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Proceedings Paper

Preparation and photocatalysis properties of La-doped nano-NiO novel photocatalyst
Author(s): Peng Liu; Zhiyuan Yang; Pan Ran
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Paper Abstract

The novel photocatalyst, La-doped Nano-NiO, was prepared by sol-gel with nickel nitrate hexahydrate and lanthanum salt, characterized by means of XRD. The photocatalytic activities of prepared La-NiO photocatalysts were evaluated by degradation of Direct Bordeaux (DB) solution as model compound under irradiation of UV and daylight lamp. The results show that Pure and La-doped NiO are a cubic perovskite structure with space group Fm-3m (225). The grain size of NiO powder decreases whereas the crystal plane spacing of NiO increases with the doping contents of La in NiO increasing. The degradation rates of two kinds of La-doped NiO after UV irradiation for 180min are 98.5% and 65.2%, under daylight, reaches 66.3% and 71.9% respectively. Using six times, the degradation rates under UV are still 49.5% and 47.7%. Meanwhile, the catalyst surface reaction rate constants (Kr) have greatly improved comparing with Pure NiO. The XRD analysis shows that a small amounts of perovskite-like structure of LaxNiOy exists in composite structure of La-NiO, which contributes to the increase of photo-catalytic activities.

Paper Details

Date Published: 20 October 2009
PDF: 8 pages
Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749361 (20 October 2009); doi: 10.1117/12.840080
Show Author Affiliations
Peng Liu, Xi'an Univ. of Science and Technology (China)
Zhiyuan Yang, Xi'an Univ. of Science and Technology (China)
Pan Ran, Xi'an Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 7493:
Second International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Anand K. Asundi; Wolfgang Ecke, Editor(s)

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