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Updated: Aug 19, 2025

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Published on: February 11, 2016
Simultaneously improving O2 adsorption and activation for H2O2 photogeneration on K-doped-carbon nitride
Zehao Li1,2, Yufei Chen2
1Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou 510070, China. zehaoli512@qq.com.
Abstract:
O2 adsorption and activation are important factors in H2O2 production. Here, polymeric carbon nitride (PCN) with K was prepared using a hydrothermal method. Modified PCN with strong Lewis acidic-basic sites is favorable for O2 adsorption and activation from air, and could quickly supplement the oxygen adsorbed from the air for the production of a high H2O2 yield (2102.11 μmol g-1), and the yield is 42 times higher than that of pristine PCN in the atmosphere. The apparent quantum yields (AQYs) are 3.87% and 2.62% at 385 and 420 nm in the atmosphere, respectively.
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