CoRu catalyst supported on poly (sodium 4-styrenesulfonate) coated graphite nanoplatelets for improved hydrogen generation from sodium borohydride in alkine solution

Yanchun Zhao

Open Conference Systems, International Conference on Electrochemical Energy and Technology

Yanchun Zhao

Last modified: 2014-10-08

Abstract

CoRu catalyst supported on poly (sodium 4-styrenesulfonate) coated graphite nanoplatelets (CoRu/PSS-GNs) was successfully prepared and used for hydrogen generation from sodium borohydride in alkine solution. The properties and morphologies of PSS-GNs supports and CoRu/PSS-GNs catalyst were characterized by SEM-EDS, XRD, FT-IR and TGA, which shows the PSS-GNs posses -SO₃Na organic functional groups and CoRu can be effectively load (20.0 wt%). The maximum rate of hydrogen evolution could reach to 4427.3 mL·min^-1·g^-1_catin NaBH₄(200mM, containing 0.2wt% NaOH) solution. In comparison to the CoRu/GNs and CoRu/GTO catalysts, the catalytic efficiency of CoRu/PSS-GNs catalyst is almost three times high than them. The E_avalue of CoRu/PSS-GNs is 50.03 kJ·mol^-1, besides a very good dispersion in aqueous solution, which can be placed for several mouths without precipitation. It is suitable in practical application for CoRu/PSS-GNs catalyst according to its smaller activation energy and good hydrophilicity.

Keywords

CoRu catalyst, PSS-GNs, Hydrogen generation, NaBH4

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