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首页> 外文期刊>Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical >Influence of template on synthesis of silica nanosphere using CaCO3
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Influence of template on synthesis of silica nanosphere using CaCO3

机译:模板对CaCO3合成二氧化硅纳米球的影响

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摘要

Synthesis of silica nanosphere is reported using tetrapropylammonium bromide and calcium carbonate as template for the first time.The physicochemical characteristics of the sample has been compared with the sample synthesized using cetyltrimethylammoniuin bromide and calcium carbonate.The results show that both the materials are similar,although mesoporosity appears only on the latter.The hollow sphere property is observed in calcined and 10 % dil.HCl treated samples.The weight loss due to calcium carbonate decomposition occurs at high temperature(800°C).Thermogravimetry/differential thermal analyses show that there is no organic amine inside the TPABr morphology and only a small amount(5 %)in CTABr sample.FT1R spectroscopic analysis shows the peak responsible for CaO~-in addition to the peak due to the T-O-T tetrahedral skeleton.Nitrogen adsorption does not show any significant result on the as-synthesized sample activated at 100 °C before adsorption.
机译:首次报道了以四丙基溴化铵和碳酸钙为模板合成二氧化硅纳米球。将样品的理化特性与十六烷基三甲基溴化铵和碳酸钙合成的样品进行了比较。结果表明,两种材料虽然相似,但介孔性仅在后者上出现。在煅烧的和10%的HCl处理的样品中观察到空心球的性质。在高温(800°C)下发生碳酸钙分解引起的重量损失。热重/差热分析表明存在在TPABr形态内没有有机胺,在CTABr样品中只有少量(5%)。FT1R光谱分析显示除了由TOT四面体骨架引起的峰外,还有负责CaO〜-的峰。氮吸附未显示任何吸附前在100°C活化的合成样品具有显着结果。

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