The efficient removal of arsenic from wastewater is still a challenge. In this paper, a heterojunction consisting of in-situ carbon-doped TiO(2) and nitrogen deficiency g-C(3)N(4) (C/TiO(2)@ND-C(3)N(4)) has been constructed, which can completely oxidize As(III) (10,000μg/L, 40mL) to As(V) within 12min under visible light and simultaneously adsorb total As (95.0%) with the pseudo-secondary kinetic equation, superior than in-situ carbon-doped TiO(2) (75.0%) and nitrogen deficiency g-C(3)N(4) (50.5%). The good photocatalytic oxidation and adsorpt...