A facile preparation of graphene hydrogel-supported bimetallic RuM (M: Co, Ni, Cu) nanoparticles as catalysts in the hydrogen generation from ammonia borane

Zaier I., Eroglu Z., Metin Ö.

Pure and Applied Chemistry, cilt.95, sa.6, ss.655-669, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Özet
  • Cilt numarası: 95 Sayı: 6
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1515/pac-2022-1204
  • Dergi Adı: Pure and Applied Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Analytical Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, Veterinary Science Database, DIALNET
  • Sayfa Sayıları: ss.655-669
  • Anahtar Kelimeler: Ammonia borane, bimetallic nanoparticles, graphene hydrogel, hydrogen generation, inorganic chemistry, Mary good, nanocatalyst, ruthenium, HIGHLY EFFICIENT CATALYST, HYDROLYTIC DEHYDROGENATION, RUTHENIUM NANOPARTICLES, TRANSITION, EVOLUTION
  • Atatürk Üniversitesi Adresli: Evet

Özet

The synthesis of ultrafine well-dispersed bimetallic RuM (M: Co, Ni, Cu) nanoparticles (NPs) supported on graphene hydrogel (GH) was accomplished by a novel one-pot wet-chemical protocol that comprised the hydrothermal reduction of the mixture of graphene oxide and metal precursors by ethylene glycol (EG) in a Teflon-coated stainless-steel reactor at 180 °C. In this study, for the first time, we report the synthesis of bimetallic RuM NPs anchored on GH during the hydrothermal production of GH from graphene oxide (GH-RuM) and the catalysis of the yielded GH-Ru in the hydrolysis of ammonia borane (AB). As-synthesized GH-RuM (M: Co, Ni, Cu) nanocatalysts were characterized by using many advanced instrumental techniques including TEM, XRD, XPS, and ICP-MS. The bimetallic catalysts denoted as GH-Ru20Co80, GH-Ru30Ni70 and GH-Ru10Cu90 exhibited much higher catalytic activity compared to their Ru, Co, Ni and Cu monometallic counterparts in the hydrolytic dehydrogenation of AB. The catalytic performance of as-prepared NPs in terms of hydrogen generation rate (HGR) was achieved in the order of RuCo > RuNi > RuCu and the highest HGR calculated for the catalyst GH-Ru20Co80 reached 8911.5 mL H2 gcat-1 min-1 at room temperature with an activation energy of 52.5 kJ mol-1.