Electrochemical growth of copper nanoparticles: Structural and optical properties

Mandke, Mohanrao V.; Pathan, Habib M.

doi:10.1016/j.jelechem.2012.09.004

Cited by 31 publications

(15 citation statements)

References 38 publications

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“…[74][75][76][77] The pink colour did not disappear when the sample was exposed to air. [79][80][81] Simultaneously, H 2 consumption at the second reduction peak occurs with the release of water. [78] The surprisingly high stability of the plasmon band might be an interesting feature for future applications, for example, in biosensing and catalysis.…”

Section: Redox Behaviormentioning

confidence: 98%

Spectroscopy and Redox Chemistry of Copper in Mordenite

et al. 2014

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Copper-containing zeolites, such as mordenite (MOR), have recently gained increased attention as a consequence of their catalytic potential. While the preferred copper loadings in these catalytic studies are generally high, the literature lacks appropriate spectroscopic and structural information on such Cu-rich zeolite samples. Higher copper loadings increase the complexity of the copper identity and their location in the zeolite host, but they also provide the opportunity to create novel Cu sites, which are perhaps energetically less favorable, but possibly more reactive and more suitable for catalysis. In order to address the different role of each Cu site in catalysis, we here report a combined electron paramagnetic resonance (EPR), UV/Vis-NIR and temperature-programmed reduction (TPR) study on highly copper-loaded MOR. Highly resolved diffuse reflectance (DR) spectra of the CuMOR samples were obtained due to the increased copper loading, allowing the differentiation of two isolated mononuclear Cu(2+) sites and the unambiguous correlation with extensively reported features in the EPR spectrum. Ligand field theory is applied together with earlier suggested theoretical calculations to determine their coordination chemistry and location within the zeolite matrix, and the theoretical analysis further allowed us to define factors governing their redox behavior. In addition to monomeric species, an EPR-silent, possibly dimeric, copper site is present in accordance with its charge transfer absorption feature at 22200 cm(-1), and quantified with TPR. Its full description and true location in MOR is currently being investigated.

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Section: Redox Behaviormentioning

confidence: 98%

Spectroscopy and Redox Chemistry of Copper in Mordenite

et al. 2014

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“…Several methods are available for CuO NP preparation, namely, microwave irradiation [8], and sonochemical [9], electrochemical [10] and chemical reduction [11]. However, chemical synthesis of CuO leads to the adsorption of toxic chemicals on its surface, which may have harmful effects when used in biomedical applications.…”

Section: Moreovermentioning

confidence: 99%

Green synthesis of CuO nanoparticles using <i>Cassia auriculata</i> leaf extract and <i>in vitro</i> evaluation of their biocompatibility with rheumatoid arthritis macrophages (RAW 264.7)

Shi¹,

Tang²,

Zhang³

et al. 2017

Trop. J. Pharm Res

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“…Besides these methods, electrochemical processing is another cost‐effective, efficient method to produce small‐scale copper nanoparticles . Few studies report on synthesizing copper nanoparticles (using copper sulphate as an electrolyte solution) using the electrochemical process …”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of copper succinate and copper oxide nanoparticles by electrochemical treatment: Optimization by Taguchi robust analysis

Das

Srivastava

2016

Can J Chem Eng

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Cylindrical rod‐shaped copper succinate nanoparticles were prepared using the electrochemical method. Taguchi robust design was applied to optimize experimental parameters such as succinic ion concentration (Co), current applied (Iap), and pH (pH). The obtained copper succinate nano‐rods were further thermally treated at different temperatures to produce copper oxide (CuO) nano‐disks. At optimum conditions of Iap = 0.5 A, pH = 7, and Co = 0.25, the maximum productivity of copper nanoparticles before and after calcination at 500 °C was 1.53 g and 1.06 g, respectively. Products were characterized by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and UV‐visible spectrophotometry to determine their various physicochemical characteristics.

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Electrochemical growth of copper nanoparticles: Structural and optical properties

Cited by 31 publications

References 38 publications

Spectroscopy and Redox Chemistry of Copper in Mordenite

Spectroscopy and Redox Chemistry of Copper in Mordenite

Green synthesis of CuO nanoparticles using <i>Cassia auriculata</i> leaf extract and <i>in vitro</i> evaluation of their biocompatibility with rheumatoid arthritis macrophages (RAW 264.7)

Synthesis and characterization of copper succinate and copper oxide nanoparticles by electrochemical treatment: Optimization by Taguchi robust analysis

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