Synthesis of NiMoO_4 nanoparticles by sol-gel method and their structural,morphological,optical,magnetic and photocatlytic properties  

NiMoO_4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（英文）

作　　者：V.UMAPATHY P.NEERAJA A.MANIKANDAN P.RAMU V. UMAPATHY;P. NEERAJA;A. MANIKANDAN;P. RAMU(Research and Development Centre, Bharathiar University, Coimbatore, Tamil Nadu 641046, India;Caplin Point Laboratories Limited, Chennai 600017, India;Department of Chemistry, NKR Government Arts College for Women, Namakkal, Tamil Nadu 637001, India;Department of Chemistry, Bharath Institute of Higher Education and Research,Bharath University, Chennai 600073, India;Department of Chemistry, Meenakshi Academy of Higher Education and Research,Chennai, Tamil Nadu 600078, India)

机构地区：[1]Research and Development Centre,Bharathiar University,Coimbatore,Tamil Nadu 641046,India [2]Caplin Point Laboratories Limited,Chennai 600017,India [3]Department of Chemistry,NKR Government Arts College for Women,Namakkal,Tamil Nadu 637001,India [4]Department of Chemistry,Bharath Institute of Higher Education and Research,Bharath University,Chennai 600073,India [5]Department of Chemistry,Meenakshi Academy of Higher Education and Research,Chennai,Tamil Nadu 600078,India

出　　处：《Transactions of Nonferrous Metals Society of China》2017年第8期1785-1793,共9页中国有色金属学报（英文版）

基　　金：support from the Caplin Point Laboratories Limited,Chennai,India

摘　　要：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.采用溶胶-凝胶法合成钼酸镍(NiMoO_4)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NiMnO_4样品的光催化活性。结果显示,添加TiO_2能提高NiMnO_4的光催化活性。测定了催化剂NiMnO_4、TiO_2和NiMoO_4-TiO_2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,NiMoO_4-TiO_2纳米颗粒的光催化降解效率高于NiMnO_4和TiO_2的。

关 键 词：NiMoO4 TiO2 NANOSTRUCTURE sol-gel synthesis optical properties magnetic properties PHOTO-CATALYSIS monoclinic structure 

分 类 号：TB383.1[一般工业技术—材料科学与工程]