Issue 19, 2015

Fabrication of inorganic–organic core–shell heterostructure: novel CdS@g-C3N4 nanorod arrays for photoelectrochemical hydrogen evolution

Abstract

Novel nanoarrays composed of inorganic–organic CdS@g-C3N4 core–shell nanorods were fabricated via a simple hydrothermal treatment and heating process. The samples were characterized by XRD, FESEM, TEM, XPS, FTIR, UV-vis and photoelectrochemical (PEC) measurements. We find that both PEC performance and stability against light illumination of the CdS@g-C3N4 CSNRs are significantly enhanced compared with pure CdS NRs. The photocurrent density of the CdS@g-C3N4 CSNRs reaches up to 1.16 mA cm−2, which is 2.5 times higher than that of pure CdS NRs under the same conditions. More importantly, after 3600 s continuous illumination, the CdS@g-C3N4 CSNRs are quite stable and more than 85% of the initial photocurrent is sustained, while the photocurrent of CdS NRs decays to 20% of the initial value. Finally, a possible mechanism for the enhanced PEC performance and stability of the CdS@g-C3N4 CSNRs heterostructure is proposed and discussed systematically based on our experimental results.

Graphical abstract: Fabrication of inorganic–organic core–shell heterostructure: novel CdS@g-C3N4 nanorod arrays for photoelectrochemical hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
17 Nov 2014
Accepted
19 Jan 2015
First published
19 Jan 2015

RSC Adv., 2015,5, 14074-14080

Author version available

Fabrication of inorganic–organic core–shell heterostructure: novel CdS@g-C3N4 nanorod arrays for photoelectrochemical hydrogen evolution

Y. Li, X. Wei, H. Li, R. Wang, J. Feng, H. Yun and A. Zhou, RSC Adv., 2015, 5, 14074 DOI: 10.1039/C4RA14690E

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