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  1. Artikel: Magnetically responsive antibacterial nanocrystalline jute cellulose nanocomposites with moderate catalytic activity

    Rabbi, Mohammad Ahasanur / Rahman, Mohammad Mahbubor / Minami, Hideto / Yamashita, Nobuko / Habib, Mohammad Rowshanul / Ahmad, Hasan

    Carbohydrate polymers. 2021 Jan. 01, v. 251

    2021  

    Abstract: Nanocrystalline jute cellulose (NCJC) particles were prepared from bleached jute pulp by a modified acid hydrolysis. The surface of NCJC particles were first modified with iron oxide nanoparticles and then with Ag nanoparticles to prepare antibacterial ... ...

    Abstract Nanocrystalline jute cellulose (NCJC) particles were prepared from bleached jute pulp by a modified acid hydrolysis. The surface of NCJC particles were first modified with iron oxide nanoparticles and then with Ag nanoparticles to prepare antibacterial NCJC/Fe₃O₄/Ag nanocomposite particles. The successive structural modification of NCJC particles with Fe₃O₄ and Ag nanoparticles was confirmed. NCJC/Fe₃O₄/Ag nanocomposite particles responded well in external magnetic field. The SEM and TEM images of NCJC particles were in the nanometer range. NCJC/Fe₃O₄/Ag nanocomposite particles (0.005 mg mL⁻¹) completely degraded 20 mL of 0.1 mM congo red aqueous solution within 13 min aided by NaBH₄ reducing agent. NCJC/Fe₃O₄/Ag nanocomposite particles were moderately active against both Gram positive and Gram negative bacteria. A maximum inhibition zone of 21 mm was observed against Gram negative Shigella boydii bacteria with 60 mg/disc of nanocomposite particles. The antioxidant property of nanocomposite particles was also positive.
    Schlagwörter Shigella boydii ; acid hydrolysis ; antioxidant activity ; aqueous solutions ; catalytic activity ; cellulose ; iron oxides ; jute ; magnetic fields ; nanocomposites ; nanocrystals ; nanosilver ; pulp
    Sprache Englisch
    Erscheinungsverlauf 2021-0101
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2020.117024
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel: Magnetite incorporated amine-functional SiO2 support for bimetallic Cu-Ni alloy nanoparticles produced highly effective nanocatalyst

    Sarker, Mohammad Zakaria / Rahman, Mohammad Mahbubor / Minami, Hideto / Suzuki, Toyoko / Rahman, Mohammad Abdur / Khan, Alam / Hoque, Sheikh Manjura / Ahmad, Hasan

    Colloids and surfaces. 2022 Apr. 18,

    2022  

    Abstract: In this article, inclusion of iron oxide (Fe₃O₄) in amine functional silica (SiO₂-NH₂) support is attempted to see any improvement in catalytic property for anchored bimetallic Cu-Ni alloy nanoparticles. The Fe₃O₄-SiO₂-NH₂ support is first prepared by ... ...

    Abstract In this article, inclusion of iron oxide (Fe₃O₄) in amine functional silica (SiO₂-NH₂) support is attempted to see any improvement in catalytic property for anchored bimetallic Cu-Ni alloy nanoparticles. The Fe₃O₄-SiO₂-NH₂ support is first prepared by one-step solvothermal route. Secondly, bimetallic Cu-Ni alloy nanoparticles are generated on the Fe₃O₄-SiO₂-NH₂ support via in-situ simultaneous sorption and reduction of Cu and Ni ions. The resulting product, named as Fe₃O₄-SiO₂-NH₂/Cu-Ni nanocatalyst, contained face-centered-cubic (fcc) bimetallic Cu-Ni alloy with average crystallite size of 4.76nm and possessed strong paramagnetic character (27.76emug⁻¹). The Fe₃O₄-SiO₂-NH₂/Cu-Ni nanocatalyst showed faster reduction kinetics for the conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) compared to both unsupported Cu-Ni and supported SiO₂-NH₂/Cu-Ni nanocatalysts. The Fe₃O₄-SiO₂-NH₂/Cu-Ni nanocatalyst is recoverable magnetically and reused up to 6ᵗʰ cycle without any drop in activity, producing 100% conversion at pH 6. The reduction reaction preferably followed the pseudo-first-order kinetic rate model. Overall, the catalytic activity and recycle stability of bimetallic Cu-Ni nanocatalyst enhanced dramatically following the use of magnetic Fe₃O₄-SiO₂-NH₂ composite support. Additionally, the prepared Fe₃O₄-SiO₂-NH₂/Cu-Ni nanocatalyst possessed good application potential as antibacterial agent due to the presence of Cu-Ni.
    Schlagwörter alloy nanoparticles ; alloys ; aminophenols ; antibiotics ; catalytic activity ; crystallites ; magnetism ; magnetite ; models ; nanocatalysts ; p-nitrophenol ; pH ; silica ; sorption
    Sprache Englisch
    Erscheinungsverlauf 2022-0418
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    Anmerkung Pre-press version
    ZDB-ID 1500517-3
    ISSN 0927-7757
    ISSN 0927-7757
    DOI 10.1016/j.colsurfa.2022.129044
    Datenquelle NAL Katalog (AGRICOLA)

