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Falara PP, Chatzikonstantinou N, Zourou A, Tsipas P, Sakellis E, Alexandratou E, Nasikas NK, Kordatos KV, Antoniadou M. Optimizing Carbon Dot-TiO 2 Nanohybrids for Enhanced Photocatalytic Hydrogen Evolution. MATERIALS (BASEL, SWITZERLAND) 2025; 18:1023. [PMID: 40077248 PMCID: PMC11901194 DOI: 10.3390/ma18051023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2025] [Revised: 02/16/2025] [Accepted: 02/24/2025] [Indexed: 03/14/2025]
Abstract
CDs/TiO2 nanohybrids were synthesized and tested for photocatalytic H2 production from aqueous media through simulated solar light-driven photocatalytic reactions. Firstly, three different types of CDs were prepared through green methods, specifically hydrothermal treatment and microwave irradiation, using citric acid and urea as precursors in varying molar ratios. After a multi-step purification procedure, impurity-free CDs were obtained. The as-synthesized CDs were thoroughly characterized using UV-Vis, FT-IR, and PL spectroscopy, along with HR-TEM. The results revealed that the size and optical and physicochemical properties of CDs can be tailored by selecting the precursors' ratio and the synthetic approach. The heterostructured CDs/TiO2 photocatalysts were formed solvothermally and were analyzed using UV-Vis/DRS, FT-IR, and XPS techniques, which confirmed the effective incorporation of CDs and the improved properties of TiO2. The use of sacrificial reagents is among the most common strategies for enhancing H2 production from water through photocatalytic processes; herein, ethanol was selected as a green liquid organic hydrogen carrier. A maximum H2 production rate of 0.906 μmol H2/min was achieved, while the recyclability study demonstrated that the photocatalyst maintained stable performance during multiple cycles of reuse. Thus, optimizing the synthesis conditions of CDs/TiO2 nanohybrids resulted in the creation of environmentally friendly and reusable photocatalysts.
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Affiliation(s)
- Pinelopi P. Falara
- School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, 15780 Athens, Greece; (P.P.F.); (N.C.); (A.Z.)
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (P.T.); (E.S.); (N.K.N.)
| | - Nikolaos Chatzikonstantinou
- School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, 15780 Athens, Greece; (P.P.F.); (N.C.); (A.Z.)
| | - Adamantia Zourou
- School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, 15780 Athens, Greece; (P.P.F.); (N.C.); (A.Z.)
| | - Polychronis Tsipas
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (P.T.); (E.S.); (N.K.N.)
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (P.T.); (E.S.); (N.K.N.)
| | - Eleni Alexandratou
- School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, 15780 Athens, Greece;
| | - Nektarios K. Nasikas
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (P.T.); (E.S.); (N.K.N.)
- Department of Military Studies, Division of Mathematics and Engineering Sciences, Hellenic Army Academy, Vari, 16673 Athens, Greece
| | - Konstantinos V. Kordatos
- School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, 15780 Athens, Greece; (P.P.F.); (N.C.); (A.Z.)
| | - Maria Antoniadou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Agia Paraskevi, 15341 Athens, Greece; (P.T.); (E.S.); (N.K.N.)
- Department of Chemical Engineering, University of Western Macedonia, 50100 Kozani, Greece
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2
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Zhou Y, Sun M, Lin C. Study on the preparation of CdS/TiO 2 corn straw biochar composite materials for photocatalytic reduction of CO 2 and collaborative H 2 production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:48222-48232. [PMID: 39023726 DOI: 10.1007/s11356-024-34282-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 07/02/2024] [Indexed: 07/20/2024]
Abstract
A thermal synthesis method was employed in this work to prepare CdS/TiO2 corn straw biochar photocatalytic composite materials suitable for synergistic hydrogen production with the photocatalytic reduction of CO2. The structure and synergistic reaction of these composite materials were characterized by its photogenerated electron transfer process. Compared with pure TiO2, the energy band gap of the optimal CdS/TiO2 corn straw biochar composite material was reduced to 2.89 eV. The heterostructure coupling between TiO2 and CdS in the biochar accelerated the transfer of photogenerated electrons and reduced the recombination rate of photogenerated electrons and holes. Under visible light irradiation, the photocatalytic H2 yield of this CdS/TiO2 corn straw-derived biochar composite material was 1200 µmol·h-1·g-1, the CO yield was 150 µmol·h-1·g-1, and the CH4 yield was 55 µmol·h-1·g-1. The key to this synergistic reaction is the formation of heterojunctions between CdS and TiO2 as well as the rapid oxidation of holes in the composite material caused by the doping of biochar.
