MXene/CNF复合气凝胶的制备及其湿敏性能研究  

Preparation and Humidity Sensing Properties of MXene/CNF Composite Aerogels

作　　者：沈湘凌 陈广杰 郭大亮 李静 童欣 SHEN Xiangling;CHEN Guangjie;GUO Daliang;LI Jing;TONG Xin(School of Environmental and Natural Resources,Zhejiang University of Science&Technology,Hangzhou,Zhejiang Province,310023)

机构地区：[1]浙江科技大学环境与资源学院,浙江杭州310023

出　　处：《中国造纸》2024年第8期1-11,共11页China Pulp & Paper

基　　金：国家自然科学基金项目(22308333);浙江省“尖兵”“领雁”科技计划项目(2022C01066)。

摘　　要：本研究将新型二维过渡金属碳氮材料(MXene)与纤维素纳米纤维(CNF)复合,通过液氮定向和非定向预冷冻方法,冷冻干燥后制备4种不同MXene/CNF复合气凝胶,探究加入不同类型CNF、MXene和采用不同液氮预冷冻方法对复合气凝胶形貌结构的影响。结果表明,定向单层MXene/TOCNF复合气凝胶形貌最为优异;对其制备的湿度传感器在相对湿度11%~97%的条件下进行了湿敏测试,发现在MXene质量分数10%、相对湿度97%的条件下,传感器响应值增大了3倍,说明传感器对于高湿度更为敏感,且该传感器在14天内基本稳定。In this study,the novel two-dimensional transition metal carbon and nitrogen material(MXene)was composited with cellulose nanofibers(CNF),and four different kinds of CNF composite aerogel sensors were prepared after freeze-drying by the liquid nitrogen direc⁃tional and non-directional pre-freezing methods.The impacts of various types of CNF and MXene,with different liquid nitrogen pre-freezing methods on the morphology and structure of the MXene/CNF composite aerogels were investigated.The results showed that the oriented monolayer MXene/TOCNF composite aerogel had the most excellent morphology.Additionally,the humidity sensitivity test was conducted at relative humidity levels ranging from 11%~97%.The results revealed a three times of increase in response value at relative humidity of 97%with MXene dosage of 10%,indicating superior sensitive of the sensor to high humidity.Furthermore,the sensors demonstrated overall stablility within 14 days.

关 键 词：CNF MXene 液氮定向冷冻 气凝胶 湿度传感器 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]