@article{42ccc0fb64544b01bc45ea68a678391a,
title = "Gold Nanoparticles Supported on Nb2O5 for Low-Temperature CO Oxidation and as Cathode Materials for Li-ion Batteries",
abstract = "We prepared a series of Nb2O5 polymorphs by the sol-gel method and the sol-gel hydrothermal method. Gold nanoparticles supported on Nb2O5 were prepared by solid grinding method. Au on pseudohexagonal (TT-phase) Nb2O5 containing an amorphous phase exhibited higher catalytic activity for CO oxidation than did other Au/Nb2O5 polymorphs. For the electrochemical properties for cathode materials of Li-ion batteries, Nb2O5 (TT) exhibited high capacity of 208 mA h g-1, and the deposition of Au onto Nb2O5 (TT) improved the capacity to 232 mA h g-1. Capacity and CO oxidation activity were related; the higher the catalytic activity Au/Nb2O5 shows, the higher is the discharging capacity. From the characterization results, Nb2O5 (TT) contains oxygen vacancies (Nb4+ sites), and the oxygen vacancies of Nb2O5 (TT) would play an important role for CO oxidation and the performance for Li-ion batteries.",
keywords = "CO oxidation, Gold nanoparticles, Li-ion batteries, niobium oxide",
author = "Dien, {Luong Xuan} and Truong, {Quang Duc} and Toru Murayama and Chinh, {Huynh Dang} and Ayako Taketoshi and Itaru Honma and Masatake Haruta and Tamao Ishida",
note = "Funding Information: This research work was financially supported by Tokyo Metropolitan Government , the National Foundation for Science & Technology Development (NAFOSTED) (grant funded by Vietnam Ministry of Science and Technology , Grant No. 104.05-2017.26 ), the Japan Society for Promotion of Science (JSPS, Grant No. PU15903 ), Nippon Sheet Glass Foundation (Research Grant 2018), and Hanoi University of Science and Technology (Grant No. T2017-PC-022 ). This work partly supported by JSPS and NSFC under the Joint Research Program (JRP with NSFC). We are grateful to Mr. T. Sakurai for elemental analyses and Mr. E. Watanabe for helping HAADF-STEM observations at TMU. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = aug,
day = "5",
doi = "10.1016/j.apcata.2020.117747",
language = "English",
volume = "603",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
}