中文摘要：

在醋酸锌-正丁胺-四氢呋喃/乙醇溶剂热体系中改变正丁胺用量和反应温度,实现了不同纵横比Zn O纳米锥的可控合成,使用扫描电子显微镜（SEM）、X射线衍射仪（XRD）、透射电子显微镜（TEM）及紫外-可见漫反射光谱（UV-Vis DRS）等手段对其形貌和结构进行表征,提出了Zn O纳米锥的生长机理。以甲基橙（MO）为目标降解物,研究了Zn O纳米锥的光催化活性。结果表明：与商业Zn O粉末相比,纳米锥表现出较高的反应活性。纵横比小的Zn O纳米锥具有的高催化活性,因为其结构中活性{001}晶面所占的比例较大。

英文摘要：

Zn O nano-cones with various aspect ratios were synthesized via a solvothermal reaction of zinc acetate with n-butylamine and tetrahydrofuran or ethanol by varying dosage of n-butylamine and temperature. The possible growth mechanism was proposed. The products were characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, transmission electron microscopy（TEM） and ultraviolet-visible diffuse reflectance spectroscopy（UV-vis DRS）. Photocatalytic activity of Zn O nano-cones in degradation of methyl orange（MO） was investigated, and the results show that Zn O nano-cones show superior photoreactivity, compared to Zn O powders as a benchmarking. The superior intrinsic photocatalytic activity can be attributed to the high percentage of exposed {001} facets of Zn O nano-cones with small aspect ratio.