纸基气敏传感材料的研制  

Development of Paper-based Gas Sensing Materials

作　　者：冯仁伟 胡彬杰 廖荣志 段继鹏 邵剑宇 刘文波 FENG Ren-wei;HU Bin-jie;LIAO Rong-zhi;DUAN Ji-peng;SHAO Jian-yu;LIU Wen-bo(College of Material Science and Engineering,Northeast Forestry University,Harbin 150040)

机构地区：[1]东北林业大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《造纸技术与应用》2025年第1期1-4,共4页Paper Technology & Application

基　　金：国家级大学生创新创业训练项目(202310225154)。

摘　　要：基于“纤维素-溶解-再生-构建功能性再生纤维素”的构思,将光催化剂与溶解纤维素共同再生制备功能性纤维素复合填料,然后与纸浆纤维配抄制备光催化纸,在该纸张上喷洒亚甲基蓝染料,干燥后照射紫外线,光催化剂将亚甲基蓝(蓝色)还原为还原态亚甲基蓝(无色),该光催化纸即为气敏材料。当该气敏材料与空气(氧气)接触后会把还原态亚甲基蓝(无色)氧化为亚甲基蓝(蓝色),基于此氧化变色原理,气敏材料可以检测空气(氧气)的存在。研究结果显示,将该气敏材料置于空气中约30 min后,材料完全恢复蓝色。该材料可用于密闭空间、地下矿井作业环境以及对氧气敏感的食品、药品等物品包装内的氧气进行简捷、快速的检测。This study is based on the concept of"cellulose-dissolution-regeneration-functionalized cellulose construction."Photocatalysts are integrated with dissolved cellulose to regenerate and form functional cellulose composite fillers,which are then blended with pulp fibers to produce photocatalytic paper.The paper is sprayed with methylene blue dye and dried.Upon UV irradiation,the photocatalyst reduces methylene blue(blue)to its reduced form(colorless).This photocatalytic paper serves as an oxygen-sensitive material.When exposed to air(oxygen),the reduced methylene blue(colorless)is oxidized back to methylene blue(blue).This oxidation-induced color change enables the material to detect the presence of oxygen in the air.Experimental results show after 30 minutes,it has completely reverted to its blue state.This material can be used for rapid and simple detection of oxygen in confined spaces,underground mining environments,and in packaging for oxygen-sensitive products such as food and pharmaceuticals.

关 键 词：光催化剂 再生纤维素 复合填料 光催化纸 气敏传感材料 

分 类 号：TS761.2[轻工技术与工程—制浆造纸工程] TB381[一般工业技术—材料科学与工程]