Simultaneous Synthesis of One-and Two-Dimensional Gold Nanostructures/Reduced Graphene Oxide Composites in the Redox-Active Ionic Liquid/Water Interfacial System

Abstract

The full-text file will be made open to the public on

Au Nanofiber/CNT 1D/1D Composites Formed Via Redox Reaction at the Ionic Liquid/Water Interface

“…The Au nanofiber formation at the IL/W interface was carried out by the coupling of electron transfer (ET), that is Au reduction by a reducing agent, and ion transfer (IT) which compensated for the charge unbalance caused by ET . IT of AuCl 4 – has been confirmed as a pivotal process to form the Au nanostructures. ,, In order to investigate the effect of IT on the composite, we performed another experiment. In this experiment, Li salt of C 4 C 4 N – , which is a more hydrophobic anion than AuCl 4 – and is more easily transferred to IL, was added into W at 30 mM to prevent AuCl 4 – transfer via IT from W to IL …”

“…25 IT of AuCl 4 − has been confirmed as a pivotal process to form the Au nanostructures. 27,31,44 In order to investigate the effect of IT on the composite, we performed another experiment. In this experiment, Li salt of C 4 C 4 N − , which is a more hydrophobic anion than AuCl 4 − and is more easily transferred to IL, was added into W at 30 mM to prevent AuCl 4 − transfer via IT from W to IL.…”

“…The success in the IL/W interfacial method to prepare Au nanofibers motivated us to fabricate composites of Au nanofibers and CNTs. We recently succeeded in producing 1D/2D composites of Au nanofibers and reduced graphene oxides at the IL/W interface, utilizing the physical adsorption of the latter on the interface. In the present study, we fabricated composites of Au and CNTs by adsorbing CNTs at the IL/W interface by utilizing the fact that CNTs can be physically adsorbed at the liquid–liquid interface. , As a result, 1D/1D composites of Au nanofibers and CNTs were prepared.…”

Potential dependence of the ionic structure at the ionic liquid/water interface studied using MD simulation

“…Ionic liquids (ILs) that are composed of hydrophobic ions are immiscible with water and form an IL-water (W) two-phase system. The IL-W two-phase system has promising applications in solvent extraction of ions, [1][2][3][4][5][6][7][8][9] nanomaterials synthesis, [10][11][12][13][14][15][16][17][18] ion-exchange chromatography 19 and also in electrochemical devices such as ionselective electrode, 20 lithium-ion battery, 21 and fuel cell. 22 In these applications the IL|W interface is an electrochemical reaction site where the ion and electron transfer reactions occur, and therefore, it is important to clarify the structure at the IL|W interface and its dependence on the interfacial potential difference.…”

Potential Dependence of the Ionic Structure at the Ionic Liquid/water Interface Studied Using MD Simulation

“…Ionic liquids (ILs) that are composed of hydrophobic ions are immiscible with water and form an IL-water (W) two-phase system. The IL-W two-phase system has promising applications in solvent extraction of ions, [1][2][3][4][5][6][7][8][9] nanomaterials synthesis, [10][11][12][13][14][15][16][17][18] and also in electrochemical devices such as ion-selective electrode, 19 lithium-ion battery, 20 and fuel cell. 21 In these applications the IL|W interface is an electrochemical reaction site where the ion and electron transfer reactions occur, and therefore, it is important to clarify the structure at the IL|W interface and its dependence on the interfacial potential difference.…”