2011
DOI: 10.1021/jp202720g
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Coupling Oxygen Ion Conduction to Photocatalysis in Mesoporous Nanorod-like Ceria Significantly Improves Photocatalytic Efficiency

Abstract: The mesoporous nanorod-like ceria with high BET surface area of 121 m2/g is prepared by a facile method, microwave-assisted hydrolysis of Ce(NO3)3·6H2O in presence of urea. As compared to bulk ceria, its absorption edge significantly shifts to the visible region with a band gap of as low as 2.75 eV due to the presence of Ce3+. A novel strategy of significantly improving its photocatalytic efficiency is developed by coupling oxygen ion conduction to photocatalysis in the mesoporous nanorod-like ceria, in which … Show more

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Cited by 123 publications
(96 citation statements)
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“…Usually, metal oxides such as CeO 2 [45,53], MnO 2 [47,54], TiO 2 [13] have thermocatalytic oxidation activity at higher temperature in the dark. Therefore, to clarify whether thermocatalytic oxidation could occur on the TiO 2 nanosheets and the thermocatalysis could contribute to the high catalytic activity of the TiO 2 nanosheets under the irradiation of the Hg lamp at higher temperature (Fig.…”
Section: Thermocatalytic Activity At Different Temperaturementioning
confidence: 99%
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“…Usually, metal oxides such as CeO 2 [45,53], MnO 2 [47,54], TiO 2 [13] have thermocatalytic oxidation activity at higher temperature in the dark. Therefore, to clarify whether thermocatalytic oxidation could occur on the TiO 2 nanosheets and the thermocatalysis could contribute to the high catalytic activity of the TiO 2 nanosheets under the irradiation of the Hg lamp at higher temperature (Fig.…”
Section: Thermocatalytic Activity At Different Temperaturementioning
confidence: 99%
“…CeO 2 , MnO 2 , TiO 2 , etc.) follows the Mars-van Krevelen mechanism [47,53,54,61]: Organic or reducible molecule adsorbed on metal oxide (e.g. TiO 2 ) is oxiScheme 1.…”
Section: Photothermocatalytic Synergetic Effectmentioning
confidence: 99%
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“…Synthesis techniques include solution-based techniques such as coprecipitation [9,10], hydrothermal [11], micro-emulsion [12], sol-gel [13,14], solution combustion, electrochemical methods and solid-based techniques such as mechanochemical method, chemical vapour deposition [15] and sputtering [16]. The present work emphasises the effect of synthesis conditions on the crystallite size, lattice parameter and lattice strain on ceria nanoparticles.…”
Section: Introductionmentioning
confidence: 99%
“…However, the absorption intensity in the region of visible light is relatively lower. In order to improve the photocatalytic activity of CeO 2 under visible light or solar irradiation, two methods, i.e., enhancing surface area and doping with other metallic oxides, are generally applied [9,10].…”
Section: Introductionmentioning
confidence: 99%