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Author: search.filters.author.Hesam KamyabSubject: search.filters.subject.Green synthesis

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    Item type:Publication,
    On the horizon of greener pathways to travel into a greener future portal: Green MXenes, environment-friendly synthesis, and their innovative applications
    (Elsevier BV, 2024-01)
    Ali Mohammad Amani
    ;
    Lobat Tayebi
    ;
    Ehsan Vafa
    ;
    Milad Abbasi
    ;
    Ahmad Vaez
    It has been determined that the exceptional characteristics of MXenes are of great interest in a variety of newly developed applications. MXenes, on the other hand, have a number of drawbacks, the most significant of which is that their general manufacturing in large-scale production requires the use of ecologically hazardous and poisonous compounds, as well as a solid-state reaction at high temperature, which is then followed by selective etching. In this regard, the manner in which MXenes are manufactured is critical to determining their final applications. Thus, it is very necessary to develop strategic ways to synthesize MXenes that are safer, greener, more ecologically friendly, and more sustainable in order to put them on the market at a competitive price. It is very necessary to assemble, review, and synthesize the most recent advancements in the green-related innovation of MXenes since there are a rising number of publications on green synthesis involving technological advances and non-toxic substances. Replacing traditional synthesis methods with green MXenes, physically based rapid generation of MAX phases, molten salt process for the green synthesis of MAX phases, nanoparticulate MAX phase based on the sol-gel process, HF etchant replacement with safer chemicals, electrochemical exfoliation, and nanobioagents can result in more environmentally friendly, efficient, and safer MXenes for future environmental, biomedicine, energy saving, catalysis, and sensors. Our primary focus is on the core synthetic procedure, the mechanism, and the overall benefits, with a particular emphasis on the MXene features that have been passed down from these green synthesis approaches. The growing uses green MXenes in the fields of environmental remediation, energy conversion and storage, and biomedicine are discussed in this article. In conclusion, the remaining obstacles and potential benefits of more environmentally friendly MXene production are reviewed.
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    Bioactive nanoparticles derived from marine brown seaweeds and their biological applications: a review
    (Springer Science and Business Media LLC, 2024-06-10)
    Juhi Puthukulangara Jaison
    ;
    Balamuralikrishnan Balasubramanian
    ;
    Jaya Gangwar
    ;
    Manikantan Pappuswamy
    ;
    Arun Meyyazhagan
    The biosynthesis of novel nanoparticles with varied morphologies, which has good implications for their biological capabilities, has attracted increasing attention in the field of nanotechnology. Bioactive compounds present in the extract of fungi, bacteria, plants and algae are responsible for nanoparticle synthesis. In comparison to other biological resources, brown seaweeds can also be useful to convert metal ions to metal nanoparticles because of the presence of richer bioactive chemicals. Carbohydrates, proteins, polysaccharides, vitamins, enzymes, pigments, and secondary metabolites in brown seaweeds act as natural reducing, capping, and stabilizing agents in the nanoparticle’s synthesis. There are around 2000 species of seaweed that dominate marine resources, but only a few have been reported for nanoparticle synthesis. The presence of bioactive chemicals in the biosynthesized metal nanoparticles confers biological activity. The biosynthesized metal and non-metal nanoparticles from brown seaweeds possess different biological activities because of their different physiochemical properties. Compared with terrestrial resources, marine resources are not much explored for nanoparticle synthesis. To confirm their morphology, characterization methods are used, such as absorption spectrophotometer, X-ray diffraction, Fourier transforms infrared spectroscopy, scanning electron microscope, and transmission electron microscopy. This review attempts to include the vital role of brown seaweed in the synthesis of metal and non-metal nanoparticles, as well as the method of synthesis and biological applications such as anticancer, antibacterial, antioxidant, anti-diabetic, and other functions. Graphical abstract: (Figure presented.).