Tubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue

Abstract

Tubular g-C3N4 grown on a carbon framework increased the surface area of bulk g-C3N4, enhanced the absorption of visible light and promoted the photocatalytic performance.

Sulfur-Doped g-C3N4 Heterojunctions for Efficient Visible Light Degradation of Methylene Blue

“…Kinetic experiment data were adjusted to a pseudo-first-order reaction model (ln ( C / C 0 ) = − k app t ), which was used to calculate the apparent reaction rate constant ( k app ) (see the correlation coefficients of all samples in the Supporting Information ). 48 , 50 , 51 From Figure 5 , eCN-h had the best performance with a k app of 7.9 × 10 –3 min –1 , followed by bCN-B with a k app of 6.6 × 10 –3 min –1 . In the case of the heterojunctions, the first to be fabricated were CN-B/h-50%, CN-B/S-50%, and CN-h/S-50%.…”

“…The k app value reported for MB degradation by the tubular g-C 3 N 4 /carbon framework is 1.32 × 10 −2 min −1 using visible light irradiation by a Xe lamp, which corresponds to similar conditions used in this work. 51 Other reports present higher k app values; however, the experimental conditions and the dye used are not directly comparable.…”

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

“…Using a one-step chemical vapor deposition method, tubular g-C 3 N 4 was deposited on a support carrier as a porous carbonized grapefruit peel. Initially, the carbon framework was prepared from a freeze-dried grapefruit peel by calcination at 750 • C. After that, the obtained carbon framework was placed in urea powder and heated at 550 • C for 2 h. During this process, a large amount of g-C 3 N 4 was deposited on the carbonized grapefruit peel [108]. In addition, the photocatalytic degradation of methylene blue was studied in comparison with bulk g-C 3 N 4 .…”

Efficient photo-oxidation of bisphenol a and tetracycline through sulfur-doped g-C3N4/CD heterojunctions

“…19 However, bulk g-C 3GC faces limitations including high defect density, fast charge recombination, and low specific surface area. 20 To address these challenges, researchers have explored sensitized doping as a strategy to boost the photocatalytic activity of g-C 3 N 4 . 21 Structural defects are created in the g-C 3 N 4 lattice by adding non-metallic elements like sulphur, which optimises the electron distribution and changes the band gap location.…”

“…Graphitic carbon nitride (g-C3N4) (15) is one of the several types of photocatalysts that has drawn interest since it is devoid of metals and reacts to visible light making it appropriate for a variety of uses, such the evolution of hydrogen or oxygen (16,17), CO2 reduction (18), and environmental remediation (19). However, bulk g-C3GC faces limitations including high defect density, fast charge recombination, and low specific surface area (20). To address these challenges, researchers have explored sensitized doping as a strategy to boost the photocatalytic activity of g-C3N4 (21).…”