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NiMoO4纳米颗粒的溶胶-凝胶法合成及其组织、形貌、光学、磁学和光催化性能 预览

Synthesis of NiMoO4nanoparticles by sol-gel method and their structural,morphological,optical,magnetic and photocatlytic properties
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摘要 采用溶胶-凝胶法合成钼酸镍(NiMoO4)纳米颗粒。以水作为溶剂使所得产品具有纳米晶结构。使用X射线衍射、能量分散X射线分析(EDX)和傅里叶转换红外光谱等手段对纳米晶进行结构表征。使用扫描电镜和透射电镜对纳米晶颗粒的尺寸大小和形貌进行观察。结果表明,所得纳米颗粒和纯度较高,为单相单斜结构。采用紫外-可见漫反射光谱(UV-Vis-DRS)和光致发光测量法研究室温下产品的光学性能。采用振动样品磁强计(VSM)研究样品的磁性能。结果显示,所得样品具有超顺磁行为。考察了NiMnO4样品的光催化活性。结果显示,添加TiO2能提高NiMnO4的光催化活性。测定了催化剂NiMnO4、TiO2和NiMoO4-TiO2纳米颗粒对4-氯酚(4-CP)的光催化降解行为。光催化降解结果显示,NiMoO4-TiO2纳米颗粒的光催化降解效率高于NiMnO4和TiO2的。 Nickel molybdate(NiMoO4)nanoparticles(NPs)were synthesized by sol-gel method.Utilizing water as solvent providescrystalline nanostructures.These nanocrystals were structurally characterized by X-ray diffraction,energy dispersive X-ray analysis(EDX),and Fourier transform infrared spectra.Compositional stoichiometry was confirmed by EDX technique.The size and shapewere observed by scanning electron microscopy(SEM)and transmission electron microscope(TEM).It was found that the obtainedNPs were pure and single phase crystalline with monoclinic structure.The optical properties were studied by ultraviolet-visiblediffuse reflectance spectroscopy(UV-Vis-DRS)and photoluminescence(PL)measurements at room temperature.The magneticproperties were studied by vibrating sample magnetometer(VSM)and results showed superparamagnetic behavior of the obtainednanoparticles.Photocatalytic activity of NiMoO4was studied.The photocatalytic activity of NiMoO4was enhanced with the additionof TiO2.The catalysts NiMoO4,TiO2and NiMoO4-TiO2nanocomposites(NC)were tested for photocatalytic degradation(PCD)of4-chlorophenol(4-CP).It was found that PCD efficiency of NiMoO4-TiO2NC was higher than that of pure NiMoO4and TiO2.
作者 V.UMAPATHY P.NEERAJA A.MANIKANDAN P.RAMU V.UMAPATHY;P.NEERAJA;A.MANIKANDAN;P.RAMU;Research and Development Centre,Bharathiar University;Caplin Point Laboratories Limited;Department of Chemistry,NKR Government Arts College for Women;Department of Chemistry,Bharath Institute of Higher Education and Research,Bharath University;Department of Chemistry,Meenakshi Academy of Higher Education and Research;
出处 《中国有色金属学报:英文版》 SCIE EI CAS CSCD 2017年第8期1785-1793,共9页 Transactions of Nonferrous Metals Society of China
基金 support from the Caplin Point Laboratories Limited,Chennai,India
关键词 NiMnO4 TiO2 纳米结构 溶胶-凝胶合成 光学性能 磁学性能 光催化 单斜结构 NiMoO4 TiO2 nanostructure sol-gel synthesis optical properties magnetic properties photo-catalysis monoclinic structure
作者简介 Corresponding author: P. NEERAJA; Tel: +91-9487819133; E-mail: researchneeraja@gmail.com
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