中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 双层钙钛矿结构氧化物Ca_2InNbO_6的制备及光催化性能研究 安徽农业大学学报 2020 (1) 118-121
Position: Home > Articles > Preparation and photocatalytic performance of double perovskite-type compound Ca_2InNbO_6 Journal of Anhui Agricultural University 2020 (1) 118-121

双层钙钛矿结构氧化物Ca_2InNbO_6的制备及光催化性能研究

作  者：
桂霞;张义;张伟;崔执应
单  位：
安徽水利水电职业技术学院资源与环境工程学院;中国科学技术大学国家同步辐射实验室
关键词：
光催化;钙钛矿;固相法;亚甲基蓝降解;VOCs降解
摘  要：
采用固相合成法制备可见光响应的双层钙钛矿结构光催化剂Ca_2InNbO_6。利用X-射线衍射(XRD),紫外-可见吸收谱(UV-visDRS)等方法对Ca_2InNbO_6的结构进行表征,利用自行研制的光催化降解反应装置对其在可见光下降解液相和气相有机污染物的性能进行评价。结果表明,制备的Ca_2InNbO_6不含其它氧化物杂相,可响应太阳光谱中波长小于440 nm的部分。在可见光下,Ca_2InNbO_6降解液相亚甲基蓝的效率在4 h内达82.7%;降解气相甲醛的效率在3 h内高达99.3%,符合Langmuir-Hinshelwood一级动力学过程。湿度对降解甲醛的效率有显著影响,当湿度为R.H. 60%时活性最优,动力学常数为0.026 min~(-1),是R.H. 20%时的3倍。
译  名：
Preparation and photocatalytic performance of double perovskite-type compound Ca_2InNbO_6
作  者：
GUI Xia;ZHANG Yi;ZHANG Wei;CUI Zhiying;Department of Resources and Environmental Engineering, Anhui Water Conservancy Technical College;National Synchrotron Radiation Laboratory, University of Science and Technology of China;
关键词：
phtocatalysis;;perovskite;;solid-state reaction;;methylene blue degradation;;VOCs degradation
摘  要：
The double perovskite-type compound Ca_2InNbO_6 was prepared by solid-state reaction method. The physical chemical properties were characterized by X-ray diffraction(XRD) and UV-vis DRS techniques. The degradation of aqueous methylene blue and gaseous formaldehyde on Ca_2InNbO_6 was also evaluated using self-built apparatus. The results showed that the preparation procedure did not introduce impurities into as-synthesized Ca_2InNbO_6 which can respond solar spectrum in the region from UV-light to 440 nm. Ca_2InNbO_6 shows photocatalytic activity of 82.7% in 4 h for degradation of aqueous methylene blue. The efficiency of degradation of gaseous formaldehyde reaches 99.3% in 3 h under visible light irradiation. The photocatalytic process is typical of Langmuir-Hinshelwood model of first-order reaction. In addition, the photocatalytic performance depends on the humidity levels. The optimal efficiency with kinetic constant of 0.026 min~(-1) was obtained when the relative humidity is R.H. 60%, which is 3 times of that in R.H. 20%.

相似文章

导出引用
计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46