期刊
CRYSTENGCOMM
卷 21, 期 31, 页码 4607-4619出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ce00530g
关键词
-
资金
- National Natural Science Foundation of China [51608226, 21776110, 21878119]
- Program for the Development of Science and Technology of Jilin Province [20180101202JC, 20190701021GH]
- Thirteenth Five-Year Program for Science and Technology of Education Department of Jilin Province [JJKH20191005KJ]
Zn-Al layered double hydroxides (Zn-Al LDHs) with various reaction times were synthesized by a hydrothermal method at constant pH, and they were tested for the removal of RhB with or without post-calcination treatment. The effect of reaction time and calcination treatment on the structures, morphologies, chemical compositions and photocatalytic properties of Zn-Al LDHs was analyzed by XRD, TG/DSC, SEM, XPS, FTIR, Raman, PL and UV-vis DRS in detail. The optimized Zn-Al LDHs with a book page morphology had good crystal quality and the sample morphology changed to irregular flakelets with increasing calcination temperature. The RhB photodegradation results showed that the photocatalytic activity of Zn-Al LDHs was enhanced with increasing reaction time due to the improved crystal quality and the better separation of photogenerated electron-hole pairs. It was found that the calcination temperature was also an important factor for the c-Zn-Al-LDH samples, and the c-Zn-Al-LDH-24-300 sample exhibited the best photocatalytic activity due to the highest efficiency of photogenerated electron-hole separation, especially the formation of a new phase. A pseudo first order rate and recycling experiments were also used to analyze the photocatalytic activity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据