Visible light driven nanocrystal anatase TiO2 doped by Ce from sol–gel method and its photoelectrochemical water splitting properties

Tian, Mengkui; Wang, Huimin; Sun, Dongshan; Peng, Wenjie; Tao, Wenliang

doi:10.1016/j.ijhydene.2014.04.036

Cited by 25 publications

(11 citation statements)

References 25 publications

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“…In the molar ratio range tested (from 0.5 to 3.0%), the band gap decreased as the molar ratios of Ce-TiO 2 increased to a certain value. For the combination properties of the band structures of TiO 2 and CeO 2-y , it can be assumed the formed Ti-O-Ce bonding which is mainly composed by Ti 3d and localized unoccupied Ce 4f, while the valence band is mainly composed by O 2p [28]. It means that when the light energy is higher than E Ce4f -E vb , the electrons in valence band can transmit to Ce 4f level.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Enhanced photocatalytic properties of reusable TiO 2 -loaded natural porous minerals in dye wastewater purification

et al. 2016

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Diatomite-based recyclable photocatalysts containing single lanthanide doped TiO 2 nanoparticles (NPs) were synthesized by using simple sol-gel method. Photocatalytic activities of the prepared Ce-or La-single doped TiO 2 /diatomite catalysts were estimated by the degradation of Rhodamine B (RhB) under simulated sunlight irradiation. The XRD and Raman spectra shown only anatase phase of TiO 2 for the un-doped and Ce-doped samples. The TEM images revealed uniform distribution of TiO 2 NPs on the matrix, indicating that diatomite played an important role to prevent the agglomeration of TiO 2 NPs. Ce-TiO 2 /diatomite showed a red shift in UV-visible light absorption edge with enhanced absorption intensity than un-doped sample, whereas La-TiO 2 /diatomite showed a blue shift. The bandgap energy of 1.5%-Ce doped sample is as low as 2.75 eV. The XPS spectra showed the presence of both Ce 3+ and Ce 4+ oxidation states for Ce dopant. The photoluminescence spectra of the Ce-doped samples showed first decrease in the recombination centers with the maximum decrease for 1.5%-Ce doped sample and then started increase with the increasing Ce in the samples. As compared to the La-doped samples, a desired behavior was observed for the Ce-doped hybrid due to the redox Ce 4+ /Ce 3+ pairs acting as electron scavengers and localized unoccupied Ce 4f level narrowing the band gap. The incorporation with diatomite as support of TiO 2 nanoparticles is contributed for the improved reusability and also gives a promising strategy to enable the application of nano-photocatalysts in a real wastewater remediation treatment.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Enhanced photocatalytic properties of reusable TiO 2 -loaded natural porous minerals in dye wastewater purification

et al. 2016

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“…Acquisition of clean hydrogen energy by splitting of water using plentiful solar energy is considered as an ideal way to resolve the global renewable energy demand and environment problems [1–4]. In particular, photocatalytic or photoelectrochemical splitting water is one of the most ideal ways considering resource sustainability, environmental, and cost issues [5, 6].…”

Section: Introductionmentioning

confidence: 99%

Solar Hydrogen Production from Cost Effective Stannic Oxide Under Visible Light Irradiation

et al. 2019

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Visible-light-driven stannic oxide was synthesized by facile one-pot solvothermal method from SnCl 2 ·2H 2 O and methanol. The as-prepared powder was identified by XRD as the low crystalline phase of SnO 2 , and its absorption edge reached about 530 nm, presenting good potential to respond to visible light. Under visible light irradiation (λ > 420 nm), the as-prepared tin oxide showed good anodic photocurrent effects on FTO photoelectrode, and showed hydrogen and oxygen evolution activities under electron donor (methanol) and acceptor (AgNO 3 ), respectively, even without any co-catalyst loading. The visible-light-driven mechanism for this SnO 2-x maybe ascribed to Sn 2+ self-doped into Sn 4+ and formed an energy gap between the band gap of SnO 2 .

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“…It is known that H2 reduction could introduce Ti 3+ [10]. The resultant reduced TiO2 had a narrower band gap [11], which exhibited high activity in visible-light-driven water oxidation [12,13].…”

Section: Introductionmentioning

confidence: 99%

The 2018 Impact Factor of Chinese Journal of Catalysis is 4.914

Zhang

2019

Chinese Journal of Catalysis

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Visible light driven nanocrystal anatase TiO2 doped by Ce from sol–gel method and its photoelectrochemical water splitting properties

Cited by 25 publications

References 25 publications

Enhanced photocatalytic properties of reusable TiO 2 -loaded natural porous minerals in dye wastewater purification

Enhanced photocatalytic properties of reusable TiO 2 -loaded natural porous minerals in dye wastewater purification

Solar Hydrogen Production from Cost Effective Stannic Oxide Under Visible Light Irradiation

The 2018 Impact Factor of Chinese Journal of Catalysis is 4.914

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