전기화학적 프로세스에 의한 아라고나이트 결정구조 탄산칼슘 막의 형성 및 제어
Formation and Control of Calcium Carbonate Films having Aragonite Crystal Structure by Electro-Chemical Process
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Calcium carbonate(CaCO3) films were formed by an eco-friendly electro-chemical technique on steel substrates in synthesized distilled water solutions containing NaHCO3, CaCl2 and MgCl2 with different ratio respectively. It was investigated to confirm the effect of Mg2+ concentration by Scanning Electron Microscopy(SEM), Energy Dispersive x-ray Spectroscopy(EDS) and X-Ray Diffraction(XRD) respectively. From an experimental result, only calcite crystals were found in solution containing no Mg2+.By increasing concentration of Mg2+, deposition rate decreased and crystal structure was transformed form calcite to aragonite. In case of including MgCl2 300mM in synthesized solutions containing NaHCO3, CaCl2 60mM, it was showed over the 90% of aragonite contents which have quite high deposition rate of aragonite. Also, it was confirmed that Mg2+ acted as inhibitor on the films which made transforming from calcite to aragonite.
Abstract
Calcium carbonate(CaCO3) films were formed by an eco-friendly electro-chemical technique on steel substrates in synthesized distilled water solutions containing NaHCO3, CaCl2 and MgCl2 with different ratio respectively. It was investigated to confirm the effect of Mg2+ concentration by Scanning Electron Microscopy(SEM), Energy Dispersive x-ray Spectroscopy(EDS) and X-Ray Diffraction(XRD) respectively. From an experimental result, only calcite crystals were found in solution containing no Mg2+.By increasing concentration of Mg2+, deposition rate decreased and crystal structure was transformed form calcite to aragonite. In case of including MgCl2 300mM in synthesized solutions containing NaHCO3, CaCl2 60mM, it was showed over the 90% of aragonite contents which have quite high deposition rate of aragonite. Also, it was confirmed that Mg2+ acted as inhibitor on the films which made transforming from calcite to aragonite.
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