Narmina O. Balayeva

Regardless of the fact that tungsten trioxide (WO3) is recognized as one of the most promising photocatalysts for potential activity under visible light illumination, it still suffers from intrinsic drawbacks such as photocorrision and an unsuitable band gap structure for the reduction of molecular oxygen. To overcome these limitations we herein re...

Herein, the visible-light-induced dehydrogenation of N-heterocycles such as tetrahydroquinolines, tetrahydroisoquinolines, and indolines in O2-containing suspensions of a commercially available titanium dioxide photocatalyst yielding the corresponding heteroarenes is presented. 4-amino-2,2,6,6-tetramethylpipiridinyloxyl (4-amino-TEMPO) was found to...

We present the chemical synthesis of silver sulfide nanocrystals (NCs) in PVA matrix and the extended characteristics of the obtained nanocomposites with fullerene. The samples were prepared with the different concentration of fullerene and PVA for compression of their fraction relation with the optical and phase properties. UV-vis spectra of Ag2S...

The primary motivation behind efforts to understand the properties of lead sulfide (PbS) is its technological importance as the foundation of modern semiconductor optoelectronics. PbS nanocrystals (NCs) show remarkable versatility and promise for application in both conventional optical devices and the new generation of nano-electronics and nano-op...

Metal-sulfide nanostructures have piqued the interest of researchers for decades due to their intriguing optoelectronic properties. Indeed, significant advances and improvements have been made in various fundamental aspects for cutting-edge applications, such as water splitting and hydrogen production. Furthermore, rising demand for low-dimensional...

Semiconductor materials are the cornerstones of current and future optoelectronic technologies. Recently, new and effective materials have been designed for specific devices based on their unique physical, thermal, mechanical, electrical, magnetic, and optical characteristics. The requirements regarding increasing energy demand, industrialization,...

Rapid progress in integrated processes, including adsorption, photolysis, and photocatalysis, as effective strategies for reducing air pollution, has become more appealing in recent years. The possibility of an integrated process for the decomposition of air pollutants generally starts with the adsorption of the pollutant on the pores of the adsorb...

This study investigates the photocatalytic degradation of nitrogen oxides over graphitic carbon nitride (g-C3N4) based photocatalysts. The synthesis procedure of g-C3N4 consists of two-step: in the first step, the synthesis of g-C3N4 is carried out through a microwave heating method, whereas in the second step the as-synthesized g-C3N4 is annealed....

Solar-driven photoelectrochemical (PEC) water splitting, using semiconductor photoelectrodes, is considered a promising renewable energy source and solution for environmental sustainability. Herein, we report polyvinyl alcohol (PVA) as a binder material for combining MoS2 and TiO2 nanotube arrays (TNAs) to improve PEC water splitting ability. By a...

The consumption of non-renewable resources and the rapid growth of chemical industries are causing serious energy and environmental problems. Highly efficient systems for converting and storing solar energy are therefore required in order to tackle global energy and environmental problems. The use of sunlight and heterogeneous catalysts to drive ch...

A wet chemical-synthesized high surface area ultrafine Ta2O5 nanoparticle and its application to NOx control is reported. The as-synthesized photocatalyst is characterized using powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron paramagnetic resonance (EPR) spectroscopy, X-ray Photoelectro...

A simplified ammonolysis method for synthesizing single phase TaON nanoparticles is presented and the resulting photoelectrochemical properties are compared and contrasted with as-synthesized Ta2O5 and Ta3N5. The protocol for partial nitridation of Ta2O5 (synthesis of TaON) offers a straightforward simplification over existing methods. Moreover, th...

Mixtures and composites of Ag/Ag2O and TiO2 (P25) with varying mass ratios of Ag/Ag2O were prepared, employing two methods. Mechanical mixtures (TM) were obtained by the sonication of a suspension containing TiO2 and Ag/Ag2O. Composites (TC) were prepared by a precipitation method employing TiO2 and AgNO3. Powder X-ray diffraction (XRD) and X-ray p...

