Journal
RSC ADVANCES
Volume 12, Issue 52, Pages 33598-33604Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ra05867g
Keywords
-
Categories
Funding
- National Key Research and Development Program of China [2021YFB3802400]
- National Natural Science Foundation of China [52161037, U20A20237, 51871065, 51971068]
- Scientific Research and Technology Development Program of Guangxi [AD19110037, AA19182014, AD17195073, AA17202030-1]
- Guangxi Natural Science Foundation [2017JJB150085, 2019GXNSFGA245005]
- Innovation Project of GUET Graduate Education, China [2022YCXS197]
- Guangxi Bagui Scholar Foundation
- Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials
- Guangxi Advanced Functional Materials Foundation and Application Talents Small Highlands
- Chinesisch-Deutsche Kooperationsgruppe [GZ1528]
- Guilin Lijiang Scholar Foundation
- Science and Technology Development Project of Guilin [20210102-4, 20210216-1]
Ask authors/readers for more resources
In this study, nitrogen-rich g-C3N4 nanosheets were synthesized by a one-step thermal polymerization method. The self-doping and ultrathin structure of g-C3N4 resulted in excellent catalytic performance and the introduction of midgap states, achieving efficient separation of photogenerated carriers.
Graphitic carbon nitride (g-C3N4) has attracted enormous attention as a visible-light-responsive carbon-based semiconductor photocatalyst. However, fast charge recombination seriously limits its application. Therefore, it is urgent to modify the electronic structure of g-C3N4 to obtain excellent photocatalytic activity. Herein, we reported a one-step thermal polymerization synthesis of nitrogen-rich g-C3N4 nanosheets. Benefiting from the N self-doping and the ultrathin structure, the optimal CN-70 exhibits its excellent performance. A 6.7 times increased degradation rate of rhodamine B (K = 0.06274 min(-1)), furthermore, the hydrogen evolution efficiency also reached 2326.24 mu mol h(-1) g(-1) (lambda > 420 nm). Based on a series of characterizations and DFT calculations, we demonstrated that the N self-doping g-C3N4 can significantly introduce midgap states between the valence band and conduction band, which is more conducive to the efficient separation of photogenerated carriers. Our work provides a facile and efficient method for self-atom doping into g-C3N4, providing a new pathway for efficient photocatalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available