Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (2): 385-390.DOI: 10.3724/SP.J.1088.2012.20904

• Research papers • Previous Articles     Next Articles

Preparation, Characterization, and Photocatalytic Properties of Pt/BiOCl Nanoplates

YU Changlin1,*, CHEN Jianchai1,2, CAO Fangfang1, LI Xin1, FAN Qizhe1, YU Jimmy C3, WEI Longfu1   

  1. 1School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China; 2Fujian Provincial Key Laboratory of Photocatalysis-State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, Fujian, China; 3Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, China
  • Received:2012-09-06 Revised:2012-10-08 Online:2013-02-05 Published:2013-02-05

Abstract: A series of novel Pt/BiOCl nanoplate photocatalysts were synthesized by a photodeposition method. The as-synthesized products were characterized by N2 physical adsorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, photoluminescence (PL) emission spectroscopy, and UV-Vis diffuse reflectance spectroscopy (DRS). The photocatalytic activity of the samples was evaluated by photocatalytic degradation of acid orange II under both UV light (λ = 254 nm) and visible light irradiation. The N2 physical adsorption test showed that the deposition of Pt nanoparticles could not produce obvious change in the specific surface area of the catalyst. The UV-Vis DRS results indicated that the presence of Pt nanoparticles could effectively increase the visible light absorption ability of Pt/BiOCl. The PL spectra indicated that Pt could effectively suppress the recombination of photogenerated hole-electron pairs of Pt/BiOCl. Activity tests showed that the deposition of Pt (1%–2%, mass fraction) greatly promotes the UV right photocatalytic activity. Pt also brought about an obvious visible light activity, which could be attributed to the visible light absorption and plasmon photocatalysis role of deposited Pt nanoparticles.

Key words: platinum nanoparticle, bismuth oxychloride, photocatalysis, visible light, acid orange II