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Affiliation(s)
- Yunlong Zhou
- Zhejiang Guangsha Vocational and Technical University of Construction, Dongyang City, Zhejiang Province, China
| | - Meng Sun
- Northeast Electric Power University, Jilin City, Jilin Province, China.
| | - Chunmian Lin
- Zhejiang Guangsha Vocational and Technical University of Construction, Dongyang City, Zhejiang Province, China
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3
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Cu2O/CuS/ZnS Nanocomposite Boosts Blue LED-Light-Driven Photocatalytic Hydrogen Evolution. Catalysts 2022. [DOI: 10.3390/catal12091035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In the present work, we described the synthesis and characterization of the ternary Cu2O/CuS/ZnS nanocomposite using a facile two-step wet chemical method for blue LED-light-induced photocatalytic hydrogen production. The concentrations of the ZnS precursor and reaction time were essential in controlling the photocatalytic hydrogen production efficiency of the Cu2O/CuS/ZnS nanocomposite under blue LED light irradiation. The optimized Cu2O/CuS/ZnS nanocomposite exhibited a maximum photocatalytic hydrogen evolution rate of 1109 µmolh−1g−1, which was remarkably higher than Cu2O nanostructures. Through the cycle stability it can be observed that the hydrogen production rate of the Cu2O/CuS/ZnS nanocomposite decreased after 4 cycles (1 cycle = 3 h), but it remained at 82.2% of the initial performance under blue LED light irradiation. These reasons are mainly attributed to the introduction of CuS and ZnS to construct a rationally coupled reaction system, which enables the synergistic utilization of photogenerated carriers and the increased absorption of visible light for boosting blue LED-light-driven photocatalytic hydrogen evolution.
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Ramos-Corona A, Rangel R, Espino J, Lara J, Nuñez R, Bartolo-Pérez P, Alvarado-Gil J. High-yield of Lignin degradation under N-ZnO/Graphene oxide compounds. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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5
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Markovskaya DV, Zhurenok AV, Kozlova EA. Rate of Photocatalytic Hydrogen Evolution and Photovoltaic Characteristics as a Function of the Nature and Concentration of the Electrolyte. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s003602442205020x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Photocatalytic reforming of biomass-derived feedstock to hydrogen production. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04693-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Pollutants degradation and power generation by photocatalytic fuel cells: A comprehensive review. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.07.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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8
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Al-Azri ZHN, AlOufi M, Chan A, Waterhouse GIN, Idriss H. Metal Particle Size Effects on the Photocatalytic Hydrogen Ion Reduction. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05070] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Z. H. N. Al-Azri
- School of Chemical Sciences, The University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Oman
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - M. AlOufi
- Corporate Research and Development (CRD), Saudi Basic Industries Corporation (SABIC), KAUST, Thuwal 23955-6900, Saudi Arabia
| | - A. Chan
- School of Chemical Sciences, The University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - G. I. N. Waterhouse
- School of Chemical Sciences, The University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - H. Idriss
- Corporate Research and Development (CRD), Saudi Basic Industries Corporation (SABIC), KAUST, Thuwal 23955-6900, Saudi Arabia
- Department of Chemistry, University College London, London WC1E 6BT, U.K
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Markovskaya DV, Kozlova EA. Formal Kinetic Description of Photocatalytic Hydrogen Evolution from Ethanol Aqueous Solutions in the Presence of Sodium Hydroxide. KINETICS AND CATALYSIS 2019. [DOI: 10.1134/s0023158418060101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Ismael M, Wu Y, Taffa DH, Bottke P, Wark M. Graphitic carbon nitride synthesized by simple pyrolysis: role of precursor in photocatalytic hydrogen production. NEW J CHEM 2019. [DOI: 10.1039/c9nj00859d] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
g-C3N4 with structural defects and low polymerization synthesized by urea as the precursor for photocatalytic H2 production under visible light.
