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J Hazard Mater

Title:		Nanoarchitectured porous carbons derived from ZIFs toward highly sensitive and selective QCM sensor for hazardous aromatic vapors
Author(s):		Torad NL; Kim J; Kim M; Lim H; Na J; Alshehri SM; Ahamad T; Yamauchi Y; Eguchi M; Ding B; Zhang X;
Address:		"Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing 210016, China; JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Ibaraki, Tsukuba 305-0044, Japan; Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt. Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea. School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane QLD 4072, Australia. Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia. JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Ibaraki, Tsukuba 305-0044, Japan; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane QLD 4072, Australia. JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Ibaraki, Tsukuba 305-0044, Japan. Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing 210016, China; JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Ibaraki, Tsukuba 305-0044, Japan. Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing 210016, China. Electronic address: azhangxg@nuaa.edu.cn"
Journal Title:		J Hazard Mater
Year:		2021
Volume:		20201027
Issue:
Page Number:		124248 -
DOI:		10.1016/j.jhazmat.2020.124248
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Metal-organic frameworks (MOFs) are a versatile source of carbon nanoarchitectures in gas sensing applications (Torad et al., 2019). Herein, several types of nanoporous carbons (NPCs) have been prepared by in-situ carbothermal treatment of zeolitic imidazolate frameworks (ZIFs) under different inert atmospheres to achieve a highly sensitive discrimination of vaporized aromatic compounds. In this study, we demonstrate how different carbonization conditions under the flow of N(2) or H(2) gases affect the surface area and the degree of graphitization of the resulting NPCs polyhedrons, and their consequent effect on the sensing performance in terms of sensitivity and selectivity toward toxic volatile hydrocarbons. A growth of carbon nanotubes (CNTs) is observed on the surface of polyhedral NPCs after careful carbonization of ZIF crystals under H(2) atmosphere. The fabricated quartz crystal microbalance (QCM) sensor with CNT-containing NPCs demonstrates increased sensitivity and selectivity towards toxic volatile aromatic hydrocarbons over the aliphatic analogues, suggesting the rich growth of hairy graphitic-like CNTs on the surface of carbon framework act as highly selective sensing antennae for vapor molecular discrimination of toxic aromatic hydrocarbons. Despite of increased selectivity towards volatile aromatic compounds, however, the surface area of CNT-rich NPCs derived from hybrid ZIFs and ZIF-67 is greatly sacrificed as compared to CNT-free NPCs from ZIF-8 polyhedron. In the case of Co-containing ZIF-67, the rich growth of hair-like CNTs, which is induced by the presence of Co, is observed during carbothermal reduction under a flow of H(2) gas, thus allowing ultra-selective detection of aromatic hydrocarbons in the vapor phase, such as benzene (C(6)H(6)) and toluene (C(6)H(5)CH(3)) over their aliphatic analogue, c-hexane (c-C(6)H(12)) of same molecular mass, size and vapor pressure"
Keywords:		Carbon nanoarchitectures Metal-organic frameworks Nanoporous carbons (NPCs) Quartz crystal microbalance Vapor discrimination;
Notes:		"PubMed-not-MEDLINETorad, Nagy L Kim, Jeonghun Kim, Minjun Lim, Hyunsoo Na, Jongbeom Alshehri, Saad M Ahamad, Tansir Yamauchi, Yusuke Eguchi, Miharu Ding, Bing Zhang, Xiaogang eng Research Support, Non-U.S. Gov't Netherlands 2020/11/17 J Hazard Mater. 2021 Mar 5; 405:124248. doi: 10.1016/j.jhazmat.2020.124248. Epub 2020 Oct 27"