化学传感器
化學傳感器
화학전감기
CHEMICAL SENSORS
2013年
4期
38-45
,共8页
杨玲%王炜祺%郭倩琼%高佩怡%马腾飞%杨乐乐%黄杉生
楊玲%王煒祺%郭倩瓊%高珮怡%馬騰飛%楊樂樂%黃杉生
양령%왕위기%곽천경%고패이%마등비%양악악%황삼생
石墨烯%壳聚糖%离子液体%量子点%金纳米颗粒%双酚A%电化学传感器
石墨烯%殼聚糖%離子液體%量子點%金納米顆粒%雙酚A%電化學傳感器
석묵희%각취당%리자액체%양자점%금납미과립%쌍분A%전화학전감기
graphene%chitosan%ionic liquid%quantum dots%Au nanoparticles%bisphenol A%electrochemical sensor
在石墨烯、壳聚糖和1-乙基-3-甲基咪唑四氟硼酸盐([BMIM])复合材料(Graphene-Chits-[BMIM])表面电沉积金,并自组装L-半胱氨酸包覆CdTe量子点,制备了修饰玻碳电极新型双酚A传感器。采用循环伏安法和电化学交流阻抗等方法研究了修饰电极的电化学特性。由于Graphene-Chits-[BMIM]复合材料中,石墨烯和[BMIM]都具有良好的导电性,该修饰电极对于双酚A有较好的电流响应。在最佳条件下,该传感器对双酚A的检测浓度范围:5.0×10-8~7.05×10-6 mol/L,检测限为2.0×10-8 mol/L (3倍信噪比),相关系数为0.999。
在石墨烯、殼聚糖和1-乙基-3-甲基咪唑四氟硼痠鹽([BMIM])複閤材料(Graphene-Chits-[BMIM])錶麵電沉積金,併自組裝L-半胱氨痠包覆CdTe量子點,製備瞭脩飾玻碳電極新型雙酚A傳感器。採用循環伏安法和電化學交流阻抗等方法研究瞭脩飾電極的電化學特性。由于Graphene-Chits-[BMIM]複閤材料中,石墨烯和[BMIM]都具有良好的導電性,該脩飾電極對于雙酚A有較好的電流響應。在最佳條件下,該傳感器對雙酚A的檢測濃度範圍:5.0×10-8~7.05×10-6 mol/L,檢測限為2.0×10-8 mol/L (3倍信譟比),相關繫數為0.999。
재석묵희、각취당화1-을기-3-갑기미서사불붕산염([BMIM])복합재료(Graphene-Chits-[BMIM])표면전침적금,병자조장L-반광안산포복CdTe양자점,제비료수식파탄전겁신형쌍분A전감기。채용순배복안법화전화학교류조항등방법연구료수식전겁적전화학특성。유우Graphene-Chits-[BMIM]복합재료중,석묵희화[BMIM]도구유량호적도전성,해수식전겁대우쌍분A유교호적전류향응。재최가조건하,해전감기대쌍분A적검측농도범위:5.0×10-8~7.05×10-6 mol/L,검측한위2.0×10-8 mol/L (3배신조비),상관계수위0.999。
A bisphenol A electrochemical sensor was fabricated by immobilizing Au nanoparticles, graphene/chitosan/ionic liquid composite and L-cysteine capped quantum dots on the surface of glassy carbon electrode. The electrochemical behavior of the BPA sensor was investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The sensor exhibits good amperometric response towards bisphenol A(BPA) because of the excellent conductivity of graphene and ionic liquid. Under the optimal experimental conditions, the current is linear with the concentration of BPA in the range from 5.0 × 10-8 to 7.05 × 10-6 mol/L, with a detection limit of 2.0 × 10-8 mol/L (S/N=3) and a correlation coefficient of 0.999.