Template-Free Hydrothermal Synthesis and Photocatalytic Performances of Novel Bi2SiO5 Nanosheets

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• 作者：Ruigen Chen ; Jinhong Bi ; Ling Wu ; Wanjun Wang ; Zhaohui Li ; Xianzhi Fu
• 刊名：Inorganic Chemistry
• 出版年：2009
• 出版时间：October 5, 2009
• 年：2009
• 卷：48
• 期：19
• 页码：9072-9076
• 全文大小：808K
• 年卷期：v.48,no.19(October 5, 2009)
• ISSN：1520-510X

文摘

Orthorhombic Bi₂SiO₅ nanosheets with thicknesses of 10−20 nm were first synthesized by a template-free hydrothermal synthesis process using Bi(NO₃)₃ and different Si sources as raw materials. The as-prepared samples were characterized by X-ray diffraction, Brunauer−Emmett−Teller (BET) surface area analysis, UV−vis diffuse reflectance spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, and a photoluminescence technique with terephthalic acid. The results showed that different precursors led to samples with different morphologies, particle sizes, and BET surface areas. As a novel photocatalyst, the photocatalytic performances of Bi₂SiO₅ samples were evaluated by the photocatalytic degradation of salicylic acid and gaseous benzene. The results revealed that the sample obtained from Na₂SiO₃ as a precursor exhibited higher activity than that from (C₂H₅O)₄Si due to its biscuit-like morphology, a smaller particle size, and a higher BET surface areas.