Preparation and characterization of amine-terminated delafossite type oxide, CuMnO2-NH2, supported Pd (0) nanoparticles for the H-2 generation from the methanolysis of ammonia-borane

Karataş ., Zengin A., Gülcan M.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.47, no.36, pp.16036-16046, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 36
  • Publication Date: 2022
  • Doi Number: 10.1016/j.ijhydene.2022.03.098
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chemical Abstracts Core, Communication Abstracts, Environment Index, INSPEC
  • Page Numbers: pp.16036-16046
  • Keywords: Ammonia-borane, Delafossite, Hydrogen, Methanolysis, Nanoparticles, Palladium, METAL-ORGANIC FRAMEWORK, HYDROGEN GENERATION, RHODIUM(0) NANOPARTICLES, HYDROTHERMAL SYNTHESIS, EFFICIENT CATALYSTS, ROOM-TEMPERATURE, FORMIC-ACID, DEHYDROGENATION, GRAPHENE, HYDROLYSIS
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

Among the cuprous metal oxides of the delafossite type, which are generally formulated as CuMO2 (M = Al, Cr, Fe, Ga, Mn), the most promising is the (CuMnO2) structures. CuMnO2 material, named crednerite, is a very interesting delafossite derivative with potential applications in many fields, mainly catalyst, photoelectrochemical cells and multiferroic tools. Herein, we report fabrication, characterization, and application of amine-terminated CuMnO2 (CuMnO2-NH2) supported palladium nanoparticles (Pd/CuMnO2-NH2) as highly efficient and recyclable catalysts for the hydrogen production from the methanolysis of ammonia-borane (AB). The results of characterization using P-XRD, TEM, HRTEM, TEM-EDX, XPS, SEM, SEM-elemental mapping, and ICP-OES disclose that Pd (0) nanoparticles were well spread on the surface of CuMnO2-NH2 with a mean particle size of 3.91 +/- 0.33 nm. Pd/CuMnO2-NH2 shows high catalytic activity in the methanolysis of AB with an initial turnover frequency of 146.68 min(-1) at 25 +/- 0.1 degrees C which is one of the highest values ever reported for AB methanolysis in the literature. Besides, the extreme stability of Pd/CuMnO2-NH2 takes it a recyclable heterogeneous catalyst in this catalytic conversion. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.