Qiaoyuan Yang, Ming Li, Yanlong Zheng, Xinyu Li, Ying Chen, Xinxin Li, P. Xu
{"title":"利用基于悬臂的温度编程还原技术定量测量单原子和纳米粒子钯催化剂的催化活性,用于灵敏检测甲烷","authors":"Qiaoyuan Yang, Ming Li, Yanlong Zheng, Xinyu Li, Ying Chen, Xinxin Li, P. Xu","doi":"10.1109/MEMS58180.2024.10439549","DOIUrl":null,"url":null,"abstract":"In this work, the catalytic activity of isolated single atoms (SAs) was quantitatively measured using an integrated resonant microcantilever, which can measure sub-picogram-level mass-changes of Pd-SAs during the reduction process under an H2-containing atmosphere (i.e., cantilever-based H2-TPR technique). The ultra-sensitive cantilever-TPR measurements indicate that Pd-SAs exhibit higher catalytic activity than Pd nanoparticles with an average diameter of 3nm. The higher catalytic activity of Pd-SAs can be verified through gas sensing experiments because Pd-SAs show satisfactory responses to ppm-level methane. In contrast, the response of Pd-NPs to 100 ppm methane is negligible.","PeriodicalId":518439,"journal":{"name":"2024 IEEE 37th International Conference on Micro Electro Mechanical Systems (MEMS)","volume":"66 3","pages":"217-220"},"PeriodicalIF":0.0000,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quantitative Measurements of Catalytic Activity of Single-Atom and Nanoparticle Palladium Catalysts for Sensitive Detection of Methane Using Cantilever-Based Temperature-Programmed Reduction Technique\",\"authors\":\"Qiaoyuan Yang, Ming Li, Yanlong Zheng, Xinyu Li, Ying Chen, Xinxin Li, P. Xu\",\"doi\":\"10.1109/MEMS58180.2024.10439549\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this work, the catalytic activity of isolated single atoms (SAs) was quantitatively measured using an integrated resonant microcantilever, which can measure sub-picogram-level mass-changes of Pd-SAs during the reduction process under an H2-containing atmosphere (i.e., cantilever-based H2-TPR technique). The ultra-sensitive cantilever-TPR measurements indicate that Pd-SAs exhibit higher catalytic activity than Pd nanoparticles with an average diameter of 3nm. The higher catalytic activity of Pd-SAs can be verified through gas sensing experiments because Pd-SAs show satisfactory responses to ppm-level methane. In contrast, the response of Pd-NPs to 100 ppm methane is negligible.\",\"PeriodicalId\":518439,\"journal\":{\"name\":\"2024 IEEE 37th International Conference on Micro Electro Mechanical Systems (MEMS)\",\"volume\":\"66 3\",\"pages\":\"217-220\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-01-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2024 IEEE 37th International Conference on Micro Electro Mechanical Systems (MEMS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/MEMS58180.2024.10439549\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2024 IEEE 37th International Conference on Micro Electro Mechanical Systems (MEMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MEMS58180.2024.10439549","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Quantitative Measurements of Catalytic Activity of Single-Atom and Nanoparticle Palladium Catalysts for Sensitive Detection of Methane Using Cantilever-Based Temperature-Programmed Reduction Technique
In this work, the catalytic activity of isolated single atoms (SAs) was quantitatively measured using an integrated resonant microcantilever, which can measure sub-picogram-level mass-changes of Pd-SAs during the reduction process under an H2-containing atmosphere (i.e., cantilever-based H2-TPR technique). The ultra-sensitive cantilever-TPR measurements indicate that Pd-SAs exhibit higher catalytic activity than Pd nanoparticles with an average diameter of 3nm. The higher catalytic activity of Pd-SAs can be verified through gas sensing experiments because Pd-SAs show satisfactory responses to ppm-level methane. In contrast, the response of Pd-NPs to 100 ppm methane is negligible.