Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (8): 36-44.doi: 10.19964/j.issn.1006-4990.2023-0022

• Application of novel inorganic materials in photocatalysis and electrocatalysis • Previous Articles     Next Articles

Preparation of BiOI/g-C3N4 catalyst and its photocatalytic degradation performance of Rhodamine B

SUN Haijie1(), CHENG Yuan1, TIAN Yuan1, LIU Hongyan1, CHEN Zhihao2()   

  1. 1.College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, China
    2.Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, China
  • Received:2023-01-09 Online:2023-08-10 Published:2023-08-25
  • Contact: CHEN Zhihao E-mail:sunhaijie406@163.com;chenzh@ztri.com.cn

Abstract:

Using melamine as the raw material and graphite phase carbon nitride(g-C3N4) prepared by hydrothermal and calcination methods as the carrier,a carbon nitride composite bismuth oxide iodide(BiOI) nanoscale composite catalyst was constructed by precipitation method.The effects of BiOI loading,type and amount of surfactant on the adsorption and photocatalytic degradation of Rhodamine B on the composite catalyst were investigated,and the catalyst was characterized.It was found that when the mass fraction of BiOI was 66% and the non-ionic polymer surfactant polyvinylpyrrolidone(PVP) of 18.75 g/mL was used,the prepared catalyst had appropriate band gap,moderate particle size,and mainly contained BiOI(102) crystal surface.The adsorption and degradation effect of this catalyst was the best,and the degradation rate of RhB could reach 98.4%.More importantly,87.1% of RhB degradation was obtained after 5 reuses of the composite.Furthermore,degradation of 15 mg/L RhB over BiOI/g-C3N4 was a first order reaction,of which the rate coefficient was 0.161 8 min-1.

Key words: BiOI, C3N4, Rhodamine B, photocatalysis

CLC Number: