The　running　of　environmental　purification　usually　employs　massive　consumption　of　energy,　and　it　is　of　significant　scientific　importance　and　real　impact　to　reduce　the　energy　cost　in　environmental　treatments.　In　particular,　it　is　urgently　required　to　minimalize　the　energy　cost　of　the　catalytic　oxidation　of　gaseous　pollutants　represented　by　volatile　organic　compounds　(VOCs).　Herein,　we　develop　a　rapid　in-situ　Joule-heating　configuration　to　drive　the　catalytic　VOCs　oxidation　with　ultra-low　energy　consumption.　As　a　prototypical　illustration,　atomically　dispersed　Pt/CeO2　catalyst　was　decorated　on　conductive　Nickle　foam　substrate　to　act　as　both　catalytic　and　electric　components　with　minimal　pressure　drop　and　high　compatibility.　The　catalytic　system　exhibited　100%　conversion　toward　toluene　(1000　ppm,　33　mL　min−1)　with　an　ultralow　input　power　of　6.5　W,　which　was　87%　lower　than　that　of　a　conventional　heating　furnace.　Moreover,　the　long-term　stability,　high　universality　for　various　VOCs,　and　responsiveness　for　real-time　changing　components　were　also　demonstrated.　The　outstanding　electro-thermal　properties　of　the　system　can　be　extended　to　more　gaseous　catalytic　reactions　with　much　lower　energy　consumption.　©　2022　Elsevier　Ltd