Journal
APPLIED SURFACE SCIENCE
Volume 473, Issue -, Pages 70-76Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.12.122
Keywords
Modified MoS2/GQDs heterostructures; Density functional theory calculations; Type-II band alignments; Light harvesting; Photocatalysis
Categories
Funding
- National Natural Science Foundation of China [U1510125, 51272301, 51502270, 21703209]
- State Key Laboratory of Solidification Processing in NWPU [SKLSP201719]
- Shanxi Province Science Foundation [201601D021059]
- Shanxi Province Science Foundation for Youths [201701D221087]
- Specialized Research Fund for Sanjin Scholars Program of Shanxi Province
- Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi
- North University of China Fund for Distinguished Young Scholars
- 333 talent project research
- North University of China Fund for Scientific Innovation Team
Ask authors/readers for more resources
Solar energy absorption and photo-induced charge separation and transfer are crucial to enhance photocatalytic properties. Here, the structural, electronic and photocatalytic properties of graphene quantum dots (GQDs), pure and O, N, S-v-modified MoS2 monolayers, GQDs-based heterostructures have been studied by theoretical calculations based on density functional theory. Compared with the GQDs, the obvious red shifts of the absorption peaks can be observed, the absorption intensities increases evidently, and the typical type-II band alignments can be formed after the construction of the pure, O, N, S-v-MoS2/GQDs heterostructures, which is beneficial to promote photo-induced charge transfer and more visible light harvesting. Subsequently, it is worth mentioning that N-MoS2/GQDs heterostructure also has the lower binding energy and higher absorption in the infrared region and impactful photo-induced electron injection from GQDs to N-MoS2 surface. Therefore, this work provides an instrumental and promising approach in designing new GQDs-based heterostructures to enhance the solar energy absorption and conversion.
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