Hierarchical Nanoheterostructure of HFIP-Grafted α-Fe2O3@Multiwall Carbon Nanotubes as High-Performance Chemiresistive Sensors for Nerve Agents
-
Published:2024-02-02
Issue:3
Volume:14
Page:305
-
ISSN:2079-4991
-
Container-title:Nanomaterials
-
language:en
-
Short-container-title:Nanomaterials
Author:
Wang Xuechun1, Liu Jingyuan1ORCID, Li Rumin1, Yu Jing1, Liu Qi1, Zhu Jiahui1, Liu Peili1
Affiliation:
1. Key Laboratory of Superlight Material and Surface Technology, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
Abstract
New and efficient sensors of nerve agents are urgently demanded to prevent them from causing mass casualties in war or terrorist attacks. So, in this work, a novel hierarchical nanoheterostructure was synthesized via the direct growth of α-Fe2O3 nanorods onto multiwall carbon nanotube (MWCNT) backbones. Then, the composites were functionalized with hexafluoroisopropanol (HFIP) and successfully applied to detect dimethyl methylphosphonate (DMMP)-sarin simulant gas. The observations show that the HFIP-α-Fe2O3@MWCNT hybrids exhibit outstanding DMMP-sensing performance, including low operating temperature (220 °C), high response (6.0 to 0.1 ppm DMMP), short response/recovery time (8.7 s/11.9 s), as well as low detection limit (63.92 ppb). The analysis of the sensing mechanism demonstrates that the perfect sensing performance is mainly due to the synergistic effect of the chemical interaction of DMMP with the heterostructure and the physical adsorption of DMMP by hydrogen bonds with HFIP that are grafted on the α-Fe2O3@MWCNTs composite. The huge specific surface area of HFIP-α-Fe2O3@MWCNTs composite is also one of the reasons for this enhanced performance. This work not only offers a promising and effective method for synthesizing sensitive materials for high-performance gas sensors but also provides insight into the sensing mechanism of DMMP.
Funder
Heilong Jiang Postdoctoral Funds for Scientific Research Initiation
Subject
General Materials Science,General Chemical Engineering
Reference72 articles.
1. Diauudin, F.N., Rashid, J.I.A., Knight, V.F., Yunus, W.M.Z.W., Ong, K.K., Kasim, N.A.M., Halim, N.A., and Noor, S.A.M. (2019). A review of current advances in the detection of organophosphorus chemical warfare agents based biosensor approaches. Sens. Bio-Sens. Res., 26. 2. Toxicity, monitoring and biodegradation of organophosphate pesticides: A review;Sidhu;Crit. Rev. Environ. Sci. Technol.,2019 3. HFIP-functionalized 3D carbon nanostructure as chemiresistive nerve agents sensors under visible light;Alali;Sens. Actuators B Chem.,2022 4. Hydrogen bonds-induced room-temperature detection of DMMP based on polypyrrole-reduced graphene oxide hybrids;Yang;Sens. Actuators B Chem.,2021 5. Al-Faiyz, Y.S.S., Sarfaraz, S., Yar, M., Munsif, S., Khan, A.A., Amin, B., Sheikh, N.S., and Ayub, K. (2023). Efficient Detection of Nerve Agents through Carbon Nitride Quantum Dots: A DFT Approach. Nanomaterials, 13.
|
|