Enhancement of photocatalytic activity of nano-scale TiO2 particles co-doped by rare earth elements and heteropolyacids

Shi, Huixian; Zhang, Tianyong; An, Taicheng; Li, Bin; Wang, Xiao

doi:10.1016/j.jcis.2012.04.069

Cited by 86 publications

(39 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Positive effects of 4f electron orbital hybridization on the photocatalytic activities of TiO 2 were reported previously. 27,28 In this research, we developed a two-step process to incorporate RE ions ( Chemical and structural properties of the synthesized nanomaterials were characterized by Raman spectroscopy (Renishaw micro-Raman system with a NIR laser at 785 nm excitation). Morphologies of the nanostructures were observed by using transmission electron microscopes (Hitachi H-7000, Hitachi HD 2000, 200 kV) with Energy Dispersive X-ray Spectroscopy (EDS).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

et al. 2015

View full text Add to dashboard Cite

A two-step process is developed to synthesize rare earth doped titania nanorods (RE-TiO 2 NRs) as photocatalysts for efficient degradation of lignin under simulated sunlight irradiation. In this approach, protonated titanate nanotubes with layered structures were first prepared by a hydrothermal approach, and rare earth metal ions were subsequently bound to the negatively charged surface of the synthesized titanate via electrostatic incorporation. The as-synthesized RE-TiO 2 NRs after calcination generally showed much higher photocatalytic efficiencies than those of undoped TiO 2 NRs or the commercial P25

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

et al. 2015

View full text Add to dashboard Cite

show abstract

“…[69] The visible-light absorption of Ag + -N-TiO 2 became broader and stronger upon formation of composites with the HPA owing to charge transfer between the HPA and the TiO 2 nanochains. Shi et al [70] O 40 , were prepared through a sol-gel/solvothermal method. [71] The composite materials shifted the absorption edge of the bare fly-ash TiO 2 to the visible-light region.…”

Section: ·-mentioning

confidence: 99%

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

Marcı̀¹,

García‐López²,

Palmisano³

2014

Eur J Inorg Chem

View full text Add to dashboard Cite

show abstract

“…This study has demonstrated that the modified TiO 2 catalysts enhance the photocatalytic ability as to compare to TiO 2 . Some examples are clearly shown in the researches of others; degradation of organic compounds such as Eu-TiO 2 for Rhodamine B (RB) degradation [2], La-TiO 2 , Pr-TiO 2 , Nd-TiO 2 for reduction of hexavalent chromium and degradation of methylene blue [3] and La-TiO 2 and Ce-TiO 2 for degradation of methylene blue [4].…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, there are a few reports on ceria-titania for CO 2 photoreduction. Recently, Xiong et al and Matejova et al studied the CeO 2 -TiO 2 catalyst activity for photocatalytic conversion of CO 2 to liquid products (methanol and formaldehyde) and to gaseous products (CH 4 and CO), respectively [6,7]. However, the study was limited under UV light irradiation study only.…”

Section: Introductionmentioning

confidence: 99%

CeO2-TiO2 FOR PHOTOREDUCTION OF CO2 TO METHANOL UNDER VISIBLE LIGHT: EFFECT OF CERIA LOADING

Abdullah

Ismail

Yaakob³

et al. 2017

MJAS

View full text Add to dashboard Cite

A visible light-driven photocatalyst, CeO 2 -TiO 2 catalyst with different ceria loading was synthesized by impregnation method between TiO 2 powder and cerium oxide nanoparticles slurry. The prepared catalyst samples were characterized by X-ray diffraction (XRD), surface area analysis, UV-vis absorption spectroscopy and photoluminescence spectroscopy (PL). The band gap of CeO 2 -TiO 2 catalyst was found to be 2.15 -2.4 eV. The band gap reduction clearly indicated the successful loading of CeO 2 on TiO 2 . The photocatalytic activity was determined by measuring the photoreduction of CO 2 to methanol in aqueous solution under visible light. The effect of cerium loading in the range of 1 to 5 wt% on the photocatalytic activity was studied and 2 wt% CeO 2 -TiO 2 was found to exhibit the maximum photoactivity of 18.6 µmol/g.catalyst after 6 hours irradiation. Results showed that the prepared photocatalyst is visible light active and may be used as effective catalyst in photoreduction of CO 2 to methanol.Keywords: metal oxide, photocatalyst, band gap, nanoparticles Abstrak Fotomangkin yang boleh diaplikasi di bawah radiasi cahaya nampak iaitu mangkin CeO 2 -TiO 2 yang berbeza muatan ceria telah disintesis dengan kaedah impregnasi serbuk titanium dioksida dengan mendakan partikel nano cerium dioksida. Ciri mangkin yang dihasilkan dikaji dengan menggunakan pembelauan sinar-X (XRD), analisis luas permukaan, UV-Vis spektrofotometer dan spektroskopi fotoluminesen (PL). Jurang tenaga mangkin CeO 2 -TiO 2 adalah di antara 2.15 eV hingga 2.4 eV. Pengurangan jurang tenaga jelas menunjukkan pemuatan CeO 2 ke atas TiO 2 telah berjaya. Aktiviti fotopemangkinan ditentukan melalui tindak balas penurunan gas karbon dioksida (CO 2 ) di dalam larutan akueus kepada metanol dan dijalankan di bawah radiasi cahaya nampak. Kesan pemuatan 1 hingga 5 peratus berat cerium ke atas TiO 2 terhadap aktiviti fotopemangkinan telah dikaji dan CeO 2 -TiO 2 dengan 2 peratus berat cerium didapati menunjukkan fotosensitiviti maksimum iaitu penghasilan 18.6 µmol/g.mangkin selepas 6 jam radiasi. Hasil kajian menunjukkan bahawa fotomangkin yang dihasilkan adalah aktif di bawah cahaya nampak dan dijangka efektif untuk penurunan CO 2 kepada metanol.Kata kunci: logam oksida, fotomangkin, jurang tenaga, partikel nano

show abstract

Enhancement of photocatalytic activity of nano-scale TiO2 particles co-doped by rare earth elements and heteropolyacids

Cited by 86 publications

References 28 publications

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

CeO2-TiO2 FOR PHOTOREDUCTION OF CO2 TO METHANOL UNDER VISIBLE LIGHT: EFFECT OF CERIA LOADING

Contact Info

Product

Resources

About

Enhancement of photocatalytic activity of nano-scale TiO2 particles co-doped by rare earth elements and heteropolyacids

Cited by 86 publications

References 28 publications

Synthesis of rare earth doped TiO2nanorods as photocatalysts for lignin degradation

Synthesis of rare earth doped TiO2nanorods as photocatalysts for lignin degradation

Heteropolyacid‐Based Materials as Heterogeneous Photocatalysts

CeO2-TiO2 FOR PHOTOREDUCTION OF CO2 TO METHANOL UNDER VISIBLE LIGHT: EFFECT OF CERIA LOADING

Contact Info

Product

Resources

About

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation

Synthesis of rare earth doped TiO₂nanorods as photocatalysts for lignin degradation