen Isotope Studies. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900322] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Chang CA, Ray B, Paul DK, Demydov D, Klabunde KJ. Photocatalytic reaction of acetaldehyde over SrTiO3 nanoparticles. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2007.08.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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26
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Hirakawa T, Daimon T, Kitazawa M, Ohguri N, Koga C, Negishi N, Matsuzawa S, Nosaka Y. An approach to estimating photocatalytic activity of TiO2 suspension by monitoring dissolved oxygen and superoxide ion on decomposing organic compounds. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2007.03.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Min L, Wu XZ, Tetsuya S, Inoue H. Time-resolved chemiluminescence study of the TiO2 photocatalytic reaction and its induced active oxygen species. LUMINESCENCE 2007; 22:105-12. [PMID: 17089368 DOI: 10.1002/bio.933] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The time-resolved chemiluminescence (CL) method has been applied to study the TiO(2) photocatalytic reaction on a micros-ms timescale. The experimental set-up for time-resolved CL was improved for confirmation of the unique luminol CL induced by the photocatalytic reaction. The third harmonic light (355 nm) from an Nd:YAG laser was used for the light source of the TiO(2) photocatalytic reaction. Luminol CL induced by this reaction was detected by a photomultiplier tube (PMT) and a preamplifier was used for amplifying the CL signal. Experimental conditions affecting the photocatalytically induced CL were discussed in detail. The involvement of active oxygen species such as .OH, O(2) (.-) and H(2)O(2) in the CL was examined by adding their scavengers. It is concluded that .OH was greatly involved in the CL on a micros-ms timescale, especially in time periods <100 micros after illumination of the pulse laser. On the other hand, CL generated by O(2) (.-) began to increase after 100 micros and became dominant after 2.5 ms. A small part of the CL might be generated by H(2)O(2) on the whole micros-ms timescale. A CL reaction mechanism related with .OH and dissolved oxygen was proposed to explain the photocatalytically induced luminol CL on a micros-ms timescale, especially in periods <100 micros.
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Affiliation(s)
- Lingyue Min
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
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28
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Ferguson MA, Hoffmann MR, Hering JG. TiO2-photocatalyzed As(II) oxidation in aqueous suspensions: reaction kinetics and effects of adsorption. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2005; 39:1880-1886. [PMID: 15819251 DOI: 10.1021/es048795n] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Oxidation of arsenite, As(III), to arsenate, As(V), is required for the efficient removal of arsenic by many water treatment technologies. The photocatalyzed oxidation of As(III) on titanium dioxide, TiO2, offers an environmentally benign method for this unit operation. In this study, we explore the efficacy and mechanism of TiO2-photocatalyzed As(III) oxidation at circumneutral pH and over a range of As(III) concentrations approaching those typically encountered in water treatment systems. We focus on the effect of As adsorption on observed rates of photooxidation. Adsorption (in the dark) of both As(III) and As(V) on Degussa P25 TiO2 was examined at pH 6.3 over a range in dissolved arsenic concentrations, [As]diss, of 0.10-89 microM and 0.2 or 0.05 g L(-1) TiO2 for As(III) and As(V), respectively. Adsorption isotherms generally followed the Langmuir-Hinshelwood model with As(III) exhibiting an adsorption maxima of 32 micromol g(-1). As(V) adsorption did not reach a plateau under the experimental conditions examined; the maximum adsorbed concentration observed was 130 micromol g(-1). The extent of As(III) and As(V) adsorption observed at the beginning and end of the kinetic studies was consistent with that observed in the adsorption isotherms. Kinetic studies were performed in batch systems at pH 6.3 with 0.8-42 microM As(III) and 0.05 g L(-1) TiO2; complete oxidation of As(III) was observed within 10-60 min of irradiation at 365 nm. The observed effect of As(III) concentration on reaction kinetics was consistent with surface saturation at higher concentrations. Addition of phosphate at 0.5-10 microM had little effect on either As(III) sorption or its photooxidation rate but did inhibit adsorption of the product As(V). The selective use of hydroxyl radical quenchers and superoxide dismutase demonstrated that superoxide, O2-, plays a major role in the oxidation of As(III) to As(V).
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Affiliation(s)
- Megan A Ferguson
- Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, California 91125, USA
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29
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Cheng M, Ma W, Li J, Huang Y, Zhao J, Wen YX, Xu Y. Visible-light-assisted degradation of dye pollutants over Fe(III)-loaded resin in the presence of H2O2 at neutral pH values. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2004; 38:1569-1575. [PMID: 15046361 DOI: 10.1021/es034442x] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel catalyst was synthesized by direct exchange of ferric ions onto a cationic resin (Amberlite IRA200). Upon visible light irradiation (lambda > 420 nm) in the presence of H2O2, this catalyst was found to be highly effective for the degradation of nonbiodegradable cationic dyes, Malachite green, Rhodamine B, and Methylene blue, even at neutral pH values. It was also easy to separate from the degraded solution. By total organic carbon, FT-IR, and GC-MS analysis, the degradation process of Malachite green was shown to proceed with demethylation and phenyl ring openings into CO2 and small molecular compounds. EPR studies revealed that *OH radicals, other than *OOH/O2*-, were involved as the active species. A possible reaction mechanism is proposed on the basis of all the information obtained under various experimental conditions.
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Affiliation(s)
- Mingming Cheng
- Laboratory of Photochemistry, Center for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
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30
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A QSAR study on the kinetics of the reactions of aliphatic alcohols with the photogenerated hydroxyl radicals. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0166-1280(03)00248-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Park H, Choi W. Photoelectrochemical Investigation on Electron Transfer Mediating Behaviors of Polyoxometalate in UV-Illuminated Suspensions of TiO2 and Pt/TiO2. J Phys Chem B 2003. [DOI: 10.1021/jp027732t] [Citation(s) in RCA: 182] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyunwoong Park
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Wonyong Choi
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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