无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2023, Vol. 55 ›› Issue (8): 36-44.doi: 10.19964/j.issn.1006-4990.2023-0022

• 新型无机材料在光电催化中的应用 • 上一篇    下一篇

BiOI/g-C3N4催化剂的制备及其光催化降解罗丹明B性能

孙海杰1(), 程圆1, 田源1, 柳宏岩1, 陈志浩2()   

  1. 1.郑州师范学院化学化工学院,河南 郑州 450044
    2.中国烟草总公司郑州烟草研究院,河南 郑州 450001
  • 收稿日期:2023-01-09 出版日期:2023-08-10 发布日期:2023-08-25
  • 通讯作者: 陈志浩(1986— ),男,博士,高级工程师,研究方向为多相催化及化工工艺学;E-mail:chenzh@ztri.com.cn
  • 作者简介:孙海杰(1982— ),男,博士,副教授,研究方向为物理化学及催化化学;E-mail:sunhaijie406@163.com
  • 基金资助:
    国家自然科学基金项目(22278380);河南省高等学校骨干教师资助项目(2019GGJS252);河南省高等学校大学生创新创业训练计划项目(202212949008);郑州师范学院大学生科研创新基金项目(2021006)

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 Published:2023-08-10 Online:2023-08-25

摘要:

以三聚氰胺为原始材料,以水热和煅烧法制备的石墨相氮化碳(g-C3N4)为载体,采用沉淀法构建了氮化碳复合碘氧化铋(BiOI)纳米级复合催化剂。考察了BiOI负载量、表面活性物质的种类和用量对复合催化剂吸附和光催化降解罗丹明B的影响,并对催化剂进行了表征。结果表明,当BiOI质量分数为66%、使用18.75 g/mL的非离子型高分子表面活性剂聚乙烯吡咯烷酮(PVP)时,所制得的催化剂带隙适宜,粒径适中,且主要含有BiOI(102)晶面,吸附和降解效果最佳,对RhB的降解率可达到98.4%。该复合材料在重复使用5次后降解率仍然可以达到87.1%。此外,BiOI/g-C3N4催化降解15 mg/L的RhB溶液的反应符合一级动力学方程,其速率常数为0.161 8 min-1

关键词: 碘氧化铋, 氮化碳, 罗丹明B, 光催化

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

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