Embedded ZnO nanorods and gas-sensing properties

• Main Authors: Shahid, Hussain, Tianmo, Liu, Bin, Miao, Muhammad, Kashif, Nimra, Aslam, Muhammad, Rashad, Wen, Zeng, Xianghe, Peng
• Format: Article
• Language: English
• Published: Elsevier Ltd and Techna Group S.r.l. 2015
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://ir.unimas.my/id/eprint/10590/1/Tianmo.pdf; http://ir.unimas.my/id/eprint/10590/; http://www.sciencedirect.com/science/article/pii/S0272884214019658
• Institution: Universiti Malaysia Sarawak

Regular hexagonal embedded ZnO nanorods were successfully prepared by a simple hydrothermal method. The addition of urea as a homogeneous precursor was found to play a vital role in the embedding of secondary nanorods. The nanostructures were characterized by XRD, SEM, and EDS. The gas-sensing properties of secondary grown embedded nanorods were reported for formaldehyde, ethanol, methanol, acetone, and ammonia at different concentrations and temperatures. A higher response and greater selectivity toward formaldehyde than other gases was observed. A sharp response with the best recovery time was achieved at an optimum temperature of 200 °C.