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Journal of Shanghai University >

2022 , Vol. 28 >Issue 1: 102 - 110

DOI: https://doi.org/10.12066/j.issn.1007-2861.2262

Research Articles

Synthesis of functionalised CMK-3 ordered mesoporous carbon materials and their humidity sensitivity performance

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  • 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
    2. College of Sciences, Shanghai University, Shanghai 200444, China

Received date: 2019-11-02

  Online published: 2020-08-03

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Abstract

Mesoporous materials are widely used in several fields, such as energy storage, catalysis, and humidity sensors. In this study, ordered mesoporous silicon SBA-15 is used as a template to prepare CMK-3 mesoporous carbon materials with specific surface areas greater than 1 000 m2/g using a nanocasting method. The carbon materials are then modified by carboxyl functionalisation using ammonium persulfate. Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), small-angle X-ray diffraction (XRD), and Brunauer-Emmet-Teller (BET) nitrogen adsorption and desorption methods are used to characterise the materials. Results show that both before and after functionalisation, CMK-3 mesoporous carbon materials have favourable ordered mesoporous structures. Using a quartz crystal microbalance (QCM) test platform, the humidity sensing performances of the materials are tested. Results show that after carboxyl functional modification, the materials exhibit a high response to different humidity environments, and their humidity response is clearly enhanced. Particularly in a 97% RH high-humidity environment, a remarkable response of as high as 1 600 Hz is obtained, which proves beneficial to the application of CMK-3 humidity sensitive materials in high-humidity environments.

Key words： ordered mesoporous carbon; carboxyl functionalisation; quartz crystal microbalance (QCM); humidity sensor; CMK-3

Cite this article

ZHANG Zhiwei, FAN Yu, MA Zhiheng, LI Runlong, HAO Chenran, XU Jiaqiang . Synthesis of functionalised CMK-3 ordered mesoporous carbon materials and their humidity sensitivity performance[J]. Journal of Shanghai University, 2022 , 28(1) : 102 -110 . DOI: 10.12066/j.issn.1007-2861.2262

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