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Affiliation(s)
- Mohammed Ismael
- Institute of Chemistry
- Technical Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
| | - Ying Wu
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Dereje H. Taffa
- Institute of Chemistry
- Technical Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
| | - Patrick Bottke
- Institute of Chemistry
- Technical Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
| | - Michael Wark
- Institute of Chemistry
- Technical Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
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11
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Khalik WF, Ho LN, Ong SA, Voon CH, Wong YS, Yusuf SY, Yusoff NA, Lee SL. Enhancement of simultaneous batik wastewater treatment and electricity generation in photocatalytic fuel cell. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35164-35175. [PMID: 30328543 DOI: 10.1007/s11356-018-3414-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
The objective of this study was to investigate several operating parameters, such as open circuit, different external resistance, pH, supporting electrolyte, and presence of aeration that might enhance the degradation rate as well as electricity generation of batik wastewater in solar photocatalytic fuel cell (PFC). The optimum degradation of batik wastewater was at pH 9 with external resistor 250 Ω. It was observed that open circuit of PFC showed only 17.2 ± 7.5% of removal efficiency, meanwhile the degradation rate of batik wastewater was enhanced to 31.9 ± 15.0% for closed circuit with external resistor 250 Ω. The decolorization of batik wastewater in the absence of photocatalyst due to the absorption of light irradiation by dye molecules and this process was known as photolysis. The degradation of batik wastewater increased as the external resistor value decreased. In addition, the degradation rate of batik wastewater also increased at pH 9 which was 74.4 ± 34.9% and at pH 3, its degradation rate was reduced to 19.4 ± 8.7%. The presence of aeration and sodium chloride as supporting electrolyte in batik wastewater also affected its degradation and electricity generation. The maximum absorbance of wavelength (λmax) of batik wastewater at 535 nm and chemical oxygen demand gradually decreased as increased in irradiation time; however, batik wastewater required prolonged irradiation time to fully degrade and mineralize in PFC system.
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Affiliation(s)
- Wan Fadhilah Khalik
- Water Research Group (WAREG), School of Environmental 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
| | - Chun-Hong Voon
- School of Materials 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
| | - Sara Yasina Yusuf
- 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
| | - Sin-Li Lee
- School of Materials Engineering, Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia
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12
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Liang X, Huang B, Wang Y, Li C, Liu X, Huang M, Li H. Photoelectrocatalytic oxidation of ascorbate promoted by glucose and tris-(hydroxylmethyl)-amino methane on cadmium sulfide/titanium dioxide electrodes for efficient visible light-enhanced fuel cells. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.128] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Husin H, Alam PN, Zaki M, Sofyana, Jakfar, Husaini, Hasfita F. Enhanced photocatalytic hydrogen production from water-ethanol solution by Ruthenium doped La-NaTaO3. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/345/1/012003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell. Catalysts 2018. [DOI: 10.3390/catal8010030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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15
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Preparation and optimization of TiO2 photoanodes fabricated by pulsed laser deposition for photoelectrochemical water splitting. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3639-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Zhao K, Zeng Q, Bai J, Li J, Xia L, Chen S, Zhou B. Enhanced organic pollutants degradation and electricity production simultaneously via strengthening the radicals reaction in a novel Fenton-photocatalytic fuel cell system. WATER RESEARCH 2017; 108:293-300. [PMID: 27839830 DOI: 10.1016/j.watres.2016.11.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 09/10/2016] [Accepted: 11/01/2016] [Indexed: 06/06/2023]
Abstract
An enhanced result in organic pollutants degradation and simultaneous electricity production has been achieved by establishing a novel Fenton-photocatalytic fuel cell (Fenton-PFC) system in which TiO2 nanotube arrays (TNA) was designed as a photoanode and ferrous ions were added. The proposed Fenton-PFC system can expand the radical reaction for organic pollutants degradation from the surface of electrodes to the whole solution system due to a continuous photoelectric Fenton reaction without continually adding any external voltage and ferrous ions. The cyclic reactions between ferrous ions (Fe2+/Fe3+) and radicals and related species (HO, HO2, O2- and H2O2 etc.) can be achieved at electrodes surface via a self-bias voltage yielded by the PFC. More importantly, the proposed Fenton-PFC system has hardly any sludge due to an effective radical reaction using a small amount of ferrous ions. The degradation rate of refractory organics, such as methyl orange, methylene blue, congo red and tetracycline, increased from 34.99%, 43.75%, 40.58% and 34.40% (the traditional PFC without Fe2+) to 97.34%, 95.36%, 93.23% and 73.80% (the Fenton-PFC within Fe2+) respectively after 60 min operation. Meanwhile, the electricity generation is up to 1.21-2.04 times larger than the traditional PFC. The proposed Fenton-PFC system provides a more economical and efficient way for energy recovery and wastewater treatment.
