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Synthesis and Characterization of MoS2 Nanoparticle Embedded Mesoporous Nickel and Cobalt modified Manganese Oxide for Environmental Catalysis Application
2nd International Conferences on Nanotechnology & Chemistry
April 06-07, 2022 | Webinar
Jothi Ramalingam Rajabathar
Assistant Professor, Department of Chemistry, Madras, India
Scientific Tracks Abstracts : J Pharm Chem Chem Sci
Abstract:
Layered Transition metal chalcogenide compound’s such as Molybdenum sulfide (MoS2) deposition into mesoporous-MnO2-graphene matric could provide hybrid nanocomposite structure [1-2]. Multivalent MnO2 is an attractive catalytic material due to low-cost precursor material, and the incorporation of a suitable metal ion into the mesoporous matrix could be the potential catalyst for the sorption of large dye molecules [3, 4]. The various transition metal ions doped in MnO2 matrix has already been exploited for volatile organic compound degradation and persistent organic pollutant removal in aqueous medium [5-8]. Non-ionic surfactant assisted method is recently developed to form the mesoporous metal ion modified MnO2 is an effective composite for catalytic sorption of a nitrophenol molecules and its low-cost precursor makes it attractive for large-scale production. The above-mentioned deposition has carried out by assistance of ultrasonication method. X-ray diffraction pattern confirms the formation of α-phase of MnO2 with tunnel structure formation with Nickel and cobalt insertion. The thermal stability and structure-property relationship of prepared catalysts have studied by various physico-chemical methods. Results and Discussion : The as-prepared nanocomposite crystalline phase consists of mesoporous Mn2O3 phase as the predominant. The d-space values of Ni-Co-MnO2nanocomposite coincide very well with the meso- porous Mn2O3 (ICSD-44-0141 and JCPDS-24-0508) and hkl plane values are indexed with respect to ICSD-44- 0141. From the Fig. 2A, clearly confirms that the insitu doping of Nickel and Cobalt ion are altered the crystalline nature of the pristine mesoporous manganese oxide. In the case of Fig. 2A (a) more diffraction peak is obtained compared to Ni-Co-doped manganese oxide. The broad- ening in diffraction peaks of Ni- Co-doped MnO2 due to reduced Nano particle size. Fig. 2B (a-d) is shown the different amount of MoS2 deposition on fixed amount of Ni-Co-MnO2. SEM images of NiCo-MnO2 are shown in Fig. 1(a-b) and it forms the tiny fibrous Nano disk with flower-like morphology with spherically aggregated particles. Needle-like metallic-rich shapes are obtained for MoS2 nanoparticle deposition on the nanotubes of MnO2, and they are inserted in the Nano sheet structures of the mesoporous MnO2 (Fig. 1c and d). Molybdenum sulfide Nano needle is more flexibly inserted into the flaky nanodisk sheets. It is dispersed/aggregated together aggregated square and rectangle particle of Ni-CoMnO2, owing to the ultra-sonication process, followed by thermal treatment.
Biography:
Prof. Jothi Ramaliingam, expertise in the field of Nanocomposite/smart materials development from waste organics and polymers. Working in supercapcitor device development and pollution removal study.
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