›› 2018, Vol. 3 ›› Issue (6): 55-60.

• 化学 • 上一篇    下一篇

K+对AgInS2的可见光催化活性的影响

  

  1. (大理大学药学与化学学院,云南大理671000)
  • 收稿日期:2017-10-24 出版日期:2018-06-15 发布日期:2018-06-15
  • 作者简介:刘章友,硕士研究生,主要从事纳米药剂学研究.
  • 基金资助:

    国家自然科学基金资助项目(21563003)

Effect of K+ on the Visible Light Photocatalytic Activity of AgInS2

  1. (College of Pharmacy and Chemistry, Dali University, Dali, Yunnan 671000, China)
  • Received:2017-10-24 Online:2018-06-15 Published:2018-06-15

摘要:

目的:研究金属K+的引入对AgInS2的可见光催化活性的影响。方法:采用低温液相法制备不同K+:In3+比例的AgInS2催
化剂(K-AgInS2),通过X射线粉末衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UVVis
DRS)和荧光光谱(PL)对产物进行表征。以罗丹明B为污染物模型,1 000 W碘钨灯为光源(λ > 420 nm),考察K+的引入量
对AgInS2的可见光催化活性的影响。结果:适量的K+引入到AgInS2中能提高AgInS2的可见光催化活性,其中K+与In3+比例为
12:5时,K-AgInS2具有最高的可见光催化活性。结论:K+的引入对AglnS2的可见光催化活性呈现非线性影响,随着K+的引入量
的增加,AgInS2的可见光催化活性先增加后减小。

关键词: 低温液相法, AgInS2, K, 可见光催化

Abstract:

Objective: The paper is to explore the effect of K+ on the visible light photocatalytic activity of AgInS2. Methods:
K-AgInS2 with different molar ratios of K+ to In3+ was prepared by using the low temperature liquid phase method. XRD, XPS, SEM,
UV-Vis DRS, and PL were used to characterize the products. Rhodamine B(RhB)was selected as the model contaminant, 1 000 W
halogen lamp was used as the light source(λ>420 nm), the effects of different ratios of K+ on the photocatalytic activities of AgInS2
were explored. Results: Visible light photocatalytic activity of AgInS2 was enhanced when appropriate amount of K+ was introduced
into AgInS2. The optimum ratio of K+ to In3+ was 12:5, K-AgInS2 with the optimal ratio showed the highest visible light photocatalytic
activity. Conclusion: The effects of K+ on the visible light photocatalytic activity of AgInS2 were non-linear, and the visible light
photocatalytic activity of AgInS2 increased and then decreased with the introduction of K+.

Key words: low temperature liquid phase method, AgInS2, K, visible light photocatalysis

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