| 贺学智,李炳杰,吴志坚,陈威,上官文峰,袁坚.层状双金属氢氧化物Zn(Cu)/Al-LDHs的制备及其光催化还原二氧化碳的研究[J].分子催化,2013,(1):70-75 |
| 层状双金属氢氧化物Zn(Cu)/Al-LDHs的制备及其光催化还原二氧化碳的研究 |
| The Preparation of Layered Double Hydroxides Zn(Cu)/Al-LDHs and the Photocatalytic Reduction of CO2 |
| 投稿时间：2012-12-25 修订日期：2013-01-04 |
| DOI： |
| 中文关键词: 二氧化碳、光催化、LDHs、甲烷 |
| 英文关键词:CO2, photocatalytic, LDHs, CH4 |
| 基金项目:The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan) |
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| 中文摘要: |
| 用共沉淀法制备了不同M2 /M3 的层状双金属氢氧化物Zn(Cu)/Al-LDHs，利用粉末X射线衍射（XRD）、扫描电子显微镜（SEM）、紫外可见漫反射（UV-Vis DRS）以及热重分析仪（TG-DSC）等测试方法表征了所制备样品的结构、形貌以及相关物性。在自行设计的催化反应系统中于室温和常压下测试了催化剂光催化还原CO2(g) H2O(g)的活性。结果表明所制备的Zn(Cu)/Al-LDHs样品均可光催化还原CO2(g) H2O(g)，实验中测得的催化反应产物主要是CO和CH4。LDHs结构中Cu2 对Zn2 的取代导致催化剂吸收边红移，并显著提高催化反应产率。 |
| 英文摘要: |
| Layered Double Hydroxides Zn(Cu)/Al-LDHs with different ratio of M2 /M3 （M2 =Zn，Cu；M3 =Al）were prepared by co-precipitation method. The structure, morphology and relevant properties were characterized by Powder X-R-ay Diffraction, SEM, UV-Vis DRS and TG-DSC. Then photocatalytic reaction of hydrogenation of CO2 with H2O vapor was conducted at room temperature and atmospheric pressure on self-designed reaction system. The results showed that all the catalysts were active for photoreduction of CO2 with H2O, and the main products were CO and CH4. The substitution of Zn2 with Cu2 can improve the productivity obviously. |
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