二次煅烧g-C_(3)N_(4)超声催化降解亚甲基蓝  

Ultrasonic Catalytic Degradation of Methylene Blue by Calcined g-C_(3)N_(4)

作　　者：于清波[1] 任欣欣 潘佳 杨宽 李慧琴 曾颖 YU Qingbo;REN Xinxin;PAN Jia;YANG Kuan;LI Huiqin;ZENG Y ing(School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《青岛科技大学学报（自然科学版）》2021年第4期14-18,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(21401001)。

摘　　要：通过对g-C_(3)N_(4)进行二次煅烧,制备了二次煅烧g-C_(3)N_(4),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-C_(3)N_(4)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-C_(3)N_(4)相比较,二次煅烧g-C_(3)N_(4)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-C_(3)N_(4)的声催化降解性能要优于原始g-C_(3)N_(4),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-C_(3)N_(4)还具有优良的循环稳定性。In this paper,the second calcined g-C_(3)N_(4) was prepared by the second calcination of g-C_(3)N_(4).The second calcined g-C_(3)N_(4) was added into methylene blue aqueous solution for ultrasonic catalysis,and its sonocatalytic degradation performance was studied.The second calcined g-C_(3)N_(4) 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-C_(3)N_(4),the lamellar structure of the calcined g-C_(3)N_(4) becomes thinner and the light response increases in the higher wavelength range.Based on this,the second calcined g-C_(3)N_(4) has better performance than the original g-C_(3)N_(4).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-C_(3)N_(4) also has excellent cycle stability.

关 键 词：二次煅烧 g-C_(3)N_(4) 超声催化 

分 类 号：O656.4[理学—分析化学]