Abstract
As an efficient and sustainable technology, photocatalysis driven by visible light has made great contributions to the removal of heavy metals from environment. In this work, a series of Cd3(TMT)2/CdS heterojunction composite photocatalysts were prepared by self-formation of CdS nanoparticles using an octahedral coordination polymer Cd3(C3N3S3)2 (denoted as Cd3(TMT)2) as a precursor. The photocatalytic performance of Cd3(TMT)2/CdS heterojunction composites for Cr(VI) has been significantly improved under visible light irradiation owing to effective separation and migration of photoexcited charge carriers. Moreover, Cd3(TMT)2/CdS composites exhibited remarkable photocatalytic reduction performance of Cr(VI) solution with high concentration. This photocatalyst provides a novel route in the photoreduction of Cr(VI).
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