Hierarchically Self-Assembled Star-Shaped ZnO Microparticles for Electrochemical Sensing of Amines

Jianping Du; Xiaoxi Huang; Ruihua Zhao; Jinping Li; Tewodros Asefa

doi:10.1002/chem.201601110

Hierarchically Self-Assembled Star-Shaped ZnO Microparticles for Electrochemical Sensing of Amines

Chemistry. 2016 Jun 6;22(24):8068-73. doi: 10.1002/chem.201601110. Epub 2016 Apr 29.

Authors

Jianping Du^{1

2}, Xiaoxi Huang³, Ruihua Zhao⁴, Jinping Li⁵, Tewodros Asefa^{6

7}

Affiliations

¹ College of Chemistry and Chemical Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan, Shanxi, 030024, P. R. China. dujp518@163.com.
² Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey, 08854, USA. dujp518@163.com.
³ Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey, 08854, USA.
⁴ Shanxi Kunming Tobacco Limited Liability Company, 86 Bingzhou East Road, Taiyuan, Shanxi, 030012, P. R. China.
⁵ Research Institute of Special Chemicals, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan, Shanxi, 030024, P. R. China. jpli211@hotmail.com.
⁶ Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey, 08854, USA. tasefa@rci.rutgers.edu.
⁷ Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey, 08854, USA. tasefa@rci.rutgers.edu.

PMID: 27017147
DOI: 10.1002/chem.201601110

Abstract

Novel, hierarchically nanostructured, star-shaped ZnO (SSZ) microparticles are synthesized by a hydrothermal synthetic route. The SSZ microparticles serve as effective platforms for electrochemical detection of amines in solution. The morphology and structure of the materials are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and UV/Vis spectroscopy. The as-synthesized SSZ microparticles comprise self-assembled hexagonal prisms that possess nanometer and micrometer pores in their structure and on their surfaces-structural features that are conducive to sensing applications. An electrode fabricated by using the hierarchically nanostructured SSZ materials serve as a sensitive electrochemical sensor for detection of low concentrations of ethylenediamine, with a sensitivity of 2.98×10(-2) mA cm(-2) mm(-1) , a detection limit of 2.36×10(-2) mm, and a short response time of 8 s.

Keywords: amines; self-assembly; semiconductors; sensors; zinc oxide.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.