• 文献标题:   Core-shell Fe3O4-ZnO nanoparticles decorated on reduced graphene oxide for enhanced photoelectrochemical water splitting
  • 文献类型:   Article
  • 作  者:   YUSOFF N, KUMAR SV, PANDIKUMAR A, HUANG NM, MARLINDA AR, AN AMT MN
  • 作者关键词:   zinc oxide, iron iii oxide, reduced graphene oxide, coreshell, water splitting
  • 出版物名称:   CERAMICS INTERNATIONAL
  • ISSN:   0272-8842 EI 1873-3956
  • 通讯作者地址:   Univ Malaya
  • 被引频次:   32
  • DOI:   10.1016/j.ceramint.2014.12.084
  • 出版年:   2015

▎ 摘  要

Herein, we report the hydrothermal synthesis of hetero-nanostructures of core-shell Fe3O4-ZnO nanoparticles with rGO sheets having different weight ratios and characterized by suitable techniques, including high-resolution transition electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), energy dispersive x-ray analysis (EDX), x-ray diffraction (XRD), Raman microscopy, photoluminescence spectroscopy (PL) and UV vis spectroscopy. The as-prepared rGO/Fe3O4-ZnO nanocomposite materials were used for photoelectrochemical water splitting. The photoelectrochemical results showed that the photocurrent density increased from 520 mu A/cm(2) to 850 mu A/cm(2) at 1.23 V-RHE with an increase in the (Zn(OH)(2) precursor loading. The addition of graphene effectively enhanced the photoelectrochemical performance of the core-shell Fe3O4-ZnO hybrid material. We further demonstrated that the Zn(OH)(2) content in the composite played an important role in the determination of the electronic interaction strength with rGO sheets, and the formation of the core-shell Fe3O4-ZnO complex helped to slow the recombination rate of electron-hole pairs, which also affected the photoelectrochemical performance. This rGO/Fe3O4-ZnO nanocomposite material could be a promising candidate for solar hydrogen production. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.