不同长度α-MnO<sub>2</sub>纳米线的可控合成及其催化燃烧性能的研究

廖秀红; 蒋勇; 简国坤; 程高; 孙明

doi:10.12052/gdutxb.180054

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

不同长度α-MnO₂纳米线的可控合成及其催化燃烧性能的研究

综合研究 | 更新时间：2026-05-27

- 不同长度α-MnO₂纳米线的可控合成及其催化燃烧性能的研究
- Controllable Synthesis of α-MnO₂ Nanowire with Different Length and Its Catalytic Combustion Activity
- 广东工业大学学报 2018年35卷第5期页码：75-79
- 作者机构：
  
  广东工业大学　轻工化工学院,广东,广州,510006
- 作者简介：
  
  廖秀红(1991–)，女，硕士研究生，主要研究方向为过渡金属氧化物的控制合成及性能
  孙明(1978–)，男，副教授，博士，主要研究方向为纳米材料及其应用. E-mail：sunmgz@gdut.edu.cn
- 基金信息：
  
  广东省教育厅特色创新项目(2015KTSCX027);广东省自然科学基金资助项目（2018A030310563）
- DOI：10.12052/gdutxb.180054
  中图分类号： O614.7
- 网络首发：2018-07-10，
  
  纸质出版：2018
- 稿件说明：
移动端阅览
廖秀红, 蒋勇, 简国坤, 程高, 孙明. 不同长度α-MnO₂纳米线的可控合成及其催化燃烧性能的研究[J]. 广东工业大学学报, 2018, 35(5): 75-79. DOI: 10.12052/gdutxb.180054.

Liao Xiu-hong, Jiang Yong, Jian Guo-kun, et al. Controllable Synthesis of α-MnO₂ Nanowire with Different Length and Its Catalytic Combustion Activity[J]. 2018, 35(5): 75-79. DOI: 10.12052/gdutxb.180054.
廖秀红, 蒋勇, 简国坤, 程高, 孙明. 不同长度α-MnO₂纳米线的可控合成及其催化燃烧性能的研究[J]. 广东工业大学学报, 2018, 35(5): 75-79. DOI: 10.12052/gdutxb.180054. DOI：

Liao Xiu-hong, Jiang Yong, Jian Guo-kun, et al. Controllable Synthesis of α-MnO₂ Nanowire with Different Length and Its Catalytic Combustion Activity[J]. 2018, 35(5): 75-79. DOI: 10.12052/gdutxb.180054. DOI：

摘要

以高锰酸钾为锰源和氧化剂

通过控制乙酸的用量在水热条件可控合成出具有不同长度的α-MnO

纳米线

采用X射线衍射(XRD)、扫描电镜(SME)、透射电镜(TEM)、拉曼光谱(Raman)、程序升温还原(H

-TPR)等技术对制备的材料的结构以及氧化还原能力进行了表征

并考察了α-MnO

纳米线长度对二甲醚催化燃烧性能的影响. 结果表明

α-MnO

纳米线的长度受乙酸含量/酸度的影响

随着乙酸含量增加而减小. 纳米线长度还影响α-MnO

的氧化还原性能和二甲醚催化燃烧性能. 其中采用1.4 ml乙酸制得的具有中等长度(4~8 μm)的α-MnO

纳米线

催化性能最好

其起燃温度为167 ℃

完全燃烧温度为240 ℃

20 h的短期寿命测试表明

该样品具有较好的稳定性.

Abstract

Using KMnO

as the source of Mn and the oxidant

the α-MnO

nanowires with different length were synthesized by controlling the amount of CH

COOH under hydrothermal conditions. The structure and redox properties of the α-MnO

were characterized by X-ray powder diffraction (XRD)

scanning electron microscopy (SEM)

transmission electron microscopy (TEM)

Raman and hydrogen temperature-programmed reduction (H

-TPR) techniques. The catalytic activity of the α-MnO

in dimethyl ether (DME) comb

ustion was also investigated. The results indicated that the length of α-MnO

nanowire was determined by the amount of CH

COOH

and the length shortened with the rise of the CH

COOH concentration. The length of the α-MnO

nanowire affected its redox property and catalytic combustion activity. The α-MnO

nanowire with the moderate length of 4-8 μm synthesized using 1.4 ml of CH

COOH showed the best catalytic activity with the initial conversion temperature of 167 ℃ and the total conversion temperature of 240 ℃ for DME combustion. The time-on-stream 20 h-test shows that the prepared α-MnO

nanowire has relatively good stability.

