Showing papers by "Masoud Salavati-Niasari published in 2019"
TL;DR: This review summarizes magnetic nanoparticles and magnetic spinel ferrit's properties, remarkable approaches in magnetic liposomes, magnetic polymeric nanoparticles, MRI, hyperthermia and especially magnetic drug delivery systems, which have recently developed in the field of magnetic nanoparticle and their medicinal applications.
324 citations
TL;DR: Zn0.35Fe2.65O4 nanostructure was prepared as a ferrite material by using a simple sonochemistry method and the effect of different parameters such as sonication time and power were studied.
311 citations
TL;DR: In this paper, DyMn2O5/Ba3Mn 2O8 nanocomposites were prepared by hydrothermal route as potential hydrogen storage materials, for the first time.
259 citations
TL;DR: In this article, Nd2Sn2O7-Nd2O3 nanostructures have been applied for photocatalytic degradation of erythrosine contaminant under UV illumination.
Abstract: Highly photocatalytic active Nd2Sn2O7 nanostructures have been prepared by a novel, facile and eco-friendly approach with employing grape extract as green fuel, for the first time. The calcination temperature has been optimized to achieve the pure product with the best shape and grain size via an eco-friendly approach. FESEM, BET, XRD, DRS, FT-IR, TEM, PL and EDS have been applied to determine purity and investigate properties of the produced Nd2Sn2O7 nanostructures. It was found that utilization of grape juice at 500 °C could be favorable to produce homogeneous Nd2Sn2O7 nanostructures with the sphere-like shape and high purity. Nd2Sn2O7 structures have been applied for photocatalytic destruction of erythrosine contaminant under UV illumination and their photocatalytic efficiency has been compared. It was found that Nd2Sn2O7 nanostructures produced with applying grape juice as green and novel fuel at 500 °C, could display superior photocatalytic performance towards erythrosine destruction. By applying them as photocatalyst, 90% of erythrosine contaminant was destructed. Besides, Nd2Sn2O7-Nd2O3 nanostructure has been produced with employing grape juice as novel and green fuel to evaluate the possibility of coupling Nd2O3 into Nd2Sn2O7. Results demonstrated that coupling Nd2O3 into Nd2Sn2O7 could improve the photocatalytic efficiency in erythrosine destruction to 96%.
224 citations
TL;DR: In this article, the first try on the survey of photocatalytic efficiency of CoFe2O4@SiO2@Dy2Ce2O7 nanostructures was made.
Abstract: CoFe2O4@SiO2@Dy2Ce2O7 magnetic nanocomposite as recyclable photocatalyst has been prepared for the first time. The cobalt ferrite component was produced through combustion route with the aid of grape juice as novel and green fuel, and the silica component was prepared through sol-gel route with the aid of 2,2-dimethyl-1,3-propanediamine as new basic agent as well as Dy2Ce2O7 component has been synthesized through a modified Pechini route with the aid of 2,2-dimethyl-1,3-propanediamine as novel pH regulator. The as-fabricated CoFe2O4@SiO2@Dy2Ce2O7 nanostructures were characterized by FESEM, DRS, TEM, EDX, XRD, VSM and BET. This is the first try on the survey of photocatalytic efficiency of CoFe2O4@SiO2@Dy2Ce2O7 nanostructures. Role of kind of irradiation source, catalyst loading and kind of contaminant has been described upon improving performance of CoFe2O4@SiO2@Dy2Ce2O7 nanostructures. The results indicated that the fabricated CoFe2O4@SiO2@Dy2Ce2O7 could be potentially utilized as efficient and favorable kind of recyclable photocatalyst for removal of water contaminants.
178 citations
TL;DR: In this article, a green prepared photoluminescence sensor for detecting Pseudomonas aeruginosa bacteria, lead and mercury ions was presented, which is feasible for bio medial applications.
Abstract: The purpose of this research is synthesis of photoluminescence nanoparticles for detection of Pseudomonas aeruginosa that is feasible for bio medial applications. Carbon nano-templates were prepared from soot by burning of almond as a green precursor. Then NiFe2O4 nanoparticles were synthesized on the carbon templates. For preparation of hollow structures, the product was calcinated for removing of carbon templates. Finally, carbon dots were synthesized on the hollow nickel ferrite cores by applying ethylene diamine and citric acid. Phase of the products was approved by X-ray diffraction (XRD), scanning electron microscopy (SEM) depict the morphology and transmission electron microscopy (TEM) probe the grain size and hollow structures of the nickel ferrite, carbon dot and nanocomposites. Fourier transform infrared (FT-IR) spectroscopy approved the purity of the nanostructures. Ultraviolet–visible (UV–Vis) absorption and photo-luminescence (PL) spectroscopy confirmed appropriate photo-luminescence under ultraviolet irradiation. Vibrating sample magnetometer (VSM) shows ferromagnetic property of the both hollow NiFe2O4 and nickel ferrite-carbon nanocomposite. This work presents a new nanostructure as green prepared photoluminescence sensor for detecting of Pseudomonas aeruginosa bacteria, lead and mercury ions. Outcomes confirm decreasing in photoluminescence intensity of the nanocomposite by enhancing of Pseudomonas aeruginosa, Pb(II) and Hg(II) ions. Antibacterial effect of NiFe2O4-carbon dot on the degradation of Pseudomonas aeruginosa bacteria was also examined.
