Electrochemical Synthesis, Characterization and Gas Sensing Properties of Hybrid Ppy/CS Coated ZnO Nanospheres

被引：9

作者：

Ebrahimiasl, Saeideh ^{[1
]}

Zakaria, Azmi ^{[2
]}

机构：

[1] Islamic Azad Univ, Ahar Branch, Dept Chem, Ahar, Iran

[2] Univ Putra Malaysia, Inst Adv Technol, Upm Serdang 4340, Malaysia

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2016年 / 11卷 / 12期

关键词：

hybrid core-shell; nanobiocomposite; electrodeposition; hydrogen sensor; ORGANIC-INORGANIC HYBRIDS; ACID DOPED POLYANILINE; LOW-TEMPERATURE; POLYPYRROLE FILMS; POLYMER COMPOSITES; AMMONIA SENSOR; NITRIC-OXIDE; SENSITIVITY; CONDUCTIVITY; NANOFIBERS;

D O I：

10.20964/2016.12.49

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical deposition method was used to synthesis a new poly-pyrrole (Ppy), zinc oxide (ZnO) nanoparticles (NPs), and chitosan (CS) nanospheres. The Ppy/CS/ZnO film was analyzed for gas sensing properties. The morphology of Ppy/CS/ZnO electrodes was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM). Chemical compositions of Ppy/CS/ZnO electrodes were characterized by energy dispersive X-ray analysis (EDX). A high selectivity and response towards hydrogen were realized with a ZnO NPs core and chitosan/Ppy shell hybrid nanospheres. Optimum sensing response was achieved with Ppy/CS nanospheres synthesized in the presence of 12 wt% ZnO NPs. The sensing response of fabricated sensor was proportional to the hydrogen gas concentration and exhibited a fast response over a wide dynamic range. The enhanced response originated from the sensing mechanism related with composition and morphology of deposited nanospheres.

引用

页码：9902 / 9916

页数：15

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