Photocatalytic degradation of 2-propanol over metal-ion-loaded titanium(IV) oxide under visible light irradiation: Effect of physical properties of nano-crystalline titanium(IV) oxide
Photocatalytic degradation of 2-propanol over metal-ion-loaded titanium(IV) oxide under visible light irradiation: Effect of physical properties of nano-crystalline titanium(IV) oxide
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DOI：
10.1016/j.apcatb.2010.09.021
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发表时间：
2011-01-14
影响因子：
22.1
通讯作者：
Kominami, Hiroshi
中科院分区：
文献类型：
--
作者：
Kitano, Sho;Hashimoto, Keiji;Kominami, Hiroshi
采用吸附法，将少量铑离子（Rh3+）或铜离子（Cu2+）负载在HyCOM（有机介质水热结晶）法制备的具有各种物理性质的氧化钛（IV）纳米晶（TiO2）上，并随后在不同温度下进行煅烧。在可见光照射下光催化降解2-丙醇中，Rh3+修饰的HyCOM-TiO2样品表现出比Cu2+修饰的HyCOM-TiO2样品和氮掺杂TiO2样品更高的活性。 Rh3+ 修饰的 HyCOM-TiO2 样品随着煅烧温度的变化表现出类似火山的趋势，这表明 TiO2 的表面积和结晶度的平衡在 Rh3+/TiO2 光催化剂中很重要。 Cu-2 改性的金红石型 TiO2 在 Cu2+/HyCOM-TiO2 样品中表现出最高水平的活性。 (c) 2010 Elsevier B.V. 保留所有权利。
Using the adsorption method, small amounts of rhodium ion (Rh3+) or copper ion (Cu2+) were loaded on nanocrystalline titanium(IV) oxide (TiO2) with various physical properties prepared by the HyCOM (hydrothermal crystallization in organic media) method and subsequent calcination at various temperatures. In photocatalytic degradation of 2-propanol under visible light irradiation, Rh3+-modified HyCOM-TiO2 samples exhibited higher levels of activity than did Cu2+-modified HyCOM-TiO2 samples and the nitrogen-doped TiO2 sample. The Rh3+-modified HyCOM-TiO2 samples showed a volcano-like tendency with calcination temperature, suggesting that the balance of surface area and crystallinity of TiO2 is important in an Rh3+/TiO2 photocatalyst. Rutile-type TiO2 modified with Cu-2 exhibited the highest level of activity among the Cu2+/HyCOM-TiO2 samples. (c) 2010 Elsevier B.V. All rights reserved.