Showing papers in "Polyhedron in 2019"

TL;DR: In this paper, green synthesis of silver nanoparticles was achieved by using Fritillaria flower plant extract as reducing, stabilizing and capping agent in the aqueous phase, under non-photo mediated conditions.

TL;DR: In this paper, the authors summarize the typical advances in the mechanochemical synthesis of MOFs over the last two decades and present a mini review of these advances, as well as a discussion of the potential uses in gas adsorption, separation, and catalysis.

TL;DR: In this paper, a green and novel catalyst was prepared through immobilization of cobalt complex on the surface of mesostructured SBA-15 and characterized by TGA, SEM, FT-IR, EDX, ICP, BET and X-ray mapping analytical methods.

TL;DR: One mononuclear Ni(II) complex [Ni(L1)(MeOH)2]·MeOH (1) and two novel trinuclear Ni (II) complexes [Ni3(L2)3(EtOH)6] (2) and [Ni 3(L 2) 3(H2O)6], constructed from symmetric N2O2-donors chelating ligands (H2L1 and H2L2), were synthesized and characterized by elemental analyses, FT-IR, UV-Vis spectra and

TL;DR: In this article, the activated carbon (AC) adsorbent with multimodal pore size distribution prepared from Amygdalus scoparia as low-cost and locally available source was applied for efficient adsorption of malachite green (MG) from aqueous media.

TL;DR: In this article, the ZnFe2O4@alginic acid nanocomposite was synthesized by a simple procedure and used as a green, cost-effective and heterogeneous catalyst in the synthesis of 2-amino-3-cyano-4H-pyran derivatives with a one-pot three-component reaction between various aromatic aldehydes, dimedone and malononitrile.

TL;DR: In this article, a novel SO3H-dendrimer functionalized magnetic nanoparticles (Fe3O4@D NH (CH2)4 SO 3H) were prepared and characterized by using FT-IR, X-ray diffraction patterns, scanning electron microscopy, transmission electron microscope, thermogravimetry analysis, and energy-dispersive Xray spectroscopy, which was successfully applied to the synthesis of highly substituted pyrans and polyhydroquinolines via a straightforward one-pot multicomponent condensation reaction.

TL;DR: In this paper, the structural properties of the Pd nanoparticles supported on Metformin modified graphene oxide (GO-Met-Pd) were determined by X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), field emission scanning electron microscope (FESEM), EDSEM, energy dispersive x-ray spectrography (EDS), wavelength-dispersive Xray spectroscope (WDX) and inductively coupled plasma (ICP).

TL;DR: In this paper, the formation of spherical-shaped AgNPs with size ranging from 10 to 25nm was also confirmed by TEM and FTIR analysis verified the involvement of phenolic compounds in AgNP formation.

TL;DR: In this article, a new multifunctional cobalt-II-based metal-organic framework, [Co(DCTP)(L)(H2O)2]n (NCST-1, NCST=”North China University of Science and Technology), was synthesized by self-assembly of Co(OAc)2·4H 2O with 1,4-bis(benzimidazol-1-ylmethyl)-benzene (L) and 2,5-dichloroterephthalic acid (H2DCT

TL;DR: Copper(I) complexes with a phenanthroline-phosphine set of ligands were synthesized by refluxing methanolic solutions of CuBr2 with at least a four fold molar excess of the phosphine ligands.

TL;DR: A Schiff base ligand, 6,6′-dimethoxy-2,2′-[o-phenylenebis(nitrilomethylidyne)]diphenolato (LA), and its mononuclear and dinuclear Ni(II) and Co-II) complexes were synthesized as discussed by the authors.

TL;DR: In this article, the synthesis of novel N-heterocyclic carbene (NHC)PdX2(morpholine) complexes (1a, i) were investigated for their inhibition action against equin serum butyrylcholinesterase (BChE) and Electrophorus electricus acetylcholinecholineine (AChE), as the capability drug aims for Alzheimer's disease (AD).

