| 王欢,刘利,胡金山,崔文权,梁英华.基于等离子体型Ag@AgBr插层K4Nb6O17的可控合成及光催化性能[J].分子催化,2014,(5):450-459 |
| 基于等离子体型Ag@AgBr插层K4Nb6O17的可控合成及光催化性能 |
| Controllable Fabrication of Plasmonic Ag@AgBr intercalated K4Nb6O17 and there photocatalytic performance |
| 投稿时间：2014-07-22 修订日期：2014-08-11 |
| DOI： |
| 中文关键词: Ag@AgBr K4Nb6O17 插层 可控合成 光催化 |
| 英文关键词:Ag@AgBr K4Nb6O17 intercalated Controllable Fabrication photocatalysis |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 在微波辅助条件下采用离子交换和光致还原的方法将Ag@AgBr纳米粒子插层进入K4Nb6O17层间，制备了具有等离子体共振效应的可见光催化剂（记作K4Nb6O17/Ag@AgBr）．在胺交换过程中采用不同链长的有机胺对酸交换产物进行柱撑，通过铌酸钾层间距的变化实现层间Ag@AgBr纳米粒子的形貌调控．利用XRD，SEM，EDX，UV-Vis等手段对复合催化剂进行结构、形貌和性质分析，并对复合光催化剂进行了可见光降解亚甲基蓝、甲基橙和苯酚的性能研究．结果表明：改性后的复合光催化剂在可见光区的响应大大增强；三种复合光催化剂对目标污染物均具有良好的可见光催化活性，其中十二胺柱撑的Ag@AgBr插层K4Nb6O17复合光催化剂对亚甲基蓝的移除效果最好． |
| 英文摘要: |
| The Ag@AgBr intercalated K4Nb6O17 plasmonic photocatalysts (donated as K4Nb6O17/Ag@AgBr) were synthesized via a microwave-assisted ion-exchange method and photoreduction method. Different organic amines were used in the process of amine pillared H4Nb6O17, the particle size of the Ag@AgBr located in the layered K4Nb6O17 can be tuned. The composites were characterized by using XRD, SEM, EDX, TEM, UV-Vis, and PL methods. The photocatalytic activities of the samples were evaluated by the degradation of methylene blue, methyl orange and phenol. The results show that the as-prepared photocatalysts showed enhanced absorption response and good photocatalytic activities for the degradation of the targeted pollutants in visible light region. The dodecylamine pillared K4Nb6O17/Ag@AgBr composite photocatalyst showed the highest photocatalytic activity for the degradation of methylene blue. |
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