介孔NH_2-Ce-Pr-O合成及其可见光催化性能  

Synthesis and Visible Light Catalytic Performance of Mesoporous NH_2-Ce-Pr-O

作　　者：郝仕油[1] 王辉 钟云超 余慧敏 陈寒松[1] Hao Shiyou;Wang Hui;Zhong Yunchao;Yu Huimin;Chen Hansong(Xingzhi College 2.College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]浙江师范大学行知学院 [2]浙江师范大学生化学院,浙江金华321004

出　　处：《中国稀土学报》2018年第5期541-549,共9页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(21876158);浙江省自然科学基金项目(LY14B07006;Y4110289);浙江省新苗计划项目(2017R404071)资助

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(NO_3)_3,Pr(NO_3)_3为原料,采用水热反应制备前驱物,经萃取除去P123后既得表面羟基含量较高的Ce-Pr-O介孔材料。利用氨基硅烷与表面羟基间的缩合作用,合成了氨基功能化介孔Ce-Pr-O。利用XRD,N_2吸脱附,Raman,FT-IR,XPS等技术对合成样品结构性能进行了表征。结果表明:以25%Pr(NO_3)_3掺杂所获得的Ce-Pr-O结构性能较好;该样品氨基功能化后,除孔径、表面积及孔容变小外,其他性能基本保持不变。以酸性红14(AR14)为探针分子,对合成材料的光催化性能进行评价。结果表明:由于Pr掺杂后形成氧缺位,提高了样品的可见光吸收强度;此外,通过嫁接氨基,提高AR14的吸附量。因此,所合成的氨基功能化介孔Ce-Pr-O在可见光作用下,能较彻底地催化降解溶液中的AR14。Using P123 as template and Ce（NO3） 3 and Pr（NO3） 3 as raw materials, mesoporous Ce-Pr-O materials with high loading of surface hydroxyl group were synthesized via hydrothermal reaction to synthesize precursor and extraction to remove P123. Amino-functionalized mesoporous Ce-Pr-O was synthesized by the condensation of amino silane and surface hydroxyl groups. The synthesized materials were characterized by XRD, N2 adsorption-desorp- tion, Raman, FT-IR, and XPS technologies. The results showed that the structural property of mesoporous Ce-Pr-O doped with 25% Pr（N03）3 is better than that of other samples and that the structural properties remain constant except lower pore size, specific surface area and pore volume after animo-functionalization. The photocatalytic per- formance of the prepared materials was evaluated by the degradation of acid red （AR14） from aqueous solution. The photocatalytic results showed that AR14 can be thoroughly degraded by the amino-functionalized mesoporous Ce-Pr-O under the irradiation of visible light due to the strong adsorption of visible light and the higher adsorption of AR14 resulting from formation of oxygen vacancies and introduction of amino groups

关 键 词：氨基功能化 介孔Ce-Pr-O 合成 光催化 酸性红14 

分 类 号：O614.13[理学—无机化学] TF123.7[理学—化学]