F. Buazar

F. Buazar
KMSU · Chemistry

PhD

About

34
Publications
18,326
Reads
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897
Citations
Citations since 2016
11 Research Items
745 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Introduction
Foad Buazar currently works at the Chemistry Dept. KMSU. Foad does research in Green Chemistry, Nanotechnology, and Theoretical Chemistry. His main current research interests focus on “Developing Novel Green Approaches for Nanomaterial’s Synthesis from both marine and plants resources. His most recent publication In SCIENTIFIC REPORTS journal Entitled: 'Phycosynthesis and Enhanced Photocatalytic Activity of Zinc Oxide Nanoparticles Toward Organosulfur Pollutants'. Enjoy its reading!
Additional affiliations
October 2009 - present
iran
Position
  • Lecturer
December 2008 - September 2009
Technical University of Denmark
Position
  • Researcher
September 2005 - October 2009
Tarbiat Modares University
Position
  • Research Assistant
Description
  • Nanoparticle synthesis

Publications

Publications (34)
Article
Full-text available
Ab initio and DFT molecular orbital calculations are used to determine singlet–triplet energy splits, ΔEs–t,X, as well as relative energies, in the carbenic reactive intermediates X–C2N, at seven levels of theory: B3LYP/6-31G*, MP2/6-31G*, B3LYP/6-311++G**, MP2/6-311+G*, MP3/6-311G*, MP4(SDTQ)/6-311++G** and QCISD(T)/6-311++G**; for X=H, NH2, CN an...
Article
Brass rods (3 mm × 30 mm) are directly converted into brass nanoparticles through a modified arc method, at 100 A, and in five different media. The X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) data show strong dependence of nanoparticle sizes and their compositions on the media employed...
Article
Six ground state triplet germylenes, with HGeX and GeX2 formulae, are reached at QCISD(T)/6-311++G** and B3LYP/6-311++G** levels of theory (X = Li, Na, and K). Their corresponding less stable electronic isomers appears as singlet germylene minima. Scanning Ф as a function of energy for every triplet species gives two energy minima, separated by sig...
Article
Heavier atom containing X 2SiC2, and X 2GeC2 cyclopropenylidenes transform into new silylenes, germylenes, and carbenogermylenes at DFT and ab initio levels (X = H, CN, NH2, and OMe). The number of transformations or rearrangements appear roughly proportional to the covalent radii of the group 14 elements (Ge > Si > C).
Article
A novel core-shell magnetic-selenium nanocomposite (Fe3O4@SiO2@Se) was synthesized for fast and effective removal of Hg (II) ions from various industrial and environmental water samples. The composition, property, and structure of Fe3O4@SiO2@Se were characterized by spectral and microscopic techniques. The key parameters affecting the removal were...
Preprint
Full-text available
This research presents a novel biological route for the biosynthesis of nickel oxide nanoparticles (NiO NPs) using marine macroalgae extract as a reducing and coating agent under optimized synthesis conditions. XRD and TEM analyses revealed that phytosynthesized NiO NPs are crystalline in nature with a spherical shape having a mean particle size of...
Article
Full-text available
The present study reports the synergistic antibacterial activity of biosynthesized silver nanoparticles (AgNPs) with the aid of a combination of chitosan and seaweed-derived polyphenols as a green synthetic route. Under optimum synthesis conditions, the rapid color change from yellowish to dark brown and UV–visible absorption peak at 425 confirmed...
Article
Full-text available
We report an ecofriendly synthetic approach for the fabrication of biogenic gold nanoparticles (AuNPs) using electron-rich sea cucumber extract as a bio-reductant and stabilizing agent in reducing gold cations into AuNPs at the optimal conditions. The produced AuNPs are spherical in shape with an average particle size of 11 ± 1.5 nm in transmission...
Article
Full-text available
This study reports the synthesis and potential application of biocompatible silica nanoparticles for subgrade soil stabilization. Nanosilica preparation as a major component from wheat husk ash is systematically studied and confirmed by FTIR, ICP, XRD, and TEM analyses. The produced biogenic nanosilica showed an amorphous structure with an average...
Article
Full-text available
A novel eco-friendly procedure was developed to produce safer, stable and highly pure zinc oxide nanoparticles (ZnO NPs) using microalgae Chlorella extract. The ZnO NPs were synthesized simply using zinc nitrate and microalgae Chlorella extract which conducted at ambient conditions. In this recipe, microalgae Chlorella extract acted as the reducing...
Article
Full-text available
A facile novel green methodology is presented for the synthesis of highly stable and well-dispersed copper oxide nanoparticles using aqueous wheat seed extract. Under optimal reaction conditions, the wheat seed extract-derived electron-rich biomolecules were functioned as a reducing and capping/ stabilizing agent. The ultraviolet-visible absorption...
Article
The effect of hydroxyapatite nanoparticles (HA NPs) contents on the antibacterial activity, physical, and mechanical properties of sodium alginate (SA) film was scrutinized. The samples were prepared via incorporation of three different concentrations of HA NPs (1%, 3%, and 5%) into alginate solution at ambient temperature. In all SA/HA matrices, H...
Article
A novel biological method is proposed for producing ceramic alpha aluminum oxide nanoparticles using an extract of the algae Sargassum ilicifolium. The algal extract functions as a bioreducing as well as a stabilizer agent. The presence of an absorption peak at 227 nm, confirmed the formation of the aluminum oxide nanoparticles using a UV-visible s...
Article
Full-text available
In this study, a simple and reliable method by gas chromatograph-mass spectrometry (GC-MS) was developed for the fast and regular identification of 3, 4-MDMA impurities in ecstasy tablets. In so doing, 8 samples of impurities were extracted by diethyl ether under alkaline condition and then analyzed by GC-MS. The results revealed high MDMA levels r...
Research
Full-text available
