A New Method for Preparing Nannsized γ-MnO2--Oxido-reduction Method under Ultrasonic Irradiation

Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (16): 1557-1560. Previous Articles Next Articles

一种新的制备纳米γ-MnO₂的方法——超声辐射氧化还原法

王文亮¹, 李东升^2,3, 王继武², 薛岗林³, 史启祯³

1. 陕西师范大学化学与材料科学学院, 西安, 710062;
2. 延安大学化学化工学院, 延安, 716000;
3. 西北大学化学系, 西安, 710069

投稿日期:2003-07-17 修回日期:2004-04-16 发布日期:2014-02-17
通讯作者: wlwang@snnu.edu.cn
作者简介:王文亮E-mail:wlwang@snnu.edu.cn
基金资助:
陕西省自然科学基金(No.2002N₂1和陕西省物理无机化学重点实验室访问学者基金(Nos.01JF06,02JF05)资助项目.

A New Method for Preparing Nannsized γ-MnO₂--Oxido-reduction Method under Ultrasonic Irradiation

WANG Wen-Liang¹, LI Dong-Sheng^2,3, WANG Ji-Wu², XUE Gang-Lin³, SHI Qi-Zhen³

1. School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062;
2. Department of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000;
3. Department of Chemistry, Northwest University, Xi'an 710069

Received:2003-07-17 Revised:2004-04-16 Published:2014-02-17

Abstract

Using KMnO₄ and MnSO₄ as raw materials, two kinds of manganese oxides were prepared by oxido-reduction method under ultrasonic radiation and normal precipitation method, respectively.XRD, ICP, XPS, TEM, FT-IR and BET surface area measurement techniques were used to investigate the properties of the products.The results show that ultrasonic radiation has a great impact on reaction system, and it was found that the γ-MnO₂ powder synthesized under ultrasonic radiation has an average diameter of 10 nm with sphere-shape and good dispersity, and the precipitation product obtained from normal oxidation-reduction reaction is KMn₈O₁₆, in which K⁺ exists in lattice of KMn₈O₁₆ and can not be removed by washing.

Key words: ultrasonic radiation, oxido-reduction, γ-MnO₂, nanometer powder, catalytic activity

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WANG Wen-Liang, LI Dong-Sheng, WANG Ji-Wu, XUE Gang-Lin, SHI Qi-Zhen. A New Method for Preparing Nannsized γ-MnO₂--Oxido-reduction Method under Ultrasonic Irradiation[J]. Acta Chimica Sinica, 2004, 62(16): 1557-1560.

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一种新的制备纳米γ-MnO₂的方法——超声辐射氧化还原法

A New Method for Preparing Nannsized γ-MnO₂--Oxido-reduction Method under Ultrasonic Irradiation

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一种新的制备纳米γ-MnO2的方法——超声辐射氧化还原法