Double-Layer 3D Macro-Mesoporous Metal Oxide Modified Boron-Doped Diamond with Enhanced Photoelectrochemical Performance
Double-Layer 3D Macro-Mesoporous Metal Oxide Modified Boron-Doped Diamond with Enhanced Photoelectrochemical Performance
复制标题
具有增强光电化学性能的双层3D大介孔金属氧化物改性掺硼金刚石
DOI：
10.1021/acsami.6b01929
复制
发表时间：
2016-10-26
影响因子：
9.5
通讯作者：
Zhao, Guohua
中科院分区：
文献类型：
--
作者：
Fan, Jiaqi;Shi, Huijie;Zhao, Guohua
本工作采用聚苯乙烯球（PS）垂直沉积方法，在双层三维宏观介孔（DL3DOM-m）结构的硼掺杂金刚石（BDD）基底上制备了TiO2/Sb掺杂SnO2电极。所制备的DL3DOM-m TiO2/SnO2/BDD用于去除有机污染物，表现出优异的光电催化性能。 SEM、XRD和XPS表明DL3DOM-m电极具有3D大孔层状框架，孔径均匀（约400 nm）、纳米颗粒（4.5-5.8 nm）和高电活性表面积（是BDD的3倍）。 SA-XRD表明DL3DOM-m电极的骨架具有介孔结构。结果发现所制备的电极表现出显着的电催化活性、高光电流和出色的吸收能力(91.0 μ g cm(-2))。此外，以DL3DOM-m电极为光阳极反应3小时后双酚A（BPA）完全分解，而BDD上的分解率仅为58.9%。这表明该修饰电极具有较高的光电化学性能，在实际水处理中具有巨大的应用潜力。
In this work, a TiO2/Sb-doped SnO2 electrode was prepared on the boron-doped diamond (BDD) substrate with double-layer three-dimensional macro-mesoporous (DL3DOM-m) structure, using the polystyrene sphere (PS) vertical deposition method. The as-prepared DL3DOM-m TiO2/SnO2/BDD was employed for organic contaminant removal, showing excellent photoelectrocatalytic performance. SEM, XRD and XPS indicated that DL3DOM-m electrode possessed a 3D macroporous layered framework with uniform pore size (about 400 nm), nanosized particles (4.5-5.8 nm), and high electroactive surface area (3-fold more than that of BDD). SA-XRD indicated the backbone of DL3DOM-m electrode had mesoporous structure. It was found that the as-prepared electrode exhibited remarkable electrocatalytic activity, high photocurrent and outstanding absorption capability (91.0 mu g cm(-2)). Furthermore, bisphenol A (BPA) was completely decomposed after 3 h of reaction applying DL3DOM-m electrode as photoanode, and that on BDD was only 58.9%. It indicated that the modified electrode had great potential to be used in practical water treatment with high photoelectrochemical performance.