Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 34, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/s10854-022-09743-z
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In this study, a metal organic framework (MOF) derived bayberry-like In2O3 architectures gas sensor was prepared for the detection of trimethylamine (TMA) hazardous gases. The sensor exhibited a low operating temperature, high response value, fast response speed, and good selectivity and stability. The gas-sensing mechanism was discussed, attributing the excellent performance to the unique MOF-derived architecture and abundance of oxygen vacancies. With its excellent gas sensitivity, the sensor has potential applications in TMA gas detection, seafood freshness detection, and renal disease detection.
For the rapid and accurate detection of trimethylamine (TMA) hazardous gases, a metal organic framework (MOF) derived bayberry-like In2O3 architectures gas sensor was successfully prepared by a rapid and facile hydrothermal synthesis (30 min) and subsequent precise annealing process. The gas sensitivity test results show that the MOF-derived bayberry-like In2O3 sensor has a low operating temperature of 120 degrees C, a response value of 23.2 to 20 ppm trimethylamine, a fast response speed of 1.4 s, and good selectivity and stability. In addition, the gas-sensing mechanism of the sample is discussed. It is considered that the unique MOF-derived bayberry-like architectures and the abundance of oxygen vacancies are the main reasons for its excellent gas-sensing performance. A possible growth mechanism is proposed by observing the morphological evolution of the samples at different stages. With excellent gas sensitivity, the MOF-derived bayberry-like In2O3 architectures sensor will be an outstanding candidate for TMA gas detection application, seafood freshness detection, and renal disease detection.
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