光子晶体纤维素膜检测二氧化硫气体  

Detection of Sulfur Dioxide Using Cellulose Photonic Crystal Membrane

作　　者：王一飞 周丽君 杨吉 孟子晖 薛敏 邱丽莉 刘学涌[2] 何璇[2] 钟发春[2] LIU Xue-Yong;HE Xuan;YANG Ji;MENG Zi-Hui;XUE Min;QIU Li-Li;LIU Xue-Yong;HE Xuan;ZHONG Fa-Chun(School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]北京理工大学化学与化工学院,北京100081 [2]中国工程物理研究院化工材料研究所,绵阳621900

出　　处：《分析化学》2018年第9期1472-1478,共7页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(Nos.U1530141;21375009);北京理工大学基础研究基金项目(No.20141642005)资助~~

摘　　要：二氧化硫作为重要的大气污染源一直备受关注,但是目前的检测方法操作复杂,不利于现场实时监测。本研究采用垂直沉降法制备了高度有序的紧密堆积型三维聚甲基丙稀酸甲酯(PMMA)胶体阵列,并且利用甲基纤维素(MC)和羧甲基纤维素(CMC)作为三维阵列的载体制备了蛋白石型和反蛋白石型纤维素膜。这些纤维素光子晶体膜结构色明亮,反射峰明显且峰型良好。二甲基亚砜(DMSO)对二氧化硫有较强溶解性能,负载了DMSO的反蛋白石膜吸附二氧化硫气体后结构色由红色变为无色,实现了裸眼检测,且检测限低于国家二级防护浓度(7898 mg/m^3),为大气中二氧化硫现场检测提供了一种重复性好、便捷高效的方法。Sulfur oxide is one of the most concerned air pollutants.Current detection technique for sulfur oxide is complicated,and in situ techniques are in highly demand.Herein,3D polymethyl methacylate colloidal arrays which were embedded inside methylcellulose(MC)and carboxymethylcellulose(CMC)membrane were prepared,and then opal and inverse opal cellulose photonic crystal with bright structural color were obtained.After treated with dimethyl sulfoxide(DMSO),the structural color of the inverse opal cellulose photonic crystal turned from red to colorless,and the naked-eye detection for SO 2 was achieved with a detection limit of lower than 7898 mg/m 3.This technique might be useful for the in situ detection of SO 2 pollutant in the air.

关 键 词：光子晶体 化学传感器 羧甲基纤维素 二氧化硫 二甲基亚砜 

分 类 号：O657[理学—分析化学] X831[理学—化学]