Showing papers by "Masoud Salavati-Niasari published in 2021"
TL;DR: In this paper, the authors reported the synthesis of Co/Co3O4 nanocomposites investigated for their photocatalytic and antimicrobial activities, and the affecting parameters (various surfactants and calcination) on the synthesis process were investigated.
425 citations
310 citations
TL;DR: In this paper, the authors reported the sonochemical synthesis of DBNO NC (dysprosium nickelate nanocomposite) using metal nitrates and core almond as a capping agent.
Abstract: The present work reports the sonochemical synthesis of DBNO NC (dysprosium nickelate nanocomposite) using metal nitrates and core almond as a capping agent. In addition, the effects of the power of ultrasound irradiation were investigated. The BaDy2NiO5/Dy2O3 and BaDy2NiO5/NiO nanocomposites were synthesized with sonication powers of 50 and 30 W, respectively. The agglomerated nanoparticles were obtained using different sonication powers, including 15, 30, and 50 W. The results showed that upon increasing the sonication power, the particle size decreased. After characterization, the optical, electrical, magnetic, and photocatalytic properties of the NC were studied. The nanocomposites showed an antiferromagnetic behavior. In this study, the photocatalytic degradations of two dyes, AR14 and AB92, were investigated in the presence of DBNO NC. Furthermore, the effects of the amount of photocatalyst, the concentration of the dye solution, the type of organic dye, and light irradiation on the photocatalytic activity of the nanocomposite were studied. The results showed that with an increasing amount of catalyst and decreasing concentration of dye, the photocatalytic activity of the nanocomposite was increased. This activity for the degradation of AR14 is higher than that of AB92. Both AR14 and AB92 dyes show higher photocatalytic degradation under UV irradiation than under Vis irradiation.
300 citations
TL;DR: Chitosan nanomaterials have become a hot topic in biomedicine due to exerting antimicrobial effects with interestingly high levels of biodegradability and biocompatibility without causing toxicity as discussed by the authors.
150 citations
06 Jan 2021
TL;DR: In this paper, the ultrasonic treatment in g-C3N4, Fe2O3, and EuVO4 was used to obtain high-performance catalysts.
Abstract: Environmental protection and the need for green energy have become a fundamental concern for humanity. Herein, to obtain high-performance catalysts, ultrasonic treatment in g-C3N4, Fe2O3, and EuVO4...
142 citations
TL;DR: Very favorable catalytic yield and durability were demonstrated by spindle-shaped PbWO4 nanostructure (produced at power of 60 W for 10 min and with usage of maltose) and usage of ultrasonic irradiation could bring to improvement of catalyticield of PbO4 to 93%.
106 citations
TL;DR: A new and facile sonochemical pathway to fabricate Nd2Zr2O7 nanostructures and nanocomposites was used, which exhibit superior performance for conversion of NOx to N2.
78 citations
TL;DR: In this paper, a green reducer and stabilizer (Phoenix dactylifera extract) was used to degrade organic dyes such as Rhodamine B, Acid Black 1 and phenol red under visible illumination.
70 citations
TL;DR: In this article, the impact of usage of diverse capping agents as well as ultrasonic time on the size, catalytic functionality and shape of ZnCo2O4/Co3O4 were considered.
65 citations
TL;DR: The novel fabrication of new CuI/g-C3N4 nanocomposite by hydrothermal and ultrasound-assisted co-precipitation methods proves that the nanocomposition possesses high potential for killing bacteria, and it can be nominated as a suitable agent against bacteria.
59 citations
TL;DR: In this article, a nano-electrocatalyst based on Cu5V2O10 is successfully fabricated by one-pot hydrothermal treatment and used for the examination of mefenamic acid (MFA) in real samples, for the first time.
TL;DR: This review investigates hydrothermal synthesis of metal selenides and diselenides by investigating the investigation of the photocatalytic activities of these metal Selenides followed by different synthesis methods and strategies employed for the synthesis of them.
TL;DR: In this paper, an eco-friendly and green fabrication technique to synthesize RGO/Cu nanocomposite by the reduction of graphene oxide and Cu2+ ion utilizing spearmint extract as a reductant and capping agent was depicted.
TL;DR: In this paper, porous hollow Ag/Ag2S/Ag3PO4 heterostrucutres were constructed for efficient photocatalytic degradation of tetracycline under simulated sunlight irradiation.
TL;DR: An updated summary of latest developments in the nanomedicines field as well as nanobased drug delivery systems over broad study of the discovery/ application of nanomaterials in improving both the efficacy of drugs and targeted delivery of them is offered.
