The Surface Chemistry of Hybrid Nanometer-Sized Particles

✍ Scribed by Chuan-yi Wang; Chun-yan Liu; Jin Chen; Tao Shen

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 848 KB
• Volume: 191
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4976

✦ Synopsis

prepared by a photocatalytic method. Although many M/ Nanometer sized Au/TiO 2 particles were synthesized by irradiation TiO 2 systems, such as V/TiO 2 (1), Pt/TiO 2 (14), Ni/TiO 2 of a HAuCl 4 solution containing colloidal TiO 2 with light of wave-(15), and Rh/TiO 2 (16), have been well studied, to the length (l) ú330 nm. The absorption maximum attributed to the best of our knowledge, the catalyst system of Au/TiO 2 in surface plasmon band of gold was observed at 530 nm, a red shift nanometer-sized scale was less studied, particularly for the of about 10 nm from the position in aqueous solution. The particle microstructure and the properties of the supported metal. In size of Au/TiO 2 determined by TEM was about 25 nm. The Au the present work, the nucleation and aggregation process clusters are situated on the surface of TiO 2 in terms of microcrystalof Au clusters on the surface of TiO 2 was further studied.

lite, which was confirmed by HRTEM, EDS, and XRD. A negative

Moreover, the microstructure of the supported Au clusters shift of binding energy in the Au 4f 7/2 for gold cluster on the surface of TiO 2 was found, and the electronic interaction between the metal and the electronic interaction between the metal and the and the support was discussed. ᭧ 1997 Academic Press support were analyzed.