Nanostructured copper oxide semiconductors: a perspective on materials, synthesis methods and applications

Zoolfakar, Ahmad Sabirin; Rani, Rozina Abdul; Morfa, Anthony J.; O’Mullane, Anthony P.; Kalantar‐zadeh, Kourosh

doi:10.1039/c4tc00345d

Cited by 355 publications

(203 citation statements)

References 327 publications

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“…The commonly used methods include long-chained alcohol reduction, electro-deposition, solÀgel, solution phase and also chemical reduction. [9,10] Some synthesis methods were more or less having some shortcomings. For example, large quantities of organic matter being used in the long-chained alcohol reduction method are harmful to the environment and difficult to handle, and also the method needs the condition of high temperature.…”

Section: Introductionmentioning

confidence: 99%

Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

2015

Journal of Experimental Nanoscience

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In this work, Cu 2 O nanoparticles of a particular shape were prepared by an ecofriendly, gentle and low-cost synthetic method using lignin as a reducing and capping reagent. Structure and morphology of the Cu 2 O nanoparticles were characterised by high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction (XRD) and Fourier-transform (FT-IR) spectroscopy. The results established that Cu 2 O nanoparticles coated by lignin showed a particular shape. The morphology of Cu 2 O nanoparticles presented as some loose accumulation of particles just like broccoli, and the particle size range was between 100 and 200 nm. And, the XRD revealed the structure of crystalline of the Cu 2 O nanoparticles. In addition, the sterilisation of Cu 2 O nanoparticles on Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) was also investigated. The Cu 2 O nanoparticles showed effective bactericidal activity against E. coli and S. aureus. The antibacterial rate could get 100% after 30 min with 4.0 g/L Cu 2 O nanoparticles. Furthermore, the Cu 2 O nanoparticles were confirmed to have low cytotoxicity.

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Section: Introductionmentioning

confidence: 99%

Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

2015

Journal of Experimental Nanoscience

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“…However, the control electrode, that is, ITO/MWCNT, showed no variation in the current signal, indicating that Figure 6B) exhibited the highest current density of 4.19 mA cm -2 (after background current correction) at +0.9 V. Although no oxidation peak was detected in the plots, the current showed a sharp increase at potentials corresponding to the onset oxidation potential for glucose oxidation, which has been reported elsewhere. 10,41 The onset oxidation potential for ITO/MWCNT/Cu-CuO A , ITO/MWCNT/Cu-CuO B , and ITO/MWCNT/Cu-CuO C was observed at +0.36 V, +0.34 V, and +0.15 V, respectively. The electrooxidation of glucose over copper-based material has been widely reviewed in the recent literature, and the formation of the redox couple Cu (II)-Cu (III) in an alkaline medium has been considered to play a significant role in the oxidation process.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…9 These nanostructures have a low band gap (1.2-1.6 eV) with high catalytic activity and reasonable stability. 10 Various methodologies have been employed to synthesize copper oxide-based nanostructures with…”

Section: Introductionmentioning

confidence: 99%

“…Recently, CuO nanostructures have been investigated for biosensing applications because of their enhanced catalytic effect and resistance to surface poisoning. 28 CuO nanoparticles, 29 nanoplatelets, 30 nanowires, 27 nanoflowers, and nanorods 10 have been applied for glucose detection with good sensitivity. Most of the synthetic protocols for the formation of these attractive nanostructures are tedious and expensive.…”

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confidence: 99%

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Spherulitic copper–copper oxide nanostructure-based highly sensitive nonenzymatic glucose sensor

