Facile Synthesis of Three-Dimensional Pt-TiO2 Nano-networks: A Highly Active Catalyst for the Hydrolytic Dehydrogenation of Ammonia-Borane

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Khalily M. A., Eren H., Akbayrak S., Susapto H. H., BIYIKLI N., ÖZKAR S., ...More

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, vol.55, no.40, pp.12257-12261, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 40
  • Publication Date: 2016
  • Doi Number: 10.1002/anie.201605577
  • Journal Name: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.12257-12261
  • Keywords: 3D nanomaterials, ammonia-borane, atomic layer deposition, hydrogen generation, peptide aerogels, ATOMIC LAYER DEPOSITION, METAL-ORGANIC FRAMEWORK, HIGH-PERFORMANCE, PALLADIUM AEROGELS, OXYGEN REDUCTION, NANOPARTICLES, ELECTROCATALYSTS, DURABILITY, OXIDATION, HYDROGEN
  • Middle East Technical University Affiliated: Yes

Abstract

Three-dimensional (3D) porous metal and metal oxide nanostructures have received considerable interest because organization of inorganic materials into 3D nanomaterials holds extraordinary properties such as low density, high porosity, and high surface area. Supramolecular self-assembled peptide nanostructures were exploited as an organic template for catalytic 3D Pt-TiO2 nano-network fabrication. A 3D peptide nanofiber aerogel was conformally coated with TiO2 by atomic layer deposition (ALD) with angstrom-level thickness precision. The 3D peptide-TiO2 nano-network was further decorated with highly monodisperse Pt nanoparticles by using ozone-assisted ALD. The 3D TiO2 nano-network decorated with Pt nanoparticles shows superior catalytic activity in hydrolysis of ammonia-borane, generating three equivalents of H-2.