Synthesis and Surface Characterization of γ-MnO2 Nanostructures
Joint Authors
Xiang, L.
Liu, Chengxiang
Wang, Jing
Tian, Jiarui
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-12
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
A facile method was developed to synthesize γ-MnO2 with different structures and surface properties in this paper.
γ-MnO2 was prepared by oxidation of MnSO4 with Na2S2O8 at 90°C for 2.0 h.
γ-MnO2 formed at initial pH 1.0 (M1) and 8.5 (M2) was composed of MnO1.93·0.23H2O and MnO1.96·0.18H2O, respectively.
The higher ratio of pyrolusite in M2 (Pr=43.90%) than that in M1 (Pr=24.86%) indicated that compared with M1, M2 would absorb more protons since the planar oxygen atoms in pyrolusite were incompletely coordinated and liable to absorb the protons.
Meanwhile, the higher oxidation valence of Mn in M2 than that in M1 revealed that the Mn atoms in M2 were more liable to draw the electron density from the surface oxygen atoms in hydroxyl groups.
The structural and compositional differences between M1 and M2 were the major reasons why M2 possessed a higher surface potential and a weaker ability to absorb Zn2+ ions.
American Psychological Association (APA)
Liu, Chengxiang& Wang, Jing& Tian, Jiarui& Xiang, L.. 2013. Synthesis and Surface Characterization of γ-MnO2 Nanostructures. Journal of Nanomaterials،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1031362
Modern Language Association (MLA)
Liu, Chengxiang…[et al.]. Synthesis and Surface Characterization of γ-MnO2 Nanostructures. Journal of Nanomaterials No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-1031362
American Medical Association (AMA)
Liu, Chengxiang& Wang, Jing& Tian, Jiarui& Xiang, L.. Synthesis and Surface Characterization of γ-MnO2 Nanostructures. Journal of Nanomaterials. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1031362
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1031362