TL;DR: In this paper, the simultaneous ultrasonic-assisted removal of Congo red (CR) and phenol red (Ph R) dyes from the aqueous solutions was accomplished by using titanium oxide (TiO2) nanoparticles (NPs) loaded onto activated carbon (AC) prepared from bio-waste watermelon rind (WR), referred to as TiO2-NPs-ACWR.

TL;DR: A green process for modifying multi walled carbon nanotubes (MWCNTs) using extract of Stachys lavandulifolia as both stabilizer/capper and reductant agent was reported in this article.

TL;DR: In this article, a series of doped [EuxTb(1-x)L2(H2O)4]n·nNO3 compounds with different doping molar ratios were obtained, based on a view that the emissions of 1-Eu and 2-Tb are composed of three primary colors and they are isostructural.

TL;DR: In this paper, the ability of benzimidazole derivatives and their complexes to bind to DNA was investigated with DNA thermal denaturation experiments, in general showing weak interactions and the corresponding binding constants (Kb) were calculated suggesting an intercalative mode of binding.

TL;DR: In this paper, simultaneous and competitive removal of methylene blue (MB) and malachite green (MG) dyes was performed by employing nanostructure Zr-SBA-15, once using solid phase extraction method (SPE) and again using ultrasonic bath, followed by second-order derivative spectrophotometric method in order to resolve the corresponding overlapped spectra.

TL;DR: In this paper, three mononuclear binary metal complexes of the general formula [M(L)2] and [M1(L),3] were synthesized and were successfully characterized using spectroscopic techniques, together with elemental analysis, which indicated a monobasic bidentate nature of the ligand, coordinated via a deprotonated phenolic oxygen atom and an azomethine nitrogen atom.

TL;DR: In this article, two 3D mononuclear zinc and trinuclear copper complexes were synthesized via complexation of metal salts with based ligand HL1 (2-(3-bromo-5-chloro-2-hydroxyphenyl)-4-methyl-1,2-dihydroquinazoline 3-oxide, H is the deprotonatable hydrogen) originally.

TL;DR: In this article, the results indicate that GO/Fe3O4/TiO2-NiO could act as a suitable photocatalyst under visible light in the degradation of organophosphorus pesticides.

TL;DR: Two new Zn(II) coordination polymers (CPs) were synthesized and characterized by elemental analyses, IR spectra, thermogravimetric analyses, and single-crystal X-ray diffraction as discussed by the authors.

TL;DR: In this paper, a composite of n-type CeO2/p-type CuS heterojunctions as adsorbent/photocatalysts was successfully synthesized based on electrospinning technique, calcination and hydrothermal methods.

TL;DR: In this paper, the authors report the exploration of highly luminescent three-dimensional microporous metal-organic framework, [Zn2(oba)2(bpy)], synthesized by sonochemistry for highly selective and sensitive detection of Fe3+ in MeOH solution via a fluorescence quenching mechanism.

TL;DR: In this paper, the loading characteristics of K-CD-MOFs and drugs adsorption behavior was studied by changing the reaction time, temperatures, MOFs quality, initial drugs concentration and pH.

TL;DR: In this paper, the role of ultrasound irradiation power, reaction time and reaction temperature on the size and morphology of nano-sized coordination polymers (CPs) was investigated.

TL;DR: A series of six N−N−diarylformamidine dithiocarbamate ligands and their metal complexes of Cu(II) and Ni(II)- chloride salts have been synthesized as mentioned in this paper.

TL;DR: In this paper, the first report of nano-Fe3O4@SiO2-NH-gallic acid in multicomponent reactions as a catalyst was reported, which involves successful surface modification of Fe3O 4/SiO 2-NH2 as a potent magnetic support with a well-known natural acid which attracts considerable interests because of its applications in different sciences.

TL;DR: In this paper, a formulation composition contribution on curcumin-NLC characteristics by CCD, while its stability, digestion and release in SGM was evaluated, is investigated.

TL;DR: In this paper, the authors used central composite design (CCD) combined with response surface methodology (RSM) to achieve photo-degradation of alizarin yellow R (AY) and correlation among response to variables as main and interactions optimized by CCD.