Point University

Iron oxide nanoparticles (α-Fe₂O₃ NP) have vast applications worldwide in different fields due to their antimicrobial, antioxidant and antibacterial properties.Now these nanoparticles gained much attention as a catalyst.The conventional methods used for the synthesis of nanoparticles involved the use of chems. that are harmful to both human beings and the environment.These days several works had been done on plant-based synthesis of Fe NPs.These methods are economical, safe and eco-friendly.In this work, Calotropis procera latex was used for the synthesis of iron oxide nanoparticles.Calotropis procera commonly known as Akra or Akanal.The plant is a perennial shrub with medicinal and religious values but not edible.The synthesized nanoparticles were used as a heterogeneous catalyst in the transesterification of oil extracted from seeds of Calotropis procera in the synthesis of biodiesel.Our main purpose is to synthesize biodiesel from Calotropis procera seed oil and minimize the excess burden on fossil fuels.Different characterization techniques UV-visible, XRD, FTIR and FESEM were used for the synthesized nanoparticles.The size of synthesized nanoparticles is calculated using ImageJ software.Synthesized biodiesel was tested using twelve different parameters and characterizations of FTIR and GCMS were also performed.The size of the synthesized nanoparticles is found between 3 and 5 nm which act as nanocatalyst and the synthesized biodiesel possess all the parameters that are necessary for biodiesel to act as fuel.

Divalent metal ions co-doped nickel ferrites, MxM′yNi_1-x-yFe₂O₄ (x = 0.00, 0.03, and 0.05; y = 0.00, 0.03, and 0.05; M = Ca, Zn, and M′ = Mg, Mn), synthesis was proceeded through co-precipitation method.The characterization of prepared samples was conducted through XRD (particle size-6.16 to 20.5 nm), VSM (magnetic properties), FTIR (functional groups), FESEM-EDX (surface morphol.-elemental composition), UV-visible (band gap energy), and XPS (binding energy) techniques.The synthesized samples were assessed by methyl orange (MO) dye′s degradation under sunlight in batch mode.Dye removal percentage varies directly with photocatalyst dosage as well as contact time and inversely with dye′s initial concentration at neutral pH.The co-doped nickel ferrite possesses higher dye removal percentage (81.65%) than pure nickel ferrite nanoparticles (70%).The photocatalyst degradation of dye is confirmed with liquid chromatog.-mass spectrometry study through various intermediate products.The MO dye′s degradation over prepared nanoparticles followed nonlinear pseudo-second-order with R2 = 0.97267 and the Freundlich model with R2 = 0.99744 and has qmax of 22.24 mg g^-1 at ambient temperatureAfter use, the collection of prepared samples was done using an external magnetic field and their reusability makes them a potential material for environmental remediation.

A review.Iron oxides, including wustite (FeO), hematite (α-Fe2O3), maghemite (γ-Fe2O3), and magnetite (Fe3O4), are remarkable nanomaterials.Iron oxide nanoparticles (IONPs) at the nanoscale display super-paramagnetic, high surface area, and biocompatibility, making them ideal for diverse applications.Their influence on matter behavior, interaction with light, electricity, magnetism, and non-toxicity in biol. systems make them promise in biomedicine.This review covers IONPs properties, emphasizing biol., chem., and phys. synthesis methods, including doping, coating, and encapsulation.In addition, advancing green synthesis approaches for IONPs are highlighted.We explore their applications in medicine, environmental science, and pollution solutions, emphasizing their merits.Examining various IONPs and synthesis routes, we underscore their role in addressing global challenges.IONPs versatility, scalability, and eco-friendliness position them to transform research and uphold ethical standardsThis review unveils the transformative potential of Iron Oxide Nanoparticles (IONPs), emphasizing their unique attributes-biocompatibility, magnetic responsiveness, and tunable surface functionalities.IONPs are pivotal in targeted drug delivery, imaging, hyperthermia therapy, and biosensing.The comprehensive exploration spans biomedical, agricultural, antioxidant, and photocatalytic applications, showcasing IONPs versatility in advancing innovative solutions across diverse domains.Our collective efforts aim to revolutionize medical treatments, combat environmental issues, and foster a sustainable future while advocating responsible research and ethics.