• A facile green recipe was developed to synthesize highly pure, safe and durable magnetite nanoparticles (Fe3O4 Nps) in neutral medium using homemade starch-rich potato extract. • TGA and FTIR confirmed that functional groups in starch-rich potato aqueous extract act as the reducing agent and as a stabilizing layer on freshly formed magnetite Nps....
Article
Full-text available
A facile green recipe was developed to synthesise highly pure, safe and durable zinc oxide nanoparticles (ZnO Nps) using homemade starch-rich potato extract. The ZnO Nps were synthesised using zinc nitrate and potato extract, and the whole reaction is carried out for 30 min at 80 °C. In the synthesis, starch-rich potato extract acted as the reducin...
Article
Full-text available
A novel nanoadsorbent is synthesized through functionalization of hydroxyapatite with iron oxide (Fe 3 O 4 /HAP). It is applied as an efficient and economical adsorbent for green removal of toxic mercury (II) ions from water. Crystal structure and morphology of Fe 3 O 4 /HAP are characterized by XRD and SEM analyses. To its adsorption capabilities,...
Article
Full-text available
In the current study, a novel green chemistry recipe is presented for elite phytosynthesis of magnetite nanoparticles (Fe3O4 NPs), using homemade starch-rich potato extract in water as the reaction medium. In this approach, starch-rich potato extract operates as the reducing agent and a stabilizing layer on newly fabricated Fe3O4 NPs. Furthermore,...
Article
Full-text available
In this study, ZnO/HAP nanocomposite with excellent photocatalytic activities was successfully synthesized by sol–gel method and used for degradation of 2-mercaptobenzoxazole (MBO) as model of odorous mercaptan compound in water. To optimize the performance of ZnO/HAP photocatalytic capabilities, ZnO/HAP loading (0.05–0.3 g/L), irradiation time (1...
Article
Degradation of carbon supported platinum catalysts is a major failure mode for the long term durability of high temperature proton exchange membrane fuel cells based on phosphoric acid doped polybenzimidazole membranes. With Vulcan carbon black as a reference, thermally treated carbon black and multi-walled carbon nanotubes were used as supports fo...
Article
Full-text available
Size, purity, yield, and morphology of arc-synthesized nanosteel particles are altered by the employed currents (50, 80, and 100 A/cm2), as well as the media [nitrogen, open air, ethylene glycol, and distilled water saturated with polyvinylpyrrolidone (PVP)]. Nanoparticles (Nps) produced at 80 A/cm2 in distilled water, PVP-saturated distilled water...
Article
We have discussed the fabrication of tungsten nanoparticles (W Nps) using arc discharge as a novel technique. Our research focused on optimizing operation parameters such as the applied current and media. The size, morphology and the crystalline phase (α- vs. β-W Nps) are altered by changing the applied currents (40–160 A), as well as the employed...
Article
Full-text available
Arc-fabricated copper nanoparticles (Cu Nps) size, morphology and the crystalline structure, as well as the yields of Nps appear sensitive to the applied currents (50–160 A) in distilled water. The results indicate that the sizes of Cu Nps are directly proportional to the currents employed. At 50 A, TEM, XRD, and SEM analyses show fabrication of re...
Article
Full-text available
Thirteen heterofullerenes with (X)nC20−n formula are compared and constricted at MP2/6-311+G∗ and B3LYP/6-311+G∗ levels of theory (X=B, N, P; and n=2, 4, 5, 6, 10). The heats of atomization energies, band gaps (ΔEHOMO–LUMO), aromaticity, geometrical and conformational structures of these heterofullerenes strongly depend on their number of heteroato...
Article
F3CGe¨GeGeH, with two unpaired electrons, is the only triplet (t) ground state germylene found among 30 divalent species, with XHGe3 formula, at six reasonably high ab initio and DFT levels (X = H, NH2, SiH3, and CF3). Its corresponding singlet (s) appears at a higher energy while showing a negative force constant. The crossing angle (Ф) between th...
Article
Full-text available
To optimize the arc fabrication of aluminum nanoparticles (Al Nps), six diverse media were probed including ethylene glycol (EG), distilled water, liquid nitrogen, gaseous nitrogen, sunflower oil, and tap water (all free of any surfactant or stabilizer). These were investigated at three different currents: 50, 100 and 150 A/cm2. EG at 50 A/cm2 prov...
Article
Following our quest for silylenes and germylenes, we have reached at W shaped novel triplet disilyleno- and digermylenocarbenes through optimization of 2,3-di(X)disilacyclopropenylidenes and 2,3-di(X)digermacyclopropenylidenes, respectively, at five ab initio and DFT levels (M = Si, Ge; X = H, F, Cl, Br). Also, we have met the challenge of confinin...
Article
Acyclic germylenes with XCCGeX formula, and singlet (Xs) and triplet (Xt) states are generated at ab initio and DFT levels, through free optimization of their corresponding cyclic singlet and triplet carbenes: 2,3-di(X)-2-germacyclopropenylidenes, 1s and 1t, respectively (X=F, Cl, and Br). The calculated frontier molecular orbitals, bond orders, NB...
Article
Full-text available
DFT calculations predict the existence of three new triplet ground state silylenes: [(imino)-methylene]silylene, [(cyanoimino)methylene]silylene, and [(methoxyimino)methylene]silylene, with CNSiX formula (X = H, CN, and OMe, respectively). Discrepancies are found between DFT and some ab initio results.
Article
Full-text available
Systematic studies are carried out on the multiplicity vs. the stability for 24 phospha-carbenes, C2XP, at seven levels of theory: B3LYP/6-31G**, B3LYP/6-311++G**, MP2/6-31G*, MP3/6-31G*, MP3/6-311+G**, MP4(SDTQ)/6-311++G** and QCISD(T)/6-311++G** (for XH, F, Cl and Br). Twelve of these carbenes are singlet (s) and the rest are in their triplet (t)...
Article
Full-text available
Singlet–triplet energy separations in silylenes: C2HSiX (where X=H, F, Cl and Br), are compared and contrasted, at six levels of theory: HF/6-31G*, HF/6-311++G**, B3LYP/6-311++G**, MP2/6-311++G**, MP4 (SDTQ)/6-311++G** and QCISD (T)/6-311++G**. Four possible structures are considered for each singlet (s) and triplet (t) states of C2HSiX species: si...

