An oriented built-in electric field induced by cobalt surface gradient diffused doping in MgIn2S4 for enhanced photocatalytic CH4 evolution†
Abstract
A gradient cobalt-doped MgIn2S4 (MgIn2S4–Co) homojunction photocatalyst was reported, creating an oriented built-in electric field for efficient extraction of photogenerated carriers from the inside to the surface of the photocatalyst. The MgIn2S4–Co photocatalysts showed remarkably enhanced photocatalytic CO2 reduction activity compared with pristine MgIn2S4.