New Shape-Controlled Nanocrystalline SrSiO₃ Photocatalyst: Template-Free Syntheses and Photocatalytic Activity

Abstract:

Nanocrystalline SrSiO₃ with different morphologies was first selectively prepared by a facile template-free solvothermal method at different water/ethanol volume ratios. The as-prepared samples were characterized by X-ray diffraction, N₂-sorption, field emission scanning electron microscopy. The results showed that the as-prepared samples SrSiO3 displayed nanoflakes in pure water while obtained nanofibres in mixed solvent of water and ethanol (the volume ratio of water to ethanol is 1:1.). The BET specific surface area of SrSiO₃ nanofibre is 161.7 m² g^-1, which is much higher than that of nanoflake one. The mechanisms about the formations of shape-controlled SrSiO₃ are proposed and discussed based on a reaction-crystallization process. As a novel photocatalyst, the photocatalytic activity of as-prepared samples SrSiO₃ were evaluated by the photocatalytic degradation of orange II (20 mg L^-1) and the total organic carbon (TOC) value indicated that orange II solution can be mineralized in 120 min.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 363-368
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.363
• Online since: January 2012
• Authors: Xiao Wei Wang, Shi Jing Liang, Wei Ming Wu, Guo Dong Liu, Shi Long Zhang, Hua Rong Zheng, Ling Wu
• Keywords: Photocatalysis, Shape-Controlled, Solvothermal Reaction, SrSiO₃

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