Construction of 2D/2D TiO2/g-C3N4 nanosheet heterostructures with improved photocatalytic activity
Source abstract
Abstract
Abstract Constructing two-dimensional (2D) heterostructure is an effective method to obtain highly efficient photocatalysts. In this work, 2D/2D TiO2/g-C3N4 heterostructures were constructed via in-situ growth of TiO2 nanosheets on the surface of g-C3N4 nanosheets by a facile hydrothermal co-assembly technique. The increased dispersion is favorable to expose more vacancies, which is beneficial to the enhancement of visible light absorption. This unique 2D/2D heterostructure exhibits ultrathin thickness and larger interfacial contact area, which results in shorter migration distance of photo-generated carriers to the surface and faster participation in photocatalytic water splitting. As expected, the optimized TiO2/g-C3N4 nanocomposites showed a higher photocatalytic hydrogen evolution performance under visible light irradiation than that of pristine g-C3N4 and TiO2 nanosheets. The improved performance can be attributed to the ultrathin nanosheet structure, the intimate interfacial contact and the presence of surface oxygen vacancies. More appealingly, this environment-friendly 2D/2D TiO2/g-C3N4 nanohybrid would attract more attention in water splitting.
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 (44)
Show source-provided references
1. Heterogeneous photocatalyst materials for water splitting10.1039/B800489G ↗
2. Semiconductor-based photocatalytic hydrogen generation10.1021/cr1001645 ↗
3. Metal-free photocatalysts for various applications in energy conversion and environmental purification10.1039/C6GC02856J ↗
4. The pulsed laser-induced Schottky junction via in-situ forming Cd clusters on CdS surfaces toward efficient visible light-driven photocatalytic hydrogen evolution10.1016/j.apcatb.2019.117967 ↗
5. Oxygenated monolayer carbon nitride for excellent photocatalytic hydrogen evolution and external quantum efficiency10.1016/j.nanoen.2016.06.042 ↗
6. Single-Atom engineering of directional charge transfer channels and active sites for photocatalytic hydrogen evolution
7. A metal-free polymeric photocatalyst for hydrogen production fromwater under visible light10.1038/nmat2317 ↗
8. Activation of graphitic carbon nitride (g-C3N4) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase10.1039/c3ta10472a ↗
9. Control of energy band, layer structure and vacncy defect of graphitic carbon nitride by intercalated hydrogen bond effect of NO3− toward improving photocatalytic performance10.1016/j.cej.2018.09.112 ↗
10. g-C3N4-based photocatalysts for hydrogen generation10.1021/jz500546b ↗
11. Boosting the photocatalytic hydrogen evolution activity of g-C3N4 nanosheets by Cu2(OH)2CO3− modification and dye-sensitization10.1039/C8DT03579B ↗
12. In situ microwave-assisted synthesis of porous N-TiO2/g-C3N4 heterojunctions with enhanced visible-light photocatalytic properties10.1021/ie402820v ↗
13. Preparation and photocatalytic properties of g-C3N4/TiO2 hybrid composite10.1016/S1005-0302(10)60149-1 ↗
14. Interface engineered construction of porous g-C3N4 /TiO2 heterostructure for enhanced photocatalysis of organic pollutants10.1016/j.apsusc.2018.01.106 ↗
15. Nanotube-confinement induced size-controllable g-C3N4 quantum dots modified single-crystalline TiO2 nanotube arrays for stable synergetic photoelectrocatalysis10.1016/j.nanoen.2015.10.011 ↗
16. Interfacial construction of zero-dimensional/one-dimensional g-C3N4 nanoparticles/TiO2 nanotube arrays with Z-scheme heterostructure for improved photoelectrochemical water splitting10.1021/acssuschemeng.8b05392 ↗
17. Effect of the calcination temperature on the visible light photocatalytic activity of direct contact Z-scheme g-C3N4-TiO2 heterojunction10.1016/j.apcatb.2017.04.061 ↗
18. Enhanced visible light activity on direct contact Z-scheme g-C3N4-TiO2 photocatalyst10.1016/j.apsusc.2016.06.145 ↗
