The　expandable　graphite　(EG)　modified　TiO2　nanocomposites　were　prepared　by　the　high　shear　method　using　the　TiO2　nanoparticles　(NPs)　and　EG　as　precursors,　in　which　the　amount　of　EG　doped　in　TiO2　was　10　wt.%.　Followed　by　the　impregnation　method,　adjusting　the　pH　of　the　solution　to　10,　and　using　the　electrostatic　adsorption　to　achieve　spatial　confinement,　the　Pt　elements　were　mainly　distributed　on　the　exposed　TiO2,　thus　generating　the　Pt/10EG-TiO2-　10　catalyst.　The　best　CO　oxidation　activity　with　the　excellent　resistance　to　H2O　and　SO2　was　obtained　over　the　Pt/10EG-TiO2　-10　catalyst:　CO　conversion　after　36　hr　of　the　reaction　was　ca.　85%　under　the　harsh　condition　of　10　vol.%　H2O　and　100　ppm　SO2　at　a　high　gaseous　hourly　space　velocity　(GHSV)　of　400,000　hr　-1　.　Physicochemical　properties　of　the　catalysts　were　characterized　by　various　techniques.　The　results　showed　that　the　electrostatic　adsorption,　which　riveted　the　Pt　elements　mainly　on　the　exposed　TiO2　of　the　support　surface,　reduced　the　dispersion　of　Pt　NPs　on　EG　and　achieved　the　effective　dispersion　of　Pt　NPs,　hence　significantly　improving　CO　oxidation　activity　over　the　Pt/10EG-TiO2　-10　catalyst.　The　10　wt.%　EG　doped　in　TiO2　caused　the　TiO2　support　to　form　a　more　hydrophobic　surface,　which　reduced　the　adsorption　of　H2O　and　SO2　on　the　catalyst,　greatly　inhibited　deposition　of　the　TiOSO4　and　formation　of　the　PtSO4　species　as　well　as　suppressed　the　oxidation　of　SO2,　thus　resulting　in　an　improvement　in　the　resistance　to　H2O　and　SO2　of　the　Pt/10EG-TiO2　-10　catalyst.　(c)　2024　The　Research　Center　for　Eco-Environmental　Sciences,　Chinese　Academy　of　Sciences.　Published　by　Elsevier　B.V.