Optical properties of NiOOH films in formaldehyde solutions
| العنوان: | Optical properties of NiOOH films in formaldehyde solutions |
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| المؤلفون: | Gennadii Ya Kolbasov, I. A. Rusetskyi, Sergey Fomanyuk, Vitalii O. Smilyk |
| المصدر: | Chemical Papers. 74:581-589 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Molar concentration, Materials science, Aqueous solution, General Chemical Engineering, Kinetics, Analytical chemistry, Formaldehyde, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Biochemistry, Industrial and Manufacturing Engineering, 0104 chemical sciences, chemistry.chemical_compound, Nickel, chemistry, Materials Chemistry, Transmittance, Hydroxide, 0210 nano-technology |
| الوصف: | Films of nickel hydroxide have been obtained by electrodeposition. The analysis of interferograms, optical spectra, XRD analysis and the SEM of the obtained films showed that the deposition of films with ~ 10−5 mol/L PcNi(SO3Na)4 in the Ni(NO3)2 solution helps to control the formation of uniform Ni(OH)2 films with dominance structure of α-Ni(OH)2. The studies of the kinetics of optical changes of NiOOH films in aqueous formaldehyde solutions showed that due to the reaction of NiOOH with formaldehyde, its color changes. It was established that the dependence of the rate of change of light transmittance, ΔT/Δt, on the concentration of formaldehyde is linear in the range of 0.5–20 mmol/L. An analysis of cyclic plots of electrochemical oxidation of Ni(OH)2 to NiOOH and its reduction by the action of formaldehyde showed that the formaldehyde concentration of more than 22 mmol/L can be determined from the absolute value of light transmittance. It was established that an dominance of structure of α-Ni(OH)2 and decrease the thickness of the films to ~ 150 nm contributes by oxidation processes solutions of millimolar concentrations formaldehyde. |
| تدمد: | 1336-9075 2585-7290 |
| DOI: | 10.1007/s11696-019-00900-z |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f88985ea1a8e9559eedee90c9f856b7a https://doi.org/10.1007/s11696-019-00900-z |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........f88985ea1a8e9559eedee90c9f856b7a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13369075 25857290 |
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| DOI: | 10.1007/s11696-019-00900-z |