Abstract:Proline doped g-C3N4 nanosheets were successfully prepared by a feasible hydrothermal and calcination approach. Properties of the photocatalysts, including structure, morphology, composition and photoelectric characteristics, were systematically analyzed by FTIR, XRD, SEM, BET, XPS, UV-vis DRS, PL, and Electrochemical workstation. The results showed that the addition of proline could autonomously exfoliate the precursors to make nanosheets of g-C3N4 and increase the specific surface area of the catalysts. Furthermore, the energy band structure of the catalysts, visible light absorption ability, and the separation rate photogenerated carriers of as-prepared g-C3N4 were remarkably improved. The photocatalytic performance was investigated by degradation of Rhodamine B under simulated visible light irradiation. The optimal doping conditions was herein obtained. At 1% addition amount of doped proline (PCN-1%), over 99% pollutants could be degraded under 60min irradiation of visible light. The degradation rate of PCN-1% (0.0271min-1) was 10.04 times compared with that of the traditional bulk carbon nitride (BCN, 0.0027min-1), evidencing the notably improved photocatalysis properties of g-C3N4.
蒋军, 倪千千, 可欣, 烟征. 脯氨酸掺杂g-C3N4纳米片的制备及其对RhB的降解[J]. 中国环境科学, 2022, 42(7): 3112-3120.
JIANG Jun, NI Qian-qian, KE Xin, YAN Zheng. Preparation of g-C3N4 nanosheets doped with proline and its degradation of RhB. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(7): 3112-3120.
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