化学传感器
化學傳感器
화학전감기
CHEMICAL SENSORS
2013年
3期
55-60
,共6页
黄田贞%林馨馨%宦双燕
黃田貞%林馨馨%宦雙燕
황전정%림형형%환쌍연
铂纳米颗粒沉积多孔金膜%甲醛%电催化
鉑納米顆粒沉積多孔金膜%甲醛%電催化
박납미과립침적다공금막%갑철%전최화
Pt-nanoparticle-coated gold-nanoporous film%formaldehyde%electrocatalytic
在多孔金膜表面电沉积铂纳米颗粒，制备了多孔金膜/铂纳米颗粒修饰电极。其中多孔金膜是在恒电位氧化后再在抗坏血酸溶液中还原制得的。利用循环伏安法（CV）对甲醛在此传感界面上的电化学行为进行了研究，结果表明，在酸性条件下，该传感器对甲醛表现出较好的电催化性能。在优化条件下，甲醛的峰电流与浓度在1×10-5 mol/L到1×10-3 mol/L范围内呈良好的线性关系，检出限5×10-6 mol/L。
在多孔金膜錶麵電沉積鉑納米顆粒，製備瞭多孔金膜/鉑納米顆粒脩飾電極。其中多孔金膜是在恆電位氧化後再在抗壞血痠溶液中還原製得的。利用循環伏安法（CV）對甲醛在此傳感界麵上的電化學行為進行瞭研究，結果錶明，在痠性條件下，該傳感器對甲醛錶現齣較好的電催化性能。在優化條件下，甲醛的峰電流與濃度在1×10-5 mol/L到1×10-3 mol/L範圍內呈良好的線性關繫，檢齣限5×10-6 mol/L。
재다공금막표면전침적박납미과립，제비료다공금막/박납미과립수식전겁。기중다공금막시재항전위양화후재재항배혈산용액중환원제득적。이용순배복안법（CV）대갑철재차전감계면상적전화학행위진행료연구，결과표명，재산성조건하，해전감기대갑철표현출교호적전최화성능。재우화조건하，갑철적봉전류여농도재1×10-5 mol/L도1×10-3 mol/L범위내정량호적선성관계，검출한5×10-6 mol/L。
Platinum nanoparticles were electrochemically deposited on a gold-nanoporous film coated gold electrode to prepare a sensor for detection of formaldehyde. Gold-nanoporous film was obtained by anodizing the gold electrode under a high potential and then reduced by freshly prepared ascorbic acid (AA) solution. The electrochemical behaviors of formaldehyde at the sensing surface were studied by cyclic voltammetry. The results showed that this Pt-nanoparticle-coated gold-nanoporous film (PGNF) electrode had good electrocatalytic ability for the redox of formaldehyde in acidic medium. Under optimal conditions, the peak current of formaldehyde was linear to its concentration from 1 × 10-5 mol/L to 1 × 10-3 mol/L with a detection limit of 5 × 10-6 mol/L.