The CuS/polymer nanocomposites were synthesized by a facile chemical route under different pH conditions, and the influence of pH on the optical and structural properties was studied by FT-IR, UV-VIS and photoluminescence spectroscopy, thermogravimetric analysis, atomic force microscopy and powder X-ray diffraction techniques.

The CdS and ZnS nanoparticles have been synthesized successfully by the simple chemical method of "layer-by-layer" in the functionalized thermoplastic elastomeric NBR/PE copolymer films. Structural and optical properties have been characterized by FT-IR, XRD, AFM, UV-vis and PL spectroscopy measurements. The XRD results indicate that CdS and ZnS na...

ZnO and ZnO: Al thin films of about 100 nm thicknesses were deposited by magnetron sputtering method at 200-400 °C substrate temperatures under oxygen/argon gas mixture with different O/Ar ratio (0-6 %O2). The higher crystallinities for ZnO: Al and ZnO films are achieved at 400 °C substrate temperature under 0 % and 4 % (O/Ar) mixture ratios, respe...

CdTe, CdS, ZnO and ZnO:Al thin films were prepared by Close-spaced sublimation (CSS), Chemical Bath Deposition (CBD) and Magnetron sputtering methods, respectively. The films were investigated by X- Ray Diffraction (XRD) and Atomic Force Microscopy (AFM) methods. Dependence of electrical properties on crystallinity degree of the obtained films were...

Influence of solution pH on the structural and optical properties of CdS films deposited by conventional spray pyrolysis technique was studied. X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM), Photoluminescence spectroscopy and Spectroscopic Ellipsometry (SE) methods were used for the characterization of the films. The difference in the prop...

PbS and CdS nanoparticles have a direct narrow gap semiconductor. The combination of polymer and the metal sulfide components gives these materials versatility in composition, structure,physical and chemical properties, which makes them very competitive and promising materials for applications in in multiple technical fields including photochemical...

B2VC3VI based binary and ternary materials with Pb, Ge, etc. are widely used as thermoelectric materials in the temperature range from 300 to 500 K. Their outstanding semiconductor properties make them promising materials in microelectronics, thermoelectrics and spintronics .

Cadmium sulfide (CdS) thin films are used as a window layer in cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS) solar cells [1,2]. CdS has a band-gap of 2.42 eV which causes considerable absorption of sunlight in the short wavelength region. Extending transparency of a window material into a region above the energy gap of CdS ma...

ZnO is one of the most interesting semiconducting materials with band gap energy of 3.3 eV. Due to its transparency, optimal electrical and optical properties ZnO films, doped with various impurities can be widely used as a contact electrode in thin film solar cells [1, 2]. In this work the results on the optimization of electrical and optical char...

Recently, synthesis transition-metal chalcogenide nanocrystals on polymer matrix have major significance due to their thermal, mechanical, electrical, catalytical, optical properties for potential applications in nanoelectronic devices, such as light emitting diodes (LED), solar cells, nanoscale lasers, photodetectors, etc. These classes of novel c...

Lead sulfide (PbS) as a unique semiconductor material has been intensively studied in the past decade. PbS nanocrystals are in interest because of the large exciton Bohr radius (18nm) that gives strong quantum confinement of electrons and holes, the well-developed synthetic protocols and properties such as multiple carrier generation. PbS is an imp...

In this research work, we have presented a chemical method to elaborate the PbS, CuS nanocrystals embedded in a polymer composites matrix. We have used polyethylene and nitrile butadiene rubber PE/NBR as a support for synthesis of lead sulfide (PbS) and copper sulfide (CuS) nanocrystals. The size control and morphology of these (PbS and CuS) nanopa...

В работе показано получение функционализированного полимера на основе промышленного бутадиен-нитрильного каучука в результате его модификации реакцией окислительного хлорфосфорилирования. Результаты исследований методами ИК и ЯМР спектроскопии подтверждают, что функционализированный полимер содержит в своем составе фосфоновые -PO(OH)2 группы, колич...