Polymer-graphene hybride decorated Pt nanoparticles as highly efficient and reusable catalyst for the dehydrogenation of dimethylamine–borane at room temperature. (7th September 2017)

• Record Type: Journal Article
• Authors: Sen, Betül; Kuzu, Sultan; Demir, Enes; Akocak, Süleyman; Sen, Fatih
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 36(2017)
• Page Start: 23284
• Page End: 23291
• Publication Date: 2017-09-07
• Subjects: Dehydrocoupling -- One-step chemical assembly strategy -- Monodispersity -- PANI-coupled rGO; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.05.112
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: 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. Highlights: 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.