摘要
随着物质生活的不断提高,甲醛成为了室内空气污染的主要物质,对于室内空气净化过程,去除甲醛技术变得尤为重要.利用条件温和、过程简单的水浴法使二氧化锰(MnO_2)原位负载到聚对苯二甲酸乙二醇酯(PET)制成的无纺织物上,制备出MnO_2/PET整体式催化剂.合成的MnO_2/PET复合物通过扫描电子显微镜(SEM)、X射线衍射(XRD)、比表面积测试(BET)进行表征分析,并在手套箱中模仿室内环境进行甲醛去除测试以及催化剂寿命测试.结果表明:整体式催化剂中的锰氧化物为水钠锰矿型二氧化锰,并均匀、牢固负载在无纺布上.由于其有较大的比表面积,在甲醛去除能力方面展示出了优良的性能,在甲醛初始质量浓度为2.84 mg/m^3的氛围测试中经过6 h,最后使甲醛质量浓度降低至0.33 mg/m^3,甲醛去除率达到88.29%.提供了一种高效的去除甲醛的催化剂合成方法,这种整体式催化剂为室内甲醛催化净化拓展了新的思路.
With the continuous improvement of material life,formaldehyde has become the main substance of indoor air pollution.For indoor air purification,the removal of formaldehyde becomes particularly important.Manganese dioxide(MnO2)was in-situ loaded onto non-woven fabric made of polyethylene terephthalate(PET)by water bath method,which has mild reaction conditions and simple processing.The synthesized MnO2/PET composites were characterized by scanning electron microscope(SEM),diffraction of X-rays(XRD)and specific surface area test(BET),imitating the indoor environment to make the initial concentration of2.84mg/m3,after6h,and making the concentration of the formaldehyde to0.33mg/m3,with the removal rate of formaldehyde reaching88.29%.This study provides an efficient method for the synthesis of formaldehyde oxidation catalyst,which provides a new idea for indoor formaldehyde catalysis.
作者
周祖卫
余倩
郝志峰
张佐宏
罗银好
余林
戴立松
Zhou Zu-wei;Yu Qian;Hao Zhi-feng;Zhang Zuo-hong;Luo Yin-hao;Yu Lin;Dai Li-song(School of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou 510006, China;Foshan Peico Technology Co., Ltd, Foshan 528200, China;China Office, Surface Measurement Systems,Beijing 101300, China)
出处
《广东工业大学学报》
CAS
2018年第2期6-10,共5页
Journal of Guangdong University of Technology
基金
国家自然科学基金资助项目(51678160)
广东省科技计划项目(2016A020221033)
广州市科技计划项目(201704020202)
佛山高新区战略性新兴产业发展项目
关键词
无纺布
二氧化锰
甲醛
催化分解
高效
non-woven fabric
manganese dioxide
formaldehyde
catalytic oxidation
efficient