Questions

Questions (13)
Question
I am trying to prepare Cerium oxide nanoparticles. literature suggested the acidic pH of the reaction. what is the reason? what is the mechanism if so
Question
Dear researchers,
Hi,
We synthesized alumina nanoparticles using algae extract. the produced nanoparticles calcinated at 1200 C inorder to obtain stable alpha Al2O3 nanoparticles. suprisingly the SEM and TEM images reveal good quality of dispersion and slight agglomeration!
generally, nanoparticle agglomerate at higher temperature. anyone can explain why we found littel growth of particles? is it related to organic moieties present in algae extract?
Thank you for your sharing your comments.
Question
Dear Researchers,
i hope that all is well with you!
I am quite interested in to find the source of gelatin production by chemical techniques. in particular I would like to know how one can recognize pork gelatin from beef gelatin by practical chemical route in short time in lab?
Thank you for your contribution and cooperation
Question
We synthesized alumina nanoparticles by algal extract at ambient condition. we recieved TEM images as attached and we are quite sure what exactly nanoparticles shape (needle, bar, spherical or irregular).
Question
we try to compare bulk zinc salt with its nano scale particles through UV spectroscopy monitoring but according to our results bulk zinc acetate salt does not show any peak in UV spectrum. so we have doubt about this strange result.
any related experience have done before?
Question
The aim is to prepare transition metals such as Pt, Au, Ag and Ni self-assembly nanoparticles for bio-sensor application. so i am looking for facile practical procedure. introducing references or suggestion will be helpful. 
Question
we have used starch as template for nanoparticle growth and it undergoes oxidation (as reducing agent) during the reaction. we would like to find a test to recognize such conversion. are Benedict's and Iodine Tests appropriate to use?
Question
we obtained two different particle size using XRD and SEM
XRD shows particle size of 40 nm
while SEM reveals particle size of 20 nm
is it reasonable to find such differences in particle diameters? if so please refer me corresponding references
Thank you
Question
I prepared Cu nanoparticle by polysaccharide (both reducing and capping agent).
how can i  realize the hydrophilic and hydrophobic nature of  produced nanoparticles....any technique or protocol in this regard?
thank you for cooperation
Question
When the metal salt (ex. Al salt) is added to solution with starting pH=7 when the reaction is performed pH decreases to 3. why? any reason behind that?

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