Abstract
A series of novel one-dimensional (1D) ZnS/MnS heteronanostructures were prepared by a multistep solution-solid-solid (SSS) growth method using [(C4H9)2NCS2]2Zn and [(C4H9)2NCS2]2Mn as the precursors and Ag2S as the catalyst. The composition of the 1D heteronanostructures could be effectively modulated by varying the addition sequence of the precursors, such as the Ag2S/MnS/ZnS and Ag2S/ZnS/MnS heteronanostructures, which were obtained through the successive addition of [(C4H9)2NCS2]2Zn and [(C4H9)2NCS2]2Mn precursors but in different sequences. Using the same Ag2S catalysts, the average diameter of the 1D ZnS/MnS heteronanostructures with multisegments of ZnS and MnS is located between that of ZnS nanorod in Ag2S/ZnS and that of MnS nanorod in Ag2S/MnS. This phenomenon could arise from the different cationic radii and lattice parameters of ZnS and MnS. The UV-vis absorbance of the 1D ZnS/MnS heteronanostructures could be attributed to the interband transitions of ZnS and MnS. These findings contribute to the rational synthesis of novel 1D semiconductor heteronanostructures with multicomponents and benefit the development of optoelectronic devices.
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