Synergistic effect of CeO 2 modified TiO 2 photocatalyst on the enhancement of visible light photocatalytic performance

Chen, Fujung; Ho, Ping-Luen; Ran, Rui; Wenming, Chen; Si, Zhichun; Wu, Xiaodong; Weng, Duan; Huang, Zheng‐Hong; Lee, Chiyoung

doi:10.1016/j.jallcom.2017.04.138

Cited by 99 publications

(60 citation statements)

References 66 publications

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“…XPS measurement was used to determine the chemical constitution of CeO 2 ‐Pd (Figure S3) and Ti 0.1 Ce 0.9 O 2 ‐Pd and the valence states of elements (Figure ). The Ti species were quadrivalent confirmed by the two major peaks lying at 461.2eV (2p 3/2 ) and 467.3eV (2p 1/2 ) which are characteristic signals of TiO 2 …”

Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

“…Due to the chemical stability and promoting effect, titanium dioxide (TiO 2 ) has been widely used as catalyst supports or photocatalysts,, or emulsifier . There have been a lot of studies related to nanocomposites of TiO 2 , among which the compositing with ceria (CeO 2 ) have received large amounts of interest for improving the textural and structural properties of TiO 2 , . As an important functional rare earth oxide, CeO 2 has been extensively investigated because of its promising application in catalysis, such as oxidation of carbon monoxide (CO), three‐way catalysts, photocatalysts, sewage treatment, hydrogenation of cinnamaldehyde, and low‐temperature water‐gas‐shifts reactions .…”

Section: Introductionmentioning

confidence: 99%

“…There have been a lot of studies related to nanocomposites of TiO 2 , among which the compositing with ceria (CeO 2 ) have received large amounts of interest for improving the textural and structural properties of TiO 2 , . As an important functional rare earth oxide, CeO 2 has been extensively investigated because of its promising application in catalysis, such as oxidation of carbon monoxide (CO), three‐way catalysts, photocatalysts, sewage treatment, hydrogenation of cinnamaldehyde, and low‐temperature water‐gas‐shifts reactions . However, pure ceria exhibits low catalytic activity due to limited number of anion defects and oxygen vacancy , .…”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

et al. 2019

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We report a facile preparation method of Ti-doped CeO 2 nanosheets and their use as supports for palladium (Pd) deposition. The nanosheets were fabricated by the coordination-precipitation method, and Pd nanoparticles were placed on the surfaces in situ. The obtained Pd-loaded nanosheets Ti x Ce 1-x O 2 -Pd were applied as catalysts in the hydrogenation of 4-nitrophenol (4-NP). While the catalyst supported by pure CeO 2 nanosheets exhibited a 4-NP conversion of 40 % in 10 min, doping a small amount of Ti into the support led to a [a]

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

et al. 2019

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“…This is possibly due to lack of visible light absorption as it exhibits high band gap energy (3.0-3.2 eV) and rapid electron-hole (e − /h + ) recombination 6 . To reduce these drawbacks and improve structural stability, in the past several methods such as doping of hetero-junction with equivalent and/ or different bandgap materials 7 , dyes sensitization 8 , noble and non-noble metal deposition 9 were tried. Among those different methods explored, researchers tried to combine two or more semiconductor metal oxides having different band gaps [10][11][12][13][14][15] .…”

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confidence: 99%

Enhanced photocatalytic and electrochemical performance of TiO2-Fe2O3 nanocomposite: Its applications in dye decolorization and as supercapacitors

