Response speed of SnO2-based H2S gas sensors with CuO nanoparticles

Chowdhuri, Arijit; Gupta, Vinay; Sreenivas, K.; Kumar, Rajiv; Mozumdar, Subho; Patanjali, P. K.

doi:10.1063/1.1646760

Cited by 313 publications

(171 citation statements)

References 7 publications

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“…Furthermore, Zn acts as enzymes cofactor and is involved in protein binding, transcriptional and translational regulation, enzyme activity, and signal transduction (Zhang et al, 2005). However, despite its nutritional values, Zn, like other metals, can be toxic depending on its concentration, exposure time, and plant genotype (Chowdhuri et al, 2004). In the in vitro condition, the explant directly contacts the medium containing Zn due to lack of root system; therefore, they may act the same as heavy metal sensitive plants which cannot keep metals out of their roots (Chang et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Improving date palm (phoenix dactylifera l. cv. estamaran) calogenesis by the use of zinc oxide nanoparticles

Amiri¹,

Mousavi²,

Torahi³

2016

JEBAS

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To study the effects of zinc nanoparticles on date palm cv. Estamaran (Sayer) callus induction under in vitro condition, a research with two separate experiments was conducted using a completely randomized design. In the first experiment, MS basal salt medium containing 100 mg/l 2,4-D, 3 mg/l 2ip, 3 g/l activated charcoal, 30 g/l sucrose, 40 mg/l adenine sulfate, and 1 mg/l biotin along with different concentrations of zinc sulfate (ZnSO4), including 0, 2.43, 4.86 mg/l or zinc oxide nanoparticles (ZnO NPs), including 0, 2.43, 4.86, 7.29 mg/l , were used. While in the second experiment, the effect of various medium strengths including full strength MS, ½ MS, and ¼ MS was examined on callus formation. At the end of each experiment, total explants induced callus, embryogenic callus formation percentage, and callus fresh and dry weight were evaluated. Results of the first experiment showed that the best callus induction and callus fresh and dry weight belong to MS medium containing 2.43 mg/l ZnO NPs. Further, higher ZnO NPs concentrations had negative effects on callus formation. However, results of the second experiment indicated that highest callus formation and callus fresh and dry weight are obtained on full strength MS basal salt medium.

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Section: Discussionmentioning

confidence: 99%

Improving date palm (phoenix dactylifera l. cv. estamaran) calogenesis by the use of zinc oxide nanoparticles

Amiri¹,

Mousavi²,

Torahi³

2016

JEBAS

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“…It couples a narrow band gap (Eg = 1.2 eV -1.8 eV) [10][11][12] with a set of properties such as high-temperature superconductivity and good photoconductivity and photochemical properties [13]. This largely explains the growth of applications in the last years in the more diverse fields such as solar cells [14], gas sensors [15], field emission (FE) emitters [16], and lithium ion battery electrode materials [17].…”

Section: Introductionmentioning

confidence: 99%

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

Dodoo‐Arhin

Leoni

Scardi

2012

Molecular Crystals and Liquid Crystals

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Copper oxide (CuO) nanorod-like structures made of spherical nanocrystals were synthesized at moderate temperature (80°C) starting from CuCl 2 •2H 2 O crystals in a water/n-heptane microemulsion stabilised by the nonionic Brij-30 surfactant. Whole Powder Pattern Modelling of the X-ray diffraction pattern shows absence of linear and planar defects with crystalline domains in the range of 4 -8 nm. A linear correlation between the average size of the particles and the quantity of water in the system was observed: all synthesised specimens show a large blue shift of the energy bandgap (up to 2.7 eV versus 1.2 eV of bulk CuO) resulting from quantum confinement effects. The mechanism of growth of the spherical nanoparticles into nanorod-like structures has been elucidated.

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“…Other known applications of CuO are in catalysts [23,24], field emission devices [25], gas sensors [26][27][28][29], photovoltaic device [30][31][32][33][34][35], superconductors [36][37][38]. Several techniques have been used to synthesis CuO.…”

Section: Introductionmentioning

confidence: 99%

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Mammah¹,

Opara²,

Omubo-Pepple³

et al. 2013

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Thin films of CuO having an average thickness of 720 nm were deposited on clean glass substrates using the Aqueous Chemical Growth (ACG) method with Cu(NO 3 ) 2 and C 6 H 12 N 4 as precursors and annealed at different temperatures in order to determine the effect of annealing temperature on their optical and solid state properties. The study was carried out using Rutherford Backscattering (RBS) spectroscopy for t thickness and chemical composition, X-Ray Diffraction (XRD) for crystallographic structure and a UV-VIS spectrophotometer for spectral analysis. The results indicate that the absorbance and absorption/extinction coefficient of the films vary inversely with annealing temperature while the transmittance, reflectance, direct band gap, real/imaginary dielectric constants and refractive index vary directly with annealing temperature. The results further indicate an improvement in crystallinity as annealing temperature increases. The as-deposited and annealed ACG CuO thin films were found to be suitable for use as window layer in solar cells among other electronic and optoelectronic applications.

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Response speed of SnO2-based H2S gas sensors with CuO nanoparticles

Cited by 313 publications

References 7 publications

Improving date palm (phoenix dactylifera l. cv. estamaran) calogenesis by the use of zinc oxide nanoparticles

Improving date palm (phoenix dactylifera l. cv. estamaran) calogenesis by the use of zinc oxide nanoparticles

Microemulsion Synthesis of Copper Oxide Nanorod-Like Structures

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

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