| 加热方式及原料配比对介孔CeO2结构及其光催化性能的影响 |
| Efffect of Heating Model and Raw Material Ratios on the Structure and Photocatalytic Properties of Mesoporous CeO2 |
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| 摘要: 以P123（聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物）为模板剂，Ce（NO3）3为反应原料，通过考察加热方式、加热温度、原料配比等因素，合成了结构性能较好、表面羟基含量较高的介孔CeO2材料。利用XRD，N2吸附-脱附，TEM，Raman，FT-IR等技术对合成样品的结构性能进行了表征，结果表明，当P123与Ce（NO3）3物质的量之比为1：10，在110℃水热下合成的CeO2结构性能最好。以酸性橙7（AO7）为探针分子，对合成介孔CeO2的光催化性能进行评价。光催化结果证明，由于表面羟基含量较高、介孔及氧缺位的形成，所合成结构性能较好的CeO2，利用可见光可彻底催化降解溶液中的AO7。 |
| 关键词: 合成因素 介孔CeO2 吸附 光催化 酸性橙7 |
| 基金项目: 浙江省自然科学基金（No.LY14B070006，Y4110289）资助项目。 |
| Abstract: Mesoporous CeO2 materials with good structural properties and high loading of surface hydroxyl groups were synthesized using P123 as template and Ce (NO3)3 as raw material via investigating the heating models, heating temperature and the ratios of raw material. The synthesized materials were characterized by XRD, N2 adsorption-desorption, TEM, Raman, and FT-IR technologies and the results showed that the structural properties of mesoporous CeO2 prepared using the molar ratio of P123 to Ce (NO3)3 of 1:10 as reactants at the temperature of 110℃ hydrothermal heating is the best. The photocatalytic performance of mesoporous CeO2 was evaluated by the degradation of acid orange 7 (AO7)from aqueous solution. The photocatalytic results presented that AO7 can be thoroughly degraded by the resulted mesoporous CeO2 under the irradiation of visible light due to the high loading of hydroxyl groups and the formation of mesopores and oxygen vacancies. |
| Keywords: synthetic factors mesoporous CeO2 adsorption photocatalysis acid orange 7 |
| 投稿时间：2016-07-24 修订日期：2016-12-12 |
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| 王辉,邓黄秀,郝仕油.加热方式及原料配比对介孔CeO2结构及其光催化性能的影响[J].无机化学学报,2017,33(2):285-291. |
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