Silica-based monodisperse PdCo nanohybrids as highly efficient and stable nanocatalyst for hydrogen evolution reaction


Şen B., Demirkan B., LEVENT M., Şavk A., Şen F.

International Journal of Hydrogen Energy, vol.43, no.44, pp.20234-20242, 2018 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 44
  • Publication Date: 2018
  • Doi Number: 10.1016/j.ijhydene.2018.07.080
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.20234-20242
  • Keywords: Dehydrocoupling, Hydrogen, Nanohybrids, PdCo NPs, Silica
  • Uşak University Affiliated: Yes

Abstract

Addressed herein, a highly active and stable nanohybrid has been synthesized for hydrogen production. The newly prepared nanocatalysts are silica-based palladium-cobalt nanohybrid structures (PdCo@SiO2 nanohybrid) (3.82 ± 0.37 nm). The prepared nanohybrids were fully identified with the help of different analytical techniques such as UV-Vis (Ultraviolet-Visible spectroscopy), XPS (X-ray photoelectron spectroscopy), TEM (Transmission electron microscopy), XRD (X-ray diffraction) and HR-TEM (High-resolution transmission electron microscopy) analyses. This prepared nanohybrid was quite successful in the production of hydrogen from DMAB in ambient conditions (TOF: 108.27 h−1). By the way, it was observed that the DMAB was converted entirely to the product at room temperature with the help of PdCo@SiO2 nanohybrid. Moreover, monodisperse PdCo@SiO2 nanohybrid has shown outstanding reusability performance even after 4th usage in the same reaction. As a result, it can be said that the prepared nanohybrid is highly efficient, stable and durable nanocatalyst for the dehydrocoupling of dimethylamine-borane.