The facile synthesis of graphitic carbon nitride from amino acid and urea for photocatalytic H2 production

作者：Li, Guosheng; Shi, Jiale; Zhang, Guigang; Fang, Yuanxing; Anpo, Masakazu; Wang, Xinchen^*

来源：Research on Chemical Intermediates, 2017, 43(9): 5137-5152.

DOI：10.1007/s11164-017-3041-1

• Photocatalysis
• Graphitic carbon nitride
• Glycine
• Co-condensation
• Hydrogen production

We report on the facile synthesis of g-C3N4 based polymers by co-condensing urea with glycine for photocatalytic hydrogen evolution. The as-prepared photocatalysts were then characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, UV-Vis diffuse reflectance spectroscopy, photoluminescence emission spectrometry, electron paramagnetic resonance spectrometry and transmission electron microscopy. Compared with pristine g-C3N4, obtained from direct pyrolysis of urea, the CNU-G(5) photocatalyst showed largely enhanced photocatalytic H-2 activities about 75 mu mol h(-1), which is 5 times higher than of the pristine CNU. The enhanced activities are ascribed to the larger specific area surface, strengthened optical absorption and improved electron transport ability. Our work opens up a new pathway for the synthesis graphitic carbon nitride photocatalysts with glycine modification to enhance photocatalytic activities.

• 出版日期2017-9
• 单位福州大学