LaCoO_(3)钙钛矿型催化剂的制备及其光催化降解盐酸四环素的研究  

Preparation of LaCoO_(3) perovskite catalyst and its application in photocatalytic degradation of tetracycline hydrochloride

作　　者：牛紫嫣 郭世龙 乔枫瑞 王晋 杨彩凤 王彦谦 刘振民[1] 高闯基 王潇潇[1] NIU Zi-yan;GUO Shi-long;QIAO Feng-rui;WANG Jin;YANG Cai-feng;WANG Yan-qian;LIU Zhen-min;GAO Chuang-ji;WANG Xiao-xiao(Shanxi Provincial Key Laboratory for High Value Utilization of Coal Gangue,College of Chemical Engineering and Technology,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学化学工程与技术学院,煤矸石高值利用山西省重点实验室,山西太原030024

出　　处：《现代化工》2023年第3期163-170,共8页Modern Chemical Industry

基　　金：山西省基础研究计划(青年科学研究项目)(202103021223294,201901D211584);山西省基础研究计划(面上项目)(202203021211203);山西省重点研发计划项目(201903D121025);山西省重点研发计划(能源与节能环保领域)项目(202102090301026);山西省研究生优秀创新项目(2022Y707);山西省高等学校大学生创新创业训练计划项目(S20221010937,20210492,20210493);太原科技大学大学生创新创业训练计划项目(XJ2020045,XJ2021047,XJ2021051,XJ2022049)。

摘　　要：以硝酸钴、硝酸镧及柠檬酸为原料,采用水热合成法制备4种不同物质的量的比的钙钛矿型催化剂LaCoO_(3)。利用XRD、SEM、TEM、FT-IR、XPS、H_(2)-TPR等表征手段对合成的钙钛矿型催化剂LaCoO_(3)进行物化性质表征,并以盐酸四环素(TCHC)为目标降解物,在可见光照射下进行光催化降解反应,并分析光催化降解机理。结果表明,4种催化剂对TCHC的降解率均达到80%以上,在20℃下可见光照射1 h后,n[La(NO_(3))_(3)]∶n[Co(NO_(3))_(2)]∶n(柠檬酸)=1∶1∶6的LaCoO_(3)催化剂对TCHC的降解效果最好,降解率达到89.29%。LaCoO_(3)perovskite catalysts with four different molar ratios are prepared through hydrothermal method by using cobalt nitrate, lanthanum nitrate and citric acid as raw materials.XRD,SEM,TEM,FTIR,XPS and H_(2)-TPR are employed to characterize the physicochemical properties of the catalysts.Taking tetracycline hydrochloride(TCHC) as the target product, the photocatalytic degradation reaction over the catalyst is carried out in the presence of visible light, and the photocatalytic degradation mechanism is also explored.Experimental results show that the degradation rates of TCHC over four kinds of catalysts all exceed 80%.LaCoO_(3)catalyst with a LaNO_(3)∶CoNO_(3)∶citric acid ratio of 1∶1∶6 has the best degradation effect on TCHC after visible light irradiation at 20℃ for 1 hour, delivering a degradation rate of 89.29%.

关 键 词：钙钛矿催化剂 钴酸镧 光催化 盐酸四环素 

分 类 号：O644[理学—物理化学]