Preparation and characterization of Ni-M (M: Ru, Rh, Pd) nanoclusters as efficient catalysts for hydrogen evolution from ammonia borane methanolysis

Tunç N., Rakap M.

RENEWABLE ENERGY, vol.155, pp.1222-1230, 2020 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 155
  • Publication Date: 2020
  • Doi Number: 10.1016/j.renene.2020.04.079
  • Journal Name: RENEWABLE ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Index Islamicus, INSPEC, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.1222-1230
  • Van Yüzüncü Yıl University Affiliated: Yes


Here, first-time preparation, characterization, and catalytic use of hydroxyapatite-supported nickelbased
Ni-M (NiRu@HAP, NiRh@HAP, NiPd@HAP) nanoclusters in hydrogen evolution from methanolysis
of ammonia borane is reported. Ni-M nanoclusters have been in-situ formed by reduction of
hydroxyapatite-supported corresponding metal ions during methanolysis reaction of ammonia borane.
The hydroxyapatite-supported Ni-M nanoclusters are isolated as stable solid materials to be characterized
by advanced analytical techniques of ICP-OES, TEM, XPS, and XRD. They are found to be isolable,
highly redispersible and reusable nanocatalysts for hydrogen evolution from ammonia borane methanolysis
under ambient conditions. Ni20Ru80@HAP, Ni38Rh62@HAP, and Ni20Pd80@HAP nanoclusters have
TOF values of 58.9, 120.3, and 25.2 min1, respectively, in the methanolysis of ammonia borane at
25 ± 0.1 C. Their apparent activation energy (Ea) values for the same reaction are calculated to be 65.9,
66.8, and 58.1 kJ/mol, respectively, for Ni20Ru80@HAP, Ni38Rh62@HAP, and Ni20Pd80@HAP nanoclusters.