Taymaz Tabari's research while affiliated with Jagiellonian University and other places

Publications (25)

Article
Nanorod-TiO2 electrodes were obtained by a hydrothermal method in the presence of different concentrations of sodium chloride. The addition of NaCl during the synthesis promoted the formation of thinner, well-crystallized nanorods growing along the [001] crystallographic direction, while still, the most intense reflection is related to (101). The o...
Chapter
Thermodynamics and kinetics of primary photophysical and photochemical processes govern the overall photoactivity of photocatalytic and photoelectrocatalytic systems. A proper determination of redox potentials, Fermi levels, quasi-Fermi levels, distribution of electronic states and surface traps, as well as lifetimes of photogenerated charge carrie...
Article
A visible light responsive heterojunction system composed of Fe2O3 nanorods (NF), reduced graphene oxide (rGO) and double oxide perovskites (LaSrFe2–nConO6, n = 1 (LSFC) and 0 (LSFF)) was rationally designed for an effective photoelectrochemical water splitting. The photoelectrodes were characterized in terms of structure, surface, physicochemical...
Conference Paper
Full-text available
In the energy storage context, metal ion batteries such as Li, Na, and K are governing the market. However, their activity significantly relied on anode materials. Mostly, the charging of these batteries occurs by produced electricity from environmentally hazardous processes [1]. In a totally different approach, light can be utilized to accelerate...
Article
BiFeO3 (BF) and LaFeO3 (LF) perovskites were synthesized using a microwave-assisted (MW) and sol-gel (SG) methods. XRD, XPS, TEM, UV-DRS techniques were applied to study physicochemical properties of perovskites. In addition, Incident Photon-to-Current Efficiency (IPCE) measurements, Linear Sweep Voltammetry (LSV) and impedance spectroscopy were us...
Article
We explore the effects of Co-doping on the electronic properties of lead titanate via DFT calculations and experimental studies. Powder diffractometry data are consistent with Co-ions replacing Pb-ions within the perovskite framework. DFT shows a reduced oxygen binding energy and decreased band gap as a result of doping within the PbTiO$_3$ lattice...
Article
The effect of calcium incorporation on the physicochemical and electrochemical properties of the LaMnO3 (LM) perovskites was studied via several techniques. Moreover, a new microwave assisted method was used to synthesize La1-xCaxMnO3 (LCM) perovskites with various calcium content (x = 0.2 and 0.4). Then, the physicochemical properties of the mater...
Article
Microwave-assisted synthesis as a straightforward, efficient and time-saving approach is used for the synthesis of LaFeO 3 nanoparticles. The obtained perovskite showed a narrow band gap energy (2.12 eV), high crystallinity, great oxygen adsorption/ desorption ability and mesoporous structure. In order to assess the photocatalytic activity, benzene...
Article
A mesoporous ZnFe2O4 nanoparticles prepared as a visible light responsive catalyst, the morphology, structure and optical property of the spinel oxide are characterised, diligently. Photocatalytic activity of ZnFe2O4 nanoparticles assessed toward the oxidation of gaseous benzene. A comparative study conducted, between ZnFe2O4 and Fe2O3, in terms of...
Article
The visible light response and photocatalytic activity of covalently bonded iron(III) Schiff-base complex were evaluated by UV-DRS and photooxidation of nitric oxide under visible light exposure, respectively. In addition, this study reports the existing of dominant active sites on the surface of grafted complex toward water adsorption, which leads...
Article
The influence of relative humidity on NO oxidation over commercial TiO2 (47 m2/g catalyst) was investigated. The experimental methodology followed the protocols described in ISO-22197: 2007 (E) standard. The adsorption characteristics of oxygen and H2O were monitored by adsorption calorimetry. Oxygen adsorption was low; on the contrary water vapor...
Article
Full-text available
La0.5Ca0.5CoO3 perovskite-type oxide is prepared by sol–gel method. The physical and chemical properties of La0.5Ca0.5CoO3 were characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), transmission electron microscopy (TEM), SEM, EDX, Bru- nauer, Emmett and Teller (BET) and IR techniques. The photocatalytic activity of the sam...
Article
Bis[S-allyl-β-N-(benzylidene)dithiocarbazato]copper(II) complex was grafted into SiO2 matrix. Heterogenized catalyst was characterized by FT-IR, SEM, EDX TEM, N2 absorption and atomic absorption spectroscopy (AAS) and its catalytic performance in the oxidation of alcohols was investigated. The experimental results showed that the prepared heterogen...
Article
The organic–inorganic hybrid of citric acid, tetraethoxysilane (TEOS), and triethylphosphate (TEP) doped by a nickel Schiff-base complex was prepared by sol–gel method. The prepared composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmittance electron microscopy (TEM), scanning tunnelling microscopy (S...
Article
LaFe0.9Co0.1O3 (LFCO) perovskite nanoparticles were prepared using a sol-gel method. The physical and chemical properties of the catalyst were determined using X-ray diffraction (XRD), transmission electron microscopy, scanning electron microscopy, scanning tunneling microscopy, energy dispersive X-ray spectroscopy, thermogravimetric analysis, and...
Article
Recent studies have shown that the use of biomaterials and new biodegradable scaffolds for repair or regeneration of damaged tissues is of vital importance. Scaffolds used in tissue engineering should be biodegradable materials with three-dimensional structures which guide the growth and differentiation of the cells. They also tune physical, chemic...
Article
Full-text available
A heterogeneous catalyst was prepared by direct physical encapsulation of nickel Schiff-base complex into the silicon dioxide matrix via sol-gel method. The compounds were characterized by FT-IR, SEM, TEM, XRD, CHNS and AAS. The catalytic performance in the alcohols and thiols oxidation was investigated in the presence of H2O2 (10 mmol, 30%) as oxi...
Article
Full-text available
BaPbO3 perovskite was prepared by the sol-gel method. The physical and chemical properties of catalyst were character-ized by XRD, TEM, SEM, EDX and IR techniques. The photocatalytic activity of the sample was evaluated by photocatalytic decomposition of methylene blue (MB) dye under UV irradiation. The results of XRD indicate that the perovskite-t...
Article
Full-text available
A new encapsulated material [NiL 2 -SiO 2 ] was prepared by direct sol-gel method. The material was characterized by fourier-transform (FTIR), proton nuclear magnetic resonance (1 H NMR), ultraviolet-visible (UV-Vis), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) methods. The characterization results reveal that Ni-c...