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Affiliation(s)
- Kai Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China
| | - Qingyi Zeng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China
| | - Jing Bai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China.
| | - Jinhua Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China
| | - Ligang Xia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China
| | - Shuai Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, PR China; Key Laboratory of Thin Film and Microfabrication Technology, Ministry of Education, Shanghai 200240, PR China.
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17
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Zhang R, Peng M, Wang B. Catalytic selectivity of Rh/TiO2catalyst in syngas conversion to ethanol: probing into the mechanism and functions of TiO2support and promoter. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02350a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic selectivity, the functions of a TiO2support and promoter, and the mechanism of ethanol synthesis from syngas on a Rh/TiO2model catalyst have been fully identified.
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Affiliation(s)
- Riguang Zhang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province
- Taiyuan University of Technology
- Taiyuan 030024
- P.R. China
| | - Mao Peng
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province
- Taiyuan University of Technology
- Taiyuan 030024
- P.R. China
| | - Baojun Wang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province
- Taiyuan University of Technology
- Taiyuan 030024
- P.R. China
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18
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19
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Villa K, Domènech X, García-Pérez UM, Peral J. Photocatalytic Hydrogen Production Under Visible Light by Using a CdS/WO3 Composite. Catal Letters 2015. [DOI: 10.1007/s10562-015-1612-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Wei D, Jin XC, Dai DX, Ma ZB, Yang XM. Direct Observation of Ethanol Photocatalysis on Rutile TiO2(110) Surface. CHINESE J CHEM PHYS 2015. [DOI: 10.1063/1674-0068/28/cjcp1507155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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21
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Gao M, Zhu L, Ong WL, Wang J, Ho GW. Structural design of TiO2-based photocatalyst for H2 production and degradation applications. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00879d] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review aims to provide a comprehensive and contemporary overview, as well as a guide of the development of new generation TiO2 based photocatalysts via structural design for improved solar energy conversion technologies.
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Affiliation(s)
- Minmin Gao
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Liangliang Zhu
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Wei Li Ong
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Jing Wang
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
- Engineering Science Programme
- National University of Singapore
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22
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Zhang W, Wang S, Li J, Yang X. Photocatalytic hydrogen production from methanol aqueous solution under visible-light using Cu/S–TiO2 prepared by electroless plating method. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.10.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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23
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Michal R, Sfaelou S, Lianos P. Photocatalysis for renewable energy production using PhotoFuelCells. Molecules 2014; 19:19732-50. [PMID: 25438083 PMCID: PMC6271802 DOI: 10.3390/molecules191219732] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/14/2014] [Accepted: 11/24/2014] [Indexed: 11/16/2022] Open
Abstract
The present work is a short review of our recent studies on PhotoFuelCells, that is, photoelectrochemical cells which consume a fuel to produce electricity or hydrogen, and presents some unpublished data concerning both electricity and hydrogen production. PhotoFuelCells have been constructed using nanoparticulate titania photoanodes and various cathode electrodes bearing a few different types of electrocatalyst. In the case where the cell functioned with an aerated cathode, the cathode electrode was made of carbon cloth carrying a carbon paste made of carbon black and dispersed Pt nanoparticles. When the cell was operated in the absence of oxygen, the electrocatalyst was deposited on an FTO slide using a special commercial carbon paste, which was again enriched with Pt nanoparticles. Mixing of Pt with carbon paste decreased the quantity of Pt necessary to act as electrocatalyst. PhotoFuelCells can produce electricity without bias and with relatively high open-circuit voltage when they function in the presence of fuel and with an aerated cathode. In that case, titania can be sensitized in the visible region by CdS quantum dots. In the present work, CdS was deposited by the SILAR method. Other metal chalcogenides are not functional as sensitizers because the combined photoanode in their presence does not have enough oxidative power to oxidize the fuel. Concerning hydrogen production, it was found that it is difficult to produce hydrogen in an alkaline environment even under bias, however, this is still possible if losses are minimized. One way to limit losses is to short-circuit anode and cathode electrode and put them close together. This is achieved in the “photoelectrocatalytic leaf”, which was presently demonstrated capable of producing hydrogen even in a strongly alkaline environment.
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Affiliation(s)
- Robert Michal
- Department of Chemical Engineering, University of Patras, University Campus, Patras 26500, Greece.
| | - Stavroula Sfaelou
- Department of Chemical Engineering, University of Patras, University Campus, Patras 26500, Greece.
| | - Panagiotis Lianos
- Department of Chemical Engineering, University of Patras, University Campus, Patras 26500, Greece.
