TY - GEN
T1 - Graphitic carbon nitride modified by silicon for improved visible-light-driven photocatalytic hydrogen production
AU - Wu, Po
AU - Shi, Jinwen
AU - Chen, Jie
AU - Wang, Bin
AU - Guo, Liejin
PY - 2013
Y1 - 2013
N2 - In this work, composites of silica and graphitic carbon nitride (g-C3N4) were conveniently synthesized through polymerization of melamine and ethyl silicate. Some basic physicochemical properties of these metal-free photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), Fourier transform infrared spectrometer (FTIR) spectra, transmission electron microscope (TEM), UV-visible diffuse reflectance spectrum and N2 adsorption-desorption measurement. The XRD patterns of all the prepared materials were dominated by the characteristic (002) peak at 27.5° of a graphitic structure, indicating that the induced Si did not destroy the crystal structure of g-C3N4). As the initial molar ratio of Si to C increased, enhanced photocatalytic activity was observed for H2 evolution from a triethanolamine aqueous solution under visible-light irradiation over the series of composites. It was proved that the introduction of Si resulted in large surface area, which is favorable for reactant-transfer and charge-migration, beneficial for photocatalysis.
AB - In this work, composites of silica and graphitic carbon nitride (g-C3N4) were conveniently synthesized through polymerization of melamine and ethyl silicate. Some basic physicochemical properties of these metal-free photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), Fourier transform infrared spectrometer (FTIR) spectra, transmission electron microscope (TEM), UV-visible diffuse reflectance spectrum and N2 adsorption-desorption measurement. The XRD patterns of all the prepared materials were dominated by the characteristic (002) peak at 27.5° of a graphitic structure, indicating that the induced Si did not destroy the crystal structure of g-C3N4). As the initial molar ratio of Si to C increased, enhanced photocatalytic activity was observed for H2 evolution from a triethanolamine aqueous solution under visible-light irradiation over the series of composites. It was proved that the introduction of Si resulted in large surface area, which is favorable for reactant-transfer and charge-migration, beneficial for photocatalysis.
KW - Graphitic carbon nitride
KW - Photocatalytic hydrogen generation
KW - Porosity
UR - https://www.scopus.com/pages/publications/84875738942
M3 - 会议稿件
AN - SCOPUS:84875738942
SN - 9781118205976
T3 - Ceramic Engineering and Science Proceedings
SP - 137
EP - 148
BT - Nanostructured Materials and Nanotechnology V - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
T2 - Nanostructured Materials and Nanotechnology V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Y2 - 22 January 2012 through 27 January 2012
ER -
