【摘要】 以醋酸锌和六次甲基四胺为原料在不同的溶液环境中,采用水热法或热溶液法合成了不同形貌的微纳氧化锌。氧化锌形貌和尺寸的控制对合成环境有强烈的依赖。通过化学吸附将乙二胺四乙酸二钠和柠檬酸吸附在氧化锌的极性面上,可以抑制极性面的晶体生长,调控氧化锌的晶体形貌。这种选择吸附性导致了样品形貌的不同。拉曼光谱测试结果表明,在柠檬酸溶液中合成的氧化锌的晶粒更小。光致发光光谱测试结果表明,所得到的氧化锌的发光是激子和缺陷发光。更多还原

【Abstract】 Micro / nano-sized ZnO crystals with different shapes were fabricated by a simple hydro / solvothermal method using zinc acetate and methenamine as precursors. The morphology and size of ZnO crystals are strongly dependent on synthetic conditions. The growth of the polar plane can be suppressed due to the ethylenediaminetetraacetic acid disodium salt and citric acid compound selective adsorbing on the polar plane facets by the chemical adsorption. The selective adsorption makes the shape of ZnO crystal be tunable. Raman spectra confirm that grain size is smaller as ZnO synthesized in citric acid solution. The photoluminescence shows the transitions of exciton and defects in ZnO.更多还原