湖北师范学院学报(自然科学版)
湖北師範學院學報(自然科學版)
호북사범학원학보(자연과학판)
JOURNAL OF HUBEI NORMAL UNIVERSITY(NATURAL SCIENCE)
2014年
1期
37-41
,共5页
非酶传感器%葡萄糖%化学修饰电极%碳纳米管%钯纳米粒子
非酶傳感器%葡萄糖%化學脩飾電極%碳納米管%鈀納米粒子
비매전감기%포도당%화학수식전겁%탄납미관%파납미입자
nonenzymatic sensor%glucose%chemically modified electrode%carbon nanotubes%palladium nanoparticles
将树状聚合物(PAMAM)通过共价反应嫁接在羧基化碳纳米管(CNTs)表面后用于钯纳米粒子(Pd NPs)的原位沉积,制备成CNTs-PAMAM/Pd NPs复合物。通过壳聚糖包埋将制备的该钯纳米复合物用于玻碳电极的修饰,并通过交流阻抗法和循环伏安法对电极性能进行表征和优化,制备成可用于葡萄糖的安培检测的非酶电化学传感器。实验表明,在最佳实验条件下该传感器可在较短时间内(<3 s)实现对葡萄糖的快速稳态安培响应,并可在从0.03 mmol/L至61.7 mmol/L较宽线性范围内实现对葡萄糖的准确测定,检出限为11.5μmol/L。该传感器成本低廉,性质稳定,且具有较好的选择性和重复性,因而在实际应用中具有较好的发展前景。
將樹狀聚閤物(PAMAM)通過共價反應嫁接在羧基化碳納米管(CNTs)錶麵後用于鈀納米粒子(Pd NPs)的原位沉積,製備成CNTs-PAMAM/Pd NPs複閤物。通過殼聚糖包埋將製備的該鈀納米複閤物用于玻碳電極的脩飾,併通過交流阻抗法和循環伏安法對電極性能進行錶徵和優化,製備成可用于葡萄糖的安培檢測的非酶電化學傳感器。實驗錶明,在最佳實驗條件下該傳感器可在較短時間內(<3 s)實現對葡萄糖的快速穩態安培響應,併可在從0.03 mmol/L至61.7 mmol/L較寬線性範圍內實現對葡萄糖的準確測定,檢齣限為11.5μmol/L。該傳感器成本低廉,性質穩定,且具有較好的選擇性和重複性,因而在實際應用中具有較好的髮展前景。
장수상취합물(PAMAM)통과공개반응가접재최기화탄납미관(CNTs)표면후용우파납미입자(Pd NPs)적원위침적,제비성CNTs-PAMAM/Pd NPs복합물。통과각취당포매장제비적해파납미복합물용우파탄전겁적수식,병통과교류조항법화순배복안법대전겁성능진행표정화우화,제비성가용우포도당적안배검측적비매전화학전감기。실험표명,재최가실험조건하해전감기가재교단시간내(<3 s)실현대포도당적쾌속은태안배향응,병가재종0.03 mmol/L지61.7 mmol/L교관선성범위내실현대포도당적준학측정,검출한위11.5μmol/L。해전감기성본저렴,성질은정,차구유교호적선택성화중복성,인이재실제응용중구유교호적발전전경。
Polyamidoamine (PAMAM) dendrimer was covalently grafted with carboxylated carbon nanotubes (CNTs) for the in situ deposition of palladium nanoparticles (Pd NPs).Based on the electrode modification with the as -prepared CNTs-PAM-AM/Pd NPs nanocomposites and the further coating of chitosan on its surface , a nonenzymatic amperometric glucose biosensor was developed.Electrochemical impedance spectroscopy and cyclic voltammetry were used to characterize and optimize the performance of the sensor.Under the optimal conditions, this sensor exhibited a rapid amperometric response towards glucose (less than 3 s), and a wide linear range from 0.03 to 61.7 m mol? L-1 was obtained with a detection limit of 11.5μmol?L-1 (S/N=3).This biosensor has low cost , good stability, selectivity and repeatability, thus indicating great potentials for practical applications.