CAJ | 학술논문

采用循环伏安法在PrCl_3+ K_3Fe(CN)_6溶液中于石墨电极表面电沉积铁氰化镨(PrHCF)薄膜,制备PrHCF修饰电极.对该修饰电极电化学的行为进行分析,包括扫描速度、K~+浓度以及阴、阳离子对膜电极的影响.同时,以红外和XPS对膜进行了表征,IR谱图中氰基的伸缩振动峰证明了膜的存在;而XPS谱图中Fe2p_(1/2))和Fe2p_(3/2))能级的分裂说明了在成膜过程中Fe的价态发生变化,据此提出了可能的电聚合机理.同时,此修饰电极对半胱氨酸具有电催化氧化活性,并对其响应进行了研究.
채용순배복안법재PrCl_3+ K_3Fe(CN)_6용액중우석묵전겁표면전침적철청화보(PrHCF)박막,제비PrHCF수식전겁.대해수식전겁전화학적행위진행분석,포괄소묘속도、K~+농도이급음、양리자대막전겁적영향.동시,이홍외화XPS대막진행료표정,IR보도중청기적신축진동봉증명료막적존재;이XPS보도중Fe2p_(1/2))화Fe2p_(3/2))능급적분렬설명료재성막과정중Fe적개태발생변화,거차제출료가능적전취합궤리.동시,차수식전겁대반광안산구유전최화양화활성,병대기향응진행료연구.
Praseodymium hexacyanoferrate film was modified on the graphite electrode by cyclic voltammetry in the solution of PrCl_3 and K_3Fe(CN)_6. Its electrochemical properties, including the influence of different scan rates, ions, and K~+ concentrations on the film, were studied. The membrane was characterized by IR and XPS. In IR spectrum, the vibration of cyano group verified from the formation of the film on the electrode. In XPS spectrum, the splitting of Fe2p_(1/2) )and Fe2p_(3/2)) showed that the valence of iron has been changed in the film formation, and a proper electropolymerization mechanism was put forward. The results showed the PrHCF film have some electrocatalytic activity to the oxidation of cysteine. The detection conditions for cysteine such as the potential and pH were also discussed.