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为探讨氧化石墨烯复合材料的气敏性,以氧化石墨烯(GOs)、乙酸锌(C4H6O4Zn)、尿素(CO(NH_2)_2)为主要原料,采用水热法制备GOs/ZnO复合材料并研究其对乙醇气体的敏感性。以乙酸锌、尿素及GOs为原料,在无水乙醇体系中合成ZnO含量不同的GOs/ZnO复合材料,并对其进行XRD、SEM及FTIR表征及气敏性能的测试,研究讨论了温度、ZnO含量、乙醇浓度等各因素对复合材料敏感性的影响。结果表明,在工作温度为60℃时,氧化石墨烯/ZnO(ZnO含量为15%)具有乙醇最佳的气敏响应,显示了良好的气体敏感性,且GOs/ZnC复合材料有良好的长期使用性,可以用于检测乙醇的气体浓度。
In order to investigate the gas sensitivity of graphene oxide composites, GOs / ZnO composites were prepared by hydrothermal method using graphene oxide (GOs), zinc acetate (C4H6O4Zn) and urea (CO (NH_2) _2) as main raw materials Its sensitivity to ethanol gas. The GOs / ZnO composites with different ZnO contents were synthesized from anhydrous zinc acetate, zinc acetate, urea and GOs. Their properties were characterized by XRD, SEM, FTIR and gas sensing properties. The effects of temperature, ZnO Content, ethanol concentration and other factors on the sensitivity of composite materials. The results show that GO / ZnO (15% ZnO) possesses the best gas-sensing response to ethanol at 60 ℃ and shows good gas sensitivity, and the GOs / ZnC composites have good long-term Usability, can be used to detect the gas concentration of ethanol.