Single step synthesis of metallic nanoparticles using dihydroxyl functionalized ionic liquids as reductive agent

Walid Darwich, Christian Gedig, Hassan Srour, Catherine C. Santini, M. H. G. Prechtl

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

In the last few years, ionic liquids (ILs) have revealed their broad versatility for application towards the synthesis of shape and size controlled nanoscale metal catalysts, respectively metal(0) nanoparticles (MNPs) in the absence of additive ligand. ILs play the role of solvent and ligand. In our work, we depict the synthesis of M-NPs (M = Cu, Ag, Ni, Ru) using dihydroxyl functionalized imidazolium ILs 1-(2,3-dihydroxypropyl)-2,3-dimethylimidazolium bis(trifluoromethanesulfonimide) [C1C1(EG)Im][NTf2] as solvent, stabilizer and reductive agent simultaneously. In this IL the formation of stable dispersion of NPs from silver and copper salts in the absence of any reducing agent has been observed. The comparison of the C-13-NMR, and IR data of pure IL and IL-NP (Cu and Ag) suspensions proved the oxidation of the hydroxyl group to a carbonyl group, confirming that the dihydroxyl function of the IL acted as the reducing agent. This oxido-reduction depends on the nature of the metal. No reaction occurred with Ni-II and Ru-0 precursors, and with Ru-II and Ni-0 salts the formation of M-NPs is due to the activation of the acidic protons on the imidazolium ring. The Ru-NPs were then further evaluated for selective partial hydrogenation, here we observed good selectivities for alpha,beta-unsaturated compounds such as cyclohexenone and cinnamic aldehyde, which can be converted exclusively into the unsaturated alcohols or saturated alcohols.
OriginalsprogEngelsk
TidsskriftRSC Advances
Vol/bind3
Udgave nummer43
Sider (fra-til)20324-20331
Antal sider8
ISSN2046-2069
DOI
StatusUdgivet - 2013
Udgivet eksterntJa

Emneord

    Citer dette

    Darwich, Walid ; Gedig, Christian ; Srour, Hassan ; Santini, Catherine C. ; Prechtl, M. H. G. / Single step synthesis of metallic nanoparticles using dihydroxyl functionalized ionic liquids as reductive agent. I: RSC Advances. 2013 ; Bind 3, Nr. 43. s. 20324-20331.
    @article{6adfdea12a064dcda17e3ad9bacce578,
    title = "Single step synthesis of metallic nanoparticles using dihydroxyl functionalized ionic liquids as reductive agent",
    abstract = "In the last few years, ionic liquids (ILs) have revealed their broad versatility for application towards the synthesis of shape and size controlled nanoscale metal catalysts, respectively metal(0) nanoparticles (MNPs) in the absence of additive ligand. ILs play the role of solvent and ligand. In our work, we depict the synthesis of M-NPs (M = Cu, Ag, Ni, Ru) using dihydroxyl functionalized imidazolium ILs 1-(2,3-dihydroxypropyl)-2,3-dimethylimidazolium bis(trifluoromethanesulfonimide) [C1C1(EG)Im][NTf2] as solvent, stabilizer and reductive agent simultaneously. In this IL the formation of stable dispersion of NPs from silver and copper salts in the absence of any reducing agent has been observed. The comparison of the C-13-NMR, and IR data of pure IL and IL-NP (Cu and Ag) suspensions proved the oxidation of the hydroxyl group to a carbonyl group, confirming that the dihydroxyl function of the IL acted as the reducing agent. This oxido-reduction depends on the nature of the metal. No reaction occurred with Ni-II and Ru-0 precursors, and with Ru-II and Ni-0 salts the formation of M-NPs is due to the activation of the acidic protons on the imidazolium ring. The Ru-NPs were then further evaluated for selective partial hydrogenation, here we observed good selectivities for alpha,beta-unsaturated compounds such as cyclohexenone and cinnamic aldehyde, which can be converted exclusively into the unsaturated alcohols or saturated alcohols.",
    keywords = "heterogeneous catalysis silver nanoparticles solvents nanocrystals oxidation clusters numbers shape Chemistry",
    author = "Walid Darwich and Christian Gedig and Hassan Srour and Santini, {Catherine C.} and Prechtl, {M. H. G.}",
    year = "2013",
    doi = "10.1039/c3ra43909g",
    language = "English",
    volume = "3",
    pages = "20324--20331",
    journal = "RSC Advances",
    issn = "2046-2069",
    publisher = "RSC Publishing",
    number = "43",

    }

    Single step synthesis of metallic nanoparticles using dihydroxyl functionalized ionic liquids as reductive agent. / Darwich, Walid; Gedig, Christian; Srour, Hassan; Santini, Catherine C.; Prechtl, M. H. G.

