Au NP负载Co_(3)(HITP)_(2)@ZIF-67复合材料的制备及其室温下气敏特性  

Preparation and Gas Sensing Performance of Au NPs Loaded Co_(3)(HITP)_(2)Modified ZIF-67 Composites at Room Temperature

作　　者：何华玲 夏滔 熊长军 赵俊秀 胡珂祺 孙永娇 王文达[1] 胡杰[1] He Hualing;Xia Tao;Xiong Changjun;Zhao Junxiu;Hu Keqi;Sun Yongjiao;Wang Wenda;Hu Jie(Laboratory of Nano Energy and Devices,College of Electronic Information and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;MOE Key Laboratory of Coal Environmental Pathogenicity and Prevention,School of Public Health,Shanxi Medical University,Taiyuan 030001,China)

机构地区：[1]太原理工大学电子信息与光学工程学院纳米能源与器件实验室,太原030024 [2]山西医科大学公共卫生学院煤炭环境致病与防治教育部重点实验室,太原030001

出　　处：《微纳电子技术》2024年第9期47-53,共7页Micronanoelectronic Technology

基　　金：国家自然科学基金(62171308,62071432);山西省重点研发项目(202102030201002);山西省回国留学基金项目(2022-039);山西省自然科学基金项目(202203021221073,202303021222134);山西省高等学校科技创新项目(2023L059)。

摘　　要：采用水热法和化学还原法制备了Au纳米颗粒(NP)负载Co_(3)(HITP)_(2)@ZIF-67复合材料,利用扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)对所合成材料的微观形貌和晶相进行表征分析。同时,制备了基于Au NP负载Co_(3)(HITP)_(2)@ZIF-67复合材料的气体传感器件,研究了其在室温下对H_(2)S的气敏特性。测试结果表明,相比纯的ZIF-67气体传感器无法在室温下对H_(2)S进行气敏检测,负载Au纳米颗粒的Co_(3)(HITP)_(2)@ZIF-67复合材料的气体传感器在室温下对体积分数为20 ppm(1 ppm=1×10^(-6))的H_(2)S气体响应可达到2.7,响应/恢复时间分别为64 s/99 s,且具有较好的选择性、重复性和长期稳定性。Au nanoparticles(NPs)loaded Co_(3)(HITP)_(2)modified ZIF-67 composites(Au NPsCo_(3)(HITP)_(2)@ZIF-67)were prepared by hydrothermal and chemical reduction methods.The morphology and crystalline phases of the as-synthesized materials were characterized and analyzed by scanning electron microscope(SEM)and X-ray photoelectron spectrometer(XPS).Meanwhile,a gas sensor based on Au NP loaded Co_(3)(HITP)_(2)@ZIF-67 composite was prepared,and its gas sensitivity to H2S at room temperature was investigated.The test results show that compared with the pure ZIF-67 gas sensor,the gas sensor of Au NPs-Co_(3)(HITP)_(2)@ZIF-67 composites can achieve a response of 2.7 to H2S gas with a volume fraction of 20 ppm(1 ppm=1×10^(-6))at room temperature,and the response/recovery time is 64 s/99 s,and it has a good selectivity,repeatability and long-term stability.

关 键 词：气体传感器 复合材料 H2S气敏检测 水热法 Co_(3)(HITP)_(2) 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB33[自动化与计算机技术—控制科学与工程]