In this section
@article{Dias:2018:10.1021/acsaem.8b01441,
author = {Dias, E and Christoforidis, K and Francas, L and Petit, C},
doi = {10.1021/acsaem.8b01441},
journal = {ACS Applied Energy Materials},
pages = {6524--6534},
title = {Tuning thermally treated graphitic carbon nitride for H evolution and CO photoreduction: The effects of material properties and mid-gap states},
url = {http://dx.doi.org/10.1021/acsaem.8b01441},
volume = {1},
year = {2018}
}
TY - JOUR
AB - Graphitic carbon nitride (g-C3N4) is regarded as an attractive photocatalyst for solar fuel production, i.e., H2 evolution and CO2 photoreduction. Yet, its structural, chemical and optoelectronic properties are very much dependent on the synthesis method and are likely to contribute differently whether H2 evolution or CO2 reduction is considered. Little is known about this aspect making it difficult to tailor g-C3N4 structure and chemistry for a specific photoreaction. Herein, we create g-C3N4 of varying chemical, structural and optical features by applying specific thermal treatments and investigating the effects of the materials properties on solar fuel production. The samples were characterized across scales using spectroscopic, analytical and imaging tools, with particular attention given to the analyses of trap states. In the case of H2 evolution, the reaction is controlled by light absorption and charge separation enabled by the presence of trap states created by N vacancies. In the case of CO2 photoreduction, reactant adsorption appears as a dominating factor. The analyses also suggest that the thermal treatment leads to the formation of trap states located close to the valence band of g-C3N4.
AU - Dias,E
AU - Christoforidis,K
AU - Francas,L
AU - Petit,C
DO - 10.1021/acsaem.8b01441
EP - 6534
PY - 2018///
SN - 2574-0962
SP - 6524
TI - Tuning thermally treated graphitic carbon nitride for H evolution and CO photoreduction: The effects of material properties and mid-gap states
T2 - ACS Applied Energy Materials
UR - http://dx.doi.org/10.1021/acsaem.8b01441
UR - http://hdl.handle.net/10044/1/65635
VL - 1
ER -