EFFECTS OF CALCINATION CONDITION ON PHOTOCATALYTIC PROPERTY OF G-C<sub>3</sub>N<sub>4</sub> PREPARED THROUGH THERMAL POLYMERIZATION AND ITS MACHANISM

ZHAO Fang-yu; HU Xiao-min; GUO Peng-yao

doi:10.13205/j.hjgc.202105008

Volume 39 Issue 5

Jan. 2022

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ZHAO Fang-yu, HU Xiao-min, GUO Peng-yao. EFFECTS OF CALCINATION CONDITION ON PHOTOCATALYTIC PROPERTY OF G-C3N4 PREPARED THROUGH THERMAL POLYMERIZATION AND ITS MACHANISM[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(5): 55-60,70. doi: 10.13205/j.hjgc.202105008

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ZHAO Fang-yu, HU Xiao-min, GUO Peng-yao. EFFECTS OF CALCINATION CONDITION ON PHOTOCATALYTIC PROPERTY OF G-C₃N₄ PREPARED THROUGH THERMAL POLYMERIZATION AND ITS MACHANISM[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(5): 55-60,70. doi: 10.13205/j.hjgc.202105008

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EFFECTS OF CALCINATION CONDITION ON PHOTOCATALYTIC PROPERTY OF G-C₃N₄ PREPARED THROUGH THERMAL POLYMERIZATION AND ITS MACHANISM

doi: 10.13205/j.hjgc.202105008

College of Resources and Civil Engineering, Northeast University, Shenyang 110819, China

Received Date: 2020-09-03
Available Online: 2022-01-17

Abstract

Abstract

In this paper, graphite phase carbon nitride was prepared by thermal polymerization process using melamine and dilute nitric acid as raw materials. Effects of calcination temperature on the photocatalytic activity to degradation of Rhodamine B (RhB) of the graphite phase carbon nitride were researched. Their morphologies, crystal structure, chemical composition of as prepared graphite phase carbon nitride were characterized by means of SEM, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS),Fourier transform infrared spectroscopy(FT-IR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) and photoluminescence spectra (PL). The photocatalytic performance of g-C₃N₄ was tested by photo-decomposition of RhB and the experiment result manifested that the prepared graphite phase carbon nitride samples showed best photocatalyst property when the calcination temperature was 550℃. The degradation rate of RhB in 50 min was about 91.7% after 50 min irradiation under visible light with the dosage of photocatalyst at 0.04 g. Appropriate calcination temperature would be beneficial to enhance light absorption capacity and promote the separation of photogenerated electrons (e^-) and holes (h⁺).
- calcination temperature,
- thermal polymerization process,
- graphite phase carbon nitride,
- photocatalytic,
- Rhodamine

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References(24)

References

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