CMK-3 介孔碳材料的功能化及其湿敏性能

doi:10.12066/j.issn.1007-2861.2262

上海大学学报(自然科学版) ›› 2022, Vol. 28 ›› Issue (1): 102-110.doi: 10.12066/j.issn.1007-2861.2262

CMK-3 介孔碳材料的功能化及其湿敏性能

张志伟¹, 樊煜², 马志恒², 李润龙², 郝晨冉², 徐甲强²()

1.上海大学材料科学与工程学院, 上海 200444
2.上海大学理学院, 上海 200444

收稿日期:2019-11-02 出版日期:2022-02-28 发布日期:2020-10-19
通讯作者: 徐甲强 E-mail:xujiaqiang@shu.edu.cn
作者简介:徐甲强(1963—), 男, 教授, 博士生导师, 博士, 研究方向为材料化学与气湿敏传感器. E-mail: xujiaqiang@shu.edu.cn
基金资助:
国家科研仪器研制项目(61527818);上海市科委重大资助项目(17010500500)

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

ZHANG Zhiwei¹, FAN Yu², MA Zhiheng², LI Runlong², HAO Chenran², XU Jiaqiang²()

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

Received:2019-11-02 Online:2022-02-28 Published:2020-10-19
Contact: XU Jiaqiang E-mail:xujiaqiang@shu.edu.cn

摘要/Abstract

摘要：

介孔材料广泛应用于储能、催化和湿度传感领域. 以有序介孔氧化硅材料 SBA-15 为模板, 通过纳米铸造法制备出比表面积大于 1 000 m²/g 的 CMK-3 介孔碳材料, 并采用过硫酸铵 (ammonium persulfate, APS) 氧化法对其进行了羧基功能化改性. 利用傅里叶变换红外光谱仪 (Fourier transform infrared spectroscopy, FTIR)、透射电子显微镜 (transmission electron microscope, TEM)、X 射线衍射仪 (X-ray diffraction, XRD)、全自动比表面积和孔隙度分析仪对材料进行了表征. 研究结果表明, 功能化前后的 CMK-3 介孔碳材料都具有良好的有序介孔结构. 石英晶体微天平 (quartz crystal microbalance, QCM) 湿敏测试结果表明, 在羧基功能化改性后该材料对不同的湿度环境均有较好的响应, 材料的湿敏性能得到了显著增强, 特别是在 97%RH 高湿度的测试中获得了高达 1 600 Hz 的响应, 在高湿度传感器方面有较好的应用前景.

关键词: 有序介孔碳, 羧基功能化, 石英晶体微天平, 湿度传感器, CMK-3

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

中图分类号:

TP212.2

张志伟, 樊煜, 马志恒, 李润龙, 郝晨冉, 徐甲强. CMK-3 介孔碳材料的功能化及其湿敏性能[J]. 上海大学学报(自然科学版), 2022, 28(1): 102-110.

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（Natural Science Edition）, 2022, 28(1): 102-110.

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CMK-3 介孔碳材料的功能化及其湿敏性能

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

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