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| 纳米TiO 2 -碳纳米管复合膜修饰电极伏安法测定水中α -萘酚和β -萘酚 |
| Voltammetric Determ ination of α- naphtholand β-naphtholby a Nano-TiO 2 /MW NTs Composite Film M odified Glassy Carbon Electrode |
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| DOI： |
| 中文关键词: α - 萘酚 β - 萘酚 纳米 TiO 2 碳纳米管 修饰电极 伏安法 模拟水样 |
| 英文关键词: α- naphthol β-naphthol Nano- TiO 2 Carbon nanotubes Modified electrode Volammetry Simulated watersamples |
| 基金项目:国家自然科学基金资助项目 (20871107); 河南省杰出青年科研基金资助项目 (0612002700); 河南省基础与前沿技术研究计划基金资助项目 (072300420010) |
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| 中文摘要: |
| 制备了一种新型的纳米TiO 2 - 碳纳米管复合膜修饰电极, 在 pH 值为 5.57 的 NaAc- HAc 缓冲溶液中, 研究了α - 萘酚和β - 萘酚在该修饰电极上的电化学行为, 据此建立了纳米TiO 2 - 碳纳米管复合膜修饰电极伏安法测定水中α - 萘酚和β - 萘酚的方法。优化了试验条件, α - 萘酚和β - 萘酚分别在8.3 × 10 -7 mol/L ～ 1.0 × 10 -5 mol/L和 7.8 × 10 -7 mol/L ～ 1.0 × 10 -5 mol/L 范围内, 浓度与氧 |
| 英文摘要: |
| A new nano-TiO 2 /MWNTscomposite film modified electrode wasprepared. In pH 5.57 NaAc HAc buffersolution,theelectrochemicalbehaviorof α- naphtholand β- naphtholwereinvestigated with differentialpulse voltammetry atthe modified electrode. Undertheoptimum experimentalconditions,thelinearcalibration ranges were8.3 × 10 -7 mol/L to1.0 × 10 -5 mol/L for α - naphtholand 7.8 × 10 -7 mol/L to 1.0 × 10 -5 mol/L for β- naphthol. The concentration andthecurrentofoxidation peak showed goodlinearrelationship. The detection limitsof3.5 × 10-7 mol/L for α- naphtholand 2.3 × 10 -7 mol/L for β- naphtholin 3 min open- circuitpre concentration. The recoveriesofsimulated watersamples were from 97.6% to101 %. |
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