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  3. Artikel ; Online: Magnetically responsive antibacterial nanocrystalline jute cellulose nanocomposites with moderate catalytic activity.

    Rabbi, Mohammad Ahasanur / Rahman, Mohammad Mahbubor / Minami, Hideto / Yamashita, Nobuko / Habib, Mohammad Rowshanul / Ahmad, Hasan

    Carbohydrate polymers

    2020  Band 251, Seite(n) 117024

    Abstract: Nanocrystalline jute cellulose (NCJC) particles were prepared from bleached jute pulp by a modified acid hydrolysis. The surface of NCJC particles were first modified with iron oxide nanoparticles and then with Ag nanoparticles to prepare antibacterial ... ...

    Abstract Nanocrystalline jute cellulose (NCJC) particles were prepared from bleached jute pulp by a modified acid hydrolysis. The surface of NCJC particles were first modified with iron oxide nanoparticles and then with Ag nanoparticles to prepare antibacterial NCJC/Fe
    Mesh-Begriff(e) Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Antioxidants/chemistry ; Antioxidants/pharmacology ; Cellulose/chemistry ; Corchorus/chemistry ; Gram-Negative Bacteria/drug effects ; Magnetite Nanoparticles/chemistry ; Nanocomposites/chemistry ; Silver/pharmacology ; Staphylococcus aureus/drug effects
    Chemische Substanzen Anti-Bacterial Agents ; Antioxidants ; Magnetite Nanoparticles ; Silver (3M4G523W1G) ; Cellulose (9004-34-6)
    Sprache Englisch
    Erscheinungsdatum 2020-09-01
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2020.117024
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Ag impregnated sub-micrometer crystalline jute cellulose particles: Catalytic and antibacterial properties.

    Rabbi, Mohammad Ahasanur / Rahman, Mohammad Mahbubor / Minami, Hideto / Habib, Mohammad Rowshanul / Ahmad, Hasan

    Carbohydrate polymers

    2020  Band 233, Seite(n) 115842

    Abstract: This work discussed the preparation of Ag nanoparticles (AgNPs) and AgNPs impregnated sub-micrometer crystalline jute cellulose (SCJC) particles using a green synthetic bioreduction method. The ultimate nanocomposite particles were named as SCJC/Ag. The ... ...

    Abstract This work discussed the preparation of Ag nanoparticles (AgNPs) and AgNPs impregnated sub-micrometer crystalline jute cellulose (SCJC) particles using a green synthetic bioreduction method. The ultimate nanocomposite particles were named as SCJC/Ag. The crystalline structure of AgNPs was maintained in SCJC/Ag nanocomposte particles. The catalytic efficiency of SCJC/Ag nanocomposite particles were evaluated for the degradation of congo red (CR) and methylene blue (MB) using NaBH
    Mesh-Begriff(e) Anti-Bacterial Agents/pharmacology ; Borohydrides/chemistry ; Catalysis ; Cellulose/chemistry ; Congo Red/chemistry ; Corchorus/chemistry ; Escherichia coli/drug effects ; Metal Nanoparticles/chemistry ; Methylene Blue/chemistry ; Microbial Sensitivity Tests ; Oxidation-Reduction ; Rubiaceae/chemistry ; Shigella boydii/drug effects ; Shigella dysenteriae/drug effects ; Silver/chemistry ; Silver/pharmacology ; Staphylococcus aureus/drug effects
    Chemische Substanzen Anti-Bacterial Agents ; Borohydrides ; Silver (3M4G523W1G) ; Congo Red (3U05FHG59S) ; sodium borohydride (87L0B9CPPA) ; Cellulose (9004-34-6) ; Methylene Blue (T42P99266K)
    Sprache Englisch
    Erscheinungsdatum 2020-01-10
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2020.115842
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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