The influence of surfactants (anionic sodium dodecyl sulfate, and nonionic tert-octylphenol ethoxylate with 9.5EO) and their mixtures on the adsorption of carboxymethylcellulose (CMC) in the presence of 0.001 M NaCl on the manganese dioxide surface (MnO(2)) was studied. The increase in CMC adsorption was observed in all measured systems in the presence of surfactants. The reason for this is the...

In this paper we report the effect of cetyltrimethylammonium bromide, CTAB on the oxidative degradation of tyrosine by permanganate. The reaction rate bears a first-order dependence on the [MnO(4)(-)] under pseudo-first-order conditions (large excess of [tyrosine] for at least 10 times over [MnO(4)(-)]) in presence of 10.0x10(-4)moldm(-3) CTAB. The effect of total [CTAB] on the reaction rate wa...

This article presents the results of an exploratory study examining the influence of national and organizational cultures on technology use in a multinational organizational (MNO) context. Data were collected from 121 respondents of a multinational organization in the Asia Pacific with headquarters in Australia and three subsidiaries in Asia: Korea, Malaysia, and Thailand. Even though significa...

A new electrocatalyst, MnO(2)/graphene oxide hybrid nanostructure was successfully synthesized for the nonenzymatic detection of H(2)O(2). The morphological characterization was examined by scanning electron microscopy and transmission electron microscopy. The MnO(2)/graphene oxide based electrodes showed high electrochemical activity for the detection of H(2)O(2) in alkaline medium. The nonenz...

Efficient charge separation is a critical factor for solar energy conversion by heterogeneous photocatalysts. This paper describes the complete spatial separation of oxidation and reduction cocatalysts to enhance the efficacy of charge separation and surface reaction. Specifically, we design Pt@TiO2@MnO x hollow spheres (PTM-HSs) with Pt and MnO x loaded onto the inner and outer surface of TiO2...

The magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (gamma-Mn(2)O(3) or Mn(3)O(4)) depends on the size of the nanoparticles. Structural and magnetic characterizations concur that while the smallest nanoparticles have a predomina...

Inhomogeneous phase separation and domain wall dynamics in the orthorhombically distorted La 0.87 MnO x Abstract. We observe the interesting magnetization and resistivity results in the orthorhombically distorted self doped manganite, La 0.87 MnO x. A significant irreversibility between zero-field-cooled and field-cooled resistivities as well as magnetization data is clearly observed up to a te...

in this research, the activity of mno, produced during steel making in aluminate-rich slags, was investigated.according to thermodynamic equations and mathematical calculation, a series of relations was obtained forevaluation of oxide activity using masson’s theory. the obtained relations were solved according to levenberg- marquardt method and using matlab software. the results were correlated...

The oxidation of arsenite (As(III)) via Mn-oxides is an important process for natural arsenic (As) cycling and for developing in situ strategies for remediation of As-contaminated waters. In this study, the influence of goethite (alpha-FeOOH), phosphate, and bacteria/biopolymer coatings on the initial As(III) oxidation kinetics by a hydrous Mn-oxide (delta-MnO(2)) is examined via both batch exp...

Porous MnO/C microspheres have been successfully fabricated by a fast co-precipitation method in a T-shaped microchannel reactor. The structures, compositions, and electrochemical performances of the obtained MnO/C microspheres are characterized by X-ray diffraction, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller analysis, ...