| Co修饰CeO2复合材料的晶面调控及其光热催化脱硝性能 |
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| 引用本文： | 马恬,朱晨,刘成宝,余辰辰,张文雅,钱君超,陈志刚.Co修饰CeO2复合材料的晶面调控及其光热催化脱硝性能[J].复合材料学报,2020,37(9):2265-2271. |
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| 作者姓名： | 马恬 朱晨 刘成宝 余辰辰 张文雅 钱君超 陈志刚 |
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| 作者单位： | 苏州科技大学 化学生物与材料工程学院 江苏省环境功能材料重点实验室，苏州 215009 |
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| 基金项目： | 江苏省自然科学基金(BK20180103; BK20180971)；江苏省高校自然科学基金(16KJA430008)；江苏省高校优势学科建设工程资助项目；江苏高校水处理技术与材料协同创新中心；苏州市科技发展计划项目(重点产业技术创新—前瞻性应用研究)(SYG201742; SYG201818)；苏州市微纳光电材料与传感器重点实验室(SZS201812) |
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| 摘 要： | 采用一步水热法，通过调节Co与Ce的摩尔比，制备出暴露高活性晶面的Co修饰CeO2复合材料。利用比表面和孔径分析仪、TG-DSC、TEM、SEM、XRD、紫外-可见分光光度计(UV-vis)、XPS、光热催化脱硝技术对Co修饰CeO2复合材料进行全面表征。结果表明，随着Co元素含量的增加，Co修饰CeO2复合材料的比表面积增大，CeO2呈纳米棒状结构，Co与表面氧生成Co3O4，二者的共结晶过程降低了复合材料的结晶表面能，使CeO2主要暴露(200)和(220)高活性晶面，且暴露比例增大。光热催化脱硝结果表明，当Co与Ce摩尔比为15%、煅烧温度为400℃时，Co修饰CeO2复合材料的光热催化效率达到最高，为98%。
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| 关 键 词： | Co CeO2 催化材料 晶面调控 光催化脱硝 |
| 收稿时间： | 2019-10-16 |
Facet control of Co-modified CeO2 composite and its thermal-photocatalytic denitration property |
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| Affiliation: | Jiangsu Key Laboratory for Environment Functional Materials, School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | The Co-modified CeO2 composites with high active crystal planes were synthesized by simple one step hydrothermal method. The structure of Co-modified CeO2 composites was characterized by specific surface area and porosity analyzer, TG-DSC, TEM, SEM, XRD, ultraviolet-visible spectrophotometer (UV-vis), XPS and photothermal catalytic denitration. The results show that as the amount of Co increases, the specific surface area of the Co-modified CeO2 composites increases. The exposed high active surface is (200) and (220) crystal face, while the Co-modified CeO2 composites mainly show rod-like structure; when the concentration of Co content precursor increases, CeO2 has a nanorod structure, and the Co produces in the form of Co3O4 by chemical band connection with surface oxygen. The results of thermal-photocatalytic denitration test show that the catalytic efficiency of the Co-modified CeO2 composites reaches 98% with 15% molar ratio of Co to Ce at 400℃ calcination temperature. |
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