摘要
采用水热法制备了三维分级微纳结构ZnO微球,研究了柠檬酸三钠的添加量对ZnO的结构和气敏性能的影响。结果表明,随着柠檬酸三钠添加量的增加,ZnO逐渐由纳米棒状变为分级结构微球,比表面积也随之显著增加。当柠檬酸三钠添加量为0.3 g时,ZnO微球在180℃的最佳工作温度下,对0.01%正丁醇气体的灵敏度高达209.8,且具有较快的响应速度和较好的气体选择性,并进一步对ZnO分级微球的气敏响应机制进行了讨论。
Three-dimensional hierarchical ZnO microspheres were synthesized by hydrothermal method,and the effect of trisodium citrate addition on microstructure and gas sensing properties for ZnO was also explored.The results indicated that,with the increase of trisodium citrate dosage,the growth morphology of ZnO experienced a transition from rod shape to microsphere shape,and the specific surface area was obviously increased.When the addition amount of trisodium citrate was 0.3 g,the sensitivity of the ZnO gas sensor to 0.01%n-butanol was 209.8 at the optimum working temperature of 180℃,and it had rapid response and good selectivity.And the gas sensing mechanism of the hierarchical ZnO microspheres was also studied.
作者
李汪龙
董宏坤
付秋明
LI Wang-long;DONG Hong-kun;FU Qiu-ming(Hubei Key Laboratory of Plasma Chemical and Advanced Materials,School of Material science and Engineering,Wuhan Institute of Technology,Wuhan Hubei 430205,China)
出处
《辽宁化工》
CAS
2022年第3期321-324,共4页
Liaoning Chemical Industry
关键词
ZNO
分级微球
正丁醇
气敏性能
ZnO
Hierarchical microspheres
N-butanol
Gas sensing property