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24
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Ma Y, Wang X, Jia Y, Chen X, Han H, Li C. Titanium Dioxide-Based Nanomaterials for Photocatalytic Fuel Generations. Chem Rev 2014; 114:9987-10043. [DOI: 10.1021/cr500008u] [Citation(s) in RCA: 1845] [Impact Index Per Article: 167.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yi Ma
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457
Zhongshan Road, Dalian 116023, China
| | - Xiuli Wang
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457
Zhongshan Road, Dalian 116023, China
| | - Yushuai Jia
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457
Zhongshan Road, Dalian 116023, China
| | - Xiaobo Chen
- Department
of Chemistry, College of Arts and Sciences, University of Missouri-Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Hongxian Han
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457
Zhongshan Road, Dalian 116023, China
| | - Can Li
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457
Zhongshan Road, Dalian 116023, China
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Markovskaya DV, Lyubina TP, Kozlova EA, Cherepanova SV, Gerasimov EY, Saraev AA, Kaichev VV. Effect of doping a cadmium sulfide-zinc sulfide solid solution with copper ions on its physicochemical properties and catalytic activity in hydrogen recovery from aqueous solutions under the action of visible radiation. KINETICS AND CATALYSIS 2014. [DOI: 10.1134/s0023158414040119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kaboudin B, Kazemi F, Ghaderian A, Navidi E, Zand Z. A novel method for the synthesis of Fe3O4nanoparticles/CdS nanowires heterostructure nanocomposite and uses in photodegradation of methylene blue. J Sulphur Chem 2013. [DOI: 10.1080/17415993.2013.863316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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A novel and simple method for the preparation of hexagonal CdS nanoparticles: synthesis, characterization, and uses in photocatalytic reduction of nitrobenzenes to aminobenzenes using sunlight. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0380-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liang Y, Shao M, Cui W, Liu L, McEvoy JG. Photocatalytic degradation of Rhodamine B by CdS-loaded K4Nb6O17 nanocomposites prepared via reverse microemulsion. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Ma Z, Zhou C, Mao X, Ren Z, Dai D, Yang X. Kinetics and Dynamics of Photocatalyzed Dissociation of Ethanol on TiO2(110). CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/01/1-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Chen Q, Li J, Li X, Huang K, Zhou B, Cai W, Shangguan W. Visible-light responsive photocatalytic fuel cell based on WO(3)/W photoanode and Cu(2)O/Cu photocathode for simultaneous wastewater treatment and electricity generation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:11451-11458. [PMID: 22974181 DOI: 10.1021/es302651q] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A visible-light driven photocatalytic fuel cell (PFC) system comprised of WO(3)/W photoanode and Cu(2)O/Cu photocathode was established for organic compounds degradation with simultaneous electricity generation. The central idea for its operation is the mismatched Fermi levels between the two photoelectrodes. Under light illumination, the Fermi level of WO(3)/W photoanode is higher than that of Cu(2)O/Cu photocathode. An interior bias can be produced based on which the electrons of WO(3)/W photoanode can transfer from the external circuit to combine with the holes of Cu(2)O/Cu photocathode then generates the electricity. In this manner, the electron/hole pairs separations at two photoelectrodes are facilitated to release the holes of WO(3)/W photoanode and electrons of Cu(2)O/Cu photocathode. Organic compounds can be decomposed by the holes of WO(3)/W photoanode due to its high oxidation power (+3.1-3.2 V(NHE)). The results demonstrated that various model compounds including phenol, Rhodamine B, and Congo red can be successfully decomposed in this PFC system, with the degradation rate after 5 h operation were obtained to be 58%, 63%, and 74%, respectively. The consistent operation for continuous water treatment with the electricity generation at a long time scale was also confirmed from the result. The proposed PFC system provides a self-sustained and energy-saving way for simultaneous wastewater treatment and energy recovery.
