纳米MnO_2负载棉织物的甲醛去除效率  

Formaldehyde removal efficiency of nano MnO_2 loaded cotton fabric

作　　者：杜敏芝[1,2] 田明伟[1,2,3] 曲丽君[1,2,3] 

机构地区：[1]青岛大学纺织学院,山东青岛266071 [2]青岛大学纤维新材料与现代纺织国家重点实验室培育基地,山东青岛266071 [3]青岛大学海洋生物质纤维材料及纺织品协同创新中心,山东青岛266071

出　　处：《印染》2016年第12期37-41,共5页China Dyeing and Finishing

基　　金：国家自然科学基金(No.51273097;No.51306095;No.51403112);中国博士后科学基金(No.2014M561887);中国博士后科学基金特别资助(2015T80697);青岛市应用基础研究计划(14-2-4-1-JCH;15-9-1-41-JCH);青岛市博士后应用基础研究项目

摘　　要：采用原位沉积法将二氧化锰接枝于棉织物上,制备负载MnO_2棉织物。通过红外光谱、X-射线衍射光谱和扫描电镜等,对二氧化锰的微观形态和结构组成进行表征和分析。采用乙酰丙酮分光光度法测定甲醛的质量浓度,并研究了二氧化锰接枝量、甲醛初始质量浓度、反应时间和洗涤对甲醛分解效率的影响。结果表明,负载纳米MnO_2棉织物对甲醛具有优异的氧化分解性能。室温条件下,负载7次的改性棉织物(含18.6 mg MnO_2)17 h后即可将25 m L质量浓度为5 mg/L甲醛溶液中的甲醛全部分解;负载5次的改性棉织物(含12.8 mg MnO_2),甲醛去除率为96.5%。经10次水洗后,MnO_2脱落流失量较小(<2%),可重复使用。Cotton fabrics loaded with nano manganese dioxide are prepared by in situ deposition method. Surface morphology and internal structure of modified cotton fabric is analyzed by Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy and scanning electron microscope. The formalde-hyde concentration is measured by acetylacetone spectrophotometry method and the effects of MnO; grafting rate, initial concentration of formaldehyde, reaction time and washing condition on removal efficiency of formaldehyde are studied. The results show that cotton fabrics loaded with nano manganese dioxide have excellent oxidation decomposition property of formaldehyde. 5 mg/L formaldehyde solution 25 mL can be decomposed completely by the sample loaded 7 times （containing 18.6 mg MnO2） within 17 h at room temperature, and 96.5% of formaldehyde can be decomposed by the sample loaded 5 times （containing 12.8 mg MnO2）. The loss of MnO2 is less than 2% even after 10 times washing, so that the sample can be reused.

关 键 词：变性整理 甲醛 二氧化锰 氧化分解 棉织物 

分 类 号：TS195.54[轻工技术与工程—纺织化学与染整工程]