TL;DR: Results this study reported that the use of the P. muralis/ZnO/GQDs–NCs formulation could be employed as a novel agent antibacterial to inhibit bacterial growth and the biofilm formation.
TL;DR: In this paper, Tl4HgI6 nanostructures have been successfully fabricated through a simple precipitation route and the impact of the TlI stoichiometric ratio to HgI2, and the types of surfactants was explored in terms of the purity, structure, scale, and shape of the samples.
Abstract: Semiconductor photocatalysis has drawn much consideration from scientists in the current decade. The photocatalytic procedure is an eco-friendly process that has been recognized as a promising alternative for the removal of several hazardous pollutants. The deficiencies of current photocatalytic systems, which limit their technical applications, include low-utilization of visible radiation, fast charge recombination, and low migration capacity of the photo-induced electron-holes. In the present study, Tl4HgI6 nanostructures have been successfully fabricated through a simple precipitation route. The impact of the TlI stoichiometric ratio to HgI2, and the types of surfactants was explored in terms of the purity, structure, scale, and shape of the samples. The bandgap of nano-Tl4HgI6 was evaluated via diffuse reflectance spectroscopy (DRS) to be around 2.05 eV, which is suitable for photocatalytic performance. Raman spectroscopy results corroborated the X-ray diffractometry results and revealed that the Tl4HgI6 nanoparticles were successfully fabricated. The structure, shape, and scale of the products were studied by field emission scanning electron microscopy. It was observed that different factors had a notable effect on the morphology and size of the products. The maximum antibacterial activity of Tl4HgI6 was determined against S. aureus, E. coli, and M. catarrhalis. These outcomes demonstrated that Tl4HgI6 displays efficient bactericidal activity against Gram-positive and Gram-negative microorganisms. The anti-biofilm activity revealed that the best biofilm decrease was recognized at higher Tl4HgI6 concentrations (2 × the minimum inhibitory concentration). This represents the first study of the investigation of the photocatalytic activity of Tl4HgI6 nanostructures. The photocatalytic performance was studied to eliminate various dyes and with different dosages of the catalyst under UV and visible light. The results indicate that these nanoparticles can remove organic dyes with high efficiency.
TL;DR: In this article, a controllable sonochemical approach for photocatalyst synthesis was proposed. But the results showed that the photocatalytic performance of the manganese tungsten oxide nanostructure was superior to that of the samples made under other conditions.
TL;DR: In this article, the photocatalytic performance of PrVO4 nanoparticles and CdO nanocomposites was examined by degradation of azo dyes under UV and visible irradiation.
TL;DR: In this paper, the fabrication of novel nanocomposite (CuI-PbI2) by the sonochemical method, architectural, morphological observations, and relevant electrochemical hydrogen storage features has revealed 515 and 585 mAh/g discharge capacity for bulk and nano-sized samples.
TL;DR: Results indicate that nanocomposite hydrogels containing a higher content of NCDs have smaller pore sizes and higher mechanical properties.
Abstract: Hybrid injectable and biodegradable hydrogels based on oxidized alginate/gelatin and containing nitrogen-doped carbon dots (NCDs) as a reinforcement have been fabricated and crosslinked by 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC)/N-hydroxysuccinimide (NHS) as the chemical crosslinking agents in the hydrogel system The idea of composite hydrogels relies on the assumption that they supply a microenvironment that is convenient for the exchange of nutrients via a porous structure and cell proliferation and have mechanical characteristics that approximately match natural tissue The effect of the NCD content on the morphology structure, mechanical strength, swelling ratio, and biodegradation has been investigated The results indicate that nanocomposite hydrogels containing a higher content of NCDs have smaller pore sizes and higher mechanical properties The in vitro biodegradation and swelling behavior demonstrated that increasing the amount of NCDs up to 006% decreased the swelling ratio and weight loss of the hydrogels The composite hydrogels are biocompatible, as verified by the MTT assay of MG-63 cells The N-doped graphene quantum dots considerably affect degradation and interaction within the cells and hydrogels
TL;DR: This research fabricates antibacterial pads by utilizing of graphene quantum dots (GQDs) as a linker, stabilizing, and reduction agent of in situ synthesized Ag nanoparticles (Ag NPs) on cotton pad and significantly improves the antibacterial activity of Ag NPs.
TL;DR: In this paper, double perovskite Tb2ZnMnO6 nanoparticles were successfully synthesized by a sol-gel auto combustion method using a sol−gel auto-combustion method.
Abstract: In this work, new double perovskite Tb2ZnMnO6 nanoparticles were successfully synthesized by a sol–gel auto combustion method.
