KLI

The effect of graphitic carbon nitride precursors on the photocatalytic dye degradation of water-dispersible graphitic carbon nitride photocatalysts

Metadata Downloads
Abstract
In this study, water-dispersible graphitic carbon nitride (g-C3N4) was synthesized through chemical oxidation of
bulk g-C3N4 produced from different starting nitrogen-rich organic precursors such as dicyandiamide, melamine,
urea, and thiourea by thermal treatment. The effects of g-C3N4 precursors on water-dispersible g-C3N4 photocatalysts
were investigated using several characterization tools and photocatalytic degradation of methylene
blue (MB). Exfoliation of bulk g-C3N4 by chemical oxidation gave rise to the characteristic properties of waterdispersible
g-C3N4 such as a high surface area, thin-layered morphology, an increase in band gap, and significant
reduction in the recombination rate of photogenerated electron-hole pairs, which improved the photocatalytic
activity of water-dispersible g-C3N4 for MB photodegradation. The photocatalytic activities of water-dispersible
g-C3N4 photocatalysts were also strongly influenced by N-rich g-C3N4 precursors for bulk g-C3N4. The presence
of foreign atoms (sulfur, S) in thiourea induced the formation of sulfur-containing nanoporous water-dispersible
g-C3N4. The highest MB adsorption ability and charge separation efficiency of the S-containing nanoporous
water-dispersible g-C3N4 photocatalyst exhibited a synergistic effect on MB photodegradation, resulting in the
highest photocatalytic activity.
Author(s)
신은우웬 티 킴 안웬 푸 후이팜 탄 쭉
Issued Date
2021
Type
Article
Keyword
g-C3N4 precursorsThioureaWater-dispersibleS-containingCharge separationPhotocatalysis
DOI
10.1016/j.apsusc.2020.148027
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9219
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_elsevier_sciencedirect_doi_10_1016_j_apsusc_2020_148027&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,The%20effect%20of%20graphitic%20carbon%20nitride%20precursors%20on%20the%20photocatalytic%20dye%20degradation%20of%20water-dispersible%20graphitic%20carbon%20nitride%20photocatalysts&offset=0&pcAvailability=true
Publisher
APPLIED SURFACE SCIENCE
Location
네덜란드
Language
영어
ISSN
0169-4332
Citation Volume
537
Citation Number
1
Citation Start Page
148027
Citation End Page
148027
Appears in Collections:
Engineering > Chemical Engineering
Authorize & License
  • Authorize공개
Files in This Item:
  • There are no files associated with this item.

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.