Preparation of vanadium-doped g-C3N4 nanotubes via supramolecular self-assembly method and its photocatalytic hydrogen production performance
JING Huijuan
LUAN Mengge
YE Haolin
ZHANG Chen
DING Shuangshuang
ZHOU Bingxin
Abstract：Graphitic carbon nitride(g-C3N4),a visible-light-responsive photocatalyst,faces the challenge of simultaneously achieving doping modification and low-dimensional morphology control.In this study,a supramolecular precursor was formed by connecting melamine and cyanuric acid through triple hydrogen bonds.Vanadium-doped g-C3N4 nanotubes were prepared by adding vanadium salts,followed by drying and calcination.Vanadium doping induced the self-fission of the supramolecular precursor into nanotubes,which optimized the electronic structure of g-C3N4 and increased its specific surface area.The effects of va-nadium doping on the photoelectrochemical properties and photocatalytic hydrogen production performance of g-C3N4 were systematically investigated.The results showed that the highest hydrogen production per-formance of vanadium-doped g-C3N4 under visible light irradiation was 599.1 μmol·h-1·g-1,which was 2.8 times that of pure g-C3N4 This enhancement was mainly attributed to the synergistic effect of the broadened light absorption range,reduced electron transfer resistance,and increased specific surface area.
Keywords：g-C3N4supramoleculenanotubephotocatalytic hydrogen production
Publication Date：2025-12-31
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：8( 927-934 )