Jump to main content
Jump to site search

Issue 8, 2015
Previous Article Next Article

Preparation and enhanced photoelectrochemical performance of selenite-sensitized zinc oxide core/shell composite structure

Author affiliations

Abstract

A fast, versatile and low-cost hydrothermal chemical synthesis based on ion-exchange has been used to deposit a shell of cupric selenite onto vertically aligned zinc oxide nanorod arrays with a buffer layer of zinc selenite for photoelectrochemical water splitting. In the present work, detailed growth mechanisms for single shell of zinc selenite composite structure and double shells of zinc selenite and cupric selenite closed nanotubes based on zinc oxide core are discussed. The enhanced optical property and the improved photoelectrochemical performance are characterized. On the basis of cupric selenite outer shell, such a novel core/shell nanostructure provides a high photocatalytic activity, and the photocurrent density is up to 5.70 mA cm−2. This promising result is probably due to the improved absorption efficiency, enhanced photoelectron collection process and reduced recombination rate including photoelectron injection and charge transportation. The double shells based on zinc oxide composite structure can render this new material promising in photoelectrochemical water splitting.

Graphical abstract: Preparation and enhanced photoelectrochemical performance of selenite-sensitized zinc oxide core/shell composite structure

Back to tab navigation

Publication details

The article was received on 05 Nov 2014, accepted on 02 Jan 2015 and first published on 06 Jan 2015


Article type: Paper
DOI: 10.1039/C4TA05973E
Citation: J. Mater. Chem. A, 2015,3, 4239-4247

  •   Request permissions

    Preparation and enhanced photoelectrochemical performance of selenite-sensitized zinc oxide core/shell composite structure

    T. Hong, Z. Liu, H. Liu, J. Liu, X. Zhang, J. Han, K. Guo and B. Wang, J. Mater. Chem. A, 2015, 3, 4239
    DOI: 10.1039/C4TA05973E

Search articles by author

Spotlight

Advertisements