3D rod-like copper oxide with nanowire hierarchical structure: Ultrasound assisted synthesis from Cu2(OH)3NO3 precursor, optical properties and formation mechanism

Ba, Ningning; Zhu, Lianjie; Li, Hongbin; Zhang, Guangzhi; Li, Jianfa; Sun, Jianyong

doi:10.1016/j.solidstatesciences.2016.01.004

Cited by 20 publications

(7 citation statements)

References 39 publications

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“…2014; Ba et al . 2016), arsenic removal (Zhong et al . 2007), photocatalytic properties (Song et al .…”

Section: Introductionmentioning

confidence: 99%

“…During this study, formation of hierarchical copper oxide nanostructures growing in situ in the culture medium was observed. Hierarchical metal oxide microstructures and nanostructures are novel materials, having an extensive range of industrial application, such as photonic crystals (Passoni et al 2014), chemical and electrochemical sensing (Wang et al 2014;Ba et al 2016), arsenic removal (Zhong et al 2007), photocatalytic properties (Song et al 2014), liquid transport properties control (Pham et al 2018), among others.…”

Section: Introductionmentioning

confidence: 99%

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Dual antifungal activity againstCandida albicansof copper metallic nanostructures and hierarchical copper oxide marigold‐like nanostructures grown in situ in the culture medium

et al. 2020

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Aims This study aimed to determine in vitro activity of copper nanoparticles and copper nanowires against Candida albicans strains and to assess their effects on morphology and submicron structure. Methods and Results The microdilution method determined the minimal inhibitory concentration (MIC) of copper nanoparticles (CuNPs) and copper nanowires (CuNWs) against three strains of C. albicans: ATCC 10231 and two clinical strains (C and E). Effects on the morphology and ultrastructure of C. albicans strains were examined by scanning electron microscopy and transmission electron microscopy. MIC for CuNPs was 129·7 µg ml−1 for strain ATCC 10231, 1037·5 µg ml−1 for strain C and 518·8 µg ml−1for strain E. MIC for CuNWs was similar for all strains tested (260·3 µg ml−1). SEM and TEM studies showed alterations in morphology, cell wall and the complete collapse of the yeast after incubation with CuNPs. In contrast, most of the yeast cells maintained their structure with an intact cell wall, and only decreased the number and size of fimbriae when C. albicans was exposed to CuNWs. CuNPs and CuNWs formed hierarchical copper oxide nanostructures growing in situ in the culture medium. Results suggest a dual mechanism for antifungal activity: (i) free Cu2+ ions act as a biocide, (ii) sharp edges of marigold‐like petal nanostructures could injure the cellular wall and membrane and cause the death of the yeast. Conclusions CuNPs and CuNWs inhibited the growth of the three strains of C. albicans tested. Moreover, CuNPs disrupted cell wall with leakage of the cytoplasmic content. Each concentration of the series used for the determination of the activity of CuNPs and nanowires against C. albicans formed copper oxide marigold‐like nanostructures. Significance and Impact of the Study This study suggests that CuNPs and CuNWs are good candidates for formulating new therapeutic agents for candidiasis.

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“…2014; Ba et al . 2016), arsenic removal (Zhong et al . 2007), photocatalytic properties (Song et al .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual antifungal activity againstCandida albicansof copper metallic nanostructures and hierarchical copper oxide marigold‐like nanostructures grown in situ in the culture medium

et al. 2020

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“…Furthermore, the thermal decomposition of copper(II) compounds in solid state is an important processing step in many newly proposed synthetic methods via the controlled synthesis of precursors using various methods. [41][42][43]45,47,50,51,56 Therefore, the precise control of the thermal decomposition processes of copper(II) compounds should be achieved for the successful synthesis of CuO nanoparticles and nanostructures.…”