TL;DR: In this paper, ZnO nanoparticles (ZnO NPs) and carbon-quantum-dotsdecorated (CQDs) NPs were prepared via different procedures and precursors, including X-ray diffraction (XRD) analysis, energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), FT-IR, and Scanning Electron Microscopy (SEM).
TL;DR: In this article, gold (Au) and zinc oxide (ZnO) nanoparticles decorating reduced graphene oxide (RGO) was designed by hydrothermal method using the agent of 1,8 diamino, 3, 6 dioxaoctan (DDO) with triple function: reducing agent, capping agent and alkaline agent.
Abstract: Gold (Au) and zinc oxide (ZnO) nanoparticles decorating reduced graphene oxide (RGO) was designed by hydrothermal method using the agent of 1,8 diamino, 3, 6 dioxaoctan (DDO). This novel DDO with triple function: reducing agent, capping agent and alkaline agent lead to the decoration of Au and ZnO on the RGO. Ternary nanohybrid of Au/ZnO/RGO are probed as photocatalysts for comparative photo-degradation study. The pollutant model of Rhodamine B with different concentrations and pH in the presence of diverse dosages of designed nanohybrids was tested in terms of photocatalyst degradation. Further, Au/ZnO/RGO nanohybrid delivered a good efficiency of 95.05 % at pH of 11 and dye concentration of 10 ppm in the presence of 0.06 g designed photocatalysts under visible light. The efficiency retention over 7 runs was 85.80%.
TL;DR: In this paper, the thermosensitive injectable hydrogels based on oxidized alginate, gelatin, and carbon nitride quantum dots (CNQDs) have been fabricated for tissue engineering.
TL;DR: In this paper, a nano-sized Tb-Fe-O (TFO) structures were fabricated via rapid microwave route using Tb(NO3)3·6H2O precursors and verjuice (lemon juice) complexing agent as a surfactant.
TL;DR: In vitro biocompatibility of the products tested by MTT assay indicates that cell viability and attachment depend on the presence of SiO2 NPs, and in vitro biodegradation studies show that the hydrogels withoutSiO2 are more unstable than the Hydrogels containing SiO 2 NPs.
Abstract: Porous substrates composed of biodegradable polymers and nanoparticles have found extensive use as three-dimensional (3D) scaffolds to regenerate damaged tissues through the incorporation of cells or growth factors. Here, injectable thermally responsive hydrogels based on SiO2 nanoparticles (NPs), alginate, and gelatin biopolymers, with possible utilization for cartilage tissue engineering, are introduced. The nanocomposites contain different amounts of SiO2 NPs for reinforcement and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/N-hydroxysuccinimide (NHS) for chemical crosslinking of polymer chains in the 3D hydrogel network. The cross-sectional structure of the hydrogels containing 0.25, 1.5, and 3.0% SiO2 NPs was observed by FE-SEM, confirming porous morphology with interconnected pores. Based on the rheometer analyses, by increasing the amount of SiO2 NPs, the mechanical strength of the gels can be found. In addition, in vitro biodegradation studies show that the hydrogels without SiO2 are more unstable than the hydrogels containing SiO2 NPs. In vitro biocompatibility of the products tested by MTT assay indicates that cell viability and attachment depend on the presence of SiO2 NPs.
TL;DR: In this paper, AlV3O9/SnO2 binary nanocomposites (AVS) were fabricated by a low-temperature and short-time PEG-assisted hydrothermal method combined with subsequent calcination.
Abstract: The rational design of proficient and durable active materials is an important task for rechargeable Li-ion batteries. Herein, AlV3O9/SnO2 binary nanocomposites (AVS) were fabricated by a low-temperature and short-time PEG-assisted hydrothermal method combined with subsequent calcination. The as-prepapred 3D hierarchical flower-shaped AVS micro/nanosphere composites showed a more specific capacity than those of pristine AlV3O9 (AV) structures due to the coupling effect of two different energy-storage materials. Therefore, SnO2 with a preferable conductivity was equipped with facile electron transport among AlV3O9 and electrode layers. Notably, we followed the changes of the SnO2 content (5, 10, 20 wt%) to investigate the cycle stability, rate capability, and Couloumbic efficiency during the battery testing. As a positive electrode for a Li-ion battery, the cell with AVS nanocomposites including 20 wt% SnO2 was able to deliver a high specific capacity of 611.02 mA h g−1 at a current rate of 0.1C, which represented an upgrade over pristine AlV3O9 (233.05 mA h g−1). The assembled battery with AVS flower-shaped nanocomposites could be steadily cycled for 75 times at a current rate of 1C with an efficiency as high as ∼99%. Therefore, AlV3O9/SnO2 nanocomposites offer considerable promise to realize an operationally attractive Li-ion battery electrode.