Mn3O4 nanoplates and nanoparticles: Synthesis, characterization, electrochemical and catalytic properties

Ahmed, Khalid Abdelazez Mohamed; Zeng, Qiumei; Wu, Kangbing; Huang, Kaixun

doi:10.1016/j.jssc.2010.01.015

Cited by 86 publications

(30 citation statements)

References 39 publications

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“…It is anticipated that the strongest adsorption sites result in (Co,Mn) 3 O 4 and these sites have a even distribution on the GO. The reactions can be described by the following equations [19]. …”

Section: Resultsmentioning

confidence: 99%

Fabrication of (Co,Mn)3O4/rGO Composite for Lithium Ion Battery Anode by a One-Step Hydrothermal Process with H2O2 as Additive

Cui

Deng

et al. 2016

PLoS ONE

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Binary transition metal oxides have been regarded as one of the most promising candidates for high-performance electrodes in energy storage devices, since they can offer high electrochemical activity and high capacity. Rational designing nanosized metal oxide/carbon composite architectures has been proven to be an effective way to improve the electrochemical performance. In this work, the (Co,Mn)3O4 spinel was synthesized and anchored on reduced graphene oxide (rGO) nanosheets using a facile and single hydrothermal step with H2O2 as additive, no further additional calcination required. Analysis showed that this method gives a mixed spinel, i.e. (Co,Mn)3O4, having 2+ and 3+ Co and Mn ions in both the octahedral and tetrahedral sites of the spinel structure, with a nanocubic morphology roughly 20 nm in size. The nanocubes are bound onto the rGO nanosheet uniformly in a single hydrothermal process, then the as-prepared (Co,Mn)3O4/rGO composite was characterized as the anode materials for Li-ion battery (LIB). It can deliver 1130.6 mAh g-1 at current density of 100 mA g-1 with 98% of coulombic efficiency after 140 cycles. At 1000 mA g-1, the capacity can still maintain 750 mAh g-1, demonstrating excellent rate capabilities. Therefore, the one-step process is a facile and promising method to fabricate metal oxide/rGO composite materials for energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Fabrication of (Co,Mn)3O4/rGO Composite for Lithium Ion Battery Anode by a One-Step Hydrothermal Process with H2O2 as Additive

Cui

Deng

et al. 2016

PLoS ONE

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“…Nanostructured mixed valence oxides (such as Mn 3 O 4 ) were shown to effectively catalyze the oxidation of formaldehyde at room temperature [16]. In most of the cases mentioned here, low temperature oxidation of formaldehyde likely takes place via a Mars-van Krevelen (MvK) mechanism, as is usually described for high temperature catalysis, in 4 which lattice oxygen atoms from the catalyst participate in the initial step of the reaction, and are subsequently replenished by reduction of atmospheric O 2 MnO [17][18]:…”

Section: C) Such Enhanced Catalyticmentioning

confidence: 99%

Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts

Sidheswaran

Destaillats

Sullivan

et al. 2011

Applied Catalysis B: Environmental

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Manganese oxide-based catalysts have been synthesized and tested for the abatement of formaldehyde, an ubiquitous indoor pollutant which is not effectively eliminated by most air cleaning technologies. Catalysts were prepared by co-precipitation of MnSO 4 and NaMnO 4 followed by curing at 100, 200 and 400 0 C. Characterization was performed using X-ray diffractometry (XRD), porosimetry, scanning electron microscopy (SEM), and inductively coupled plasma -mass spectrometry (ICP-MS). Diffractograms Research Highlights:). Due to the relatively low costs of synthesis and deployment of these catalysts, this technology is promising for maintaining low indoor formaldehyde levels, enabling energy-saving reductions of building ventilation rates.Synthesis of manganese oxide-based catalysts to remove indoor formaldehyde; High surface area and porosity; Small crystal size; Complete mineralization of formaldehyde;High activity maintained after processing up to 400 m 3 of formaldehyde-laden air.

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“…Further, nano-structured mixed valence oxides (such as Mn 3 O 4 ) were shown to effectively catalyze the oxidation of formaldehyde at room temperature (Ahmed et al 2010). A simple synthetic approach to produce nano-structured mixed valence oxides by reduction of KMnO 4 to yield products of general formula K x MnO 2 has also been described (Chen et al 2007).…”

Section: Formaldehyde (Ch 2 O) Is a Ubiquitous Indoor Pollutant Emittmentioning

confidence: 99%

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy

Sidheswaran¹

2010

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Mn3O4 nanoplates and nanoparticles: Synthesis, characterization, electrochemical and catalytic properties

Cited by 86 publications

References 39 publications

Fabrication of (Co,Mn)3O4/rGO Composite for Lithium Ion Battery Anode by a One-Step Hydrothermal Process with H2O2 as Additive

Fabrication of (Co,Mn)3O4/rGO Composite for Lithium Ion Battery Anode by a One-Step Hydrothermal Process with H2O2 as Additive

Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy

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