Gas sensing property of novel flower-like nanostructure CuO

Zhu, Zhenjie; Zeng, Wen; Cao, Shengkai; Chen, Lin

doi:10.1007/s10854-015-3588-9

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…The syntheses of CuO nanoparticles and nanostructures have attracted significant attention because of their potential applications as catalysts, − electrodes, − sensors, − and so on. Various synthetic methods and conditions have been examined to obtain CuO with specific sizes and structures for successful applications .…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…Copper oxide (CuO) nanostructures is also one of that category metal oxide. CuO nanostructures are mostly utilized in numerous of applications such as solar cells, humidity sensor, gas sensor, photo catalyst, antimicrobial, organic dye remover, toxic element remover, heavy metal remover from water [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Numerous methods are used to synthesized CuO nanostructures such as chemical bath deposition, vapour deposition, microwave assist synthesis, hydrothermal synthesis, sol-gel, spray pyrolysis, solid state thermal decomposition [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effect of molarity variation on band gap of CuO Nanostructures Synthesized by wet chemical method

Kalita¹,

Karmakar²

2018

IJSRPAS

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The wet chemical method has been implemented to synthesize CuO nanostructures at 100 0 C. The monoclinic phase structure of CuO nanostructures has been affirmed by X-ray Diffraction (XRD) pattern. Crystal size and dislocation density of the nanostructures have been calculated from XRD data. UV-visible absorption spectra have been used to estimate band gap of the prepared CuO nanostructures. The refractive index and dielectric constant of CuO nanostructures have been calculated from band gap which shows an increase with the decrease of the band gap. Field Emission Scanning Electron Microscopy (FESEM) has been used to inspect the crystals' surface morphology.

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“…Nanoparticles differ from bulk materials due to their peculiar electronic, optical and chemical features. Copper oxide (CuO) nanoparticles are extensively utilized in plenty of applications such as gas sensor, photo catalyst, antimicrobial, solar cells, humidity sensor, toxic element remover from water [1][2][3][4][5][6][7][8][9][10][11][12][13]. Numerous methods are used to synthesized CuO nanoparticles such as chemical bath deposition, vapour deposition, microwave assist synthesis, hydrothermal synthesis, sol-gel, spray pyrolysis solid state thermal decomposition [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Structural and Optical Features of CuO Nanoparticles Synthesized at Different Molarities

Kalita¹,

Karmakar²

2018

IJSRPAS

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The sol-gel method has been implemented to synthesize CuO nanoparticles at 100 0 C.The monoclinic phase structure of CuO nanoparticles has been confirmed by X-ray Diffraction (XRD) pattern. Crystal size and dislocation density of the nanoparticles have been estimated from XRD data. Optical band gaps have been calculated from optical absorption spectra. The chemical composition of the nanoparticles has been investigated with using fourier transform infra red (FTIR) spectroscopy. The crystal surfaces of the nanoparticles have been investigated by scanning electron microscopy (SEM).

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Gas sensing property of novel flower-like nanostructure CuO

Cited by 6 publications

References 24 publications

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

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

Effect of molarity variation on band gap of CuO Nanostructures Synthesized by wet chemical method

Analysis of Structural and Optical Features of CuO Nanoparticles Synthesized at Different Molarities

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