硅酸盐通报2025，Vol.44Issue(1)：195-201,242,8.DOI:10.16552/j.cnki.issn1001-1625.2024.0824
维生素C调控合成纯球霰石及其形成机理
Synthesis of Pure Vaterite Regulated by Vitamin C and Its Formation Mechanism
摘要
Abstract
In order to establish a process of synthesizing high purity vaterite calcium carbonate with calcium chloride as raw material and storing CO2,this paper used calcium chloride as calcium source,CO2 carbonization method and vitamin C as crystal form regulator to control the synthesis of vaterite.The products were characterized by X-ray diffractometer,Fourier transform infrared spectrometer,scanning electron microscope,etc.The effects of different concentrations of vitamin C on calcium carbonate crystals and morphology were studied,and the possible formation mechanism of vaterite under the regulation of vitamin C was discussed.The results show that vitamin C has a significant effect on stabilizing the crystalline form of vaterite.When vitamin C is not added,the product is a mixture of vaterite and calcite,while vaterite with a purity of 100％can be obtained by adding 0.1％(mass fraction)vitamin C.Moreover,with the increase of vitamin C concentration,the specific surface area of calcium carbonate increases from 3.63 m2/g to 11.62 m2/g,and the crystal size decreases from 1～3 μm to 0.3～0.6 µm.This study provides a simple,green,and low-cost method to prepare pure vaterite while safely and effectively sequestering CO2 greenhouse gases.关键词
球霰石/维生素C/碳酸钙/二氧化碳/晶型调控剂Key words
vaterite/vitamin C/calcium carbonate/carbon dioxide/crystal form regulator分类
化学化工引用本文复制引用
吴广武,白蓉,方虎,赵成,陈佩圆..维生素C调控合成纯球霰石及其形成机理[J].硅酸盐通报,2025,44(1):195-201,242,8.基金项目
安徽理工大学高层次人才科研基金(2022yjrc27) （2022yjrc27）
安徽省住房城乡建设科技计划项目(2022-YF071) （2022-YF071）
