Herein, we report a simple but effective chemical approach for the synthesis of size-tunable ZnO nanotapes by precipitation method in the presence of phytochemicals present in the flower extract of Lantana camara plant. The electron microscopic study confirmed that the size of ZnO nanotapes can be systematically controlled by varying the concentration of either flower extract or metal ions and the flower extract played the key role in controlling the growth of ZnO nanotapes. The phase and crystalline analysis was carried out by X-ray diffraction method which indicated that ZnO nanostructures are highly crystalline in nature and are free from any impurities. The synthesized ZnO nanostructures exhibited interesting optical properties as investigated by UV–vis absorption and photoluminescence spectroscopy. Further the surface functionalities affect the optical properties of ZnO nanostructures which possess relatively strong UV emissions; a blue emission and a green emission. The synthesized ZnO nanostructures showed excellent catalytic properties in the ipso-hydroxylation of different aryl/ hetero-arylboronic acid to phenol in a relatively greener reaction conditions. These catalysts are highly stable and are re-usable upto six cycles of ipso-hydroxylation without losing its catalytic properties.

在这里，我们报告了一种简单但有效的化学方法，用于通过沉淀方法在马Lan丹（Lantana camara）花提取物中存在的植物化学物质的存在下合成尺寸可调的ZnO纳米带。植物。电子显微镜研究证实，可以通过改变花提取物或金属离子的浓度来系统地控制ZnO纳米带的大小，而花提取物在控制ZnO纳米带的生长中起着关键作用。通过X射线衍射法进行了相和晶体分析，这表明ZnO纳米结构本质上是高度结晶的并且没有任何杂质。合成的ZnO纳米结构表现出令人感兴趣的光学性质，通过紫外可见吸收和光致发光光谱法进行了研究。此外，表面功能会影响具有较强UV发射的ZnO纳米结构的光学性能。蓝色发射和绿色发射。合成的ZnO纳米结构显示出优异的催化性能。在相对较绿的反应条件下，不同的芳基/杂芳基硼酸经ipso-羟基化生成苯酚。这些催化剂是高度稳定的，并且在不损失其催化性能的情况下，最多可以重复使用六个ipso-羟基化循环。