Microwave hydrothermal synthesis of α-MnMoO<sub>4</sub>nanorods for high electrochemical performance supercapacitors

Jayasubramaniyan, S.; Balasundari, S.; Rayjada, P. A.; Satyanarayana, N.; Muralidharan, P.

doi:10.1039/c8ra02751j

Cited by 37 publications

(7 citation statements)

References 42 publications

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“…The crystal structure of the ferrite samples was investigated using X-ray diffractions (XRD). All the samples showed the diffraction patterns corresponding to the cubic spinel crystal structure such as (220), (311), and (400) corresponding to 2θ around 30, 36 and 43, respectively [30], as shown in Fig. 1.…”

Section: Ferrite Phase and Crystal Parameters Investigationmentioning

confidence: 94%

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Shebl¹,

Hassan²,

Salama³

et al. 2019

Preprint

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This study aims to synthesize manganese zinc ferrite nanoparticles (Mn0.5Zn0.5Fe2O4 NPs) using a green chemistry synthesis technique and investigate their efficiency as nanofertilizers for squash plant (Cucurbita pepo L). In this work, Mn0.5Zn0.5Fe2O4 NPs were successfully prepared at different temperatures via simple template-free microwave-assisted hydrothermal route and used as foliar nanofertilizers for squash plant. The physicochemical characteristics of the as-prepared ferrites were investigated using X-ray diffraction (XRD), N2 adsorption-desorption isotherm, field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HR-TEM) techniques. The prepared nanoferrites showed type IV adsorption isotherm characteristic for mesoporous materials. FE-SEM and HR-TEM imaging proves the production cubic shaped nanoparticles with average particle size 10-12 nm. Also the impact of using different concentrations of Mn0.5Zn0.5Fe2O4 NPs on vegetative growth, minerals content and the yield of squash plant were investigated. The result showed that the highest vegetative growth for squash appeared with plants supplied by Mn0.5Zn0.5Fe2O4 NPs synthesized at 180°C. On the contrary, the yield of squash recorded the best with 160°C. As for the use of different concentrations of Mn0.5Zn0.5Fe2O4 NPs, it was found that the use of the lowest concentrations gave the highest values of vegetative growth and yield characters. The chemical content of the squash plant differs from the components of proximate value and the elements according to the temperature used in the composition of the compound Mn0.5Zn0.5Fe2O4 NPs and its concentrations. Accordingly, these nanoferrites can be considered as good candidates for Cucurbita pepo L fertilization.

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Section: Ferrite Phase and Crystal Parameters Investigationmentioning

confidence: 94%

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Shebl¹,

Hassan²,

Salama³

et al. 2019

Preprint

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“…The combination of highly conductive material and metal oxide nanoparticles produces hybrid nanocomposite, which is a promising candidate for supercapacitor applications [ 7 , 8 ]. Various metal oxides such as CoMoO 4 [ 9 ], FeMoO 4 [ 10 ], NiCo 2 O 4 [ 11 ], MnMoO 4 [ 12 ], and NiMoO 4 [ 13 , 14 ] have all been used in supercapacitor electrodes. However, nickel molybdate (NiMoO 4 ) is considered an especially promising material for the electrode due to its high theoretical specific capacitance, battery-type behavior, low cost, and abundance [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Treatment of NiMoO4/nanographite nanocomposite electrodes using flexible graphite substrate for aqueous hybrid supercapacitors

et al. 2021

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The cycling performance of supercapacitors sometimes becomes limited when electrode materials slough off during frequent charge–discharge cycles, due to weak bonding between the active material and the current collector. In this work, a flexible graphite foil substrate was successfully used as the current collector for supercapacitor electrodes. Graphite foil substrates were treated in different ways with different acid concentrations and temperatures before being coated with an active material (NiMoO4/nanographite). The electrode treated with HNO3 (65%) and H2SO4 (95%) in a 1:1 ratio at 24°C gave better electrochemical performance than did electrodes treated in other ways. This electrode had capacitances of 441 and 184 Fg–1 at current densities of 0.5 and 10 Ag-1, respectively, with a good rate capability over the current densities of the other treated electrodes. SEM observation of the electrodes revealed that NiMoO4 with a morphology of nanorods 100–120 nm long was properly accommodated on the graphite surface during the charge–discharge process. It also showed that treatment with high-concentration acid created an appropriately porous and rough surface on the graphite, enhancing the adhesion of NiMoO4/nanographite and boosting the electrochemical performance.

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“…A complete evaluation of the CV curves of both electrodes indicates that as the scan rates decrease, so inversely do the specific capacitances, suggesting the mobility of the electrolyte ions increases while applying higher scan rates, causing the ionic exchange to decline. 52 It is specified from the capacitances calculated from both GCD and CV curves that the MMO/C electrode reveals higher specific capacitance than that for the MMO.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of manganese molybdate/MWCNT nanostructure composite with a simple approach for supercapacitor applications

2022

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Microwave hydrothermal synthesis of α-MnMoO₄nanorods for high electrochemical performance supercapacitors

Abstract: Pristine α-MnMoO4 nanorods were facilely prepared via co-precipitation (Cp) and microwave hydrothermal (MH) methods.

Cited by 37 publications

References 42 publications

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Treatment of NiMoO4/nanographite nanocomposite electrodes using flexible graphite substrate for aqueous hybrid supercapacitors

Synthesis of manganese molybdate/MWCNT nanostructure composite with a simple approach for supercapacitor applications

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Microwave hydrothermal synthesis of α-MnMoO4nanorods for high electrochemical performance supercapacitors

Abstract: Pristine α-MnMoO4 nanorods were facilely prepared via co-precipitation (Cp) and microwave hydrothermal (MH) methods.

Cited by 37 publications

References 42 publications

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Green synthesis of manganese zinc ferrite nanoparticles and their application as nanofertilizers for Cucurbita pepo L.

Treatment of NiMoO4/nanographite nanocomposite electrodes using flexible graphite substrate for aqueous hybrid supercapacitors

Synthesis of manganese molybdate/MWCNT nanostructure composite with a simple approach for supercapacitor applications

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Microwave hydrothermal synthesis of α-MnMoO₄nanorods for high electrochemical performance supercapacitors