Synthesis of CaCO3 Nanoparticles by Carbonation of Lime Solutions in Reverse Micellar Systems

Abstract

Synthesis of CaCO3 nanoparticles by carbonation of lime solutions in reverse micellar systems Heeres, Hero; Jain, R.; Mehra, A.; Dagaonkar, M.V. pplication of reverse micelles for the synthesis of nano-sized calcium carbonate particles in different solvents (cyclohexane, decane and heptane) has been investigated. The effect of the mole ratio of water-to-surfactant (R) and type of solvent has been studied on the size and nature of the carbonate particles. The results indicate that an increase in water-to-surfactant ratio results in a larger particle size.

Calcium carbonate phase transformations during the carbonation reaction of calcium heavy alkylbenzene sulfonate overbased nanodetergents preparation

“…Giasson et al examined an overbased calcium sulfonate dispersion showing an average calcium carbonate core radius of 2.0 nm with a standard deviation of 0.4 nm by using SAXS [40]. Dagaonkar et al [41] investigated the influence of amount of water and dispersive media on the CaCO 3 nanoparticle size mediated by the surfactant 1,2-bis-(2-ethylhexyl-oxycarbonyl)-1-ethane sulfonate (AOT), colloid particles of diameter ranged from 25 nm to around 200 nm were produced mainly depending on the volume of water added.…”

“…The work of Kandori et al [14] and Roman et al [11] demonstrated that the microemulsion size thus the produced CaCO 3 particles increased with addition of water by light scattering characterization. Dagaonkar et al [41] and Sugih et al [54] found that high water-to-surfactant molar ratios led to the formation of larger nanoparticles in gas-reverse micellar systems through direct electron microscopy observation. Mann's group discovered the water-induced mesoscale phase transformation and morphologies change upon variant water-to-calcium carbonate ratio [46].…”

Synthesis, Characterization, scaling up and use of Calcium Carbonate Nanoparticles to prepare nanoporous PVC film

“…CaCO3 nanoparticles attract attention, due to their wide range application coating, plastic industry, paper, drug delivery, etc.CaCO3 nanoparticles have been produced using several methods; carbonization [1][2][3][4][5][6][7][8][9], tubular reactor [10], microemlusion [11][12][13][14][15], mechanochemical reaction by mechanical milling of CaCl2+ Na2CO3 powder mixture [16] and milling of calcite in presence of additive [17].…”

Surfactant directed synthesis of calcium aluminum layered double hydroxides nanoplatelets

“…13 There are many types of nanoparticles synthesised via this method such as metal nanoparticles (Pt, Rh, Pd, and Ir), metal oxide nanoparticles, and other Inorganic nanoparticles (CdS and CaCO 3 ). 14,15 O'Hare et al reported the first synthesis of a layered double hydroxide (LDH) using this approach. 16,17 In the present study, we report the synthesis of nanosized calcium aluminium LDHs in dodecylsulfate reverse micelles.…”