Journal
CHEMOSPHERE
Volume 291, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.132842
Keywords
Core-shell; SnO2/ZIF-8 sphere-like; Response and selectivity; NO2; Gas sensors
Categories
Funding
- Ministry of Education, Kingdom of Saudi Arabia under the institutional Funding Committee at Najran University, Kingdom of Saudi Arabia [NU/IFC/INT/01/001]
- National Key Research and Development Program of China [2017YFB0310400]
- National Natural Science Foundation of China [51950410596, 52172069]
- Foreign Specialized Project of the Ministry of Science and Technology of Jiangsu Provincial Department of Science and Technology [6181220002]
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Timely detection of harmful, poisonous, and air pollutant gases is crucial for protecting humans from exposure to severe gas levels. Gas-sensing devices based on sphere-like porous SnO2/ZIF-8 nanocomposites provide high surface area, porosity, and active sites for excellent responses in metal oxide gas sensors. The engineered gas sensors show excellent sensing sensitivity, rapid response and recovery times, and favorable selectivity for NO2 gases. Therefore, NO2 gas sensors based on core-shell SnO2/ZIF-8 nanospheres have promising applications in industrial settings.
Timely detection of harmful, poisonous and air pollutant gases is of vital importance to the protection of human beings from exposure to rigorous gases. The development of gas-sensing devices based on sphere-like porous SnO2/ZIF-8 nanocomposites is required to overcome this challenge. Nanostructures with high surface area, more porosity and hollow interior provide plenty of active cites for high responses in metal oxide gas sensors. The engineered gas sensors have excellent sensing sensitivity (164), rapid response and recovery times (60, 45 s), and favorable selectivity for NO2 gases under 300 degrees C. Consequently, NO2 gas sensors based on core-shell SnO2/ZIF-8 nanospheres are regarded viable capacity industrial applicants.
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