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Zirconium 1,4-butylenediphosphonate[Zr(BDPA)] multilayers on a 3-mercaptopropylphosphonate-coated gold electrode were prepared by the conventional layer-by-layer method. The stability of the Zr(BDPA) multilayers in different supporting electrolyte solutions was studied by cyclic voltammetry(CV) and X-ray photoelectron spectroscopy(XPS) measurements. The results show that the Zr(BDPA) multilayers are very stable in 0.2 mol·L-1 KCl, 0.2 mol·L-1 KNO3 and low concentration phosphate buffer solution(PBS) with low pH values(c≤0.05 mol·L-1, pH≤6.8). While in high concentration 0.2 mol·L-1 PBS(pH=5.2~7.4), the Zr(BDPA) multilayers will be partially desorbed within two days, possibly due to the formation of more stable zirconium phosphate. 相似文献
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