Al^(3+)掺杂对花状氧化锌微结构形貌和气敏性能的影响(英文)

Effect of Al^(3+) on Synthesis and Gas-Sensing Property of Flowerlike ZnO Nanostructure

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350℃工作温度下,掺杂0.3wt%Al3+的花状氧化锌微结构对0.200mL.L-1乙醇的灵敏度达28,响应时间仅12 s。

Flowerlike ZnO nanostructure was synthesized via a co-precipitation method by Using Zn（NO3）26H20, Al（NO3）3 and （CH2）6N4 as reactants, PEG400 as a suffactant. The obtained ZnO nanostructures can be tuned by the added A13＋ in the above process, resulting in an increase of gas-sensing response. The gas-sensing resp0nse of 0.3wt% A13＋-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 ℃