Simple glucose reduction route for one-step synthesis of copper nanofluids

Shenoy, U. Sandhya; Shetty, A. Nityananda

doi:10.1007/s13204-012-0169-6

Cited by 46 publications

(20 citation statements)

References 25 publications

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“…The peaks located at 232.4 eV are indicative of the presence of Mo 6+ (typically of MoO, BE value of 232.3–232.8 eV) . While the Mo 3d5/2 peaks located at 230.4 and 228.7 eV (typically Mo 4+ of MoS, BE value of 228.3–229.0 eV) are possibly related with the surface reduction of Mo 6+ caused by Cu + oxidation, the reducing nature of glucose or possible charge transfer from the carbon layer at surface . For samples discharged/charged to different stages, the dominant Mo 3d5/2 peak is located at 232.2–232.3 eV, correlating to the dominance of Mo 6+ .…”

Section: Resultsmentioning

confidence: 97%

Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Chen

Mohrhusen

Ali

et al. 2019

Adv Funct Materials

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Sodium ion batteries (SIBs) are promising alternatives to lithium ion batteries with advantages of cost effectiveness. Metal sulfides as emerging SIB anodes have relatively high electronic conductivity and high theoretical capacity, however, large volume change during electrochemical testing often leads to unsatisfactory electrochemical performance. Herein bimetallic sulfide Cu 2 MoS 4 (CMS) with layered crystal structures are prepared with glucose addition (CMS1), resulting in the formation of hollow nanospheres that endow large interlayer spacing, benefitting the rate performance and cycling stability. The electrochemical mechanisms of CMS1 are investigated using ex situ X-ray photoelectron spectroscopy and in situ X-ray absorption spectroscopy, revealing the conversion-based mechanism in carbonate electrolyte and intercalation-based mechanism in ether-electrolyte, thus allowing fast and reversible Na + storage. With further introduction of reduced graphene oxide (rGO), CMS1-rGO composites are obtained, maintaining the hollow structure of CMS1. CMS1-rGO delivers excellent rate performance (258 mAh g −1 at 50 mA g −1 and 131.9 mAh g −1 at 5000 mA g −1 ) and notably enhanced cycling stability (95.6% after 2000 cycles). A full cell SIB is assembled by coupling CMS1-rGO with Na 3 V 2 (PO 4 ) 3 -based cathode, delivering excellent cycling stability (75.5% after 500 cycles). The excellent rate performance and cycling stability emphasize the advantage of CMS1-rGO toward advanced SIB full cells assembly.

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Section: Resultsmentioning

confidence: 97%

Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Chen

Mohrhusen

Ali

et al. 2019

Adv Funct Materials

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“…It was observed that CuNW/PVDF had higher dielectric permittivity and lower dielectric loss than the MWCNT/PVDF nanocomposites at room temperature. Copper nanoparticles were usually utilized for improving the thermal properties of nanofluid with different base fluid [22][23][24][25]. Zeng et al [26] investigated the effect of copper nanowires with ultrahigh aspect ratio and sponge-like structure on the properties of organic phase change materials, and the thermal conductivity of the composite enhanced greatly compared with base materials.…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Thermal Conductivity of Composite Materials Containing Copper Nanowires

Zhu

et al. 2016

Journal of Nanomaterials

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The development of thermal conductive polymer composite is necessary for the application in thermal management. In this paper, the experimental and theoretical investigations have been conducted to determine the effect of copper nanowires (CuNWs) and copper nanoparticles (CuNPs) on the thermal conductivity of dimethicone nanocomposites. The CuNWs and CuNPs were prepared by using a liquid phase reduction method, and they were characterized through scanning electron microscopy (SEM) and X-ray diffraction (XRD). The experimental data show that the thermal conductivity of composites increases with the increase of filler. With the addition of 10 vol.% CuNWs, the thermal conductivity of the composite is 0.41 W/m/K. The normalized thermal conductivity enhancement factor is 2.73, much higher than that of the analogue containing CuNPs (1.67). These experimental data are in agreement with Nan’s model prediction. Due to the high aspect ratio of 1D CuNWs, they can construct thermal networks more effectively than CuNPs in the composite, resulting in higher thermal conductivity.

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“…The observed trend can be explained as follows. With the increase in the dilution, the overall concentration of the species decreases, the proximity between the precipitating atoms decreases and hence the collision between them is reduced, preventing the growth of particle and hence resulting in smaller size of the nanoparticles formed [11].…”

Section: Effect Of Dilutionmentioning

confidence: 99%

A Facile One Step Solution Route to Synthesize Cuprous Oxide Nanofluid

Sandhya

Nityananda

2013

Nanomaterials and Nanotechnology

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A cuprous oxide nanofluid stabilized by sodium lauryl sulfate, synthesized by using the one step method, has been reported. Nanofluids were synthesized by using a well‐ controlled surfactant‐assisted solution phase synthesis. The method involved reduction of copper acetate by glucose in a mixture of water and ethylene glycol serving as the base fluid. The synthesized fluid was characterized by X‐ray and electron diffraction techniques, in addition, transmission and field emission microscopic techniques and Fourier transform infra red spectroscopic analysis was undertaken. The rheological property, as well as the thermal conductivity of the fluid, were measured. The variation of reaction parameters considerably affected the size of the particles as well as the reaction rate. The uniform dispersion of the particles in the base fluid led to a stability period of three months under stationary state, augmenting the thermal conductivity of the nanofluid. The method is found to be simple, reliable and fast for the synthesis of Newtonian nanofluids containing cuprous oxide nanoparticles

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Simple glucose reduction route for one-step synthesis of copper nanofluids

Cited by 46 publications

References 25 publications

Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Thermal Conductivity of Composite Materials Containing Copper Nanowires

A Facile One Step Solution Route to Synthesize Cuprous Oxide Nanofluid

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Simple glucose reduction route for one-step synthesis of copper nanofluids

Cited by 46 publications

References 25 publications

Electrochemical Mechanism Investigation of Cu2MoS4 Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Electrochemical Mechanism Investigation of Cu2MoS4 Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Thermal Conductivity of Composite Materials Containing Copper Nanowires

A Facile One Step Solution Route to Synthesize Cuprous Oxide Nanofluid

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Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage

Electrochemical Mechanism Investigation of Cu₂MoS₄ Hollow Nanospheres for Fast and Stable Sodium Ion Storage