Preparation and Photocatalytic Activity of (Fe3+/Gd3+/TiO2) Coated SiO2 Catalyst

doi:10.11901/1005.3093.2013.874

Chinese Journal of Materials Research

2014, Vol. 28

Issue (8): 633-640 DOI: 10.11901/1005.3093.2013.874

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Preparation and Photocatalytic Activity of (Fe³⁺/Gd³⁺/TiO₂) Coated SiO₂ Catalyst

Zhibo SUN¹,Yidong YIN^1,^**(

),Naiying FAN¹,Guozhen HUANG¹,Qiuyao QU¹,Yingqiu DU^1,²,Yuexin CHEN¹,Shichao MA¹

1. School of Chemical Engineering & Materials, Heilongjiang University, Harbin 150080
2. Inspection and Testing Center for Quality of Cereals and Its Products (Harbin), Ministry of Agriculture,
Harbin 150086

Cite this article:

Zhibo SUN,Yidong YIN,Naiying FAN,Guozhen HUANG,Qiuyao QU,Yingqiu DU,Yuexin CHEN,Shichao MA. Preparation and Photocatalytic Activity of (Fe³⁺/Gd³⁺/TiO₂) Coated SiO₂ Catalyst. Chinese Journal of Materials Research, 2014, 28(8): 633-640.

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Abstract

Fe³⁺and Gd³⁺ co-doped TiO₂catalyst (Fe³⁺/Gd³⁺/TiO₂) and (Fe³⁺/Gd³⁺/TiO₂) finished SiO₂ catalyst (Fe³⁺/Gd³⁺/TiO₂-SiO₂) were synthesized by sol-gel method, and then characterized by XRD , SEM and DRS. The effect of processing parameters on their photocatalytic activity was investigated by measuring the effectiveness of the catalysts for degradation of nitrite. The results show that (Fe³⁺/Gd³⁺/TiO₂-SiO₂) possesses significantly higher photocatalytic activity rather than (Fe³⁺/Gd³⁺/TiO₂). A dose 1.0 g/L of the catalyst (Fe³⁺/Gd³⁺/TiO₂-SiO₂), which has been calcinated at 500^oC for 2 h and aged for 1 h, exhibits an optimal photocatalytic activity i.e. a degradation efficiency 90.46% for nitrite.

Key words: inorganic non-metallic materials TiO₂ coated SiO₂ sol-gel photocatalytic nitrite

Received: 19 November 2013

Fund: *Supported by Heilongjiang Provincial Department of Education Science and Technology Research Project No. 12511380 and Natural Science Foundation of Heilongjiang Province of China No. B200811.

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	Articles by authors
	Zhibo SUN
	Yidong YIN
	Naiying FAN
	Guozhen HUANG
	Qiuyao QU
	Yingqiu DU
	Yuexin CHEN
	Shichao MA

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https://www.cjmr.org/EN/10.11901/1005.3093.2013.874 OR https://www.cjmr.org/EN/Y2014/V28/I8/633

Fig.1 X-ray spectra of Fe/Gd/TiO₂, Fe/Gd/TiO₂-SiO₂ and SiO₂

Fig.2 X-ray spectra of Fe/Gd/TiO₂-SiO₂ and SiO₂ for different loading times

Fig.3 SEM images of Fe/Gd/TiO₂-SiO₂ for different loading times (a, b) 1 time, (c) 2 times, (d) 3 times, (e, f) 4 times

Fig.4 SEM images and EDX spectra of SiO₂ (a) and Fe/Gd/TiO₂-SiO₂ (b)

Fig.5 DRS photographs of TiO₂, Fe/Gd/TiO₂ and Fe/Gd/TiO₂-SiO₂

Fig.6 X-ray spectra of Fe/Gd/TiO₂-SiO₂ at different temperature (A: Anatase, R: Rutile)

Fig.7 Effect of calcination temperatures on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

Fig.8 Effect of calcination time on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

Fig.9 Effect of deposition time on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

Fig.10 Effect of photocatalysts amount on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

Fig.11 Effect of reuse times on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

Fig.12 Effect of different materials on the photocatalytic activity of Fe/Gd/TiO₂-SiO₂

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