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Affiliation(s)
- Quanpeng Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University No. 800 Dongchuan Rd, Shanghai 200240, China
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Gao P, Liu J, Zhang T, Sun DD, Ng W. Hierarchical TiO2/CdS "spindle-like" composite with high photodegradation and antibacterial capability under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2012; 229-230:209-16. [PMID: 22717065 DOI: 10.1016/j.jhazmat.2012.05.099] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 04/28/2012] [Accepted: 05/28/2012] [Indexed: 05/07/2023]
Abstract
Novel hierarchical TiO(2)/CdS "spindle-like" composites with uniform distribution of CdS nanocrystals on nanoporous TiO(2) mesocrystals were successfully prepared by hydrothermal and hot-injection methods. In this work, the optimal mass ratio of Ti/Cd is determined to be 2 of as-synthesized TiO(2)/CdS composites. This TiO(2)/CdS composite exhibits excellent photocatalytic activity in the degradation of Rhodamine B (RhB) and photocatalytic reaction constant is 10 times higher than that of TiO(2), 3.5 times higher than that of CdS and higher than other TiO(2)/CdS composites with different amount of Ti/Cd mass ratio. In addition, TiO(2)/CdS with optimal amount of CdS kills 99.9% of Escherichia coli in 10 min under visible-light irradiation, which shows significant higher efficiency than pure TiO(2), CdS and other TiO(2)/CdS composites. The excellent performances of this hierarchical composite are ascribed to its outstanding properties, including large specific surface area (BET), high crystallinity of oriented single-crystal-like nanoporous TiO(2) mesocrystals for charge transfer, retarded recombination of photogenerated electron-hole pairs via isolating electrons and holes in two different materials, and extended photo response of this hierarchical composite to the visible region. Considering all these superior properties and abilities, this hierarchical TiO(2)/CdS "spindle-like" composite will show great potential for applications in the water purification field.
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Affiliation(s)
- Peng Gao
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Liu Y, Li J, Zhou B, Li X, Chen H, Chen Q, Wang Z, Li L, Wang J, Cai W. Efficient electricity production and simultaneously wastewater treatment via a high-performance photocatalytic fuel cell. WATER RESEARCH 2011; 45:3991-3998. [PMID: 21620432 DOI: 10.1016/j.watres.2011.05.004] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 05/03/2011] [Accepted: 05/05/2011] [Indexed: 05/30/2023]
Abstract
A great quantity of wastewater were discharged into water body, causing serious environmental pollution. Meanwhile, the organic compounds in wastewater are important sources of energy. In this work, a high-performance short TiO(2) nanotube array (STNA) electrode was applied as photoanode material in a novel photocatalytic fuel cell (PFC) system for electricity production and simultaneously wastewater treatment. The results of current work demonstrate that various model compounds as well as real wastewater samples can be used as substrates for the PFC system. As a representative of model compounds, the acetic acid solution produces the highest cell performance with short-circuit current density 1.42 mA cm(-2), open-circuit voltage 1.48 V and maximum power density output 0.67 mW cm(-2). The STNA photoanode reveals obviously enhanced cell performance compared with TiO(2) nanoparticulate film electrode or other long nanotubes electrode. Moreover, the photoanode material, electrolyte concentration, pH of the initial solution, and cathode material were found to be important factors influencing the system performance of PFC. Therefore, the proposed fuel cell system provides a novel way of energy conversion and effective disposal mode of organics and serves well as a promising technology for wastewater treatment.
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Affiliation(s)
- Yanbiao Liu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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Shiraishi Y, Takeda Y, Sugano Y, Ichikawa S, Tanaka S, Hirai T. Highly efficient photocatalytic dehalogenation of organic halides on TiO2 loaded with bimetallic Pd-Pt alloy nanoparticles. Chem Commun (Camb) 2011; 47:7863-5. [PMID: 21637885 DOI: 10.1039/c1cc12087e] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UV irradiation of TiO(2) loaded with bimetallic Pd-Pt alloy particles promotes highly efficient dehalogenation of organic halides with alcohol as a hydrogen source.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka, 560-8531, Japan.
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Makris T, Dracopoulos V, Stergiopoulos T, Lianos P. A quasi solid-state dye-sensitized solar cell made of polypyrrole counter electrodes. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.11.076] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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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: 11.4] [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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Lu XH, Xie SL, Zhai T, Zhao YF, Zhang P, Zhang YL, Tong YX. Monodisperse CeO2/CdS heterostructured spheres: one-pot synthesis and enhanced photocatalytic hydrogen activity. RSC Adv 2011. [DOI: 10.1039/c1ra00252j] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Liu J, Wei X, Yu Y, Wang X, Deng WQ, Liu XW. ‘Nanoreactors’ for photocatalytic H2 evolution in oil–water biphase systems. Phys Chem Chem Phys 2010; 12:14449-51. [DOI: 10.1039/c0cp01396j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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