157 citations
TL;DR: Ferrite nanocatalysts not only are environmentally benign and compatible with green chemistry aspects but also can be simply recovered from reaction systems and recycled up to several times almost without significant loss of their catalytic activity.
116 citations
TL;DR: A facile and eco-friendly route to prepare pure Pr2Ce2O7 nanostructures with very desirable performance in hydrogen storage has been developed utilizing a novel and efficient fuel, banana extract, at mild condition as discussed by the authors.
91 citations
TL;DR: The excellent degradation activity of CuBi2O4/Bi3ClO4 photocatalyst can be attributed to the strong visible light absorption, high charge separation efficiency, fine particle size distribution and proper band gap of the nanocomposite.
81 citations
TL;DR: The findings denote that the applied biofuel can play a meaningful role as capping agent during preparation of Nd2Sn2O7-SnO2 nanocomposites.
80 citations
TL;DR: In this article, a nanostructured Dy 2 Ce 2 O 7 with good electrochemical hydrogen storage properties has been produced utilizing a novel and green method in the presence of fig extract, for the first time.
TL;DR: Neodymium Vanadate (NdVO4) nanostructures were successfully synthesized via a modified solid state method in the presence of ligand through a modifiedSolid state method to improve the photocatalytic efficiency.
TL;DR: In this paper, a new green and simple approach has been utilized to prepare nanostructured Dy2Sn2O7 as a remarkable material for hydrogen storage technology that they can bring about the diminution in the environmental contamination.
TL;DR: In this article, a novel NiO/Bi2O3/Bi3ClO4 heterojunction nanocomposite with high visible-light-driven photocatalytic performance has been fabricated via an improved Pechini sol-gel method.
TL;DR: Investigations showed that highly luminescent sulfur and nitrogen doped graphene quantum dots have a good photostability and excitation-dependent emission fluorescence and were applied as a photoluminescence probe for detection of ascorbic acid (AA).
TL;DR: TiO2/Sb2S3/GQDs nanocomposite was prepared by solvothermal method to study its antibacterial properties and shows the highest antibacterial activity against E. coli and Staphylococcus aureus.
TL;DR: In this paper, carbon self-doped graphitic carbon nitrides-Li2FeMn3O8 (CCN/LFMO) nanocomposites were designed through the straightforward approach as electrode materials for electrochemical hydrogen storage application.
Abstract: High-performance and high-capacity hydrogen storage compounds have been eagerly pursued as a power supply in renewable energy storage vehicles. With this purpose, carbon self-doped graphitic carbon nitrides-Li2FeMn3O8 (CCN/LFMO) nanocomposites were designed through the straightforward approach as electrode materials for electrochemical hydrogen storage application. The hydrogen storage performances of the samples were identified on the basis of chronopotentiometry charge–discharge techniques in an alkaline medium. Cyclic voltammetry and electrochemical impedance spectroscopy were then used to determine the electrochemical attributes of pristine LFMO, CCN, and representative nanocomposites. As a result, the CCN/LFMO electrode with a ratio of (70:30) exhibited 2275 mA h/g discharge capacity at the 20th cycle, while pristine LFMO and CCN show 180 and 1050 mA h/g discharge capacity, respectively. This strategy is not complicated but is very impressive and executable due to the multifunctional aspect of CCN, a...
TL;DR: In this paper, a simple, effectual and green approach to produce pure Dy2Ce2O7 nanostructures employing a novel fuel, Phoenix dactylifera extract was examined, for the first time.
TL;DR: In-situ growth of zeolite imidazolate frameworks on the surface of layered double hydroxides (LDHs) for preparation of porous nanocomposites is a favorable strategy to design potential materials in separation fields and was used in the quantification of PEN G in real samples.
TL;DR: In this paper, the authors demonstrate a novel class of hydrogen storage nanosystems (polycrystalline Ba2Co9O14) with unique structure and high power electrochemical discharge efficiencies.
TL;DR: In this paper, a green approach including plant extracts for a satisfying reduction of GO to reduced graphene oxide (r-GO) which leads to removing of oxygen containing functional groups was proposed and tested.
