| 李炳杰,吴志坚,陈澍,上官文峰,袁坚.Ni/Zn/Cr系复合金属氧化物的制备及其光催化还原二氧化碳性能研究[J].分子催化,2014,(3):268-274 |
| Ni/Zn/Cr系复合金属氧化物的制备及其光催化还原二氧化碳性能研究 |
| Preparation and Photo-hydrogenation of CO2 and H2O on Ni/Zn/Cr Metal Oxides Catalyst |
| 投稿时间：2014-01-09 修订日期：2014-01-25 |
| 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:国家自然科学基金项目，上海市国际合作项目 |
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| 中文摘要: |
| 以共沉淀法合成的Ni/Zn/Cr系层状金属氢氧化物（LDHs）经不同温度焙烧获得相应的复合金属氧化物，利用XRD、TG、XPS、TEM、BET和UV-Vis等表征手段对所制备样品的结构、组成、形貌以及吸光特性等进行了分析，并考察了样品在常温常压下光催化还原CO2(g) H2O(g)的性能。结果表明，以Ni/Zn/Cr-LDHs为前驱体经500oC焙烧后可得到晶粒尺寸小、分散均匀度高的多相复合金属氧化物，主晶相为纳米尺度的NiO、Cr2O3、ZnCr2O4和NiCr2O4，在这些金属氧化物的协同作用下，样品表现出较好的光催化还原二氧化碳活性，主产物为CH4和CO。 |
| 英文摘要: |
| A series of metal oxides complex were obtained by annealing co-precipitation-method-synthesized Ni/Zn/Cr layered double hydroxides (LDHs) at different temperature. The structure, composition, morphology and absorption properties of the samples were characterized by XRD, TG, XPS, TEM, BET and UV-Vis. Their activities in photocatalytic reduction of CO2 with H2O vapor were tested at room temperature and atmospheric pressure. The results revealed that the sample calcined at 500oC possessed the highest catalytic activity with CH4 and CO as the major products, which was attributed to the interaction of uniformly dispersed NiO, Cr2O3, ZnCr2O4 and NiCr2O4 with small grain size. |
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