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Preparation and photocatalysis performance of strontium borate nano-powders by carbon adsorption

Chen Xiaoxia;Ma Xuelian;Guo Guibao;Guo Xiaohui;School of Chemistry and Chemical Engineering,Inner Mongolia University of Science and Technology;Environmental Protection Bureau of Huade County of Wulanchabu,Inner Mongolia;  
Nano-sized strontium borate powders(Sr B6O10) were prepared by carbon adsorption precipitation method.The Sr(Cl)2and ammonium pentaborate were taken as reactants.The calcination temperature,crystalline phase,particle size,and optical absorption properties of Sr B6O10 were characterized by means of thermogravimetric analysis-differential thermal analysis(TG-DTA),X-ray diffraction(XRD),transmission electron microscope(TEM),and UV-Vis spectroscopy.The results showed that adsorption of activated carbon could prevent powder′s agglomeration during the preparation,drying,and calcination process.The Sr B6O10 crystal had a good dispersion,average grain size was around 13 nm,and surface area was 83.26 m2/g at 600 ℃.The result of photocatalytic reaction for the degradation of Rhodamine B chloride under ultraviolet light radiation showed the degradation of Rhodamine B chloride on the strontium borate catalysis almost complete in 60 min.
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