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基于含Ni稀土鈣鈦礦LaNiTiO3的過氧化氫無酶傳感器

2014-07-10 21:29:10王海燕等
分析化學 2014年6期

王海燕等

摘 要 合成了一種含Ni的新型稀土鈣鈦礦納米氧化物

4 結 論

通過簡單方法構建了基于含Ni的稀土鈣鈦礦納米材料2的直接電催化反應中,得到了良好結果。 此傳感器具有活性高、響應快、線性范圍寬、檢出限低、靈敏度高、抗干擾能力強和穩定性好等特點,具有潛在的應用價值。

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A Nonenzymatic Sensor for H2O2 Detection Based on

Rareearth Perovskite LaNiTiO3 Containing Ni

WANG HaiYan1,2, ZHU XiaoLi1, XIN MeiLing1, XU YanHong*1

1(School of Life Sciences, Shanghai University, Shanghai 200444, China)

2(College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract A Nibased rareearth perovskite LaNiTiO3 nanoparticles was synthesized and its catalytic activity was investigated. Based on this, a simple and quick nonenzyme electrochemical sensor was fabricated with stable and reliable performances for the determination of hydrogen peroxide (H2O2). The techniques of Xray diffraction, FTIR spectra, transmission electron microscopy, Xray fluorescene spectroscopy and scan electronmicroscope were used to characterize the composition, structure and morphology of assynthesized sample. The sensor based on this nanomaterial was investigated and optimized by cyclic voltammetry and currenttime techniques. The results showed the working electrode modified with LaNiTiO3 (0.5 g/L, 8.0 μL) in 0.1 mol/L NaOH exhibited good catalytic properties for H2O2. Under the optimum conditions, the sensor performed excellent properties, such as quick response time (about 2 s), a wide linearity (0.2 μmol/L -8.0 mmol/L), a low detection limit of 0.05 μmol/L (S/N=3), a high sensitivity of 957 μA (mmol/L

25 Song M J, Hwang S W, Whang D. Talanta, 2010, 80(5): 1648-1652

26 Yao S, Xu J, Wang Y, Chen X, Xu Y, Hu S. Anal. Chim. Acta, 2006, 557(12): 78-84

A Nonenzymatic Sensor for H2O2 Detection Based on

Rareearth Perovskite LaNiTiO3 Containing Ni

WANG HaiYan1,2, ZHU XiaoLi1, XIN MeiLing1, XU YanHong*1

1(School of Life Sciences, Shanghai University, Shanghai 200444, China)

2(College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract A Nibased rareearth perovskite LaNiTiO3 nanoparticles was synthesized and its catalytic activity was investigated. Based on this, a simple and quick nonenzyme electrochemical sensor was fabricated with stable and reliable performances for the determination of hydrogen peroxide (H2O2). The techniques of Xray diffraction, FTIR spectra, transmission electron microscopy, Xray fluorescene spectroscopy and scan electronmicroscope were used to characterize the composition, structure and morphology of assynthesized sample. The sensor based on this nanomaterial was investigated and optimized by cyclic voltammetry and currenttime techniques. The results showed the working electrode modified with LaNiTiO3 (0.5 g/L, 8.0 μL) in 0.1 mol/L NaOH exhibited good catalytic properties for H2O2. Under the optimum conditions, the sensor performed excellent properties, such as quick response time (about 2 s), a wide linearity (0.2 μmol/L -8.0 mmol/L), a low detection limit of 0.05 μmol/L (S/N=3), a high sensitivity of 957 μA (mmol/L

25 Song M J, Hwang S W, Whang D. Talanta, 2010, 80(5): 1648-1652

26 Yao S, Xu J, Wang Y, Chen X, Xu Y, Hu S. Anal. Chim. Acta, 2006, 557(12): 78-84

A Nonenzymatic Sensor for H2O2 Detection Based on

Rareearth Perovskite LaNiTiO3 Containing Ni

WANG HaiYan1,2, ZHU XiaoLi1, XIN MeiLing1, XU YanHong*1

1(School of Life Sciences, Shanghai University, Shanghai 200444, China)

2(College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract A Nibased rareearth perovskite LaNiTiO3 nanoparticles was synthesized and its catalytic activity was investigated. Based on this, a simple and quick nonenzyme electrochemical sensor was fabricated with stable and reliable performances for the determination of hydrogen peroxide (H2O2). The techniques of Xray diffraction, FTIR spectra, transmission electron microscopy, Xray fluorescene spectroscopy and scan electronmicroscope were used to characterize the composition, structure and morphology of assynthesized sample. The sensor based on this nanomaterial was investigated and optimized by cyclic voltammetry and currenttime techniques. The results showed the working electrode modified with LaNiTiO3 (0.5 g/L, 8.0 μL) in 0.1 mol/L NaOH exhibited good catalytic properties for H2O2. Under the optimum conditions, the sensor performed excellent properties, such as quick response time (about 2 s), a wide linearity (0.2 μmol/L -8.0 mmol/L), a low detection limit of 0.05 μmol/L (S/N=3), a high sensitivity of 957 μA (mmol/L

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