Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.

Hollow-ZIFs-Templated Formation of ZnO@C-N-Co Core-Shell Nanostructure for Highly Efficient Pollutant Photodegradation


Semiconducting metal oxides have been considered as effective photocatalysts for the degradation of organic pollutants to decolorize contaminated water. However, the poor performance and difficulty in recycling greatly hinder their practical applications. Herein, we designed and fabricated, for the first time, a novel ZnO@C-N-Co core-shell nanocomposite towards efficient and recyclable photocatalysis by directly pyrolyzing a hollow Zn/Co-ZIF matrix consisting of ZIF-8 shell with some Co-ZIF nanoplates inside the hollow cavity. It was demonstrated that the ZIF-8-shell-derived ZnO nanoparticles could spontaneously agglomerate and move to the hollow cavity while the internal Co NPs transferred inversely to ligand-derived N-C shell at suitable pyrolysis temperature, resulting in the unique ZnO@C-N-Co core-shell structure. This unique nanostructure possessed the following superior properties: (1) a core-shell structure may make the intermediate ZnO much more stable during the reaction; (2) a porous carbon shell can not only obtain high BET specific area and thus high adsorption capability for reactants, but also inhibit the recombination of photogenerated electrons and holes; (3) the embedded Co NPs were able to provide richer electron traps that further suppress the recombination of electrons and holes. As exemplified for the degradation of methyl orange, the ZnO@C-N-Co showed a significantly improved performance and excellent recyclability due to the highly synergistic effects from the C-N-Co shell and the robust ZnO. This strategy for the synthesis of MOF-derived core-shell nanomaterials could offer prospects for developing highly efficient photocatalysts.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 11 Mar 2017, accepted on 19 Apr 2017 and first published on 19 Apr 2017

Article type: Paper
DOI: 10.1039/C7TA02184D
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Hollow-ZIFs-Templated Formation of ZnO@C-N-Co Core-Shell Nanostructure for Highly Efficient Pollutant Photodegradation

    H. Chen, K. Shen, J. Chen, X. Chen and Y. Li, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA02184D

Search articles by author