关键词

Keywords

references

SHEN X, DING Y, LIU J, et al . Synthesis, characterization, and catalytic applications of manganese oxide octahedral molecular sieve (OMS) nanowires with a 2 × 3 tunnel structure [J ] . Chem Mater, 2004, 16(25): 5327-5335.

XU H, YAN N, QU Z, et al . Gaseous heterogeneous catalytic reactions over Mn-based oxides for environmental applications: A critical review [J ] . Environ Sci Technol, 2017, 51(16): 8879-8892.

HOUSEL L M, WANG L, ABRAHAM A, et al . Investigation of α-MnO 2 tunneled structures as model cation hosts for energy storage [J ] . Acc Chem Res, 2018, 51(3): 575-582.

FU Z W, CEHNG G, LIN T, et al . The preparation of MnO 2 and application in catalytic combustion of toluene [J ] . Journal of Guangdong University of Technology, 2016, 33(2): 85-90.

CHENG G, YU L, HE B, et al . Catalytic combustio n of dimethyl ether over α-MnO 2 nanostructures with different morphologies [J ] . Appl Surf Sci., 2017, 409: 223-231.

LONG Y, HUI J F, WANG P P, et al . α-MnO 2 nanowires as building blocks for the construction of 3D macro-assemblies [J ] . Chem Commun, 2012, 48(47): 5925-5927.

LIU J, MARGEAT O, DACHRAOUI W, et al . Gram-scale synthesis of ultrathin tungsten oxide nanowires and their aspect ratio-dependent photocatalytic activity [J ] . Adv Funct Mater, 2014, 24(38): 6029-6037.

TANG H, ZHOU Z, SODANO H A. Relationship between BaTiO 3 Nanowire aspect ratio and the dielectric permittivity of nanocomposites [J ] . ACS Appl Mater Interfaces, 2014, 6(8): 5450-5455.

WANG X, LI Y. Selected-control hydrothermal synthesis of α- and β-MnO 2 single crystal nanowires [J ] . J Am Chem Soc, 2002, 124(12): 2880-2881.

GAO Y, WANG Z, WAN J, et al . A facile route to synthesize uniform single-crystalline-MnO 2 nanowires [J ] . J Cryst Growth, 2005, 279(3-4): 415-419.

YUAN J, LIU X, AKBULUT O, et al . Superwettin g nanowire membranes for selective absorption [J ] . Nature Nanotechnology, 2008, 3(6): 332-336.

LAN B, YU L, LIN T, et al . Multifunctional free-standing membrane from the self-assembly of ultralong MnO 2 nanowires [J ] . ACS Appl Mater Interfaces, 2013, 5(15): 7458-7464.

VOLNINA E A, KIPNIS M A, KHADZHIEV S N. Catalytic chemistry of dimethyl ether (review) [J]. Pet Chem, 2017, 57(5): 353-373.

GAO T, FJELLVÅG H, NORBY P. A comparison study on Raman scattering properties of α-and β-MnO 2 [J ] . Anal Chim Acta, 2009, 648(2): 235-239.

VILLEGAS J C, GARCES L J, GOMEZ S, et al . Particle size control of cryptomelane nanomaterials by use of H 2 O 2 in acidic conditions [J ] . Chem Mater, 2005, 17(7): 1910-1918.

SUN M, LAN B, LIN T, et al . Controlled synthesis of nanostructured manganese oxide: crystalline evolution and catalytic activities [J ] . CrystEngComm, 2013, 15(35): 7010-7018.

WANG J, LI J, ZHANG P, et al . Understanding the “seesaw effect” of interlayered K + with different structu re in manganese oxides for the enhanced formaldehyde oxidation [J ] . Appl Catal, B, 2018, 224: 863-870.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

二氧化锰制备及催化燃烧甲苯性能研究

基于路况参数的混合动力机车能量管理策略研究

储能变流器电能质量治理策略研究

面向灾后救援的多无人机通感算一体化资源分配优化方法

人工噪声辅助无人机太赫兹安全通信的鲁棒设计

不同长度α-MnO2纳米线的可控合成及其催化燃烧性能的研究

Controllable Synthesis of α-MnO2 Nanowire with Different Length and Its Catalytic Combustion Activity

DOI：10.12052/gdutxb.180054

摘要

Abstract

关键词

Keywords

references

不同长度α-MnO₂纳米线的可控合成及其催化燃烧性能的研究

Controllable Synthesis of α-MnO₂ Nanowire with Different Length and Its Catalytic Combustion Activity