One-Pot Miniemulsion-Mediated Route to BiOBr Hollow Microspheres with Highly Efficient Photocatalytic Activity

2011 ◽  
Vol 17 (29) ◽  
pp. 8039-8043 ◽  
Author(s):  
Hefeng Cheng ◽  
Baibiao Huang ◽  
Zeyan Wang ◽  
Xiaoyan Qin ◽  
Xiaoyang Zhang ◽  
...  
2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Guohong Wang ◽  
Bei Cheng ◽  
Jun Zhang ◽  
Lin Xu ◽  
Tingting Yin

Titania/carbon composite hollow microspheres with bimodal mesoporous shells are one-pot fabricated by hydrothermal treatment of the acidic (NH4)2TiF6aqueous solution in the presence of glucose at180∘C for 24 h and then calcined at450∘C. The as-prepared samples were characterized by XRD, SEM, TEM, HRTEM, UV-visible spectroscopy, and nitrogen adsorption-desorption isotherms. The photocatalytic activity of the as-prepared samples was evaluated by daylight-induced photocatalytic decolorization of methyl orange aqueous solution at ambient temperature. The effects of calcination time on the morphology, phase structure, crystallite size, specific surface area, pore structures, and photocatalytic activity of the microspheres were investigated. The results indicated that the as-obtained TiO2/C composite hollow spheres generally exhibit bimodal mesopore size distribution with their peak intra-aggregated mesopore size in the range of 2.3–4.5 nm and peak interaggregated mesopore size in the range of 5.7–12.7 nm, depending on specific calcination time. The daylight-induced photoactivity of as-obtained hollow TiO2/C microspheres generally exceeds that of Degussa P25. The influences of calcination time on the photoactivity are discussed in terms of carbon content, phase structures, and pore structures.


RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101198-101207 ◽  
Author(s):  
Shiping Xu ◽  
Yuan Gao ◽  
Xiang Sun ◽  
Min Yue ◽  
Qinyan Yue ◽  
...  

The facile one-pot synthesized carbon incorporated 3D hierarchical TiO2 nanostructures simultaneously possessed superior adsorption capability and photocatalytic activity towards pollutants.


2016 ◽  
Vol 45 (3) ◽  
pp. 1160-1165 ◽  
Author(s):  
Yu Huang ◽  
Jun Chen ◽  
Wei Zou ◽  
Linxing Zhang ◽  
Lei Hu ◽  
...  

TiO2/CdS porous hollow microspheres have been one-pot rapidly synthesized and exhibit an excellent photocatalytic activity of 996 μmol h−1 under visible light.


2017 ◽  
Vol 5 (6) ◽  
pp. 5521-5527 ◽  
Author(s):  
Prem Singh Saud ◽  
Bishweshwar Pant ◽  
Gunendra Prasad Ojha ◽  
Dae-Up Kim ◽  
Yun-Su Kuk ◽  
...  

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