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Crystal Growth and Color Tuning of Large Mn(POOH)·3HO Crystals via an Evaporation-Assisted Aqueous Route at Room Temperature. | LitMetric
Large Mn(POOH)·3HO crystals have been prepared from aqueous solutions containing MnCl and (NH)HPO by an evaporation-induced crystal growth technique. The slow solvent evaporation at room temperature maintained the supersaturation of the precursor solution for a long time, resulting in the continuous growth of Mn(POOH)·3HO crystals. The addition of citric acid as a chelating agent and increasing the total volume of the precursor solutions helped to maintain the mild supersaturation conditions for a longer time period, and transparent, unbranched Mn(POOH)·3HO crystals above 2 mm in size were produced by aging for 8 weeks. The large Mn(POOH)·3HO single crystals exhibited a pink color, and the color became stronger by doping with Co ions.
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