Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 266, Issue -, Pages 761-772Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.03.106
Keywords
CuO; Nanoplatelets; Nanoflowers; Gas sensors; Sonochemical
Funding
- Department of Science and Technology (DST) [HGER27S, HGER61S]
- Council for Scientific and Industrial Research (CSIR) [HGER27S, HGER61S]
Ask authors/readers for more resources
The strategy for the synthesis of metal oxide nanostructured based sensors that operate at room temperature with higher sensitivity and selectivity facilitates the forecasts towards low cost and power consumption gas sensors which will be beneficial to domestic and industrial applications. As a result, herein, we report on the improved room temperature NO2 gas sensing based on CuO nanostructures grown using the sonochemical method in various aqueous solutions. A transformation of the copper nitrate solution under basic aqueous conditions into CuO nanoplatelets and flower-like nanostructures, without the assistance of any surfactants and additives was observed. Structural analyses revealed a size-dependent broadening due to the decrease in platelet size as the reaction temperature was increased. A high sensitivity of 173 ppm 1 and selectivity to NO2 gas at room-temperature has been realized when using NaOH as a base. The higher sensing properties were due to longer synthesis reaction temperature (75 degrees C), resulting to small crystallite size, higher Brunauer-Emmett-Teller surface area and point defects. (C) 2018 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available