Hits:

Indexed by:期刊论文

Date of Publication:2009-01-15

Journal:4th Asian Conference on Crystal Growth and Crystal Technology

Included Journals:SCIE、EI、CPCI-S、Scopus

Volume:311

Issue:3

Page Number:746-748

ISSN No.:0022-0248

Key Words:Sol-gel method; Nitric monoxide elimination; SrTiO(3); Photocatalysis

Abstract:On the basis of our previous work, we developed a new type of catalyst (e.g. photocatalysts) to degradate nitrogen oxides (NO(x)) Recently, a series of photocatalysts Such as strontium titanate (SrTiO(3)) were prepared by sol-gel method, their photocatalytic activities of NO degradation were also studied. The obtained samples were characterized by differential thermal analysis and thermal gravimetric analysis, X-ray diffraction and transmission electron microscopy. The as-prepared photocatalysts have a perfect perovskite structure, and pure samples can be obtained when the corresponding sol-gel precursors were calcined at 600 degrees C in muffle. With the temperature increasing, the grain size of SrTiO(3) samples grew large steadily and the crystallinity became better. The optimal synthesis of SrTiO(3) was determined to be 700 degrees C calcination. Our current experiments indicated that some parameters such as lamp-house, calcinations temperature had a strong effect on the designed photoreaction, the concentration of nitric oxide at 716 mg/m(3), the degradation rate of nitric oxide can increase above 92%. (C) 2008 Elsevier B.V. All rights reserved.