Low Working‐Temperature Acetone Vapor Sensor Based on Zinc Nitride and Oxide Hybrid Composites. Issue 23 (4th May 2016)

• Record Type: Journal Article
• Authors: Qu, Fengdong; Yuan, Yao; Guarecuco, Rohiverth; Yang, Minghui
• Is Part Of: Small. Volume 12:Issue 23(2016)
• Page Start: 3128
• Page End: 3133
• Publication Date: 2016-05-04
• Subjects: acetone -- nitride -- oxides -- sensors -- zinc; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201600422
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : Transition‐metal nitride and oxide composites are a significant class of emerging materials that have attracted great interest for their potential in combining the advantages of nitrides and oxides. Here, a novel class of gas sensing materials based on hybrid Zn3 N2 and ZnO composites is presented. The Zn3 N2 /ZnO (ZnNO) composites‐based sensor exhibits selectivity and high sensitivity toward acetone vapor, and the sensitivity is dependent on the nitrogen content of the composites. The ZnNO‐11.7 described herein possesses a low working temperature of 200 °C. The detection limit (0.07 ppm) is below the diabetes diagnosis threshold (1.8 ppm). In addition, the sensor shows high reproducibility and long‐term stability. Abstract : Zn3 N2 /ZnO hybrid composites are synthesized through a simple strategy of nitridation of zinc powder and subsequent oxidation. The sensing material exhibits excellent gas sensing performance toward acetone vapor at low working temperature of 200 °C.