Wendong Zhang

Research Field

A sensitive hydrazine electrochemical sensor based on Zinc oxide nano-wires (ZnO NWs) synthesized from low temperature hydrothermal method has been fabricated using an add-on technique. The morphology, crystalline structures, and composition of synthesized ZnO NWs were characterized by scanning electron microscopy, X-ray powder diffraction, energy dispersive spectroscopy, and high-resolution transmission electron microscopy. The batch-made ZnO NWs were used as electrocatalytic material and modified on the gold electrode surface through a printing-like method via Nafion to obtain Nafion/ZnO NWs/Au hydrazine electrochemical sensor. To optimize performance, the effect of the ZnO modified quantity on sensitivity was evaluated by cyclic voltammetry, electrochemical impedance spectroscopic, and single-potential amperometry techniques. The results show that the optimum ZnO NWs modified quantity is about 170 μg·cm−2. The optimized Nafion/ZnO NWs/Au hydrazine electrochemical sensor has a high sensitivity of 3.8 μA·μM−1·cm−2, a short response time of 3 s, and a very low detection limit of 0.0144 μM with a linear hydrazine concentration response range from 3.0 to 562 μM.

Amperometry

Nafion

Hydrazine (antidepressant)

Electrochemical gas sensor

Nanomaterials

10.1149/2.095406jes

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Citations (27)

Facile Synthesis of Carbon-Encapsulated Fe3O4 core/shell Nanospheres for Application in Pb(II) Electrochemical Determination

International Journal of Electrochemical Science (2017)

Shengbo Sang Hui Zhang Youyi Sun Aoqun Jian Wendong Zhang

Carbon fibers

10.20964/2017.02.28

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Citations (12)

Nano-branched Silver Dendrites Modified Glassy Carbon Electrode for Detection of Heavy Metal Ions

International Journal of Electrochemical Science (2019)

Ling Liu Kai Zhuo Zhongyun Yuan Qiang Zhang Wendong Zhang

Glassy carbon

Carbon fibers

10.20964/2019.06.09

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Citations (2)

Highly sensitive wearable strain sensor based on silver nanowires and nanoparticles

Nanotechnology (2018)

Shengbo Sang Lihua Liu Aoqun Jian Qianqian Duan Jianlong Ji

Here, we propose a highly sensitive and stretchable strain sensor based on silver nanoparticles and nanowires (Ag NPs and NWs), advancing the rapid development of electronic skin. To improve the sensitivity of strain sensors based on silver nanowires (Ag NWs), Ag NPs and NWs were added to polydimethylsiloxane (PDMS) as an aid filler. Silver nanoparticles (Ag NPs) increase the conductive paths for electrons, leading to the low resistance of the resulting sensor (14.9 Ω). The strain sensor based on Ag NPs and NWs showed strong piezoresistivity with a tunable gauge factor (GF) at 3766, and a change in resistance as the strain linearly increased from 0% to 28.1%. The high GF demonstrates the irreplaceable role of Ag NPs in the sensor. Moreover, the applicability of our high-performance strain sensor has been demonstrated by its ability to sense movements caused by human talking, finger bending, wrist raising and walking.

Gauge factor

Silver nanoparticle

Polydimethylsiloxane

Piezoresistive effect

Strain (injury)

10.1088/1361-6528/aabbba

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Citations (95)

FM1825_2015 Iowa Land Value Survey

Wendong Zhang

Value (mathematics)

Source