The formation and growth of calcium sulfate crystals through oxidation of SO2 by O-3 on size-resolved calcium carbonate
文献类型：期刊论文
| 作者 | Zhang, Ying1,2; Tong, Shengrui1; Ge, Maofa1,2,3; Jing, Bo1; Hou, Siqi1,2; Tan, Fang1,2; Chen, Yi1,2; Guo, Yucong1; Wu, Lingyan4,5 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:29页码:16285-16293 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c8ra02050g |
| 英文摘要 | Calcium sulfate is a major constituent of atmospheric sulfate, with a typical rod-like morphology ranging from several hundred nanometers to approximately two micrometers observed in field studies. However, the chemical formation mechanism is still not well known. In this study, the kinetics and mechanism for the formation and growth of rod-like calcium sulfate crystals through oxidation of SO2 by O-3 on size-resolved CaCO3 at different relative humidity (RH) were investigated using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and scanning electron microscopy (SEM). We found that the concentration and formation rate of sulfate decreased with the increasing diameter of CaCO3 particles, and thus smaller particles could enhance the formation of sulfate due to more reactive sites on smaller particles. The rod-like calcium sulfate crystals were formed only at RH above 60% and in the presence of reactant gases through the heterogeneous pathway. The liquid-like water layer formed by promotion of high RH in the presence of reactant gases could facilitate the formation and aggregation of calcium sulfate hydrates and thus promote the formation and growth of rod-like calcium sulfate crystals. This study provides a possible mechanism for the formation and growth of rod-like calcium sulfate crystals existing in the atmosphere. |
| 语种 | 英语 |
| WOS记录号 | WOS:000431814200051 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43139]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Tong, Shengrui; Ge, Maofa |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CAS Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China 4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China 5.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, CMA, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ying,Tong, Shengrui,Ge, Maofa,et al. The formation and growth of calcium sulfate crystals through oxidation of SO2 by O-3 on size-resolved calcium carbonate[J]. RSC ADVANCES,2018,8(29):16285-16293. |
| APA | Zhang, Ying.,Tong, Shengrui.,Ge, Maofa.,Jing, Bo.,Hou, Siqi.,...&Wu, Lingyan.(2018).The formation and growth of calcium sulfate crystals through oxidation of SO2 by O-3 on size-resolved calcium carbonate.RSC ADVANCES,8(29),16285-16293. |
| MLA | Zhang, Ying,et al."The formation and growth of calcium sulfate crystals through oxidation of SO2 by O-3 on size-resolved calcium carbonate".RSC ADVANCES 8.29(2018):16285-16293. |
入库方式： OAI收割
来源：化学研究所
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