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采用共沉淀法合成了钴铝水滑石(CoAl-LDH),将CoAl-LDH与聚苯乙烯磺酸钠(PSS)通过层层自组装法构筑LDH多层膜电极,并将其应用于葡萄糖的分析测定研究。X射线衍射光谱、红外光谱和SEM表明:共沉淀法合成的CoAl-LDH具有典型的水滑石特征峰和形貌。紫外-可见光谱表明:CoAl-LDH可与PSS均匀有效地组装构筑多层膜。电化学研究表明:CoAl-LDH能有效地检测葡萄糖,随着PSS/CoAl-LDH组装层数的增加,电极的电化学响应增加。研究结果表明,CoAl-LDH电极对葡萄糖的分析检测具有宽的线性范围和好的灵敏度。
Cobalt-aluminum hydrotalcite (CoAl-LDH) was synthesized by co-precipitation method. LDH multilayer electrode was constructed by layer-by-layer assembly of CoAl-LDH and PSS (sodium polystyrene sulfonate) Analytical assays. XRD, FT-IR and SEM showed that the CoAl-LDH synthesized by coprecipitation method has the typical hydrotalcite characteristic peaks and morphologies. The UV-vis spectra show that CoAl-LDH can be assembled with PSS uniformly and effectively to construct multilayer films. Electrochemical studies show that: CoAl-LDH can effectively detect glucose, with the PSS / CoAl-LDH assembly layer increases, the electrode electrochemical response increased. The results show that CoAl-LDH electrode has a wide linear range and good sensitivity for the detection of glucose.