Polymer-graphene hybride decorated Pt nanoparticles as highly efficient and reusable catalyst for the dehydrogenation of dimethylamine–borane at room temperature

• Published in: International journal of hydrogen energy 2017-09, Vol.42 (36), p.23284-23291
• Main Authors: Sen, Betül, Kuzu, Sultan, Demir, Enes, Akocak, Süleyman, Sen, Fatih
• Format: Article
• Language: English
• Subjects: Dehydrocoupling; Monodispersity; One-step chemical assembly strategy; PANI-coupled rGO
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2017.05.112

Addressed herein, we report a reduced graphene oxide (rGO) nanosheet coupled with polyaniline (PANI) for platinum (Pt) nanoparticles as supporting materials. The PANI-coupled rGO (PANI@rGO) nanosheet is prepared by a simple one-step chemical assembly strategy, and Pt nanoparticles are anchored on the support of PANI@rGO through the reaction of PANI with a platinum salt. The designed PANI efficiently exposes the surface of rGO sheets and stabilizes metal nanoparticles. Consequently, the Pt@PANI-rGO catalyst exhibits good reusability, durability and high catalytic performance for dimethylamine–borane dehydrogenation reaction. The structure morphology and properties of Pt@PANI-rGO NPs were characterized by using several different techniques such as UV–Vis, XPS, TEM, XRD and HR-TEM-EDX analyses. This newly prepared catalyst can be reused again at low concentrations and temperature. They showed a high turnover frequency (42.94 h−1) and low Ea value of 15.1 ± 2 kJ/mol for DMAB dehydrocoupling in the ambient conditions. The proposed nano architecture offers a new pathway to promote the performances of rGO in various applications; moreover, this work provides a powerful and universal synthetic strategy for such an architecture. •The discovery of a new polyaniline and reduced graphene oxide hybride (PANI-rGO) as support.•Highly monodisperse Platinum Nanoparticles decorated by PANI-rGO hybride nanoclusters.•The one of the best TOF value of novel nanocatalysts for dimethylamine–borane dehydrogenation.•Thanks to the ultrasmall sizes, monodispersity and high Pt(0) % surface of novel catalyst.