在乙二醇-水二元体系中控制合成凸透镜状碳酸钙
Ethylene Glycol-Water Binary System Control Synthesis of Convex Lens-Like Calcium Carbonate
摘 要
以无水氯化钙和尿素为原料、乙二醇-水为溶剂,在未加入其它有机大分子调控剂的条件下,采用低温溶剂热法制备出了尺寸均匀、形貌规整的凸透镜状碳酸钙,研究了Ca2+浓度和水洗陈化时间对碳酸钙形貌的影响;在水体系、乙醇-水体系及丙三醇-水体系中制备了碳酸钙,考察了醇类体系对碳酸钙形貌的影响;最后探讨了凸透镜状碳酸钙的形成机理。结果表明:凸透镜状碳酸钙的晶型主要为球霰石,并有部分方解石;醇类分子结构对碳酸钙的相结构、形貌起着关键性作用;增加Ca2+浓度会导致凸透镜状碳酸钙颗粒表面粗糙化;延长水洗陈化时间会使凸透镜状碳酸钙空心化,甚至造成颗粒溶解-重构。
溶剂热法
乙二醇-水二元体系
convex lens-like calcium carbonate
solvothermal method
ethylene glycol-water binary solution
Abstract
Without adding macromolecular organic matter as control agent,convex lens-like calcium carbonate particles with uniform size,regular morphology were synthesized via the low-temperature solvothermal method using anhydrous calcium chloride and urea as raw materials and ethylene glycol-water as the solvent. The effects of Ca2+ concentration and aging time on calcium carbonate′s images were studied. In order to research the influence of alcohols solvent system on calcium carbonate′s image,calcium carbonates were also produced by water,alcohol-water solution and glycerol-water solution with same process. At last,the formation mechanism of convex lens-like calcium carbonate was discussed. The results show that the convex lens-like calcium carbonate mainly consisted of vaterite mixed with part of calcite. The molecular structure of the alcohols plays a key role in controlling of the phase structure and image of calcium carbonate. Increasing Ca2+ concentration make the surface of convex lens-like calcium carbonate rough. With the elongation of aging time,the convex lens-like calcium carbonate gradually develop into a hollow structure and finally dissolution-recrystallization.
中图分类号 TB332
所属栏目 新材料新工艺
基金项目 国家自然科学基金资助项目(51275167,51205125);湖南科技大学研究生创新基金项目(S130017)
收稿日期 2013/10/21
修改稿日期 2014/8/25
网络出版日期
作者单位点击查看
备注吴浩然(1987-),男,湖南邵阳人,硕士研究生。
引用该论文: WU Hao-ran,CHEN You-ming,GUO Yuan-jun. Ethylene Glycol-Water Binary System Control Synthesis of Convex Lens-Like Calcium Carbonate[J]. Materials for mechancial engineering, 2015, 39(1): 52～57
吴浩然,陈友明,郭源君. 在乙二醇-水二元体系中控制合成凸透镜状碳酸钙[J]. 机械工程材料, 2015, 39(1): 52～57
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【3】韩朋,井晓静,沈湘黔,等. 氧化石墨烯、短切碳纤维改性聚偏氟乙烯复合膜的摩擦磨损及介电性能［J］.机械工程材料,2013,37(2):53-56.
【4】张海军,刘小萍,葛培林,等. 不同温度下多层结构TiCN/TiC/TiN镀层的摩擦学行为［J］.机械工程材料,2012,36(1):41-44.
【5】WANG J,CHENG Q,TANG Z. Layered nanocomposites inspired by the structure and mechanical properties of nacre［J］.Chemical Society Reviews,2012,41(3):1111-1129.
【6】肖宇鹏,赵旭,赵丽娜,等. 以L-组氨酸为模板仿生合成针状纳米碳酸钙［J］.高等学校化学学报,2009,30(3):530-533.
【7】刘炳杉,邹海峰,龚丽娜,等. 微米级球形碳酸钙的合成与表征［J］.吉林大学学报:理学版,2013,51(4):715-719.
【8】齐利民,李洁,马季铭. 醇-水混合溶剂中双亲水嵌段共聚物对CaCO3粒子形貌的调控［J］.高等学校化学学报,2002,23(8):1595-1597.
【9】TANG H,YU J,ZHAO X. Controlled synthesis of crystalline calcium carbonate aggregates with unusual morphologies involving the phase transformation from amorphous calcium carbonate［J］.Materials Research Bulletin,2009,44(4):831-835.
【10】HUANG F,SHEN Y,XIE A,et al. Controlled deposition and transformation of amorphous calcium carbonate thin films［J］.Crystal Research and Technology,2009,44(8):818-822.
【11】崔洪梅,刘宏,王继扬,等. 纳米粉体的团聚与分散［J］.机械工程材料,2004,28(8):38-41.
【12】RAO M S. Kinetics and mechanism of the transformation of vaterite to calcite［J］.Bull Chem Soc Jpn,1973,46:1414-1417.
【13】MANOLI F,DALAS E. Spontaneous precipitation of calcium carbonate in the presence of ethanol,isopropanol and diethylene glycol［J］.Journal of Crystal Growth,2000,218(2):359-364.
【14】LENG B,JIANG F,LU K,et al. Growth of calcium carbonate mediated by slowly released alginate［J］.Cryst Eng Comm,2010,12(3):730-736.
【15】SARKAR A,MAHAPATRA S. Synthesis of all crystalline phases of anhydrous calcium carbonate［J］.Crystal Growth & Design,2010,10(5):2129-2135.
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