TL;DR: In this article, the effect of different morphologies on the antibacterial activity of Cu2O/GQDs against Gram-negative (E. coli) and Gram-positive (Staphylococcus aureus) bacteria was investigated.
Abstract: Here we used Graphene Quantum Dots (GQDs) as a reducing agent to produce Cu2O/GQDs nanocomposite from copper(II) acetate. Different morphologies of Cu2O/GQDs nanocomposites including particles, rod-like nanostructures, cauliflower-like nanostructures, and flower-like nanostructures were fabricated by tuning the synthesis parameters. Then the effect of these morphologies on the antibacterial activity of Cu2O/GQDs against Gram-negative (E. coli) and Gram-positive (Staphylococcus aureus) bacteria was investigated. Results show that flower-like Cu2O/GQDs nanocomposite shows the highest antibacterial activity with MIC of 0.1 against E. coli and 0.7 against Staphylococcus aureus.
TL;DR: In this paper, a simple and one-pot glycothermal method was developed for the synthesis of Ni/ZnO nanocomposites, and the effect of different reaction time and temperature were examined in order to approach to the optimal sample.
TL;DR: Li2B4O7/LiBO2/Li3BO3 (LBO) nanocomposites were synthesized by a modified Pechini sol-gel route utilizing the mixture of different polybasic acids and gelling agents as mentioned in this paper.
Abstract: In the present study, Li2B4O7/LiBO2/Li3BO3 (LBO) nanocomposites were synthesized by a modified Pechini sol-gel route utilizing the mixture of different polybasic acids and gelling agents. This work demonstrated that by controlling the reaction variables including kind of polybasic acids and gelling agents, pH and mole ratio of polybasic acid to total metals, the LBO nanostructures with various morphologies and particle sizes were prepared. Furthermore, the LBO nanocomposites showed excellent TOC removal (70%) and photocatalytic efficiency (91%) in order to photodegradation of acid violet 7 azo dye as water pollutant under UV light irradiation. Moreover, compared to commercial P25 photocatalyst, the LBO heterostructures exhibited higher photodegradation activity for removal of acid violet 7 dye in 90 min under UV light irradiation, even after four times cycles. The excellent photocatalytic degradation of LBO photocatalyst can be ascribed to the strong photon absorption, high-efficiency charge carrier separation, uniform particle size and appropriate band gap energy of the nanocomposite. Also, radical trapping capability test exhibited that the photoinduced superoxide radicals (•O2−) and holes (h+) were the prevailing active species in the photocatalytic performance.
TL;DR: It was found that the DyVO4 nanoparticles synthesized in presence of CTAB as an optimum condition, are uniform with average size of ~24 nm, and could provide effective functional materials for elimination of chemical contaminants from wastewater through the photocatalytic process.
TL;DR: The preparation and characterization of novel holmium vanadate (HoVO4) nanostructures that fully used in the photodegradation efficiency of anionic and cationic organic pollutants are introduced.
TL;DR: In this paper, the authors showed a record of above 2000 mAh discharge capacity of a binary metal oxides Ce0.75Zr0.25O2 nanopowders.
TL;DR: In this article, a nano-sized mixed metal oxide (MMO) Ca3MnO6 was synthesized using wet-chemistry methods such as co-precipitation, ultrasonic, microwave, reflux, and hydrothermal methods.
TL;DR: In this paper, the photocatalytic behavior of MgCr2O4 nanoparticles was evaluated using the demolition of several organic contaminates (rhodamine B, methylene blue and methyl orange) under UV irradiation.
Abstract: The synthesized MgCr2O4 nanoparticles were characterized by various techniques such as; XRD, SEM, EDS, TEM, DRS, TGA and IR. In order to improve the morphology of nanoparticles, several alkaline and capping agents were employed. In this manuscript TETA (full name), NH3 and N(Et)3 were used as alkaline agents and PVP, dimethylglyoxime (DMG) and 2-hydroxyacetophenone as capping agents. TETA and DMG were chosen as alkaline and stabilizer agents respectively that resulted in the spherical morphology of the MgCr2O4 nanoparticles. Nanoparticles surface were covered by Ag nanoparticles using the photodeposition method. The photocatalytic behavior of MgCr2O4 nanoparticles was evaluated using the demolition of several organic contaminates (rhodamine B, methylene blue and methyl orange) under UV irradiation. In order to investigate the photocatalytic properties of the nanoparticles, the effect of various type of pollutant, grain size and morphology of MgCr2O4 nanostructures, various pollutants, dye dosage and pH of solution were studied on the photocatalytic behavior of products.
TL;DR: In this paper, a mesoporous nanocomposite of CuCo2O4/CuO synthesized by sonochemical assistant thermal decomposition and the anti-cancer effect was studied as well.