    I: RSC Advances, Bind 3, Nr. 43, 2013, s. 20324-20331.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - Single step synthesis of metallic nanoparticles using dihydroxyl functionalized ionic liquids as reductive agent

    AU - Darwich, Walid

    AU - Gedig, Christian

    AU - Srour, Hassan

    AU - Santini, Catherine C.

    AU - Prechtl, M. H. G.

    PY - 2013

    Y1 - 2013

    N2 - In the last few years, ionic liquids (ILs) have revealed their broad versatility for application towards the synthesis of shape and size controlled nanoscale metal catalysts, respectively metal(0) nanoparticles (MNPs) in the absence of additive ligand. ILs play the role of solvent and ligand. In our work, we depict the synthesis of M-NPs (M = Cu, Ag, Ni, Ru) using dihydroxyl functionalized imidazolium ILs 1-(2,3-dihydroxypropyl)-2,3-dimethylimidazolium bis(trifluoromethanesulfonimide) [C1C1(EG)Im][NTf2] as solvent, stabilizer and reductive agent simultaneously. In this IL the formation of stable dispersion of NPs from silver and copper salts in the absence of any reducing agent has been observed. The comparison of the C-13-NMR, and IR data of pure IL and IL-NP (Cu and Ag) suspensions proved the oxidation of the hydroxyl group to a carbonyl group, confirming that the dihydroxyl function of the IL acted as the reducing agent. This oxido-reduction depends on the nature of the metal. No reaction occurred with Ni-II and Ru-0 precursors, and with Ru-II and Ni-0 salts the formation of M-NPs is due to the activation of the acidic protons on the imidazolium ring. The Ru-NPs were then further evaluated for selective partial hydrogenation, here we observed good selectivities for alpha,beta-unsaturated compounds such as cyclohexenone and cinnamic aldehyde, which can be converted exclusively into the unsaturated alcohols or saturated alcohols.

    AB - In the last few years, ionic liquids (ILs) have revealed their broad versatility for application towards the synthesis of shape and size controlled nanoscale metal catalysts, respectively metal(0) nanoparticles (MNPs) in the absence of additive ligand. ILs play the role of solvent and ligand. In our work, we depict the synthesis of M-NPs (M = Cu, Ag, Ni, Ru) using dihydroxyl functionalized imidazolium ILs 1-(2,3-dihydroxypropyl)-2,3-dimethylimidazolium bis(trifluoromethanesulfonimide) [C1C1(EG)Im][NTf2] as solvent, stabilizer and reductive agent simultaneously. In this IL the formation of stable dispersion of NPs from silver and copper salts in the absence of any reducing agent has been observed. The comparison of the C-13-NMR, and IR data of pure IL and IL-NP (Cu and Ag) suspensions proved the oxidation of the hydroxyl group to a carbonyl group, confirming that the dihydroxyl function of the IL acted as the reducing agent. This oxido-reduction depends on the nature of the metal. No reaction occurred with Ni-II and Ru-0 precursors, and with Ru-II and Ni-0 salts the formation of M-NPs is due to the activation of the acidic protons on the imidazolium ring. The Ru-NPs were then further evaluated for selective partial hydrogenation, here we observed good selectivities for alpha,beta-unsaturated compounds such as cyclohexenone and cinnamic aldehyde, which can be converted exclusively into the unsaturated alcohols or saturated alcohols.

    KW - heterogeneous catalysis silver nanoparticles solvents nanocrystals oxidation clusters numbers shape Chemistry

    U2 - 10.1039/c3ra43909g

    DO - 10.1039/c3ra43909g

    M3 - Journal article

    VL - 3

    SP - 20324

    EP - 20331

    JO - RSC Advances

    JF - RSC Advances

    SN - 2046-2069

    IS - 43

    ER -