Cu掺杂WO_3纳米棒的制备及其对正丁醇的气敏响应  

Synthesis of Cu-doped WO_3 Nanorods and Its Response of n-Butanol Gas Sensing Performance

作　　者：吕超 王明辉 刘志强[1] 刘玉坤[1] 申小清[1] LYU Chao;WANG Ming-hui;LIU Zhi-qiang;LIU Yu-kun;SHEN Xiao-qing(School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学材料科学与工程学院,郑州450001

出　　处：《人工晶体学报》2018年第6期1237-1241,共5页Journal of Synthetic Crystals

摘　　要：通过水热法简易的制备出Cu掺杂WO_3纳米棒材料,并运用XRD、SEM、BET等手段对其物相、形貌和比表面积等进行了表征,并研究了其对正丁醇的气敏性能。气敏测试结果表明,所制备的Cu掺杂WO_3纳米棒材料对正丁醇具有良好气敏性能。当工作温度为400℃时,Cu掺杂WO_3材料对100ppm的正丁醇的响应达到了29,约为纯WO_3的3倍。同时,Cu掺杂WO_3材料对正丁醇的检测限可低至0.1ppm,并且对正丁醇还具有良好的选择性。最后对所制备的Cu掺杂WO_3材料进行了气敏机理解释。Pure and Cu-doped WO3 nanorods were synthesized simply by the hydrothermal method. The structure,morphology and specific surface area of the as-prepared producst were characterized by XRD,SEM and BET. The performance of the Cu-doped WO3 nanorods sensor to n-butanol was investigated. At the operating temperature of 400 ℃,the response of Cu-doped WO3 nanorods to 100 ppm n-butanol is 29,which is almost 3 times higher than that of pure WO3 nanorods. Meanwhile,the practical detection limit attained to n-butanol as low as 0. 1 ppm. Besides,the Cu-doped WO3 sensor exhibited good selectivity to n-butanol and excellent long-term stability. The mechanism of the Cu-doped WO3 nanorods gas sensing is also proposed.

关 键 词：WO3 水热法 铜掺杂 纳米棒 气敏 

分 类 号：TB381[一般工业技术—材料科学与工程]