Suresh D, Shobharani R M, Nethravathi P C, Pavan Kumar M A, Nagabhushana H, Sharma S C
Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, Karnataka, India.
Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, Karnataka, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Apr 15;141:128-34. doi: 10.1016/j.saa.2015.01.048. Epub 2015 Jan 30.
We report green synthesis of multifunctional ZnO nanoparticles (NPs) using Artocarpus gomezianus (AG) extract as fuel by solution combustion synthesis. The formation of NPs was confirmed by powder XRD, SEM, TEM and UV-Visible studies. The NPs were subjected for photoluminescence, photodegradative and antioxidant studies. XRD data reveals that the ZnO NPs possess wurtzite structure. UV-Visible spectrum shows absorbance maximum at 370 nm which corresponds to the energy band gap of 3.3 eV. Morphology studies indicate the highly porous nature of the NPs. PL spectra of NPs found to display very interesting blue, green and red emissions upon excitation at 325 nm. The NPs exhibit potential photocatalytic activity towards the degradation of methylene blue (MB) dye upon exposure to sun light and UV light. ZnO NPs found to have considerable antioxidant activity against DPPH (2,2-diphenyl-1-picrylhydrazyl) free radicals. The study successfully demonstrates a simple and eco-friendly method for the synthesis of efficient multifunctional ZnO nanoparticles using green synthetic approach.
我们报道了通过溶液燃烧合成法，以面包树提取物（AG）为燃料绿色合成多功能氧化锌纳米颗粒（NPs）。通过粉末X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外可见光谱研究证实了纳米颗粒的形成。对纳米颗粒进行了光致发光、光降解和抗氧化研究。XRD数据表明氧化锌纳米颗粒具有纤锌矿结构。紫外可见光谱显示在370nm处有最大吸收，对应于3.3eV的能带隙。形态学研究表明纳米颗粒具有高度多孔的性质。纳米颗粒的光致发光光谱发现在325nm激发下显示出非常有趣的蓝色、绿色和红色发射。纳米颗粒在暴露于太阳光和紫外光时对亚甲基蓝（MB）染料的降解表现出潜在的光催化活性。发现氧化锌纳米颗粒对2,2-二苯基-1-苦基肼（DPPH）自由基具有相当的抗氧化活性。该研究成功地展示了一种使用绿色合成方法合成高效多功能氧化锌纳米颗粒的简单且环保的方法。
