{"title":"用于 H2S 气体传感的 ZIF-71 覆盖层一维中空多孔 Ru-CuO 纳米纤维及其第一原理研究","authors":"Chang-Kun Qiu, Lin Wang, Fei An, Hao Zhang, Qing-Run Li, Hao-Zhi Wang, Ming-Jun Li, Jing-Yu Guo, Pei-Lin Jia, Zong-Wei Liu, Liang Zhu, Wei Xu, Dong-Zhi Zhang","doi":"10.1007/s12598-024-02977-2","DOIUrl":null,"url":null,"abstract":"<p>Based on the unique catalytic properties of precious metals, the introduction of precious metals into metal oxide semiconductors will greatly improve the gas-sensitive properties of materials. As a new type of porous material, metal–organic frameworks (MOF) can be used for gas separation and adsorption due to their adjustable pore size and acceptable thermal stability. In this work, the ZIF-71 MOF was synthesized on CuO nanofibers doped with different concentrations of Ru to form a Ru–CuO@ZIF-71 nanocomposite sensor, which was then used for H<sub>2</sub>S detection. The sensor shows sensitivity to trace amounts of H<sub>2</sub>S gas (100 ppb), and the response is greatly enhanced at the optimal Ru doping ratio and operating temperature. The introduction of the ZIF-71 membrane can significantly increase the selectivity of the sensor while further improving the sensitivity. Finally, the possible sensing mechanism of the Ru–CuO@ZIF-71 sensor was explored. The enhancement of the H<sub>2</sub>S gas sensing properties may be attributed to the catalysis of Ru and the formation of the Schottky junction at the Ru–CuO interface. Besides, the calculation based on density functional theory reveals enhanced adsorption capacities of CuO for H<sub>2</sub>S after Ru doping. Therefore, the Ru–CuO@ZIF-71 sensor has strong application potential in exhaled gas detection and portable detection of H<sub>2</sub>S gas in industrial environments.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"270 1","pages":""},"PeriodicalIF":9.6000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"One-dimensional hollow porous Ru–CuO nanofibers covered with ZIF-71 for H2S gas sensing and its first-principle study\",\"authors\":\"Chang-Kun Qiu, Lin Wang, Fei An, Hao Zhang, Qing-Run Li, Hao-Zhi Wang, Ming-Jun Li, Jing-Yu Guo, Pei-Lin Jia, Zong-Wei Liu, Liang Zhu, Wei Xu, Dong-Zhi Zhang\",\"doi\":\"10.1007/s12598-024-02977-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Based on the unique catalytic properties of precious metals, the introduction of precious metals into metal oxide semiconductors will greatly improve the gas-sensitive properties of materials. As a new type of porous material, metal–organic frameworks (MOF) can be used for gas separation and adsorption due to their adjustable pore size and acceptable thermal stability. In this work, the ZIF-71 MOF was synthesized on CuO nanofibers doped with different concentrations of Ru to form a Ru–CuO@ZIF-71 nanocomposite sensor, which was then used for H<sub>2</sub>S detection. The sensor shows sensitivity to trace amounts of H<sub>2</sub>S gas (100 ppb), and the response is greatly enhanced at the optimal Ru doping ratio and operating temperature. The introduction of the ZIF-71 membrane can significantly increase the selectivity of the sensor while further improving the sensitivity. Finally, the possible sensing mechanism of the Ru–CuO@ZIF-71 sensor was explored. The enhancement of the H<sub>2</sub>S gas sensing properties may be attributed to the catalysis of Ru and the formation of the Schottky junction at the Ru–CuO interface. Besides, the calculation based on density functional theory reveals enhanced adsorption capacities of CuO for H<sub>2</sub>S after Ru doping. Therefore, the Ru–CuO@ZIF-71 sensor has strong application potential in exhaled gas detection and portable detection of H<sub>2</sub>S gas in industrial environments.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical abstract</h3>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"270 1\",\"pages\":\"\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2024-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12598-024-02977-2\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12598-024-02977-2","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
One-dimensional hollow porous Ru–CuO nanofibers covered with ZIF-71 for H2S gas sensing and its first-principle study
Based on the unique catalytic properties of precious metals, the introduction of precious metals into metal oxide semiconductors will greatly improve the gas-sensitive properties of materials. As a new type of porous material, metal–organic frameworks (MOF) can be used for gas separation and adsorption due to their adjustable pore size and acceptable thermal stability. In this work, the ZIF-71 MOF was synthesized on CuO nanofibers doped with different concentrations of Ru to form a Ru–CuO@ZIF-71 nanocomposite sensor, which was then used for H2S detection. The sensor shows sensitivity to trace amounts of H2S gas (100 ppb), and the response is greatly enhanced at the optimal Ru doping ratio and operating temperature. The introduction of the ZIF-71 membrane can significantly increase the selectivity of the sensor while further improving the sensitivity. Finally, the possible sensing mechanism of the Ru–CuO@ZIF-71 sensor was explored. The enhancement of the H2S gas sensing properties may be attributed to the catalysis of Ru and the formation of the Schottky junction at the Ru–CuO interface. Besides, the calculation based on density functional theory reveals enhanced adsorption capacities of CuO for H2S after Ru doping. Therefore, the Ru–CuO@ZIF-71 sensor has strong application potential in exhaled gas detection and portable detection of H2S gas in industrial environments.
期刊介绍：
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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