Ratanatawanate Chalita, Xiong Chunrong, Balkus Kenneth J
Department of Chemistry, The University of Texas at Dallas, Richardson, Texas 75083-0688, USA.
ACS Nano. 2008 Aug;2(8):1682-8. doi: 10.1021/nn800141e.
PbS quantum dots (PbS QDs) were prepared on the inside and outside surfaces of TiO(2) nanotubes by using thiolactic acid as an organic linker. The sizes of PbS QDs were controlled by employing a dip coating process to anchor the PbS QDs onto the TiO(2) nanotubes. The PbS QDs with diameters of 2-10 nm were obtained by adjusting the concentration of thiolactic acid. TiO(2) nanotubes with PbS QDs located only inside the nanotubes were prepared by first coating the tubes with the double-chain cationic surfactant DDAB. The PbS QDs supported on TiO(2) nanotubes were characterized by TEM, as well as Raman, FT-IR, and UV-vis spectroscopy.
通过使用硫代乳酸作为有机连接剂，在TiO₂纳米管的内外表面制备了硫化铅量子点（PbS QDs）。采用浸涂工艺将PbS QDs锚定在TiO₂纳米管上，从而控制PbS QDs的尺寸。通过调节硫代乳酸的浓度，获得了直径为2 - 10 nm的PbS QDs。首先用双链阳离子表面活性剂DDAB包覆纳米管，制备了仅在纳米管内部含有PbS QDs的TiO₂纳米管。通过透射电子显微镜（TEM）以及拉曼光谱、傅里叶变换红外光谱（FT - IR）和紫外可见光谱对负载在TiO₂纳米管上的PbS QDs进行了表征。
