In Situ Synthesis and Photocatalytic Performance of Three Dimensional Composites CdS@DMSA-GO

CdS@DMSA-GO composites have been synthesized by introducing meso-2, 3-dimercaptosuccinic acid (DMSA) into grapheme oxide to construct three-dimensional architecture. The experimental results indicate that the temperature has an important influence on the structure and properties of the as-prepared materials. CdS@DMSA-G-100 degrees C exhibited the best adsorption ability and photocatalytic activity for the degradation of rhodamine B (RhB) and Congo Red (CR). The degradation rate reached over 96%. The radical trapping test illuminate that center dot O-2 radical was the dominant active oxygen species in the photocatalytic process.