Facile Fabrication of TiO2 Quantum Dots-Anchored g-C3N4 Nanosheets as 0D/2D Heterojunction Nanocomposite for Accelerating Solar-Driven Photocatalysisopen access
- Authors
- Lee, Jin-Hyoek; Jeong, Sang-Yun; Son, Young-Don; Lee, Sang-Wha
- Issue Date
- May-2023
- Publisher
- MDPI
- Keywords
- TiO2 quantum dots; g-C3N4 nanosheet; 0D/2D heterojunction; solar-driven photocatalysis
- Citation
- NANOMATERIALS, v.13, no.9
- Journal Title
- NANOMATERIALS
- Volume
- 13
- Number
- 9
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88049
- DOI
- 10.3390/nano13091565
- ISSN
- 2079-4991
- Abstract
- TiO2 semiconductors exhibit a low catalytic activity level under visible light because of their large band gap and fast recombination of electron-hole pairs. This paper reports the simple fabrication of a 0D/2D heterojunction photocatalyst by anchoring TiO2 quantum dots (QDs) on graphite-like C3N4 (g-C3N4) nanosheets (NSs); the photocatalyst is denoted as TiO2 QDs@g-C3N4. The nanocomposite was characterized via analytical instruments, such as powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, t orange (MO) under solar light were compared. The TiO2 QDs@g-C3N4 photocatalyst exhibited 95.57% MO degradation efficiency and similar to 3.3-fold and 5.7-fold higher activity level than those of TiO2 QDs and g-C3N4 NSs, respectively. Zero-dimensional/two-dimensional heterojunction formation with a staggered electronic structure leads to the efficient separation of photogenerated charge carriers via a Z-scheme pathway, which significantly accelerates photocatalysis under solar light. This study provides a facile synthetic method for the rational design of 0D/2D heterojunction nanocomposites with enhanced solar-driven catalytic activity.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
- 보건과학대학 > 의용생체공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88049)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.