Visible-Light Driven LaNiO3 Nanosized Photocatalysts Prepared by a Sol-Gel Process


Article Preview

The LaNiO3 nanoparticles were prepared by a sol-gel process. The LaNiO3 nanoparticles were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (DRS). XRD and SEM demonstrate the successful synthesis of single phase perovskite LaNiO3 and an average grain size of 80 nm in diameter. It was found that the as-prepared LaNiO3 shows strong visible-light absorption with absorption onset of 545 nm, indicating a narrow optical band gap of 2.28 eV. Consequently, LaNiO3 nanoparticles show high visible-light photocatalytic activity for decomposition of methyl orange in comparison with the commercial Degussa P25. The photocatalytic experiment shows the high photocatalytic activity for the decomposition of methyl orange under visible-light irradiation, which is attributed to the strong visible-light absorption.



Edited by:

Fei Hu and Beibei Wang




P. S. Tang et al., "Visible-Light Driven LaNiO3 Nanosized Photocatalysts Prepared by a Sol-Gel Process", Advanced Materials Research, Vol. 279, pp. 83-87, 2011

Online since:

July 2011




[1] M. R. Hoffmann, S. T. Martin, W. Choi, and D. W. Bahnemann: Environmental Applications of Semiconductor Photocatalysis. Chem. Rev. Vol. 95 (1995), pp.69-96.

[2] Y. H. Ng, I. V. Lightcap, K. Goodwin, M. Matsumura, and P. V. Kamat: To What Extent Do Graphene Scaffolds Improve the Photovoltaic and Photocatalytic Response of TiO2 Nanostructured Films. J. Phys. Chem. Lett. 1, 15 (2010), pp.2222-2227.


[3] S. Sakthivel and H. Kisch: Daylight photocatalysis by carbon -modified titanium dioxide. Angew. Chem. Int. Ed. Vol. 42(2003), pp.4908-4911.


[4] J. Gole, J. Stout, C. Burda, Y. Lou and X. Chen: Highly Efficient Formation of Visible Light Tunable TiO2-xNx Photocatalysts and Their Transformation at the Nanoscale. J. Phys. Chem. B, 108, 4 (2004), pp.1230-1240.


[5] J. Tang, Z. Zou, M. Katagiri, T. Kako, J. Ye: Photocatalytic degradation of MB on MIn2O4 (M = alkali earthmetal) under visible light: effects of crystal and electronic structure on the photocatalytic activity. Catal. Today Vol. 93–95(2004).


[6] J. Yu, Y. Zhang, A. Kudo: Synthesis and photocatalytic performances of BiVO4 by ammonia co-precipitation process. J. Solid State Chem. 182, 2(2009), pp.223-228.


[7] P. Tang, H. Chen, F. Cao, G. Pan, K. Wang, M. Xu, Y. Tong: Nanoparticulate SnS as an efficient photocatalyst under visible-light irradiation. Mater. Lett. Vol. 65(2011), pp.450-452.


[8] X. Zhao, D. Chen, X. Lou, Q. Cheng, and Y. Lu: Study on PhotocataIytic Property of Perovskite Composite Oxide LaNiO3. J. Henan Nor. Univ. 33, 2(2005), pp.69-72.

[9] J. Zhu, N. Zhang, J. Zhong, S. Tong: Preparation of La-Ni mixed oxides by solid phase method and their photocatalytic activity. Industr. Catal. 14, 3(2006) , pp.48-51.

[10] Y. Li , S. Yao, W. Wen, L. Xue, Y. Yan: Sol-gel Combustion Synthesis and Visible-Light Driven Photocatalytic Property of Perovskite LaNiO3. J. Alloys Compd. Vol. 491 (2010) , pp.560-564.


[11] A. Zachariah, K. V. Baiju, S. Shukla, K. S. Deepa, J. James, and K. G. K. Warrier: Synergistic Effect in Photocatalysis As Observed for Mixed-Phase Nanocrystalline Titania Processed via Sol-gel Solvent Mixing and Calcination. J. Phys. Chem. C, Vol. 112(2008).