Back to Search
Start Over
Supramolecule self-assembly synthesis of condensed C-TA/g-C3N4 composites for promoting charge transfer and photocatalytic H2 evolution.
- Source :
-
Applied Surface Science . Feb2020, Vol. 504, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- • The C-TA/g-C 3 N 4 was obtained by supramolecular self-assembly and thermal condensation. • The TA with groups OH can link with melamine promoting the condensation of g-C 3 N 4. • The C-TA/g-C 3 N 4 with decreased interlayer distance effectively promote charge transfer. • The condensed C-TA/g-C 3 N 4 exhibit superior photocatalytic H2 evolution performance. Design of highly condensed g-C 3 N 4 is a prospective way to optimize the photoreactivity of g-C 3 N 4 as it possesses condensed structure with decreased interlayer spacing, which benefits both charge transfer and light harvesting. Herein, we report that novel condensed carbonized-tannic acid (C-TA)/g-C 3 N 4 composites have been acquired via a supramolecular self-assembly of TA and melamine into TA/melamine precursors followed by thermal condensation. The acquired condensed C-TA/g-C 3 N 4 composites present superior visible-light photocatalytic activity for H 2 evolution. The 1 wt% C-TA/g-C 3 N 4 composite shows 4.2 times enhancement of photocatalytic activity for H 2 evolution compared to pristine g-C 3 N 4. The TA with distinct adhesion properties and functional groups of OH, which is firmly linked with melamine, can confine the melamine inside to promote the condensation to gain more condensed g-C 3 N 4. The condensed C-TA/g-C 3 N 4 composites with decreased interlayer distance effectively promote charge transfer and photocatalytic H 2 evolution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 504
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 141580907
- Full Text :
- https://doi.org/10.1016/j.apsusc.2019.144354