A general and green approach to synthesize monodisperse ceria hollow spheres with enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80158-80169 ◽  
Author(s):  
Weijun Deng ◽  
Donghui Chen ◽  
Jing Hu ◽  
Liang Chen
Keyword(s):  
Photocatalytic Activity ◽  
Shell Structure ◽  
Hollow Spheres ◽  
Green Approach

We report a general and green approach to synthesize monodisperse ceria hollow spheres with tunable shell structure.

Delicate Control on the Shell Structure of Hollow Spheres Enables Tunable Mass Transport in Water Splitting

2021 ◽  
Author(s):  
Ping Hou ◽  
Dan Li ◽  
Nailiang Yang ◽  
Jiawei Wan ◽  
Chunhui Zhang ◽  
...  
Keyword(s):  
Mass Transport ◽  
Water Splitting ◽  
Shell Structure ◽  
Hollow Spheres

scholarly journals Unexpected Link between the Template Purification Solvent and the Structure of Titanium Dioxide Hollow Spheres

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 112
Author(s):  
Tamás Gyulavári ◽  
Kata Kovács ◽  
Klára Magyari ◽  
Kornélia Baán ◽  
Anna Szabó ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Phase Composition ◽  
Anatase Phase ◽  
Hollow Spheres ◽  
Rutile Phase ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Carbonate Species ◽  
Determining Factor

Carbon spheres were applied as templates to synthesize titanium dioxide hollow spheres. The templates were purified with either ethanol or acetone, and the effects of this treatment on the properties of the resulting titania were investigated. The photocatalytic activity of the catalysts was measured via the decomposition of phenol model pollutant under visible light irradiation. It was found that the solvent used for the purification of the carbon spheres had a surprisingly large impact on the crystal phase composition, morphology, and photocatalytic activity. Using ethanol resulted in a predominantly rutile phase titanium dioxide with regular morphology and higher photocatalytic activity (r0,phenol = 3.9 × 10−9 M∙s−1) than that containing mainly anatase phase prepared using acetone (r0,phenol = 1.2 × 10−9 M∙s−1), surpassing the photocatalytic activity of all investigated references. Based on infrared spectroscopy measurements, it was found that the carbon sphere templates had different surface properties that could result in the appearance of carbonate species in the titania lattice. The presence or absence of these species was found to be the determining factor in the development of the titania’s properties.

Highly photocatalytic activity from tri-modified TiO 2 hollow spheres

2018 ◽  
Vol 214 ◽  
pp. 202-204 ◽  
Author(s):  
Zhengliang Yin ◽  
Shoufei Qiu ◽  
Wenjing Chen ◽  
Huiquan Li ◽  
Li Cheng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hollow Spheres

scholarly journals Enhanced photocatalytic activity of hierarchical structure TiO2 hollow spheres with reactive (001) facets for the removal of toxic heavy metal Cr(vi)

RSC Advances ◽  
2014 ◽  
Vol 4 (65) ◽  
pp. 34577-34583 ◽  
Author(s):  
Yong Yang ◽  
Guozhong Wang ◽  
Quan Deng ◽  
Huiming Wang ◽  
Yunxia Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Photocatalytic Activity ◽  
Hierarchical Structure ◽  
Hollow Spheres ◽  
Toxic Heavy Metal ◽  
Tio2 Hollow Spheres

TiO2 hollow spheres composed of reactive (001) facets were synthesized, and their enhanced Cr(vi) removal activity was demonstrated.

Double-shell structural polyaniline-derived TiO2 hollow spheres for enhanced photocatalytic activity

2019 ◽  
Vol 44 (6) ◽  
pp. 555-564 ◽  
Author(s):  
Xuefeng Sun ◽  
Bin Sun ◽  
Qinghua Gong ◽  
Tingting Gao ◽  
Guowei Zhou
Keyword(s):  
Photocatalytic Activity ◽  
Hollow Spheres ◽  
Tio2 Hollow Spheres

Ultrathin CdS shell-sensitized hollow S-doped CeO2 spheres for efficient visible-light photocatalysis

2019 ◽  
Vol 9 (6) ◽  
pp. 1357-1364 ◽  
Author(s):  
Ning-Chao Zheng ◽  
Ting Ouyang ◽  
Yibo Chen ◽  
Zhu Wang ◽  
Di-Yun Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Shell Structure ◽  
Evolution Rate ◽  
Light Illumination ◽  
Visible Light Photocatalysis ◽  
Visible Light Illumination ◽  
Excellent Photocatalytic Activity ◽  
Systematic Effects ◽  
Doped Ceo2

By virtue of the systematic effects of S-doping on CeO2 and the ultrathin shell structure of CdS, the CeO2−xSx@CdS nanocomposite exhibits excellent photocatalytic activity under visible-light illumination for both H2 evolution (rate up to 1147.2 μmol g−1 h−1) and RhB degradation (efficiency reached 99.8%) as compared to CeO2, CeO2−xSx, and CdS.

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