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A Green, Simple Chemical Route for the Synthesis of Pure Nanocalcite Crystals

机译:绿色,简单的化学路线,用于合成纯纳米方解石晶体

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摘要

A new, simple chemical route was developed for the synthesis of pure nanocalcite crystals by controlling the reaction of an aqueous solution of CaO and CO2 gas. Results revealed formation of well-defined and pure nanocalcite crystals with controlled crystallite and particle size, without additives or organic solvents. The crystallite and particle size can be controlled, and smaller sizes are obtained by decreasing the CaO concentration and increasing the CO2 flow rate. The decrease of crystallite and particle size below a certain threshold provides the nanocalcite crystal signature characteristics that can be clearly observed in XRD patterns, TEM images, FTIR spectra, Raman spectra, XPS spectra, and thermal stability measurements.
机译:通过控制CaO和CO2气体水溶液的反应,开发了一种新的简单化学路线来合成纯纳米方解石晶体。结果表明,形成了定义明确且纯净的纳米方解石晶体,且晶体和粒径得到控制,而没有添加添加剂或有机溶剂。可以控制微晶和粒径,并且通过降低CaO浓度和增加CO2流量可以获得较小的粒径。微晶和粒径的减小低于一定阈值提供了纳米方解石晶体特征,可以在XRD图谱,TEM图像,FTIR光谱,拉曼光谱,XPS光谱和热稳定性测量中清楚地观察到。

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