采用柠檬酸盐热解法制备V掺杂纳米ZnFe2O4,研究了V掺杂对ZnFe2O4的物相结构、厚膜电阻特性和对苯及其衍生物蒸汽气敏特性的影响.结果发现:V掺杂ZnFe2O4的物相单一;施主掺杂剂V大大降低了厚膜元件的电阻,并随掺杂量的增加,电阻逐渐下降;V掺杂还显著提高其对苯及其衍生物的高温敏感性.
Raw powder of ZnFe2O4 and V-doped ZnFe2O4 were obtained by the citrate pyrolysis, and the effect of V doping on phase constituents, resistance-temperature behavior and gas-sensing properties to benzene and its derivatives were studied. The results demonstrate that as the increase of V doping amount, raw powder is the spinel structure, the resistance of ZnFe2O4 sensor decrease, and the sensitivity to benzene and its derivatives at higher operating temperature increase.