Sol-gel Synthesis of Bi4Ti3O12/SiO2 and Its Photocatalytic Activity

doi:10.11901/1005.3093.2016.092

Chinese Journal of Materials Research

2016, Vol. 30

Issue (9): 675-680 DOI: 10.11901/1005.3093.2016.092

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Sol-gel Synthesis of Bi₄Ti₃O₁₂/SiO₂ and Its Photocatalytic Activity

Hong WANG,Feifei BI,Lili YANG,Wenjie ZHANG

School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China

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Hong WANG,Feifei BI,Lili YANG,Wenjie ZHANG. Sol-gel Synthesis of Bi₄Ti₃O₁₂/SiO₂ and Its Photocatalytic Activity. Chinese Journal of Materials Research, 2016, 30(9): 675-680.

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Abstract

Bi₄Ti₃O₁₂/SiO₂ photocatalytic material coated quartz sand was prepared by sol-gel method. The effect of deposition process on physical property and photocatalytic activity of the deposited Bi₄Ti₃O₁₂ were studied. The deposited Bi₄Ti₃O₁₂ shows a layered perovskite structure on the surface of the amorphous quartz sand. Whlie the deposition process does not alter the electron binding energies of the deposited Bi₄Ti₃O₁₂. The adsorption of reactive brilliant red X-3B on pure Bi₄Ti₃O₁₂ and xBi₄Ti₃O₁₂/SiO₂ with different deposited among χ is not more than 3%. Photocatalytic activity of the deposited Bi₄Ti₃O₁₂ is enhanced, among others the Bi₄Ti₃O₁₂/SiO₂ with 50 mass% Bi₄Ti₃O₁₂has the maximum activity. The rate constants of photocatalytic reactions for Bi₄Ti₃O₁₂ and 50%Bi₄Ti₃O₁₂/SiO₂ are 0.021 s^-1and 0.027 s^-1 respectively.

Key words: inorganic non-metallic materials bismuth titanate reactive brilliant red X-3B photocatalytic quartz sand

Received: 07 February 2016

Fund: *Supported by National Natural Science Foundation for Youths of China No 51504154, Natural Science Foundation of Liaoning Province No 2015020186, and Open Research Fund of Key Laboratory of Wastewater Treatment Technology of Liaoning Province No 4771004kfs

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	Hong WANG
	Feifei BI
	Lili YANG
	Wenjie ZHANG

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https://www.cjmr.org/EN/10.11901/1005.3093.2016.092 OR https://www.cjmr.org/EN/Y2016/V30/I9/675

Fig.1 SEM images of quartz sand and xBi₄Ti₃O₁₂/SiO₂ (a) SiO₂; (b) 30%Bi₄Ti₃O₁₂/SiO₂; (c) 50%Bi₄Ti₃O₁₂/SiO₂; (d) 70%Bi₄Ti₃O₁₂/SiO₂; (e) Bi₄Ti₃O₁₂

Fig.2 TEM images of 50%Bi₄Ti₃O₁₂/SiO₂

Fig.3 XRD patterns of Bi₄Ti₃O₁₂ and xBi₄Ti₃O₁₂/SiO₂

Fig.4 XPS survey spectra of (a) Bi₄Ti₃O₁₂ and (b) 50%Bi₄Ti₃O₁₂/SiO₂

Fig.5 XPS spectra of (a) Bi4f, (b) Ti2p, and (c) O1s in Bi₄Ti₃O₁₂and 50%Bi₄Ti₃O₁₂/SiO₂

Fig.6 Adsorption and photocatalytic degradation of RBR X-3B on xBi₄Ti₃O₁₂/SiO₂ as the factor of Bi₄Ti₃O₁₂ loading content (The irradiation time was 30 min)

Fig.7 Photocatalytic degradation of RBR X-3B during irradiation on Bi₄Ti₃O₁₂ and 50%Bi₄Ti₃O₁₂/SiO₂

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