Al3+掺杂对花状氧化锌微结构形貌和气敏性能的影响

摘要

Flowerlike ZnO nanostructure was synthesized via a co-precipitation method by using Zn(NO3)2·6H2O,Al(NO3)3 and (CH2)6N4 as reactants,PEG400 as a surfactant.The obtained ZnO nanostructures can be tuned by the added Al3+ in the above process,resulting in an increase of gas-sensing response.The gas-sensing response of 0.3wt％ Al3+-doped ZnO nanostructure reaches 28 to an ethanol concentration of 0.200 mL·L-1,with a response time of only 12 s at the working temperature of 350 ℃.%利用Zn(NO3)2·6H2O 、Al(NO3)3和(CH2)6N4为反应物,PEG400为表面活性剂,通过共沉淀法制备了Al3+掺杂的花状氧化锌纳米棒结构.Al3+掺杂会调控所得氧化物的微结构,提高材料的气敏性能.在350C工作温度下,掺杂0.3wt％Al3+的花状氧化锌微结构对0.200 mL· L-1乙醇的灵敏度达28,响应时间仅12s.