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Issue 48, 2014
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The encapsulation of CdS in carbon nanotubes for stable and efficient photocatalysis

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Abstract

A CdS encapsulated carbon nanotube (CNT) photocatalyst was prepared by a liquid-chemistry method. Through filling of CNTs with CdS, the aggregation of CdS was prevented efficiently by the good confinement effect of CNTs, and the photocatalytic performance of CdS was enhanced by 2.5 times via synergistic integration of the confinement effect of CNTs and heterojunction between CNTs and CdS. The photostability of CdS encapsulated in and attached on CNTs was investigated systematically through methylene blue photocatalytic degradation, X-ray diffraction, transmission electron microscopy, and inductively coupled plasma-atomic emission spectroscopy. The results indicate that the photocorrosion of CdS is successfully suppressed when it is encapsulated in the CNTs. The mechanism analysis suggests that spatial synergy of the CdS and powerful adsorptivity of CNTs are the primary causes for photocorrosion inhibition. Our efforts propose a new scheme to remarkably promote both the photostability and photocatalytic activity of photocorrosion-susceptible photocatalysts.

Graphical abstract: The encapsulation of CdS in carbon nanotubes for stable and efficient photocatalysis

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Publication details

The article was received on 02 Sep 2014, accepted on 23 Oct 2014 and first published on 24 Oct 2014


Article type: Paper
DOI: 10.1039/C4TA04549A
Citation: J. Mater. Chem. A, 2014,2, 20939-20946

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    The encapsulation of CdS in carbon nanotubes for stable and efficient photocatalysis

    X. Cui, Y. Wang, G. Jiang, Z. Zhao, C. Xu, A. Duan, J. Liu, Y. Wei and W. Bai, J. Mater. Chem. A, 2014, 2, 20939
    DOI: 10.1039/C4TA04549A

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