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Abstract In this paper, well-defined polyhedral Cu2O crystals with different shapes were achieved by using different copper salts (including copper sulfate, copper chloride and copper acetate) and glucose as reactants.… Click to show full abstract
Abstract In this paper, well-defined polyhedral Cu2O crystals with different shapes were achieved by using different copper salts (including copper sulfate, copper chloride and copper acetate) and glucose as reactants. The growth process and formation mechanism were discussed in detail. The results indicated that at a low pH value, Cu4(OH)6(SO4), Cu2(OH)3Cl and CuO precursors were generated when CuSO4, CuCl2 and Cu(CH3COO)2 were used as reactants respectively. With the increase of pH value, the precursors decomposed and converted into Cu2O crystals with truncated octahedroal, octahedroal and cubic shapes in turn. In the formation of Cu2O crystal copper salt anions acted as the capping agents. According to the action of the charge, radius and concentration of the anion, the adsorption of anions on {111} facets follow the order: CH3COO−
Journal Title: Solid State Sciences
Year Published: 2020
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