“…Considering that the solid solutions can be obtained by combining a narrowband-gap material with a wide-band-gap material, or even two wide-band-gap materials, thus the solid solutions with a proper band structure may be formed by choosing and adjusting the right components. To present, a huge number of multi-component solid solutions formed by CdS were reported successively, such as Zn x Cd 1 À x S [14,24], Mn 1 À x Cd x S [25], (CuIn)xCd 2(1 À x) S 2 [26], Zn 1 À x Cd x In 2 S 4 [27,28], Cd x Cu y Zn 1 À x-y S [29], (Zn x Cd 1 À x )(Se x S 1 À x ) [30], Cd 0.1 Sn x Zn 0.9-2x S [31], Cu-doped Cd 0.1 Zn 0.9 S [32] and Zn x Cd 1 À x S/CNTs [33], et al Among them, the ternary Mn-Cd-S alloyed system formed by combining MnS (E g ¼3.7 eV) with CdS (E g ¼2.4 eV) has attracted considerable attention [34][35][36]. MCS solid solution, due to the tunability of its band gap by regulating the contents of Cd and Mn, is a promising candidate for visible light catalysis.…”