大理大学学报 ›› 2021, Vol. 6 ›› Issue (6): 34-39.

• 化学 • 上一篇    下一篇

Fe3+掺杂的AgInS2的制备及其可见光催化活性研究

  

  1. 大理大学药学院,云南大理671000
  • 收稿日期:2021-03-26 出版日期:2021-06-15 发布日期:2021-06-29
  • 通讯作者: 严亚,教授,博士,E-mail:yan-ya@126.com。
  • 作者简介:把得艳,硕士研究生,主要从事药学研究。
  • 基金资助:
    国家自然科学基金项目(21563003)

Study on Preparation and Visible Light Photocatalytic Activity of Fe3+ Doped AgInS2

  1. College of Pharmacy, Dali University, Dali, Yunnan 671000, China
  • Received:2021-03-26 Online:2021-06-15 Published:2021-06-29

摘要: 目的:探讨Fe3+的掺杂对AgInS2的结构、形貌和可见光催化活性的影响。方法:采用原位液相法制备不同Fe3+掺杂量的
AgInS2(表示为Fe-AgInS2),通过降解罗丹明B(RhB)和对硝基苯酚(PNP),考察Fe3+的掺杂对AgInS2可见光催化活性的影响。
结果:Fe3+:In3+=2.8:14.2时,Fe-AgInS2对RhB的降解具有最高的可见光催化活性;4个样品中,Fe3+:In3+=12:5的Fe-AgInS2对
PNP的降解具有最高的可见光催化活性。结论:Fe3+的掺杂未改变AgInS2的结构和形貌,但可调节其颗粒大小和结晶度,增强
AgInS2在450~600 nm范围的吸收,抑制光生电子(e-)和光生空穴(h+)的复合,从而提高AgInS2的可见光催化活性。

关键词: AgInS2, Fe-AgInS2, 罗丹明B, 对硝基苯酚, 可见光催化

Abstract: Objective: To study the effects of Fe3+ doping on the structure, morphology and visible light photocatalytic activity of AgInS2. Methods: AgInS2 doped with different amount of Fe3+(denoted as Fe-AgInS2)were prepared by in-situ liquid phase method. Rhodamine B(RhB)and p-nitrophenol(PNP)were used as the degradation substrates for studying the visible light photocatalytic activity of Fe-AgInS2. Results: When Fe3+ : In3+ = 2.8 : 14.2, Fe-AgInS2 has the highest visible light catalytic activity for the degradation of RhB; among the four samples, Fe-AgInS2 with Fe3+ : In3+=12 : 5 has the highest visible light catalytic activity for the degradation of PNP. Conclusion: The doping of Fe3+ into AgInS2 did not change the structure and morphology of AgInS2, but it could adjust the particle size and crystallinity, enhance the absorption of AgInS2 in the range of 450-600 nm, and inhibit the recombination of photogenerated electrons(e-)and photogenerated holes(h+), thus improving the visible light photocatalytic activity of AgInS2.

Key words: AgInS2, Fe-AgInS2, Rhodamine B, p-nitrophenol, visible light photocatalysis