Graphitic carbon nitride/graphene oxide/reduced graphene oxide nanocomposites for photoluminescence and photocatalysis
Source abstract
Abstract
Abstract The study presents a modification of graphitic carbon nitride (g-C3N4) with graphene oxide (GO) and reduced graphene oxide (rGO) and investigation of photoluminescent and photocatalytic properties. The influence of GO and rGO lateral sizes used for the modification was investigated. The nanomaterials were characterized with atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance UV–vis spectroscopy (DR-UV-vis) and photoluminescence spectroscopy (PL). PL revealed that pristine graphitic carbon nitride and its nanocomposites with GO and rGO emitted up-converted photoluminescence (UCPL) which could contribute to the improvement of photocatalytic activity of the materials. The photoactivity was evaluated in a process of phenol decomposition under visible light. A hybrid composed of rGO nanoparticles (rGONPs, 4–135 nm) exhibited the highest photoactivity compared to rGO with size of 150 nm–7.2 μm and graphene oxide with the corresponding sizes. The possible reason of the superior photocatalytic activity is the most enhanced UCPL of rGONPs, contributing to the emission of light with higher energy than the incident light, resulting in improved photogeneration of electron-hole pairs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Ga2O3 and related materials · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Sand supported mixed-phase TiO2 photocatalysts for water decontamination applications10.1002/adem.201300259 ↗
2. Photobactericidal effects of TiO2 thin films at low temperature10.1016/j.jphotochem.2010.06.027 ↗
3. Strategies for the development of visible-light-driven photocatalysts for water splitting10.1246/cl.2004.1534 ↗
4. Photocatalytic activity of transition-metal-loaded titanium(IV) oxide powders suspended in aqueous solutions: correlation with electron–hole recombination kinetics10.1039/b008028o ↗
5. Graphitic carbon nitride materials: variation of structure and morphology and their use as metal-free catalysts10.1039/b800274f ↗
6. Graphitic carbon nitride materials: controllable synthesis and applications in fuel cells and photocatalysis10.1039/c2ee03479d ↗
7. A fantastic graphitic carbon nitride (g-C3N4) material: electronic structure: photocatalytic and photoelectronic properties10.1016/j.jphotochemrev.2014.04.002 ↗
8. Simple pyrolysis of urea into graphitic carbon nitride with recyclable adsorption and photocatalytic activity10.1039/c1jm12620b ↗
9. mpg-C3N4-catalyzed selective oxidation of alcohols using O2 and visible light10.1021/ja102866p ↗
10. TiO2–g-C3N4 composite materials for photocatalytic H2 evolution under visible light irradiation10.1016/j.jallcom.2010.09.201 ↗
11. Boron- and fluorine-containing mesoporous carbon nitride polymers: metal-free catalysts for cyclohexane oxidation10.1002/anie.201000120 ↗
12. Sulfur-mediated synthesis of carbon nitride: band-gap engineering and improved functions for photocatalysis10.1039/C0EE00418A ↗
13. The role of graphene oxide content on the adsorption-enhanced photocatalysis of titanium dioxide/graphene oxide composites10.1016/j.cej.2011.03.060 ↗
14. Preparation and electrochemical characterization of Pt-supported flake-like graphitic carbon nitride on reduced graphene oxide as fuel cell catalysts10.1149/2.0341510jes ↗
15. Jaroniec preparation enhanced visible-light photocatalytic H2-production activity of graphene/C3N4 composites10.1021/jp200953k ↗
16. Metal-free activation of dioxygen by graphene/g-C3N4 nanocomposites: functional dyads for selective oxidation of saturated hydrocarbons10.1021/ja200997a ↗
17. Improved synthesis of graphene oxide10.1021/nn1006368 ↗
18. Enhancing thermoelectric properties of organic composites through hierarchical nanostructures10.1038/srep03448 ↗
19. Photodegradation performance of g-C3N4 fabricated by directly heating melamine10.1021/la900923z ↗
20. Metal-containing carbon nitride compounds: a new functional organic-metal hybrid material10.1002/adma.200802627 ↗
21. Graphitic carbon nitride materials: variation of structure and morphology and their use as metal-free catalysts10.1039/b800274f ↗
22. Synthesized g-C3N4 for Photocatalytic degradation of methylene blue
23. Graphene oxide synthesized by using modified Hummers approach
24. Study of oxygen-containing groups in a series of graphite oxides: physical and chemical characterization10.1016/0008-6223(95)00120-3 ↗
25. DRIFT study of deuterium-exchanged graphite oxide10.1016/j.carbon.2005.07.013 ↗
26. carbon nitrides similar to the symmetric triangular form of melon10.1039/b007165j ↗
27. Preparation and characterization of graphitic carbon nitride through pyrolysis of melamine10.1007/s00339-008-4816-4 ↗
28. Synthesis of g-C3N4 nanoparticles in mesoporous silica host matrices10.1002/adma.200401756 ↗
29. Controllable electrostatic self-assembly of sub-3nm graphene quantum dots incorporated into mesoporous Bi2MoO6 frameworks: efficient physical and chemical simultaneous co-catalysis for photocatalytic oxidation10.1039/C6TA02371A ↗
30. Carbon dots decorated graphitic carbon nitride as an efficient metal-free photocatalyst for phenol degradation10.1016/j.apcatb.2015.06.056 ↗
31. Feroxyhyte nanoflakes coupled to up-converting carbon nanodots: a highly active magnetically recoverable, Fenton-like photocatalyst in the visible-NIR range10.1039/C5CC05387K ↗