Inorganic Chemicals Industry ›› 2024, Vol. 56 ›› Issue (10): 159-168.doi: 10.19964/j.issn.1006-4990.2024-0011

• Catalytic Materials • Previous Articles    

Study on photoelectric performance analysis of g-C3N5 nanorods and removal of Cr(Ⅵ) and methylene blue

CUI Xiangdong1(), LIU Sile2   

  1. 1.Anyang Preschool Education College,Anyang 455000,China
    2.Department of Chemistry and Chemical Engineering,Shenyang Institute of Science and Technology,Shenyang 110167,China
  • Received:2024-01-07 Online:2024-10-10 Published:2024-11-05

Abstract:

In order to achieve green and efficient degradation of Cr(Ⅵ) and dye wastewater,one⁃dimensional nitrogen⁃rich graphite phase carbon nitride nanorods(1D g-C3N5) with excellent photocatalytic activity were prepared by KBr-induced method.The crystal structure,group,morphology,photochemical properties and electrochemical properties of 1D g-C3N5 were characterized by XRD,FT-IR,TEM,UV-vis DRS,PL,TPC and EIS.The photocatalytic removal of Cr(Ⅵ) and degradation of methylene blue(MB) under visible light were evaluated.The results showed that the specific surface area of the material was increased by the KBr-induced morphology control method,the spectral absorption range was broadened,the visible light absorption and conversion ability was improved,and the separation of photogenerated carriers was effectively promoted,showing a lower surface/interface resistance value.The photocatalytic activity of 1D g-C3N5 was significantly improved compared with bulk g-C3N5.After visible light irradiation for 60 min,the removal rate of Cr(Ⅵ) and the degradation rate of MB by 1D g-C3N5 reached 97.6% and 98.8%,respectively.Moreover,1D g-C3N5 still had good stability after 5 cycles.The results of the active groups showed that the main active groups of the photocatalytic system were ·O2- and h+,the removal of Cr(Ⅵ) benefited from the effect of e-.The photocatalytic mechanism of 1D g-C3N5 photocatalytic reduction of Cr(Ⅵ) and removal of MB was proposed by band structure calculation.

Key words: KBr induction, 1D g-C3N5, photocatalysis, Cr(Ⅵ), methylene blue

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