Back to Search
Start Over
Facile urea-assisted precursor pre-treatment to fabricate porous g-C3N4 nanosheets for remarkably enhanced visible-light-driven hydrogen evolution.
- Source :
-
Journal of Colloid & Interface Science . Dec2018, Vol. 532, p280-286. 7p. - Publication Year :
- 2018
-
Abstract
- Graphical abstract Abstract Hydrogen generation photocatalyzed by low-cost graphite carbon nitride (g-C 3 N 4) is a fascinating and effective route to solve energy crisis, but is mainly limited by the few reactive sites, low carrier separation efficiency and mediocre visible-light utilization. In this work, these limitations were tackled through a facile eco-friendly precursor pretreatment by tuning bulk g-C 3 N 4 into porous structure. This pretreatment restricted agglomeration in the subsequent condensation and created more porous channels for charge carrier transfer and more surface active sites for reaction. The modified g-C 3 N 4 has larger surface area, broader visible-light response, enhanced electron migration capacity and prolonged lifetime of photogenerated carriers. These well-amended g-C 3 N 4 nanosheets possess an average hydrogen evolution rate 5.7 times that of bulk g-C 3 N 4. This work affords a facile, eco-friendly and scalable strategy to design or synthesize other porous materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *UREA
*VISIBLE spectra
*NITRIDES
*CHARGE transfer
*HYDROGEN evolution reactions
Subjects
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 532
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 131729908
- Full Text :
- https://doi.org/10.1016/j.jcis.2018.07.108