ZnS and CdS, as the important wide band gap II–
VI group semiconductor materials, are commercially
used as the phosphor in solar energy conversion,
nonlinear optics, photoelectrochemical cells, and
heterogeneous photocatalysis (Yao et al. 2007; Zhou
et al. 2006). As a typical alloyed chalcogenide
semiconductor, ZnxCd1-xS has been intensively
studied because of its high density optical recording,
blue or even UV laser diodes (Liu and Zhu 2008,
Raymond et al. 2003), these studies have revealed
that Zn
xCd1-xS has good and tunable absorption
properties in the visible zone of the solar spectrum
resulting from the regulable Eg between CdS and ZnS
materials (Kulkarni et al. 2001). ZnxCd1-xS alloys
are excellent candidates as visible-light-driven photocatalysts, particularly in the potential application of
environmental remediation