TY  - JOUR
A1  - Xu, Jingsan
A1  - Brenner, Thomas J. K.
A1  - Chen, Zupeng
A1  - Neher, Dieter
A1  - Antonietti, Markus
A1  - Shalom, Menny
T1  - Upconversion-agent induced improvement of g-C3N4 photocatalyst under visible light
JF  - ACS applied materials & interfaces
N2  - Herein, we report the use of upconversion agents to modify graphite carbon nitride (g-C3N4) by direct thermal condensation of a mixture of ErCl3 center dot 6H(2)O and the supramolecular precursor cyanuric acid-melamine. We show the enhancement of g-C3N4 photoactivity after Er3+ doping by monitoring the photodegradation of Rhodamine B dye under visible light. The contribution of the upconversion agent is demonstrated by measurements using only a red laser. The Er3+ doping alters both the electronic and the chemical properties of g-C3N4. The Er3+ doping reduces emission intensity and lifetime, indicating the formation of new, nonradiative deactivation pathways, probably involving charge-transfer processes.
KW  - metal-free photocatalysis
KW  - upconversion
KW  - carbon nitride
KW  - RhB photodegradation
Y1  - 2014
U6  - https://doi.org/10.1021/am5051263
SN  - 1944-8244
VL  - 6
IS  - 19
SP  - 16481
EP  - 16486
PB  - American Chemical Society
CY  - Washington
ER  -