Mesoporous NiO nanomagnets as catalysts and separators of chemical agents

Mohamed Khairy, Sherif A. El-Safty, Mohamed Ismael, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    The development of a sustainable catalyst could potentially provide a long-term solution to industrial processes, especial those in the chemical industry, that require the production of a large quantity of raw materials manufactured from renewable resources. Therefore, establishing a proper design for a highly efficient and long-term reusable catalyst is one of the crucial environmental issues facing humanity. In this study, we developed a simple control for hierarchal mesoporous nickel oxide (NiO) nanomagnets (NMs) with flower- and sphere-like morphology and large mesocage cavities. In the fabrication of super-nanostructure NiO, features that were affected by the shape, surface, and size of particles exhibit high catalytic activities of chemical agents, such as o-aminophenol. Our findings shows that the NiO NM with flower-like morphology NFs has higher catalytic activity toward the oxidation of organic contaminates than that of nanospheres NSs or even other magnetic nanoparticles (NPs) such as Fe 3O 4 NPs. Furthermore, the NiO NMs are capable of the high-gradient magnetic separation of organic contaminants from aquatic life with excellent reusability even after several cycles, which may help in wastewater management and supply. To understand the effectiveness of NiO NM functionalities in terms of hierarchical mesocage parameters, as well as in terms of shape- and size-morphologies in such chemical reactions, surface interaction and magnetic separation with chemical agents and theoretical calculations were performed.

    Original languageEnglish
    Pages (from-to)1-10
    Number of pages10
    JournalApplied Catalysis B: Environmental
    Volume127
    DOIs
    Publication statusPublished - 2012 Oct 30

    Fingerprint

    Nickel oxide
    Separators
    nickel
    catalyst
    oxide
    Catalysts
    Magnetic separation
    Catalyst activity
    flower
    Nanoparticles
    Nanospheres
    chemical industry
    renewable resource
    Reusability
    Chemical industry
    environmental issue
    chemical reaction
    Chemical reactions
    Nanostructures
    Raw materials

    Keywords

    • Chemical oxidation
    • Mesoporous
    • Nanomagnet
    • Nickel oxide
    • Organic pollutants

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology
    • Environmental Science(all)

    Cite this

    Mesoporous NiO nanomagnets as catalysts and separators of chemical agents. / Khairy, Mohamed; El-Safty, Sherif A.; Ismael, Mohamed; Kawarada, Hiroshi.

    In: Applied Catalysis B: Environmental, Vol. 127, 30.10.2012, p. 1-10.

    Research output: Contribution to journalArticle

    Khairy, Mohamed ; El-Safty, Sherif A. ; Ismael, Mohamed ; Kawarada, Hiroshi. / Mesoporous NiO nanomagnets as catalysts and separators of chemical agents. In: Applied Catalysis B: Environmental. 2012 ; Vol. 127. pp. 1-10.
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