Preparation and characterization of hydrophobic Pt-Fe catalysts with enhanced catalytic activities for interface hydrogen isotope separation

► Hydrophobic alloying and non-alloying Pt-Fe catalysts were fabricated for LPCE. ► The hydrophobic Pt and Pt-Fe catalysts had high dispersion. ► Activities of the non-alloying Pt-Fe catalysts with appropriate Fe/Pt ratios were enhanced. ► Activity of the alloying Pt3Fe1 catalyst was decreased.