Abstract

Layered metal sulfides of CuGa(2)In(3)S(8) with a 1.91-eV band gap and AgGa(2)In(3)S(8) with a 2.27-eV band gap gave 15% apparent quantum yields at 560 nm and 460 nm for H(2) evolution from aqueous solutions containing K(2)SO(3) and Na(2)S as electron donors with assistance of Rh cocatalysts, respectively, and Rh/CuGa(2)In(3)S(8) responded to 680 nm for the photocatalytic H(2) evolution.

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