Catalytic performance of bimetallic PtCo supported on nanosheets MoS₂ in aqueous-phase reforming of methanol to hydrogen

Nanosheets MoS₂ with only 6 layers have been successfully synthesized by hydrothermal method and used as support to prepare a series of Pt and PtM (M=Ru, Pd, Co and Ni) bimetallic catalysts for low temperature aqueous-phase reforming of methanol (APRM) to produce hydrogen. Among those catalysts, PtCo supported on MoS₂ nanosheets catalyst exhibited the best performance, and its turnover frequency (TOF) of H₂ formation reached 37142 h^-1 at 220℃. The N₂ adsorption-desorption, TEM, H₂-TPR and XPS results showed that PtCo/MoS₂ performed the highest reduction degree, and the strong electronic interaction between Pt and MoS₂ enhanced the adsorption and activation of methanol on the electron-deficient Pt, thus promoted the methanol reforming.