A One-Pot Approach to Hierarchically Nanoporous Titania Hollow Microspheres with High Photocatalytic Activity

2008 ◽  
Vol 8 (3) ◽  
pp. 930-934 ◽  
Author(s):  
Jiaguo Yu ◽  
Wen Liu ◽  
Huogen Yu
Keyword(s):  
Photocatalytic Activity ◽  
High Photocatalytic Activity ◽  
Hollow Microspheres ◽  
One Pot

The Synthesis of CuS Hexagonal Nanosheet-Graphene for Use as a High Performance Photocatalyst

NANO ◽  
2016 ◽  
Vol 11 (05) ◽  
pp. 1650054 ◽  
Author(s):  
Bin Zeng ◽  
Yang Yin
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Performance ◽  
Organic Pollutant ◽  
High Photocatalytic Activity ◽  
Charge Carriers ◽  
Thermal Method ◽  
One Pot ◽  
Graphene Nanocomposites ◽  
Excellent Photocatalytic Activity

CuS hexagonal nanosheet/graphene was fabricated by a facile one-pot microwave-thermal method. The samples possess excellent photocatalytic activity for degradation of organic pollutant under visible light. The high photocatalytic activity was attributed to the deposition of CuS hexagonal nanosheet onto graphene. CuS nanosheet serves as a transporter which efficiently inhibits the recombination of the photo-induced charge carriers in the nanocomposites. The developed method demonstrates a facile approach towards the synthesis of two-dimensional semiconductor-graphene nanocomposites with excellent photocatalytic performance under visible light.

scholarly journals Facile Synthesis and Photocatalytic Property of Titania/Carbon Composite Hollow Microspheres with Bimodal Mesoporous Shells

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Guohong Wang ◽  
Bei Cheng ◽  
Jun Zhang ◽  
Lin Xu ◽  
Tingting Yin
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Hollow Spheres ◽  
Photocatalytic Property ◽  
Nitrogen Adsorption ◽  
Carbon Composite ◽  
Hollow Microspheres ◽  
Calcination Time ◽  
One Pot ◽  
Pore Structures

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.

One-pot synthesis of the visible light sensitive C-doped ZnO@g-C3N4 for high photocatalytic activity through Z-scheme mechanism

Optik ◽  
2019 ◽  
Vol 186 ◽  
pp. 34-40 ◽  
Author(s):  
Abdullah M. Alhanash ◽  
Khadija S. Al-Namshah ◽  
Sahar K. Mohamed ◽  
Mohamed S. Hamdy
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Photocatalytic Activity ◽  
One Pot ◽  
One Pot Synthesis ◽  
Doped Zno

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 ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hollow Microspheres ◽  
One Pot ◽  
Highly Efficient

Novel Magnetically Hollowsphere Zn-Doped Magnetite for the Efficient Photo-Reduction of Cr(VI)

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Sang Nguyen Xuan ◽  
Phuong Nguyen Thi Hong ◽  
Tung Vo Hoang
Keyword(s):  
Photocatalytic Activity ◽  
Hexavalent Chromium ◽  
Catalytic Mechanism ◽  
High Photocatalytic Activity ◽  
Reaction Conditions ◽  
One Pot ◽  
Morphology And Structure ◽  
Initial Ph ◽  
The Stability ◽  
Magnetic Recyclable

Uniform and magnetic recyclable hollowsphere Zn doped Fe3O4 were successfully synthesized via simple one-pot solvothermal route. Morphology and structure of as-obtained products was characterized by XRD, SEM, HRTEM methods. The Zn-doped Fe3O4 hollowsphere exhibited high photocatalytic activity for degradation of hexavalent chromium under visible light irradiation. The effects of reaction conditions such as initial pH, photocatalyst dosage and hexavalent chromium contratentation were also studied systematically. The stability of the catalysts and and possible catalytic mechanism was also proposed. The results indicate that Zn doped Fe3O4 can be promising catalyst for photo-reduction of hexavalent chromium.

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