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The novel Ag 0 /Cu 2 MoO 4 nanoparticles was simply synthesized via chemical method. Ag/Cu 2 MoO 4 nanoparticles was characterized by FESEM image, XRD curve, UV-vis spectroscopy, BET analysis, and XPS spectrum. XRD pattern depicts that the cubic crystalline phase of particles. The band gap of Ag/Cu 2 MoO 4 nanoparticles was achieved to 2.04 eV, which that depicted the best activity under visible light irradiation. Ag/Cu 2 MoO 4 nanoparticles exhibits 99.74% degradation under light and persulfate ion which was higher response than Cu 2 MoO 4 nanoparticles (83.56%) under this condition. The scavenging test indicates the important reactive species in removal process were •OH, and •SO 4 - . The Ag/Cu 2 nanoparticles was indicated highly photo-stability for the MG degradation after 5th cycle. Ag/Cu 4 nanoparticles was indicated highly photo-stability for the MG degradation after 5th cycle. Ag/Cu 2 MoO 4 exhibits substantial antibacterial properties against P. aeruginosa and S. pneumoniae. Moreover, Ag/Cu 2 nanoparticles was experimented to peroxidase-like performance for the colorimetric detection of glucose with the Limit of Detection about 52.23 nM.4 nanoparticles was experimented to peroxidase-like performance for the colorimetric detection of glucose with the Limit of Detection about 52.23 nM., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)

A new Fe3O4/Mo-MOF (metal–organic framework) magnetic nano polymer was synthesized in one step and Ultrasound assisted. Fe3O4/Mo-MOF magnetic nano polymer was characterized by XRD, SEM, EDX mapping BET, VSM, and FT-IR. The results of the structure confirmation revealed that the ultrasonic method had created unique properties in the Fe3O4/Mo-MOF magnetic nano polymer, and its biological and catalytic applications were investigated. A new pyrano[2,3-d]pyrimidines derivative was synthesized using the catalytic activity of Fe3O4/Mo-MOF magnetic nano polymer in a three-component reaction involving malononitrile, aldehyde derivatives, and barbituric acid derivatives with Fe3O4/Mo-MOF magnetic nano polymer as a magnetic catalyst. In the antimicrobial activity of Fe3O4/Mo-MOF magnetic nano polymer: Antimicrobial properties on gram-positive, gram-negative, and fungal strains based on MIC, MBC, and MFC value. The results of catalytic and biological studies proved that nanoparticles have unique properties attributed to their structure and synthesis method. [ABSTRACT FROM AUTHOR]

Air pollution is known as one of the most important causes of death in the whole world. Therefore, pollution reduction to achieve clean air was noticed by everyone. This way, using nanotechnology to control air and monitor is a novel approach. This paper investigates the effect of the number of graphene nano-pores on the SiO 2 separation from the H 2 O vapour in the presence of an external electric field with the magnitude of 0.01 V/Å using the molecular dynamics (MD) method. The electric field affects the charged particles and causes disturbance in the structure. It also prevents SiO 2 nanoparticles from passing through the graphene nanosheet. Also, the presence of carbon nanosheets acts as a membrane and affects the diffusion of water in the nanostructure. So, the results show that in the presence of a nano-pore, the number of H 2 O molecules reaches to 496 and 568 in reservoirs 2 and 3. Also, the number of SiO 2 nanoparticles reaches 10 and 4 in reservoirs 2 and 3. This shows that in reservoirs 2 and 3, about 80% and 60% of the SiO 2 nanoparticles are separated. As mentioned before, the electric field prevents the passage of SiO 2 nanoparticles through the graphene nanosheet. As the number of graphene nano-pores increases by 2, 3, 4, and 5, the number of passing water molecules increases. Considering that the number of graphene nano-pores has increased and the movement path of particles has increased, the number of passing particles almost increases. However, the electric field prevents the passage of SiO 2 nanoparticles. According to the results, the suggested setup can be employed for designing highly efficient nanostructured membranes for air purification and monitoring. [Display omitted] [ABSTRACT FROM AUTHOR]

