全文下载： 
202104002.pdf
文章编号： 1672-6987（2021）04-0014-05； DOI： 10.16351/j.1672-6987.2021.04.002
于清波， 任欣欣， 潘佳， 杨宽， 李慧琴， 曾颖(安徽理工大学 材料科学与工程学院，安徽 淮南 232001)
摘要： 通过对g-C3N4进行二次煅烧，制备了二次煅烧g-C3N4，并将其加入亚甲基蓝水溶液中进行超声催化，研究它的声催化降解性能。在利用X射线衍射、红外光谱、扫描电镜等对二次煅烧g-C3N4进行表征基础上，研究催化剂种类、催化剂用量对声催化性能的影响。实验结果表明：与原始g-C3N4相比较，二次煅烧g-C3N4的片层状结构变薄，在较高波长范围内光响应增加，基于此，二次煅烧g-C3N4的声催化降解性能要优于原始g-C3N4，其中，当二次煅烧温度在625 ℃时，样品的声催化降解性能最好，并且在同一时间内，随着它质量的增加，声催化降解效率也会增加，此外，二次煅烧g-C3N4还具有优良的循环稳定性。
关键词： 二次煅烧； g-C3N4； 超声催化
中图分类号： O 656.4文献标志码： A
引用格式： 于清波， 任欣欣， 潘佳， 等. 二次煅烧g-C3N4超声催化降解亚甲基蓝［J］. 青岛科技大学学报(自然科学版), 2021, 42(4): 14-18.
YU Qingbo, REN Xinxin, PAN Jia, et al. Ultrasonic catalytic degradation of methylene blue by calcined g-C3N4［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2021， 42（4）： 14-18.
Ultrasonic Catalytic Degradation of Methylene Blue by Calcined g-C3N4
YU Qingbo, REN Xinxin, PAN Jia, YANG Kuan, LI Huiqin, ZENG Ying
(School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China)
Abstract: In this paper, the second calcined g-C3N4 was prepared by the second calcination of g-C3N4. The second calcined g-C3N4 was added into methylene blue aqueous solution for ultrasonic catalysis, and its sonocatalytic degradation performance was studied. The second calcined g-C3N4 was characterized by XRD, FT-IR and SEM. In addition, the effects of catalyst type and catalyst amount on the sonocatalytic performance were also considered. The experimental results show that compared with the original g-C3N4, the lamellar structure of the calcined g-C3N4 becomes thinner and the light response increases in the higher wavelength range. Based on this, the second calcined g-C3N4 has better performance than the original g-C3N4. When the second calcination temperature is 625 ℃, the sample has the best degradation performance, and in the same time, with the increase of its mass, the efficiency of sonocatalytic degradation will increase. In addition, the second calcination of g-C3N4 also has excellent cycle stability.
Key words: second calcined; g-C3N4; ultrasonic catalys
收稿日期： 2020-11-30
基金项目： 国家自然科学基金项目（21401001）.
作者简介： 于清波（1978—），女，教授.