Citations

... The high consumption of fossil fuels will lead to a serious global energy crisis in the future [1][2][3][4][5]. It is estimated that our demand for these non-renewable sources will rise to 56% by 2040 [6][7][8]. ...
... The bandgap engineering via introducing defects in the system along with the generation of new states whether occupied or empty within the valence band (VB) and conduction band (CB) is an efficient route to extend the light absorption range of the photocatalyst. At the same time, heterojunction design has been used to increase the cross-section of the light absorption, which can be divided into three categories: type I, type II, and type III [21][22][23]. Among all mentioned ways of engineering the bandgap, surface modification employing organic molecules (dyes) is straightforward and efficient. ...
... 55 Fig. 7b indicates that the heterojunction FeO 2.0 /Ti reaches H 2related efficiencies (STH = 3.2%) about 3 times higher than TiNTA (STH = 1.2%). The presence of the rGO further improves STH of FeO 2.0 rGO/Ti up to 5.9%, which is higher than that on αFe 2 O 3 @rGO nanorod (3.94%) [55]. It was expected that the efficiency of H 2 evolved on Pt/G cathode should depend not on the anode type, while the reactivity of photoanode was determining in the magnitude of J ph and thus the quantity of the produced gas. ...
... Microwave-prepared BiFeO 3 and LaFeO 3 were examined for their photoelectrochemical properties. LaFeO 3 showed stronger water splitting than BiFeO 3 because of the Jahn-Teller distortion, which leads to charge separation [64]. Kim and his coworkers investigated the Fe doping in Co-based Perovskite oxide and explored its catalytic activity towards oxygen evolution reaction in alkaline media. ...
... Solar energy harvesting and utilization have paramount importance in the sustainable development and replacement of fossil fuels [1][2][3][4]. More importantly, the cost-effective and environmentally benign methods are well-appreciated to be employed in solar energy harvesting [5][6][7]. ...
... In recent years large number of experimental results have been published on the LCMO system. Tabari et al. [25] studied the structural and capacitance properties of this system. They report the negative effect on the capacitance with the substitution of Ca. ...
... First, the ability of catalysts to utilize photons effectively is limited, if the photon consumption rate hits saturation, more photons cannot be utilized. While the ethylene concentration is decreased and the catalytic process is inhibited, a substantial quantity of CO 2 , H 2 O, and other rapidly produced chemicals will be adsorbing at the active site of the ABT/starch composite film [41]. Fig. 8e and f shows, for four cycles, the photocatalytic impact of ethylene degradation and the first-order fitting kinetics of the ABT/ starch nanocomposite film, respectively. ...
... Among them, spinel Zn ferrite (ZnFe 2 O 4 ) stands out due to the enhanced photochemical stability [21]. Visible-light photocatalytic performance has been reported in the degradation of different organic pollutants, as dyes [22], benzene [23], or phenol [24]. However, the main limitation regarding magnetic separation and photocatalyst reuse is its reduced magnetic moment (low saturation magnetization) in comparison with other spinel ferrites. ...
... Among all mentioned ways of engineering the bandgap, surface modification employing organic molecules (dyes) is straightforward and efficient. The light harvesting efficiency of these organic-inorganic hybrid materials is due to the direct (Scheme 1a) or indirect (Scheme 1b) injection of electrons from an organic molecule to the CB of TiO 2 , which also can increase the charge separation via diminishing the charge recombination [24][25][26][27]. Among the organic molecules, catechol and salicylic acid were used for surface-modification of the TiO 2 . ...
... Solar energy harvesting and utilization have paramount importance in the sustainable development and replacement of fossil fuels [1][2][3][4]. More importantly, the cost-effective and environmentally benign methods are well-appreciated to be employed in solar energy harvesting [5][6][7]. ...