Das

Tran

Yoon

2015

IJN

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In this work, three different spherulitic nanostructures Cu–CuO A , Cu–CuO B , and Cu–CuO C were synthesized in water-in-oil microemulsions by varying the surfactant concentration (30 mM, 40 mM, and 50 mM, respectively). The structural and morphological characteristics of the Cu–CuO nanostructures were investigated by ultraviolet–visible (UV–vis) spectroscopy, X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy techniques. The synthesized nanostructures were deposited on multiwalled carbon nanotube (MWCNT)-modified indium tin oxide (ITO) electrodes to fabricate a nonenzymatic highly sensitive amperometric glucose sensor. The performance of the ITO/MWCNT/Cu–CuO electrodes in the glucose assay was examined by cyclic voltammetry and chronoamperometric studies. The sensitivity of the sensor varied with the spherulite type; Cu–CuO A , Cu–CuO B , and Cu–CuO C exhibited a sensitivity of 1,229, 3,012, and 3,642 µA mM −1 ·cm −2 , respectively. Moreover, the linear range is dependent on the structure types: 0.023–0.29 mM, 0.07–0.8 mM, and 0.023–0.34 mM for Cu–CuO A , Cu–CuO B , and Cu–CuO C , respectively. An excellent response time of 3 seconds and a low detection limit of 2 µM were observed for Cu–CuO B at an applied potential of +0.34 V. In addition, this electrode was found to be resistant to interference by common interfering agents such as urea, cystamine, L-ascorbic acid, and creatinine. The high performance of the Cu–CuO spherulites with nanowire-to-nanorod outgrowths was primarily due to the high surface area and stability, and good three-dimensional structure. Furthermore, the ITO/MWCNT/Cu–CuO B electrode applied to real urine and serum sample showed satisfactory performance.

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“…Metal oxide nanoparticles straddle the boundary between bulk materials and molecules and are a major driving force behind cutting-edge technological development [1][2][3][4][5]. Metal oxide nanoparticles have seen successful and widespread use in applications as diverse as: energy materials [6][7][8][9], thermochromics [10][11][12], magnetism [13][14][15], medicine [16][17][18][19][20], imaging [21][22][23], communications technology and data storage [24][25][26], catalysts for organic transformations [27] and superhydrophobic surfaces [15,28,29].…”

Section: Introductionmentioning

confidence: 99%

Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism

et al. 2015

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Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 lattice, leading to the formation of Ce 3+ and Ce 4+ species and hence doped ceria shows a high propensity for numerous catalytic processes. Magnetic ceria are important in several applications from magnetic data storage devices to magnetically recoverable catalysts. We investigate the effect doping nickel into a CeO2 lattice has on the room temperature ferromagnetism in monodisperse cerium dioxide nanoparticles synthesised by the thermal decomposition of cerium(III) and nickel(II) oleate metal organic precursors before and after annealing. The composition of nanoparticles pre-and post-anneal were analysed using: TEM (transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), EDS (energy-dispersive X-ray spectroscopy) and XRD (X-ray diffraction). Optical and magnetic properties were also studied using UV/Visible spectroscopy and SQUID (superconducting interference device) magnetometry respectively.

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Nanostructured copper oxide semiconductors: a perspective on materials, synthesis methods and applications

Abstract: The oxides of copper (CuxO) are fascinating materials due to their remarkable optical, electrical, thermal and magnetic properties.

Cited by 355 publications

References 327 publications

Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Spherulitic copper–copper oxide nanostructure-based highly sensitive nonenzymatic glucose sensor

Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism

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Nanostructured copper oxide semiconductors: a perspective on materials, synthesis methods and applications

Abstract: The oxides of copper (CuxO) are fascinating materials due to their remarkable optical, electrical, thermal and magnetic properties.

Cited by 355 publications

References 327 publications

Green and gentle synthesis of Cu2O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Green and gentle synthesis of Cu2O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Spherulitic copper&ndash;copper oxide nanostructure-based highly sensitive nonenzymatic glucose sensor

Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism

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Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Green and gentle synthesis of Cu₂O nanoparticles using lignin as reducing and capping reagent with antibacterial properties

Spherulitic copper–copper oxide nanostructure-based highly sensitive nonenzymatic glucose sensor