Fabrication of cupric oxide-based transistors by a sol–gel technique using a binary solvent mixture

Vincze, Tomas; Micjan, Michal; Pavúk, Milan; Weis, Martin

doi:10.1007/s10854-022-07921-7

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…In addition, the samples Cu 1.7 Ca 0.3 O and Cu 1.4 Ca 0.6 O had additional peaks observed at 2θ = 35.6 • , 46.6 • , and 48.8 • , corresponding to (110), (202), and (018) crystallographic planes of CaCO 3 , respectively [33]. Only one additional peak was detected in a sample containing a higher Ca concentration at 2θ = 23.9 • , which corresponded to (012) and was assigned to crystallographic planes of rhombohedral calcite, CaCO 3 [30]. From these outcomes, it can be inferred that the CaCO 3 nanoparticles coated the surface of Cu 2 O and were supported on a GO nanosheet.…”

Section: Resultsmentioning

confidence: 96%

“…This method is highly versatile and can be used to prepare a wide range of nanomaterials, including metal oxides, ceramics, and composites. The gel's drying conditions may be controlled to provide nanosized porosity and a large surface area [30]. Industrial catalysts of all kinds are inserted into the pores of nanoporous materials, and as a result of these materials' extremely highly active surface areas, the catalytic efficiency of these materials rises, and the price of the end product reduces [31].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

et al. 2023

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The synthesis of CaCO3/Cu2O/GO nanocomposites was developed by sol-gel auto-combustion method. The analysis of structure was completed on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and environmental scanning electron microscopy (ESEM). The XRD spectra of the nanocomposites matched the crystal structure of CaCO3/Cu2O. The average crystal size was 20 nm for Cu2O and 25 nm for CaCO3 nanoparticles. FTIR data showed the absorption bands of Cu2O and GO. Raman spectroscopy data confirmed the formation of GO sheets. ESEM micrographs displayed spherical nanoparticles dispersed in GO sheets. X-ray photoelectron spectroscopy showed the peaks of Cu 2p, O 1s, C 1s, Cu 3s, and Ca 2p. The spectra of optical absorption revealed an absorption band of around 450 nm. The calcium content increase led to a decrease in the optical energy gap from 2.14 to 1.5 eV. The production of hydrogen from NaBH4 across the methanolysis reaction was accelerated by the CaCO3/Cu2O/GO nanocomposites. Therefore, these nanocomposites are superior in catalytic hydrogen production systems.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

et al. 2023

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“…L-glutamic acid-based organogelator was developed by the addition of amides to Boc-L-glutamic acid with octadecylamine [ 8 ]. In the sol-gel copper (II) acetate hydrate [Cu(COOCH 3 ) 2 .xH 2 O, 98%] with monoethanolamine (MEA), a stabilizer was prepared, and the precursor was dissolved in a mixture of isopropyl alcohol and 2-methoxy ethanol in several ratios [ 33 ]. The binary solvent gel is observed by combining cyclodextrins with drugs such as doxycycline, and pyrene was characterized as a drug delivery carrier [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Solvent selective gelation of cetyltrimethylammonium bromide: structure, phase evolution and thermal characteristics

Nagarjuna,

Ramakanth

2024

R. Soc. Open Sci.

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We report herein the gelation behaviour of cetyltrimethylammonium bromide (CTAB), a cationic surfactant, in a variety of solvent compositions. A turbid gel of CTAB in a binary solvent mixture at a critical composition was observed to be 1 : 3 v/v toluene : water. The molecular structure of the as-formed gel was investigated by X-ray diffraction and microscopic techniques, namely, optical and polarizing microscopy, scanning electron microscopy and small-angle X-ray scattering (SAXS). The phase evolution has been studied using UV–visible transmittance measurements and the thermal characteristics of the gel by differential scanning calorimetry measurements. SAXS studies, in conjunction with molecular modelling, revealed the gel to assemble as lamellae with high interdigitation of bilayer assembly of CTAB molecules with predominant non-covalent interactions, where the gel lamellae were inferred from the interplanar spacings. Rheological studies revealed the viscoelastic nature of the CTAB gels. The ability to form a gel has been evaluated in several polar solvents, such as methanol and chloroform, and non-polar solvents, such as toluene and carbon tetrachloride.

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Charge transfer in copper oxide thin films deposited at different electrodeposition potential

Ali

Hussain

Waqas

et al. 2023

Physica B: Condensed Matter

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Fabrication of cupric oxide-based transistors by a sol–gel technique using a binary solvent mixture

Cited by 6 publications

References 20 publications

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Solvent selective gelation of cetyltrimethylammonium bromide: structure, phase evolution and thermal characteristics

Charge transfer in copper oxide thin films deposited at different electrodeposition potential

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