A dog nose-inspired high-performance NH3 gas sensor of biomass carbon materials with a pleated structure derived from rose tea. Issue 27 (10th June 2022)

• Record Type: Journal Article
• Authors: Sun, Qihua; Wu, Zhaofeng; Qin, Zhangjie; Chen, Xuan; Zhang, Chuanchuan; Cao, Biaobing; Duan, Haiming; Zhang, Jun
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 27(2022)
• Page Start: 14326
• Page End: 14335
• Publication Date: 2022-06-10
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2ta02670h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Inspired by the pleated structure of dog's maxillary turbinate, porous CRT with pleated structure is successfully prepared by carbonization of rose tea and applied to gas-sensitive detection for the first time. Abstract : Inspired by the similarity between the pleated structure of rose petals and the pleated structure of a dog's maxillary turbinate, porous biomass carbon materials with a pleated structure have been successfully prepared from rose petals by direct carbonization. Detailed SEM and TEM characterization showed that the carbonized rose tea (CRT) at 600 °C exhibited a mimetic structure very similar to the dog's maxillary turbinate. The trace K element was detected in the prepared CRT materials, which effectively improved the adsorption capacity of the CRT materials for NH3 as revealed by density functional theory based on first-principles calculations. As a result, the CRT sensor showed an ultra-high response (60.16k%) to 500 ppm NH3 with a theoretical detection limit of only 4.82 ppb, in addition to showing a fast recovery (2.0 s), excellent repeatability and long-term stability. Moreover, the formation of nanopores in the pleated structure of the CRT and the sensing mechanism of NH3 were analyzed. Through a simple, inexpensive and efficient method, this study provides a new strategy for the preparation of a high-performance gas sensor with a bionic structure by directly using the similarity between the biomass structure and dog nose structure.