[Display omitted] • This study investigates the effect of different nanoparticles on methyl ester-biodiesel fuel's combustion performance. • The following investigated the effects of different volume fractions of CuO nanoparticles. • This research used the MD simulation and the LAMMPS software package. • Heat flux reaches to 4448.89 W/m2 in the presence of 10% CuO nanoparticles. • It is expected that by optimizing this process, the combustion performance of fuels will be improved. Today, the problems, such as the environmental pollution caused by the consumption of fossil fuels, which have disrupted the ecological conditions and created environmental risks, as well as the limited reserves of fossil fuels, have caused countries worldwide to pay more attention to this type of energy. Biofuels are a type of fuel obtained from biomass sources. Biodiesel is one of the fuels produced from natural and renewable sources, which does not harm the environment. On the other hand, the presence of nanoparticles in alternative fuels is particularly important because adding nanoparticles reduces the ignition delay. This study investigated the effect of different nanoparticles, such as copper oxide (CuO) and aluminium oxide (Al 2 O 3), on methyl ester-biodiesel (as base fluid) fuel's combustion performance. The following investigated the effects of different volume fractions of CuO nanoparticles. This research used the molecular dynamics (MD) simulation, and the LAMMPS software package. The results show that CuO nanoparticles had better thermal performance than Al 2 O 3 nanoparticles. By adding Al 2 O 3 and CuO nanoparticles to the base fluid, the heat flux of the simulated nanofluid converged to a numerical value of 2410.31 W/m2 and 2410.31 W/m2, respectively. Because CuO nanoparticles show better thermal performance than Al 2 O 3 nanoparticles, the effect of the volume fractions of CuO nanoparticles on the thermal performance of the studied nanofluid was investigated. For this purpose, CuO nanoparticles with atomic ratios of 1%, 2%, 3%, 5% and 10% were added to the base fluid. The results reveal that the heat flux in atomic samples reached 4448.89 W/m2 in the presence of 10% CuO nanoparticles. It is expected that by optimizing this process, the combustion performance of fuels will be improved, fuel consumption will be optimized, and the emission of pollutants will be reduced. [ABSTRACT FROM AUTHOR]

• Investigation the thermal performance of the PCMs microcapsules with gold nanoparticles. • Using of C 2 H 5 NO, BrC 16 and PCM as microcapsules. • Importance of dimensions of structures in microcapsules to perform the heat transfer process. • Dimensions of designed structures in microcapsules to perform the heat transfer were important. • Increasing the shell thickness in these structures will reduce the heat transfer in the structures under study. This research studied the thermal performance of phase change material (PCM) microcapsules containing gold (Au) nanoparticles (NPs) in a nanochannel (NC) using molecular dynamics (MD) simulations. The MD simulation method is a reliable method for studying at micro and nano scales. In this simulation, the physical equilibrium was studied in the first stage by examining the simulated structure's kinetic and total energies. In the second stage, the thermal performance of simulated structure was surveyed. The thermal performance of structures was studied at different initial temperatures and initial pressure and the number of metal layers in NC shells. The results show that by increasing the initial temperature, the charging and discharging time, the viscosity and phase transition time decrease, and heat flux (HF) and thermal conductivity (TC) increase. Moreover, by changing the initial pressure (from 0 to 5 bar), the simulated samples' charging and discharging time, HF, and TC did not change much. This atomic behavior in the simulated samples shows that the simulated samples could operate without a drop in different initial conditions. The results indicate that by increasing the number of metal layers in the NC shells from 1 to 12, the force on fluid–structure increased, and consequently, the charging and discharging times increase to 2.54 ns and 3.40 ns. On the other hand, increasing the number of metal layers led to decreasing HF and TC of structures to 287.37 W/m2 and 1.18 W/m.K. Therefore, the dimensions of designed structures in atomic microcapsules to perform the heat transfer process were important. Increasing the shell thickness in these structures will reduce the heat transfer in the structures under study. [ABSTRACT FROM AUTHOR]

[Display omitted] • The fabrication of ZnCo 2 O 4 -ZnO NSs was expanded using Polyethylene glycol. • The catalyst's properties were specified by FT-IR, SEM, TEM, XRD, and EDS analyses. • ZnCo 2 O 4 -ZnO NSs were deployed for the adsorption and elimination of asphaltene from crude oil. An advanced and eco-friendly method for the fabrication of ZnCo 2 O 4 -ZnO nanostructures (NSs), as highly effective nanocatalyst, was expanded using Polyethylene glycol (PEG) which is a new type of fuel and stabilizer. The influence of effectual elements such as the type of PEG and its quantity on the morphological features and function of ZnCo 2 O 4 -ZnO nanocatalyst was probed. The findings showed that changing the type of PEG and its amount can effectively control the dimensions, performance, and shape of ZnCo 2 O 4 -ZnO nanoparticles. The properties of produced ZnCo 2 O 4 -ZnO NSs were probed by FTIR, XRD, TGA, and, SEM, TEM. ZnCo 2 O 4 -ZnO NSs were employed as an extremely effectual recoverable adsorbent for the adsorption and elimination of asphaltene from crude oil. The existence of heterogeneity did not stop the progress. The products were effortlessly isolated from the green media, and the catalyst was employed many times without a distinguished drop in activity and selectivity. [ABSTRACT FROM AUTHOR]