大理大学学报 ›› 2021, Vol. 6 ›› Issue (12): 40-45.

• 化学 • 上一篇    下一篇

Bi3+AgInS2的可见光催化活性的影响

  

  1. 大理大学药学院,云南大理 671000
  • 收稿日期:2021-04-12 出版日期:2021-12-15 发布日期:2022-01-14
  • 通讯作者: 严亚,教授,博士,E-mail: yan-ya@126.com。
  • 作者简介:王金雪,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)

Effect of Bi3+ on the Visible Light Photocatalyic Activity of AgInS2

  1. College of Pharmacy, Dali University, Dali, Yunnan 671000, China
  • Received:2021-04-12 Online:2021-12-15 Published:2022-01-14

摘要: 低温液相法制备AgInS2和掺杂不同量Bi3+的AgInS2(表示为Bi-AgInS2)。通过降解罗丹明B(RhB)和4-硝基苯酚(PNP)考察AgInS2和Bi-AgInS2的可见光催化活性。研究结果表明:未加入Bi3+时样品为正交结构的AgInS2,加入Bi3+后样品变为面心立方结构;Bi3+未改变AgInS2中各元素的氧化态,但使Ag+对电子的结合能力增强,S2-对电子的结合能力减弱;随Bi3+的增多,样品对可见光的吸收能力增强,发射强度减弱;Bi3+∶In3+=14.3∶2.7的Bi-AgInS2对RhB和PNP的降解显示出最佳的可见光催化活性。

关键词: AgInS2, Bi3+, 罗丹明B, 4-硝基苯酚, 可见光催化

Abstract: AgInS2 and AgInS2 with different ratios of Bi3+(denoted as Bi-AgInS2) were prepared by the low temperature liquid method. The visible light photocatalytic activities of AgInS2 and Bi-AgInS2 were studied through the degradation of Rhodamine B(RhB) and 4-nitrophenol(PNP). The experimental results displayed that the prepared samples without adding Bi3+ were orthorhombic phase AgInS2, while samples were face-centered cubic structure when different amount of Bi3+ were added into AgInS2. The addition of Bi3+ did not change the elements oxidation state in the AgInS2, but enhanced the binding ability of Ag+ to electrons, and weakened the binding ability of S2- to electrons. As the amount of Bi3+ increased, the visible light absorption abilities of the samples increased, but the emission intensities decreased. Bi-AgInS2 with the optimal ratio(Bi3+ ∶In3+=14.3∶2.7) showed the highest visible light photocatalytic activity for the degradations of RhB and PNP. 

Key words:

"> AgInS2, Bi3+, Rhodamine B, 4-nitrophenol, visible light photocatalysis

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