19. Photocatalytic activity enhancement of core-shell structure g-C3N4@TiO2 via controlled ultrathin g-C3N4 layer10.1016/j.apcatb.2017.08.004 ↗
20. Synthesis of core-shell TiO2 @g-C3N4 hollow microspheres for efficient photocatalytic degradation of Rhodamine B under visible light10.1016/j.apsusc.2017.07.282 ↗
21. TiO2 nanobelts with a uniform coating of g-C3N4 as a highly effective heterostructure for enhanced photocatalytic activities10.1016/j.jssc.2014.08.016 ↗
22. Face-to-face interfacial assembly of ultrathin g-C3N4 and anatase TiO2 nanosheets for enhanced solar photocatalytic activity10.1021/acsami.7b10010 ↗
23. Comparison of TiO2 and g-C3N4 2D/2D nanocomposites from three synthesis protocols for visible-light induced hydrogen evolution10.1039/C8CY00965A ↗
24. Large-scale synthesis of metastable TiO2(B) nanosheets with atomic thickness and their photocatalytic properties10.1039/c0cc02327b ↗
25. Photochemical route for synthesizing atomically dispersed palladium catalystse10.1126/science.aaf5251 ↗
26. Graphene-like carbon nitride nanosheets for improved photocatalytic activities10.1002/adfm.201200922 ↗
27. An oxygen-vacancy-rich Z-scheme g-C3N4/Pd/TiO2 heterostructure for enhanced visible light photocatalytic performance10.1016/j.apsusc.2018.01.144 ↗
28. Construction of 2D SnS2/g-C3N4 Z-scheme composite with superior visible-light photocatalytic performance10.1016/j.apsusc.2018.10.118 ↗
29. Fe-doped and -mediated graphitic carbon nitride nanosheets for enhanced photocatalytic performance under natural sunlight10.1039/c3ta15358d ↗
30. 2D/2D g-C3N4/MgFe MMO nanosheet heterojunctions with enhanced visible-light photocatalytic H2 production10.1016/j.jallcom.2018.08.028 ↗
31. Z-scheme BCN-TiO2 nanocomposites with oxygen vacancy for high efficiency visible light driven hydrogen production10.1016/j.ijhydene.2017.09.125 ↗
32. Selective breaking of hydrogen bonds of layered carbon nitride for visible light photocatalysis10.1002/adma.201601567 ↗
33. Synergetic promotional effect of oxygen vacancy-rich ultrathin TiO2 and photochemical induced highly dispersed Pt for photoreduction of CO2 with H2O10.1016/j.apcatb.2018.12.028 ↗
34. Ti3+ self-doped mesoporous black TiO2/SiO2/g-C3N4 sheets heterojunctions as remarkable visible-lightdriven photocatalysts10.1016/j.apcatb.2017.12.069 ↗
35. Visible-light-driven oxygen vacancies and Ti3+ co-doped TiO2 coatings prepared by mechanical coating and carbon reduction10.1016/j.materresbull.2017.08.023 ↗
36. Nitrogen self-doped graphitic carbon nitride as efficient visible light photocatalyst for hydrogen evolution10.1039/C5TA02257F ↗
37. One step synthesis of oxygen doped porous graphitic carbon nitride with remarkable improvement of photo-oxidation activity: role of oxygen on visible light photocatalytic activity10.1016/j.apcatb.2017.01.058 ↗
38. Significant enhancement of visible-light-driven hydrogen evolution by structure regulation of carbon nitrides10.1021/acsnano.7b08100 ↗
39. Investigating the role of tunable nitrogen Vacancies in graphitic carbon nitride nanosheets for efficient visible-light-driven H2 evolution and CO2 reduction10.1021/acssuschemeng.7b01477 ↗
40. Effect of annealing ambience on the formation of surface/bulk oxygen vacancies in TiO2 for photocatalytic hydrogen evolution10.1016/j.apsusc.2017.09.144 ↗
41. In situ synthesis of ternary Zn0.5Cd0.5S (0D)/RGO (2D)/g-C3N4 (2D) heterostructures with efficient photocatalytic H2 generation activity10.1016/j.matlet.2018.11.047 ↗
42. Interlayer interaction in ultrathin nanosheets of graphitic carbon nitride for efficient photocatalytic hydrogen evolution10.1016/j.jcat.2017.06.020 ↗
43. Structuring phase junction between tri- s -triazine and triazine crystalline C3N4 for efficient photocatalytic hydrogen evolution10.1016/j.apcatb.2018.01.023 ↗
44. Urea-modified carbon nitrides: enhancing photocatalytic hydrogen evolution by rational defect engineering10.1002/aenm.201602251 ↗