Kumar¹,

Abebe

Nagaswarupa

et al. 2020

Sci Rep

110

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this work reveals a green combustion route for the synthesis of tio 2 , fe 2 o 3 and tio 2 -fe 2 o 3 nanocomposites as photocatalysts for decolorization of titan Yellow (tY) and Methyl orange (Mo) dyes at room temperature in aqueous solution concentration of 20 ppm under UV-light irradiation. We observed that the tio 2 -fe 2 o 3 nanocomposite shows superior photocatalytic activity for tY dye compared to pure tio 2 and fe 2 o 3 . Rate constant (k) values of tio 2 , fe 2 o 3 and tio 2 -fe 2 o 3 for tY and Mo are 0.0194, 0.0159, 0.04396 and 0.00931, 0.00772 0.0119 kmin −1 respectively. the surface area and pore volume of tio 2 -fe 2 o 3 nanocomposite were found to be 71.56 m 2 /g and 0.076 cm 3 /g, respectively as revealed by Bet studies. from the Barrett-Joyner-Halenda (BJH) plot, the mean pore diameter of tio 2fe 2 o 3 nanoparticles was found to be 2.43 nm. Further, the TiO 2 -fe 2 o 3 nanocomposite showed good electrochemical behavior as an electrode material for supercapacitors when compared to pure tio 2 and fe 2 o 3 nanoparticles resulted in stable electrochemical performance with nearly 100% coulombic efficiency at a scan rate of 10 mV/s for 1000 cycles. Interestingly, the novelty of this work is that the designed supercapacitors showed stable electrochemical performance even at 1000 th cycle, which might be useful for rechargeable supercapacitor applications. the electrochemical properties of the nanocomposites were compared by the data obtained by cyclic voltammograms, charge-discharge tests and electrochemical impedance spectroscopic studies. these results demonstrated that the tio 2fe 2 o 3 nanocomposite showed stable performance compared to tio 2 and fe 2 o 3 nanoparticles at current density of 5 Ag −1 .Recently electrochemical studies have gained significant attention due to energy and environment related issues. Since the discovery of TiO 2 and its applications as photo-anode for battery, splitting of water, supercapacitor, dye removal etc 1 ., many different metal oxides and electrodes have been explored to enhance the energy conversion efficiency. Amongst a variety of semiconductor metal oxides, hematite (α-Fe 2 O 3 ) was found to be a good anode material for supercapacitor application, which could be attributed to its high solar-to-hydrogen efficiency, encouraging optical band gap (~2 eV), outstanding chemical strength as well as ease of availability in the nature. However, α-Fe 2 O 3 exhibits low experimental performance compared with the theoretical values, which is possibly due to poor conducting and oxygen evolution properties in addition to short whole diffusion length. To overcome these problems, various synthetic methods have been tried in the recent past, to improve the experimental performance of α-Fe 2 O 3 .But, solution-based combustion method is a simple, low cost, energy saving, easy to control the surface morphology and particle size 2 . In addition, the materials prepared in this method are organic solvent free as we used water as solvent 3-5 .

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TiO₂/CeO₂ Frame with Enriched Oxygen Vacancies and Hetero‐Interfaces for Efficient Electrochemical N₂ Reduction

Yan

et al. 2023

ChemCatChem

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Electrochemical nitrogen reduction reaction (NRR) under ambient conditions offers an environmentally benign and sustainable alternative for NH3 synthesis. Exploring highly active and robust NRR electrocatalysts is one of the prerequisites for developing sustainable N2/NH3 cycle systems. In this work, a surface chemistry rich TiO2/CeO2 frame is developed for electrochemical NRR, which is composed of ultrathin TiO2 nanosheets supported with CeO2 nanoparticles. Its unique porous framework as well as formed plentiful oxygen vacancies (OVs) and hetero‐interfaces collectively facilitate the adsorption/activation of N2 and transfer of electrons and protons. The catalyst can attain a high NH3 yield rate of 8.8 μg h−1 mg−1cat. and a Faradaic efficiency of 6.8 % at −0.25 V versus reversible hydrogen electrode, comparable with other reported Ti‐based and OVs‐contained catalysts. Moreover, the TiO2/CeO2 can maintain high durability over repeated 20 cycles. Therefore, this work heralds a new paradigm of fabricating framework‐structured catalyst with enriched hetero‐interfaces and defects toward effective and sustainable NH3 synthesis.

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Synergistic effect of CeO 2 modified TiO 2 photocatalyst on the enhancement of visible light photocatalytic performance

Cited by 99 publications

References 66 publications

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Enhanced photocatalytic and electrochemical performance of TiO2-Fe2O3 nanocomposite: Its applications in dye decolorization and as supercapacitors

TiO₂/CeO₂ Frame with Enriched Oxygen Vacancies and Hetero‐Interfaces for Efficient Electrochemical N₂ Reduction

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Synergistic effect of CeO 2 modified TiO 2 photocatalyst on the enhancement of visible light photocatalytic performance

Cited by 99 publications

References 66 publications

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO2 Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO2 Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Enhanced photocatalytic and electrochemical performance of TiO2-Fe2O3 nanocomposite: Its applications in dye decolorization and as supercapacitors

TiO2/CeO2 Frame with Enriched Oxygen Vacancies and Hetero‐Interfaces for Efficient Electrochemical N2 Reduction

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Product

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Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

TiO₂/CeO₂ Frame with Enriched Oxygen Vacancies and Hetero‐Interfaces for Efficient Electrochemical N₂ Reduction