Format

Send to

Choose Destination
J Colloid Interface Sci. 2017 Nov 15;506:58-65. doi: 10.1016/j.jcis.2017.07.030. Epub 2017 Jul 10.

Enhanced visible light photocatalytic hydrogen evolution over porphyrin hybridized graphitic carbon nitride.

Author information

1
Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, China.
2
Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
3
Tianjin Textile Fibre Inspection Institute, Tianjin 300192, China.
4
Department of Chemistry, School of Science, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China. Electronic address: jingyan@tju.edu.cn.

Abstract

Tetra (4-carboxyphenyl) porphyrin (TCPP) was loaded on the surface of Pt/g-C3N4 via a simple adsorption process, and the microstructure and chemical structure of the composites were characterized by high resolution transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV-visible diffused reflectance spectroscopy and photoluminescence spectroscopy. Loading TCPP onto Pt/g-C3N4 enhanced the visible-light-driven photocatalytic evolution of H2 from water. The TCPP/Pt/g-C3N4 composite with a TCPP loading of 1wt% had the highest photoactivity, which was 2.1 times higher than that of Pt/g-C3N4. This improvement is attributed to enhanced visible light utilization by the TCPP/Pt/g-C3N4 resulting from the strong visible light response of TCPP. In addition, the formed organic heterostructure between TCPP and g-C3N4 with overlapping bad gaps accelerates the electron transfer and inhibits the recombination of the photogenerated electrons and holes on g-C3N4.

KEYWORDS:

Hydrogen production; Photocatalytic; Porphyrin; g-C(3)N(4)

PMID:
28728030
DOI:
10.1016/j.jcis.2017.07.030

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center