李继男,颜士航,李 根,王 亚,徐红燕,段广彬

(济南大学材料科学与工程学院,山东济南250022)

引用格式：李继男,颜士航,李根,等.核壳结构ZIF-8@In₂O₃纳米棒的制备及其对NO₂选择性的提升作用[J].中国粉体技术,2023,29(3)：101-109.

LI J N,YAN S H,LI G,et al.Synthesis of core-shell ZIF-8@In₂O₃ nanorods and enhancement of selectivity to NO₂[J].China Powder Science and Technology,2023,29(3)：101-109.

DOI：10.13732/j.issn.1008-5548.2023.03.010

收稿日期： 2023-02-01,修回日期：2023-03-17，在线出版时间：2023-04-21 10:46。

基金项目：国家自然科学基金项目,编号：62171199。

第一作者简介：李继男(1998—),男,硕士研究生,研究方向为气敏传感器。E-mail：15106322014@163.com。

通信作者简介：

徐红燕(1976—),女,教授,博士,硕士生导师,研究方向为半导体材料与器件。E-mail：mse_xuhy@ujn.edu.cn。

段广彬(1983—),男,教授,博士,硕士生导师,研究方向为新能源工程。E-mail：mse_duangb@ujn.edu.cn。

摘要： 为了快速准确检测到有毒有害气体NO₂,以水热法合成沸石咪唑酯骨架 (zeolitic imidazolate frameworks,ZIF)-8复合In₂O₃纳米棒状复合材料(ZIF-8@In₂O₃),并加工制作成气敏传感器,以检测对NO₂的灵敏度和选择性。利用扫描电镜、透射电镜、比表面积分析技术对ZIF-8@In₂O₃的形貌和结构进行表征,测试复合材料作为传感器的气敏性能。结果表明：成功制备出具有核壳结构的ZIF-88@In₂O₃纳米棒复合材料,在最佳工作温度为220 ℃时,相比于纯In₂O₃对体积分数为5×10^-5的NO₂的灵敏度223,ZIF-8@In₂O₃的达到254;在三乙胺(triethylamine,TEA)作为干扰性气体的条件下,相比纯In₂O₃的选择性3.69,ZIF-88@In₂O₃的提升到5.81,抗湿性能也较好。

关键词： 氧化铟;沸石咪唑酯骨架材料;纳米棒;水热法;气敏

Abstract：In order to quickly and accurately detect NO₂ as a harmful gas,a hydrothermal method for synthesizing zeolitic imidazolate frameworks-8 material composite In₂O₃ nanorods (ZIF-8@In₂O₃)and preparing the gas sensor was reported.The morphology and structure of ZIF-8@In₂O₃ were characterized by scanning electron microscope,transmission electron microscope and specific surface analysis,and the gas-sensing performance of these materials were tested.The results show that ZIF-8@In₂O₃ nanorods with core-shell structure have been successfully synthesized.At the optimum operating temperature of 220 ℃,compared with 223 of the sensitivity of pure In₂O₃ to 5×10^-5 of NO₂,the sensitivity of ZIF-8@In₂O₃ reaches 254.Under the condition of triethylamine (TEA) as the interference gas,the selectivity of 5.81 of ZIF-8@In₂O₃ is greatly improved than 3.69 of pureIn₂O₃,and it also has good moisture resistance.

Keywords：indium oxide;zeolite imidazole ester framework material;nanorods;hydrothermal synthesis;gas sensing

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