Preparation of nanofibers consisting of MnO/Mn3O4 by using the electrospinning technique: the nanofibers have two band-gap energies

被引：36

作者：

Barakat, Nasser A. M. ^{[1
,2
]}

Woo, Kee-Do ^{[3
]}

Ansari, S. G. ^{[4
]}

Ko, Jung-Ahn ^{[5
]}

Kanjwal, Muzafar A. ^{[5
]}

Kim, Hak Yong ^{[2
,5
]}

机构：

[1] Menia Univ, Fac Engn, Dept Chem Engn, El Minia, Egypt

[2] Chonbuk Natl Univ, Coll Engn, Dept Bionanosyst Engn, Jeonju 561756, South Korea

[3] Chonbuk Natl Univ, RCIT, Div Adv Mat, Jeonju 561756, South Korea

[4] Chonbuk Natl Univ, Sch Chem Engn, Jeonju 561756, South Korea

[5] Chonbuk Natl Univ, Dept Text Engn, Jeonju 561756, South Korea

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 95卷 / 03期

关键词：

MANGANESE OXIDE NANOFIBERS; THERMAL-DECOMPOSITION; MNO2; NANOSTRUCTURES;

D O I：

10.1007/s00339-008-5067-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, nanofibers consisting of manganese monoxide (MnO), which is hard to prepare because of the chemical activity of the manganese metal, and the popular Mn3O4 have been synthesized via the electrospinning technique. The nanofibers were obtained by electrospinning of an aqueous sol-gel consisting of manganese acetate tetra-hydrate and poly(vinyl alcohol). The obtained nanofiber mats were dried in vacuum at 80A degrees C for 24 h and then calcined in argon atmosphere at 900A degrees C for 5 h. According to X-ray diffraction results, the obtained nanofibers contain 65% MnO. Transmission electron microscope analysis reveals good crystallinity of the produced nanofibers. UV-visible spectroscopic analysis has indicated that the produced nanofibers have two band-gap energies, 2 and 3.7 eV, which enhances utilizing of the nanofibers in different applications.

引用

页码：769 / 776

页数：8

共 34 条

[1] KINETICS OF THERMAL-DECOMPOSITION OF METAL ACETATES [J].

AFZAL, M ;

BUTT, PK ;

AHMAD, H .

JOURNAL OF THERMAL ANALYSIS, 1991, 37 (05) :1015-1023

[2] Surface properties of sol-gel synthesized δ-MnO2 as assessed by N2 sorptometry, electron microscopy, and X-ray photoelectron spectroscopy [J].

AL-Sagheer, FA ;

Zaki, MI .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2000, 173 (1-3) :193-204

[3] Characterization of manganese and iron oxides as combustion catalysts for propane and propene [J].

Baldi, M ;

Escribano, VS ;

Amores, JMG ;

Milella, F ;

Busca, G .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 17 (03) :L175-L182

[4] Synthesis and optical properties of two cobalt oxides (CoO and Co3O4) nanofibers produced by electrospinning process [J].

Barakat, Nasser A. M. ;

Khil, Myung Seob ;

Sheikh, Faheem A. ;

Kim, Hak Yong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (32) :12225-12233

[5] Particle size control and self-assembly processes in novel colloids of nanocrystalline manganese oxide [J].

Brock, SL ;

Sanabria, M ;

Suib, SL ;

Urban, V ;

Thiyagarajan, P ;

Potter, DI .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (35) :7416-7428

[6] Electrical conductivity of Co3O4 films prepared by chemical vapour deposition [J].

Cheng, CS ;

Serizawa, M ;

Sakata, H ;

Hirayama, T .

MATERIALS CHEMISTRY AND PHYSICS, 1998, 53 (03) :225-230

[7] ELECTROCHEMISTRY AND PHOTOELECTROCHEMISTRY OF IRON(III) OXIDE [J].

DAREEDWARDS, MP ;

GOODENOUGH, JB ;

HAMNETT, A ;

TREVELLICK, PR .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1983, 79 :2027-2041

[8] Thermal decomposition of nickel acetate tetrahydrate:: an integrated study by TGA, QMS and XPS techniques [J].

De Jesus, JC ;

González, I ;

Quevedo, A ;

Puerta, T .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2005, 228 (1-2) :283-291

[9] Synthesis of nanocrystalline Mn-oxides by gas condensation [J].

Dimesso, L ;

Heider, L ;

Hahn, H .

SOLID STATE IONICS, 1999, 123 (1-4) :39-46

[10] Electrospun manganese oxide nanofibers as anodes for lithium-ion batteries [J].

Fan, Quan ;

Whittingham, M. Stanley .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (03) :A48-A51

← 1 2 3 4 →