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has been cited by the following article:

• TITLE: Synthesis and Characterization of SnO2 Flower-Shaped by Hydrothermal Route for Formaldehyde Sensing Properties

  AUTHORS: Abeer Alhadi, Shuyi Ma, Shitu Pei, Tingting Yang, Pengdou Yun, Qianqian Zhang, Hamouda Adam Hamouda, Li Wang, Omer Almamoun, Altayeb Alshiply, Pengfei Cao, Manahil H. Balal, Khalid Ahmed Abbakar

  KEYWORDS: SnO2 Flower-Shaped, Hydrothermal Method, Formaldehyde, Semiconductor, Gas Sensor

  JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.11 No.4, April 6, 2021

  ABSTRACT: In this work, we’ve made SnO2 flower formed with the aid of using easy test steps, and without cost, which is the hydrothermal approach and without a template. We have used a variety of techniques to characterize SnO2 flower-shaped by (SEM, TEM, XRD, BET and XPS) instruments. Confirmatory tests carried out have proven that the surface of the tetragonal structure of SnO2 has a rough surface which makes it excellent for its gas-sensing properties. The gas detection test of SnO2 flower-shaped proved that it possesses the selectivity of formaldehyde gas (about 30), the optimum operating temperature of the sensor is 220°C, and also the sensor has a high response time and recovery time is (5 s and 22 s) to 100 ppm, respectively. Particularly, the sensor has an obvious response value (2) when exposed to 5 ppm formaldehyde. As well, the mechanism of gas-sensing was also discussed.