Hydrothermal synthesis of nanocrystalline anatase from aqueous solutions of titanyl sulfate for photocatalytic applications

2009 ◽  
Vol 43 (5) ◽  
pp. 713-718 ◽  
Author(s):  
V. D. Maksimov ◽  
A. S. Shaporev ◽  
V. K. Ivanov ◽  
B. R. Churagulov ◽  
Yu. D. Tret’yakov
Keyword(s):  
Hydrothermal Synthesis ◽  
Aqueous Solutions ◽  
Titanyl Sulfate ◽  
Photocatalytic Applications

Photocatalytic Decolourisation of Orange II Aqueous Solutions by TiO2 and ZnO Active Layers Screen Printed on Ceramic Tiles

2010 ◽  
Vol 636-637 ◽  
pp. 1377-1382
Author(s):  
Elisabete Rego ◽  
P.S. Marcos ◽  
John Marto ◽  
M.P. Seabra ◽  
J.A. Labrincha
Keyword(s):  
Aqueous Solutions ◽  
Screen Printing ◽  
Operation Time ◽  
Ceramic Materials ◽  
Orange Ii ◽  
Ceramic Tiles ◽  
Active Layers ◽  
Glazed Ceramic ◽  
Photocatalytic Applications ◽  
Interesting Alternative

In this work TiO2 and ZnO layers have been deposited by screen-printing in common glazed ceramic tiles. These layers were evaluated for the photocatalytic degradation of Orange II in aqueous solutions, in a batch photoreactor under visible light. The photocatalytic behaviour was assessed by taking into account experimental variables which include: (i) firing temperature of the TiO2 printed layer; (ii) layer thickness; (iii) operation time; (iv) pH; and (v) dye concentration. Optimal processed layers showed an interesting decolourisation performance (over 90% efficiency after 7-8 h). It is anticipated that these new ceramic materials might be developed as an interesting alternative to TiO2 or ZnO suspensions, for example in photocatalytic applications excusing the particles removal at the end of the process.

scholarly journals Morphology-Controllable Hydrothermal Synthesis of Zirconia with the Assistance of a Rosin-Based Surfactant

2019 ◽  
Vol 9 (19) ◽  
pp. 4145 ◽  
Author(s):  
Chen Guo ◽  
Peng Wang ◽  
Shengliang Liao ◽  
Hongyan Si ◽  
Shangxing Chen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Aqueous Solutions ◽  
Pore Size ◽  
Surface Area ◽  
Calcination Temperature ◽  
Pore Volume ◽  
Crystal Size ◽  
Edge Angle ◽  
Large Pore Volume ◽  
Hollow Cube

With the assistance of a rosin-based surfactant, dehydroabietyltrimethyl ammonium bromine (DTAB), well-dispersed hollow cube-like zirconia particles were firstly synthesized by the hydrothermal treatment of ZrOCl2 aqueous solutions. The introduction of DTAB is crucial for improving the dispersion and regularity of the as-synthesized sample. After calcination, the crystal size of the calcined samples increased, and the edge angle of the cube-like particles became round accordingly. Finally, a hollow spherical morphology was formed for the sample calcined at 923 K. The as-synthesized sample showed big surface area of 146.78 m2/g and large pore volume of 0.23 cm3/g. With the increase of calcination temperature, the surface area and pore volume of the samples decreased significantly, and the pore size increased accordingly.

scholarly journals Template-free hydrothermal synthesis of MgWO4 nanoplates and their application as photocatalysts

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2567-2571 ◽  
Author(s):  
Jie Meng ◽  
Tao Chen ◽  
Xiao Wei ◽  
Jixue Li ◽  
Ze Zhang
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrogen Evolution ◽  
Photocatalytic Hydrogen Evolution ◽  
Template Free ◽  
Ability To Drive ◽  
Photocatalytic Applications

As a semiconductor, MgWO4 has a potential in photocatalytic applications; however, it has been overlooked in previous studies; in this study, it has been demonstrated that MgWO4 exhibits the ability to drive photocatalytic hydrogen evolution.

Hydrothermal Synthesis of Zn2(MoO4)(SeO3) and Photocatalytic Applications

2013 ◽  
Vol 385-386 ◽  
pp. 16-18
Author(s):  
Yan Zhong Zhen ◽  
Dan Jun Wang ◽  
Feng Fu ◽  
Gang Lin Xue
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Process ◽  
Experimental Result ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Photocatalytic Applications ◽  
Simple Hydrothermal Process

A novel mixed metal molybdates, Zn2(MoO4)(SeO3) 1 has been synthesized by a simple hydrothermal process. Samples obtained are characterized using powder and single crystal X-ray diffraction (XRD), transmission electron microscopy (TEM). Furthermore, the photocatalytic performances of samples obtained are investigated for degradation of RhB under visible light irradiation. photocayalysis experimental result has illustrated that the compound exhibits good photocatalysis.

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