| Title: | NH(3) Sensor Based on 2D Wormlike Polypyrrole/Graphene Heterostructures for a Self-Powered Integrated System |
| Author(s): | Gao J; Qin J; Chang J; Liu H; Wu ZS; Feng L; |
| Address: | "Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. University of Chinese Academy of Sciences, Beijing 100049, China. State Key Laboratory of Catalysis, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "The rapid development of a NH(3) sensor puts forward a great challenge for active materials and integrated sensing systems. In this work, an ultrasensitive NH(3) sensor based on two-dimensional (2D) wormlike mesoporous polypyrrole/reduced graphene oxide (w-mPPy@rGO) heterostructures, synthesized by a universal soft template method is reported, revealing the structure-property coupling effect of the w-mPPy/rGO heterostructure for sensing performance improvement, and demonstrates great potential in the integration of a self-powered sensor system. Remarkably, the 2D w-mPPy@rGO heterostructrure exhibits preferable response toward NH(3) (DeltaR/R(0) = 45% for 10 ppm NH(3) with a detection limit of 41 ppb) than those of the spherical mesoporous hybrid (s-mPPy@rGO) and the nonporous hybrid (n-PPy@rGO) due to its large specific surface area (193 m(2)/g), which guarantees fast gas diffusion and transport of carriers. Moreover, the w-mPPy@rGO heterostructures display outstanding selectivity to common volatile organic compounds (VOCs), H(2)S, and CO, prominent antihumidity inteference superior to most existing chemosensors, superior reversibility and favorable repeatability, providing high potential for practicability. Thus, a self-powered sensor system composed of a nanogenerator, a lithium-ion battery, and a w-mPPy@rGO-based sensor was fabricated to realize wireless, portable, cost-effective, and light-weight NH(3) monitoring. Impressively, our self-powered sensor system exhibits high response toward 5-40 mg NH(4)NO(3), which is a common explosive to generate NH(3) via alkaline hydrolysis, rendering it a highly prospective technique in a NH(3)-based sensing field" |
| Keywords: | high response polypyrrole/graphene heterostructures self-powered integrated system ultrasensitive wormlike mesoporous; |
| Notes: | "PubMed-not-MEDLINEGao, Jianmei Qin, Jieqiong Chang, Junyu Liu, Hanqing Wu, Zhong-Shuai Feng, Liang eng 2020/08/19 ACS Appl Mater Interfaces. 2020 Aug 26; 12(34):38674-38681. doi: 10.1021/acsami.0c10794. Epub 2020 Aug 13" |
