Constructing S‐scheme charge separation in cobalt phthalocyanine/oxygen‐doped g‐C
                    3
                    N
                    4
                    heterojunction with enhanced photothermal‐assisted photocatalytic H
                    2
                    evolution

Wei‐Long Shi; Yu‐Xing Shi; Ling‐Ling Li; Jia‐Lin Lu; Xin‐Hai Sun; Xin Du; Feng Guo; Chang‐Yu Lu

doi:10.1007/s12598-023-02403-z

journal article Nov 06, 2023

Constructing S‐scheme charge separation in cobalt phthalocyanine/oxygen‐doped g‐C 3 N 4 heterojunction with enhanced photothermal‐assisted photocatalytic H 2 evolution

Wei‐Long Shi Yu‐Xing Shi Ling‐Ling Li Jia‐Lin Lu Xin‐Hai Sun Xin Du

Feng Guo

Chang‐Yu Lu

Rare Metals Vol. 43 No. 1 pp. 198-211 · Wiley

View at Publisher Save 10.1007/s12598-023-02403-z

Abstract

Abstract

Hydrogen acquisition from solar energy is an effective way to address energy crisis, which makes the development of efficient photocatalysts become the main direction of scientific research. Herein, cobalt phthalocyanine/oxygen‐doped g‐C
3
N
4
(CoPc/OCN) S‐scheme heterojunction photocatalyst was designed by coupling multi‐step calcination with solvothermal method for enhanced photothermal‐assisted photocatalytic H
2
evolution. The multi‐step calcined g‐C
3
N
4
is easier for O‐doping formation, and the ethanol solvothermal strategy is utilized to enhance the dispersion of CoPc on OCN nanosheet surface and forms sufficient S‐scheme heterojunction through H‐bonds. In addition, the active sites and excellent photothermal properties of CoPc itself further improve the integrated photocatalytic activity of CoPc/OCN S‐scheme heterojunction. The optimal photocatalytic hydrogen evolution rate of CoPc/OCN S‐scheme heterojunction photocatalyst reached 9.56 mmol·g
−1
·h
−1
, which is 2.69 and 1.23 times higher than that of CN and OCN, respectively. This work provides a valuable design idea and scheme for enhancing the multi‐factor co‐assisted photocatalytic H
2
evolution performance.

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Metrics

156

Citations

78

References

Details

Published: Nov 06, 2023
Vol/Issue: 43(1)
Pages: 198-211
License: View

Authors

W

Wei‐Long Shi

School of Material Science and Engineering Jiangsu University of Science and Technology 212003 Zhenjiang China

Y

Yu‐Xing Shi