@article{f3f263113f454f259f924f76e4afbeaf,
title = "Preparation of copper nanoparticles for metal-metal bonding by aqueous reduction with D-glucose and PVP",
abstract = "Copper nanoparticles (CuNPs) for metal-metal bonding were prepared by aqueous reduction with D-glucose and polyvinylpirrolidone (PVP). Increasing the cupric concentration in the range 0.1–1.0 M resulted in a progressive increase in CuNPs size from 30 nm to 200 nm. Fourier-transform infrared spectroscopy (FTIR) revealed as the PVP groups responsible for capping were C–N and C[dbnd]O at low cupric concentration and only C[dbnd]O at higher concentration. X-ray absorption fine structure (XAFS) revealed as the reduction occurred in two steps, with a fast reduction of CuO to Cu2O and a slower reduction of Cu2O. The reaction kinetics was modeled as a series of two irreversible first order reactions based on XAFS results. LC-MS highlighted as D-glucose oxidized to gluconate, glycerate, glycolate and oxalate. Increasing the D-glucose concentration did not affect the kinetics but resulted in smaller CuNPs. The electrical resistivity of the CuNPs material sintered at 300 °C was 36 µΩ cm.",
keywords = "Copper nanoparticles, D-glucose, Kinetics, PVP, Sintering, XAFS",
author = "Giuseppe Granata and Aina Onoguchi and Chiharu Tokoro",
note = "Funding Information: This work was financially supported by MITSUBISHI MATERIAL CORPORATION (Japan). The synchrotron radiation experiments were performed using a BL5S1 beamline courtesy of the Aichi Synchrotron Radiation Center, Aichi Science & Technology Foundation, Aichi, Japan (Proposal No. 2018P4103). Part of this work was performed as a component of the activities of the Research Institute of the Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University. Funding Information: This work was financially supported by MITSUBISHI MATERIAL CORPORATION (Japan) . The synchrotron radiation experiments were performed using a BL5S1 beamline courtesy of the Aichi Synchrotron Radiation Center, Aichi Science & Technology Foundation, Aichi, Japan (Proposal No. 2018P4103 ). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",
year = "2019",
month = dec,
day = "14",
doi = "10.1016/j.ces.2019.115210",
language = "English",
volume = "209",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier BV",
}