Photocatalytic oxidation of toluene to benzaldehyde over anatase TiO2 hollow spheres with exposed {001} facets

Cao, Fei; Wang, Jinguo; Lv, Fujian; Zhang, Dieqing; Huo, Yuen J.; Li, Guisheng; Li, Hexing; Zhu, Jian Hua

doi:10.1016/j.catcom.2011.03.007

Cited by 47 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, a more reactive crystalline facet exposed on the surface of morphology controlled TiO 2 nanoparticle can be used to selectively enhance specific photocatalytic reactions. In addition, TiO 2 having a specific surface facet exhibits superior photocatalytic performance for certain types of reactions [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets

Lee¹,

Yun²,

Yu³

et al. 2014

Catalysis Communications

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets

Lee¹,

Yun²,

Yu³

et al. 2014

Catalysis Communications

View full text Add to dashboard Cite

“…Altering the preparation conditions it was found that TiO 2 nanoparticles made by solvothermal synthesis can be prepared with altered <001>/<101> facet ratio [18][19][20]. In several studies it was reported that this led to an improved photocatalytic activity for the degradation of a number of liquid and gas-phase contaminants [21][22][23]. There are much fewer studies on sputter deposited TiO 2 films.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Photocatalytic Activity of Anatase TiO2 Thin Films by Modifying the Preferred <001> Grain Orientation with Reactive DC Magnetron Sputtering

Stefanov

Österlund

2014

Coatings

View full text Add to dashboard Cite

Anatase TiO 2 thin films were deposited by DC reactive magnetron sputtering on glass substrates at 20 mTorr pressure in a flow of an Ar and O 2 gas mixture. The O 2 partial pressure (P O2 ) was varied from 0.65 mTorr to 1.3 mTorr to obtain two sets of films with different stoichiometry. The structure and morphology of the films were characterized by secondary electron microscopy, atomic force microscopy, and grazing-angle X-ray diffraction complemented by Rietveld refinement. The as-deposited films were amorphous. Post-annealing in air for 1 h at 500 °C resulted in polycrystalline anatase film structures with mean grain size of 24.2 nm (P O2 = 0.65 mTorr) and 22.1 nm (P O2 = 1.3 mTorr), respectively. The films sputtered at higher O 2 pressure showed a preferential orientation in the <001> direction, which was associated with particle surfaces exposing highly reactive {001} facets. Films sputtered at lower O 2 pressure exhibited no, or very little, preferential grain orientation, and were associated with random distribution of particles exposing mainly the thermodynamically favorable {101} surfaces. Photocatalytic degradation measurements using methylene blue dye showed that <001> oriented films exhibited approximately 30% higher reactivity. The measured intensity dependence of the degradation rate revealed that the UV-independent rate constant was 64% higher for the <001> oriented film compared to randomly oriented films. The reaction order was also found to be higher for <001> films compared to randomly oriented films, suggesting that the <001> oriented film exposes more reactive surface sites.

show abstract

“…The presence of the catalyst is mandatory for the effectiveness of the process. A further method is described by Cao et al (Cao et al, 2011) who prepared TiO 2 hollow spheres by the hydrothermal reaction between TiF 4 and H 2 O. Such material was used in the photocatalytic oxidation of toluene to give benzaldehyde in water under irradiation with a light of 310 nm.…”

Section: Synthesis Of Phenol Derivativesmentioning

confidence: 99%

Semiconductors in Organic Photosynthesis

Gambarotti¹,

Melone²,

Punta³

2012

Artificial Photosynthesis

View full text Add to dashboard Cite

Photocatalytic oxidation of toluene to benzaldehyde over anatase TiO2 hollow spheres with exposed {001} facets

Cited by 47 publications

References 26 publications

Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets

Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets

Tuning the Photocatalytic Activity of Anatase TiO2 Thin Films by Modifying the Preferred <001> Grain Orientation with Reactive DC Magnetron Sputtering

Semiconductors in Organic Photosynthesis

Contact Info

Product

Resources

About