Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 600034, India.
Materials Division, School of Advanced Sciences, Vellore Institute of Technology University, Chennai Campus, Chennai 600127, India.
J Environ Sci (China). 2013 Oct 1;25(10):2157-67. doi: 10.1016/s1001-0742(12)60277-0.
A novel self-assembled pure and Mg doped ZnO nano-particles (NPs) were successfully synthesized by a simple low temperature co-precipitation method. The prepared photocatalysts were characterized by X-ray diffraction, high resolution scanning electron microscopy, high resolution transmission electron microscopy, diffuse reflectance spectroscopy and photoluminescence (PL) spectroscopy. The results indicated that the prepared photocatalysts showed high crystallinity with a uniform size distribution of the NPs. The degradation of cholorphenols is highly mandatory in today's scenario as they are affecting the environment adversely. Thus, the photocatalytic degradation of 4-chlorophenol (4-CP), a potent endocrine disrupting chemical in aqueous medium was investigated by both pure and Mg-doped ZnO NPs under UV-light irradiation in the present study. The influence of the Mg content on the structure, morphology, PL character and photocatalytic activity of ZnO NPs were investigated systematically. Furthermore,the effect of different parameters such as 4-CP concentration, photocatalyst amount, pH and UV-light wavelength on the resulting photocatalytic activity was investigated.
一种新型的自组装纯 ZnO 和 Mg 掺杂 ZnO 纳米粒子（NPs）通过简单的低温共沉淀法成功合成。所制备的光催化剂通过 X 射线衍射、高分辨率扫描电子显微镜、高分辨率透射电子显微镜、漫反射光谱和光致发光（PL）光谱进行了表征。结果表明，所制备的光催化剂具有高结晶度，NPs 的尺寸分布均匀。在当今的情况下，氯酚的降解是非常必要的，因为它们会对环境产生不利影响。因此，本研究在 UV 光照射下，通过纯 ZnO 和 Mg 掺杂 ZnO NPs 对水中的强内分泌干扰化学物质 4-氯酚（4-CP）进行了光催化降解。系统研究了 Mg 含量对 ZnO NPs 的结构、形态、PL 特性和光催化活性的影响。此外，还研究了不同参数，如 4-CP 浓度、光催化剂用量、pH 值和 UV 光波长对光催化活性的影响。
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