Al³⁺-doped ZnO micro–nanospheres (AZO MNSs) were obtained in the method of collochemistry at a low cost, and the effects of the concentration of Al³⁺ on morphology, structural and gas-sensitive properties of the AZO MNSs were investigated. It was found that Al³⁺ doping reduced the particle size distribution of the MNSs and, in addition, also significantly enhanced the gas sensitivity of sensors which are based on ZnO MNSs. Sensor based on A1ZO MNSs showed the best response property for detection of carbon monoxide. Meanwhile, the response/recovery property of A1ZO MNSs and A1ZO nanoparticles (NPs) sensors was also compared and discussed. The sensor based on A1ZO MNSs exhibited a rapider response than A1ZO NPs ones did due to its less grain boundaries.

采用共化学方法以低成本获得了掺Al ^3+的ZnO微纳米球（AZO MNS），并研究了Al ³⁺的浓度对AZO MNS的形貌，结构和气敏性能的影响。 。发现Al ³⁺掺杂降低了MNS的粒度分布，此外，还显着提高了基于ZnO MNS的传感器的气体敏感性。基于A1ZO MNS的传感器对检测一氧化碳表现出最好的响应性能。同时，还对AlZOMNS和NPZO传感器的响应/恢复特性进行了比较和讨论。基于A1ZO MNS的传感器由于其晶界较少，因此比A1ZO NPs表现出更快的响应。