Polypyrrole-multi walled carbon nanotube hybrid material supported Pt NPs for hydrogen evolution from the hydrolysis of MeAB at mild conditions.

ABSTRACT: Herein, we report a facile method for the preparation of polypyrrole-multi walled carbon nanotube hybrid material including Pt nanoparticles (Pt@PPy-MWCNT NPs) and the use in methylamine borane (MeAB) for hydrolysis reaction at mild conditions. The prepared catalyst of Pt@PPy-MWCNT NPs was characterized by some advanced analytical methods. The catalytic experiments showed the Pt@PPy-MWCNT NPs can catalyze MeAB in aquatic solution with high catalytical performance at mild conditions. The reaction rate of catalytic hydrolysis with Pt@PPy-MWCNT NPs was found to be -d[CH₃NH₂BH₃]/dt?=?+?d[H₂]/3dt?=?k_obs[Pt@PPy-MWCNT]^1.19 [MeAB]^0.88. The TOF value for the hydrolysis of MeAB catalyzed with Pt@PPy-MWCNT NPs was detected to be 10234.2 1/h (170.57 1/min) which is very high compared with TOF values found for other catalysts. Enthalpy, entropy and activation energy for the hydrolysis of MeAB were calculated to be 31.57?kJ?mol^-1, -119.97?J?mol^-1 K and 34.27?kJ?mol^-1, respectively.

SUBMITTER: Karatas Y 

PROVIDER: S-EPMC6898010 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature