Photodegradation of Aqueous Sodium Carbonate by KNiF₃ Nanoparticles

Abstract:

The nanoKNiF₃ with its particles size of 50-70 nm was prepared by solvent-thermal method and characterized by means of XRD, TEM and IR technologies. Photocatalysed reduction of aqueous Na₂CO₃ was carried out by using nanoKNiF₃ powders. Formic acid, formaldehyde and methyl alcohol were identified as photoproducts, and were measured in spectrophotometry using Nash reagent. It shows that nanoKNiF₃ has superior photocatalytic activity. Irradiation leads to the production of electrons in the conduction band of the KNiF₃ nanoparticles. It is likely that the photoproduced electrons reduce CO₃^2- initially to HCOO^-, and then to HCHO and CH₃OH.

• Periodical: Applied Mechanics and Materials (Volumes 341-342)
• Pages: 59-63
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.341-342.59
• Online since: July 2013
• Authors: Qian Nan Li, Qiu Hua Yang, Hai Yun Shen
• Keywords: Nano KNiF₃, Photocatalysed Reduction, Sodium Carbonate

References

[1] Ruinian Hua, Bingfu Lei, Demin Xie, Chunshan Shi. Synthesis of the complex fluoride LiBaF3 and optical spectroscopy properties of LiBaF3: M(M=Eu, Ce) through a solvothermal process, J. Solid State Chemistry., Vol. 175 (2003), pp.284-288.

DOI: 10.1016/s0022-4596(03)00282-2

[2] M.W. Shafer, T.R. McGuire. Preparation and properties of ferrimagnets in the RbMgF3-RbCoF3 system, J. Physics and Chemistry of Solids., Vol. 30 (1969), p.1989-(1997).

DOI: 10.1016/0022-3697(69)90177-2

[3] D.K. Sardar, W.A. Sibley, and R. Alcala. Optical absorption and emission from irradiated RbMgF3: Eu2+ and KMgF3: Eu2+, J. luminescence., Vol. 27 (1982), pp.401-411.

DOI: 10.1016/0022-2313(82)90040-0

[4] R.A. Heaton, C.L. Chun. Electronic energy-band structure of the KMgF3 crystal, J. Phys. Rev. B., Vol. 25 (1982), pp.3538-3549.

[5] Akira Yoshiasa Prof*, Daisuke Sakamoto, Hiroki Okudera, et al. Electrical Conductivities and Conduction Mechanisms of Perovskite-type Na1-xKxMgF3 (x = 0, 0. 1, 1) and KZnF3, J. Inorganic and General Chemistry., Vol. 631 (2005), pp.502-506.

DOI: 10.1002/zaac.200400358

[6] Robert W. Smith, Arthur Mar, Jianjun Liu, et al. Orientational disorder in sodium cadmium trifluoride trihydrate, NaCdF3·3H2O, J. Materials Research Bulletin., Vol. 41 (2006), pp.667-673.

DOI: 10.1016/j.materresbull.2005.07.015

[7] R.E. Boyett, M.G. Ford, P.A. Cox. Molecular dynamics simulation of ionic conductivity in the fluoride-perovskite KCaF3, J. Solid State Ionics., Vol. 81 (1995), pp.61-68.

DOI: 10.1016/0167-2738(95)00172-3

[8] B.K. Sharma, R. Ameta, J. Kaur, et al. Photocatalytic reduction of carbon dioxide over ferrocyanide-coated titanium dioxide powder, J. Int. J. Energy Res., Vol. 21 (1997), pp.923-929.

DOI: 10.1002/(sici)1099-114x(199708)21:10<923::aid-er299>3.3.co;2-2

[9] Sarita J, Geeta D, Jitendra V, et al. Photocatalytic reduction of alkali carbonates in the presence of methylene blue, J. Int J Energy Res., Vol. 23 (1999), pp.71-77.

[10] B. Aurian-blajeni, M. Halmann and J. Manassen. Photoreduction of carbon dioxide and water into formaldehyde and methanol on semiconductor materials, J. Sol. Energy., Vol. 25 (1980), pp.165-170.

DOI: 10.1016/0038-092x(80)90472-7

[11] F.R. Fan, A.J. Bard. Spectral sensitization of the heterogeneous photocatalytic oxidation of hydroquinone in aqueous solutions at phthalocyanine-coated titanium dioxide powders, J. Am. Chem. Soc., Vol. 101 (1979), p.6139.

DOI: 10.1021/ja00514a056

[12] A. Mills, G. Porter. Photosensitised dissociation of water using dispersed suspensions of n-type semiconductors, J. Chemical Society, Faraday Transactions 1., Vol. 78 (1982), p.3659.

DOI: 10.1039/f19827803659

[13] H. Takagi, Y. fujishiro and M. awano, et al. Preparation and characterization of the Sb-doped TiO2 photocatalysts, J. materials science., Vol. 36 (2001), p.949.

[14] O. Carp, C.L. Huisman and A. Reller. Photoinduced reactivity of titanium dioxide, J. Progress in Solid State Chemistry., Vol. 32 (2004), pp.33-177.

DOI: 10.1016/j.progsolidstchem.2004.08.001

[15] M.W. Raphael, M. A. Malati. The photocatalysed reduction of aqueous sodium carbonate using platinized titania, J. Photochemistry and Photobiology A: Chemistry., Vol. 46 (1989), p.367.

DOI: 10.1016/1010-6030(89)87053-4