化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (2) : 103-107.

新材料与新技术

Ag掺杂MnO₂的制备及其对甲醛的催化降解

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Preparation of Ag-doped MnO₂ and catalytic degradation of formaldehyde

Li Guohan, Ding Jiandong, Shen Yongjun, Ni Zhaohui, Jing Xiaohui

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Received		Published
2017-10-09		2019-02-20
Issue Date	Revised Date
2019-03-18	2017-10-09

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摘要

采用低温液相氧化还原法制备了Ag掺杂MnO₂。利用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、比表面积(BET)、X射线能谱(EDS)和傅里叶变换红外光谱(FT-IR)对制备的样品进行了表征分析。以Ag掺杂MnO₂为催化剂,在室温、常压、无光照条件下对甲醛气体进行了催化降解实验。结果表明:Ag掺杂有效提高了MnO₂的催化活性和对甲醛降解效果,当Ag掺杂量为5%(wt,质量分数,下同)时,催化活性最高。20g Ag掺杂量为5%的Ag-MnO₂对初始浓度为20mg/m³的甲醛气体催化降解4h时,有效降解率达99.65%。

Abstract

Ag-doped MnO₂ catalysts were fabricated using the method of low-temperature liquid phase redox.The prepared samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),brunauer emmett teller (BET),X-ray energy dispersive spectroscopy (EDS) and fourier transform infrared spectroscopy (FT-IR).The catalytic degradation of formaldehyde was conducted under normal temperature and pressure as well as without illumination.The results indicated that the appropriate amount of Ag doping significantly increased the catalytic activity,and Ag-doped MnO₂ with 5% doping amount of Ag showed the highest catalytic activity.The effective degradation efficiency reached 99.65%,while formaldehyde with initial concentration of 20mg/m³ was degraded by 20g of 5Ag-MnO₂ for 4h.

关键词

银掺杂 / 二氧化锰 / 催化降解 / 甲醛

Key words

Ag doping / manganese dioxide / catalytic oxidation / formaldehyde

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Ag掺杂MnO₂的制备及其对甲醛的催化降解[J]. 化工新型材料, 2019, 47(2): 103-107 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] 韩瑛玉,张华.载银氧化锰复合催化剂的制备及其室温下催化氧化甲醛性能[J].化工新型材料,2014,42(9):135-140.
[2] 杨俊涛,余倩,沈亮,等.ABS基体化学镀铂催化剂室温净化甲醛的研究[J].化工新型材料,2015,43(6):235-237.
[3] 徐秋香,姜利利,陈云露.纺织品中甲醛含量超标的危害及控制方法[J].山东纺织科技,2016,57(5):24-26.
[4] 蔡健,胡将军,张雁.改性活性炭纤维对甲醛吸附性能的研究[J].环境科学与技术,2004,27(3):16-19.
[5] Rengga W D P,Chafidz A,Sudibandriyo M,et al.Silvernano-particles deposited on bamboo-based activated carbon for removal of formaldehyde[J].Journal of Environmental Chemical Engineering,2017,5(2):1657-1665.
[6] 高如琴,郝丹迪,耿悦.多孔陶瓷固载TiO₂薄膜的制备及甲醛光催化动力学[J].复合材料学报,2016,33(1):142-148.
[7] Duan Y Q,Yang S P,Yu J L,et al.Photocatalytic degradation of gaseous formaldehyde by Fe-doped ZnO nanorods grown on ceramic spheres[J].Chinese Journal of Inorganic Chemistry,2014,30(7):1673-1677.
[8] 程海军,丁欣宇,沈拥军,等.介孔二氧化锰的制备及催化氧化甲醛的研究[J].印染助剂,2016,33(8):5-9.
[9] 黄薇.室内空气中甲醛污染控制研究[D].南昌:南昌大学,2007.
[10] Lenoble V,Laclautre C,Serpaud B,et al.As(Ⅴ) retention and As(Ⅲ) simultaneous oxidation and removal on a MnO₂-loaded polystyrene resin[J].Science of the Total Environment,2004,326(1-3):197-207.
[11] 王杰.二氧化锰负载的金、银催化剂的制备及其光热催化性能研究[D].呼和浩特:内蒙古大学,2014.
[12] Yu X,He J,Wang D,et al.Facile Controlled synthesis of Pt/MnO₂ nanostructured catalysts and their catalytic performance for oxidative decomposition of formaldehyde[J].Journal of Physical Chemistry C,2012,116(1):851-860.
[13] Chen D,Qu Z,Sun Y,et al.Identification of reaction intermediates and mechanism responsible for highly active HCHO oxidation on Ag/MCM-41 catalysts[J].Applied Catalysis B-Environmental,2013,142-143(5):838-848.
[14] Chen L C,Huang C M,Tsai F R.Characterization and photocatalytic activity of K⁺-doped TiO₂ photocatalysts[J].Journal of Molecular Catalysis A,2006,265(1-2):133-140.
[15] Liu S,Qin X.Preparation of a Ag-MnO₂/graphene composite for the oxygen reduction reaction in alkaline solution[J].Rsc Advances,2015,5(20):15627-15633.
[16] 石建行.MnO₂的掺杂及其催化氧化性能研究[D].重庆:重庆大学,2016.
[17] 黄海燕.纳米TiO₂/VACF光催化层净化室内空气中甲醛的实验研究[D].重庆:重庆大学,2006.
[18] Zhang W,Mu B,Wang A.Halloysite nanotubes template-induced fabrication of carbon/manganese dioxide hybrid nanotubes for supercapacitors[J].Ionics,2015,21(8):2329-2336.
[19] Anirudhan T S,Jalajamony S,Sreekumari S S.Adsorption of heavy metal ions from aqueous solutions by amine and carboxylate functionalised bentonites[J].Applied Clay Science,2012,65-66(9):67-71.
[20] 姜良艳,周仕学,王文超,等.活性炭负载锰氧化物用于吸附甲醛[J].环境科学学报,2008,28(2):337-341.