Preparation and Characterization of Lanthanum Self-Assembled Nano-Films
Lanthanum (La) nano-films prepared by a self-assembled technique on a silicone-based material surface, was studied by using an all-round functional Turbiscan LAB stability analyzer and X-ray fluorescence analysis (XRF) as well as atomic force microscope (AFM). La content introduced in the assembled nano-film reached a maximum at pH value between 5 and 6. In the preparation of colloidal sol, no phase separation took place at 60 °C where the colloidal particles uniformly and stably dispersed in the solution. The optimum topographic feature was observed after 24 hours, whence self-assembled process was performed. The particle dispersion of the assembled film was uniform and compact at the optimum EDTA to La molar ratio 0.5.
Yansheng Yin and Xin Wang
G. X. Yu et al., "Preparation and Characterization of Lanthanum Self-Assembled Nano-Films", Advanced Materials Research, Vols. 79-82, pp. 871-874, 2009