Section: Introductionmentioning

confidence: 99%

“…Various synthetic methods and conditions have been examined to obtain CuO with specific sizes and structures for successful applications . These synthetic methods involve wet chemical precipitation methods, − thermal decomposition of copper(II) compounds, − thermal oxidation of copper in a solid–gas system, − hydrothermal methods, − electrochemical methods, , and sonochemical methods. , Various CuO nanoparticles and nanostructures have been synthesized, for example, nanoparticles having different sizes ,,, and microstructures with rod, ,,, needle/fiber, ,,,, wire, ,,, ribbon, , film/sheet/plate, ,,, spherical, , cage, dendrite-like, flower-like, ,,,− and urchin-like shapes. Although the CuO synthetic route in solid–gas systems involving the thermal decomposition of copper(II) compounds and the thermal oxidation of Cu is classical, the reaction processes are fundamentally important when a large scale and cost effective synthesis of CuO with desired properties is considered.…”

Section: Introductionmentioning

confidence: 99%

“…Although the CuO synthetic route in solid–gas systems involving the thermal decomposition of copper(II) compounds and the thermal oxidation of Cu is classical, the reaction processes are fundamentally important when a large scale and cost effective synthesis of CuO with desired properties is considered. Furthermore, the thermal decomposition of copper(II) compounds in solid state is an important processing step in many newly proposed synthetic methods via the controlled synthesis of precursors using various methods. − ,,,,, Therefore, the precise control of the thermal decomposition processes of copper(II) compounds should be achieved for the successful synthesis of CuO nanoparticles and nanostructures.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics and Mechanisms of the Thermal Decomposition of Copper(II) Hydroxide: A Consecutive Process Comprising Induction Period, Surface Reaction, and Phase Boundary-Controlled Reaction

Fukuda

Koga

2018

J. Phys. Chem. C

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This study focused on the kinetics and mechanisms of the thermal decomposition of Cu(OH)2 as a potential processing route to produce CuO nanoparticles. The physico-geometric reaction behaviors were studied using available physicochemical techniques and microscopic observation. The kinetic modeling of the reaction process to produce CuO nanoparticles was examined via the kinetic analysis of the mass-loss data recorded under different heating conditions. The reaction exhibited specific physico-geometric kinetic characteristics, including an evident induction period, a subsequent sigmoidal mass-loss behavior under isothermal conditions, and a long-lasting reaction tail under linearly increasing temperature conditions. During the first mass-loss step characterized by the sigmoidal mass-loss behavior, the crystallite size of the produced CuO was constant, and the specific surface area increased systematically. The second mass-loss step during the reaction tail was accompanied by the crystal growth of CuO. Therefore, the end of the first mass-loss step was the most efficient reaction stage to obtain CuO nanoparticles. The overall kinetic process that reaches this reaction stage was successfully demonstrated as consecutive physico-geometric processes comprising the induction period, surface reaction, and one-dimensional phase boundary-controlled reaction, providing the kinetic parameters for each component step.

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Synthesis of CuO from CuCO3·Cu(OH)2 and its catalytic activity in the degradation of methylene blue

Xue¹,

Qv²,

Qian³

et al. 2016

Res Chem Intermed

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3D rod-like copper oxide with nanowire hierarchical structure: Ultrasound assisted synthesis from Cu2(OH)3NO3 precursor, optical properties and formation mechanism

Cited by 20 publications

References 39 publications

Dual antifungal activity againstCandida albicansof copper metallic nanostructures and hierarchical copper oxide marigold‐like nanostructures grown in situ in the culture medium

Dual antifungal activity againstCandida albicansof copper metallic nanostructures and hierarchical copper oxide marigold‐like nanostructures grown in situ in the culture medium

Kinetics and Mechanisms of the Thermal Decomposition of Copper(II) Hydroxide: A Consecutive Process Comprising Induction Period, Surface Reaction, and Phase Boundary-Controlled Reaction

Synthesis of CuO from CuCO3·Cu(OH)2 and its catalytic activity in the degradation of methylene blue

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