TY  - JOUR
A1  - Shalom, Menny
A1  - Inal, Sahika
A1  - Fettkenhauer, Christian
A1  - Neher, Dieter
A1  - Antonietti, Markus
T1  - Improving Carbon Nitride Photocatalysis by Supramolecular Preorganization of Monomers
T2  - Journal of the American Chemical Society
N2  - Here we report a new and simple synthetic pathway to form ordered, hollow carbon nitride structures, using a cyanuric acid melamine (CM) complex in ethanol as a starting product. A detailed analysis of the optical and photocatalytic properties shows that optimum hollow carbon nitride structures are formed after 8 h of condensation. For this condensation time, we find a significantly reduced fluorescence intensity and lifetime, indicating the formation of new, nonradiative deactivation pathways, probably involving charge-transfer processes. Enhanced charge transfer is seen as well from a drastic increase of the photocatalytic activity in the degradation of rhodamine B dye, which is shown to proceed via photoinduced hole transfer. Moreover, we show that various CM morphologies can be obtained using different solvents, which leads to diverse ordered carbon nitride architectures. In all cases, the CM-C3N4 structures exhibited superior photocatalytic activity compared to the bulk material. The utilization of CM hydrogen-bonded complexes opens new opportunities for the significant improvement of carbon nitride synthesis, structure, and optical properties toward an efficient photoactive material for catalysis.
Y1  - 2013
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35002
SN  - 0002-7863
VL  - 135
IS  - 19
SP  - 7118
EP  - 7121
PB  - American Chemical Society
CY  - Washington
ER  -