水热法制备Nd^(3+)掺杂纳米三氧化钨材料及气敏性能研究  

Hydrothermal synthesis and gas-sensing properties of Nd^(3+) doped WO_3 nanaomaterials

作　　者：桂阳海[1,2] 王伟民[1] 田俊峰[1] 赵建波[1] 谢冰[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450002 [2]郑州轻工业学院功能材料研究所

出　　处：《无机盐工业》2015年第10期15-18,共4页Inorganic Chemicals Industry

基　　金：国家自然科学基金(21371158);河南省高等学校青年骨干教师资助计划项目(2011GGJS-102);河南省科技厅基金项目(122300410299);郑州市科技攻关项目(121PPTGG362-3)

摘　　要：以柠檬酸为辅助剂,采用水热法合成纳米三氧化钨,并原位水热合成了Nd3+掺杂量为1.0%、3.0%、5.0%、10.0%的纳米三氧化钨材料。用XRD、TG-DTA和SEM等方法对合成的纳米三氧化钨材料进行了结构表征。结果显示,制得的纳米三氧化钨材料为正交晶相,纯纳米三氧化钨形貌为四方形纳米盘。Nd3+掺杂可以提高纳米三氧化钨对硫化氢的灵敏度,Nd3+掺杂量为1.0%的综合效果最好,工作电压可低至2.00 V,硫化氢体积分数为2×10-6时,灵敏度可达15.65。The materials of Nd^3＋（ 1.0%, 3.0% ,5.0%, and 10.0% ） doped nano-sized WO3 were synthesized by hydrothermal method and in-situ hydrothermal method, respectively, with citric acid as the accessory ingredient.The as-synthesized samples were characterized by X-ray powder diffraction （XRD）, TG-DTA, and scanning electronic microscopy （SEM）.Results illus- trated that the synthesized WO3had orthorhombic phase and the nano-sized squareplate-like morphology.Nd dopant could im- prove the sensitivity of nanostructured WO3 to H2S gas and the Nd^3＋（doped amount to 1.0% ） sample had the best comprehensive effect whose working voltage can be as low as 2.00 V and the sensitivity could reach 15.65 for H2S of 2×10^-6（volume fraction）.

关 键 词：纳米WO3 Nd3+掺杂 水热 气敏 

分 类 号：TQ136.13[化学工程—无机化工]