Open Access Nano Express

Electrochemical synthesis of ZnO branched submicrorods on carbon fibers and their feasibility for environmental applications

Yeong Hwan Ko, Dandu Kamakshigari Venkata Ramana and Jae Su Yu*

Author Affiliations

Department of Electronics and Radio Engineering, Kyung Hee University, Yongin 446-701, South Korea

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Nanoscale Research Letters 2013, 8:262  doi:10.1186/1556-276X-8-262

Published: 3 June 2013

Abstract

We investigated the structural and optical properties of the hierarchically integrated zinc oxide (ZnO) branched submicrorods on carbon fibers (ZOCF) by scanning/transmission electron microscopy, X-ray diffraction, and photoluminescence (PL) measurements. The ZnO submicrorods were facilely synthesized by an electrochemical deposition method on polyacrylonitrile-based carbon fiber sheets used as a substrate. After coating the ZnO seed layer on the surface of the carbon fibers, ZnO submicrorods were densely grown on the nuclei sites of the seed layer. The prepared ZOCF samples exhibited high crystallinity and good PL properties. A feasibility for environmental application in Pb(II) removal from aqueous solutions was also studied. The ZOCF adsorbent exhibited an excellent maximum adsorption capacity of 245.07 mg g−1, which could be practically used in Pb(II) removal from water. These fabricated ZOCFs are potentially useful for multifunctional and environmental devices.

Keywords:
Hierarchical submicrorods; Zinc oxide; Carbon fibers; Heavy metal removal; Electrochemical deposition