One-step Preparation of H3PW12O40/Bi2WO6 Nano-photocatalysts by Microwave Liquid Process and Its Photocatalysis Denitrification Properties†

doi:10.7503/cjcu20140021

Abstract

Abstract:

Immobilized nano-photocatalysts H₃PW₁₂O₄₀/Bi₂WO₆ was prepared by microwave liquid one-step process. The morphology, structure and properties of the prepared catalysts were characterized and investigated by UV-Vis diffuse reflectance spectra, scanning electron microscopy(SEM), NH₃ temperature programmed desorption(NH₃-TPD), pyridine adsorption Fourier transform infrared spectroscopy(Py-FTIR) and X-ray diffraction(XRD), respectively. Their photocatalytic denitrification properties were evaluated by using the model oil with 15 mg/g pyridine. The results show that H₃PW₁₂O₄₀/Bi₂WO₆ photocatalysts could be more efficiently synthesized by microwave liquid one-step process, and it could be excited by lower photon energy than that synthesized by common impregnation immobilization method. Immobilization of H₃PW₁₂O₄₀ on Bi₂WO₆ could improve the acid content in Bi₂WO₆ nanoparticle surface, change the acid strength of Bi₂WO₆ precursor solution thereby controll the catalyst morphology. The influences of preparation conditions on photocatalytic properties of H₃PW₁₂O₄₀/Bi₂WO₆ were investigated. It was found that H₃PW₁₂O₄₀/Bi₂WO₆ nano-photocatalyst, with the H₃PW₁₂O₄₀ loading(mass fraction) of 15%, prepared by microwave liquid one-step process under microwave power 800 W for 90 min possessed the best performance in the photocatalytic denitrification of model oil containing photocatalysts(mass ratio of catalyst to model oil was 1/300) after 500 W Xe lamp irradiation for 60 min, with the denitrification rate reached 92.63%.

Key words: Microwave, One-step, H3PW12O40, Bi2WO6, Photocatalysis, Denitrification

CLC Number:

O644

TrendMD:

CHEN Ying, XING Chen, JI Shenglun, LIANG Hongbao, ZHANG Hongyu, CHEN Yan. One-step Preparation of H₃PW₁₂O₄₀/Bi₂WO₆Nano-photocatalysts by Microwave Liquid Process and Its Photocatalysis Denitrification Properties^†[J]. Chem. J. Chinese Universities, 2014, 35(6): 1277.

Figures/Tables 14

Fig.1 XRD patterns of Bi2WO6 prepared under 800 W microwave power for different reaction timet/min: a. 10; b. 30; c. 60; d. 90; e. 120.

Fig.2 SEM images of Bi2WO6 prepared under 800 W microwave power for different reaction timet/min: (A) 10; (B) 30; (C) 60; (D) 90; (E) 120.

Fig.3 XRD patterns of H3PW12O40/Bi2WO6 with different H3PW12O40 loadingsw(H3PW12O40)(%): a. 5; b. 10; c. 15; d. 20; e. 25.

Fig.4 SEM images of H3PW12O40/Bi2WO6 with different H3PW12O40 loadingsw(H3PW12O40)(%): (A) 5; (B) 10; (C) 15; (D) 20; (E) 25.

Fig.5 NH3-TPD spectra of H3PW12O40/Bi2WO6 with different H3PW12O40 loadingsw(H3PW12O40)(%): a. 5; b. 10; c. 15; d. 20; e. 25.

Fig.6 Pyridine adsorption FTIR spectrum of 15%H3PW12O40/Bi2WO6

Fig.7 N2 adsorption-desorption isotherms for 15%H3PW12O40/Bi2WO6(a) and Bi2WO6(b)

Fig.8 BJH pore size distribution curves of 15%H3PW12O40/Bi2WO6(a) and Bi2WO6(b)

Fig.9 UV-Vis diffuse reflectance spectra of Bi2WO6(a), H3PW12O40/Bi2WO6(T)(b) and H3PW12O40/Bi2WO6(c) catalysts

Fig.10 Mechanism of H3PW12O40/Bi2WO6 for coupling

Table 1 Results of denitrification performance of H3PW12O40/Bi2WO6(microwave power: 800 W; reaction time: 90 min) with different loadings of H3PW12O40 with or without light(photocatalytic time: 60 min)

w(H₃PW₁₂O₄₀)(%)	0	5	10	15	20	25
Denitrification rate(%)	80.78	82.29	85.96	92.63	89.21	86.46
Denitrification rate(without light)(%)	22.83	27.69	30.24	36.21	31.18	24.83

Fig.11 Denitrification performance of H3PW12O40/Bi2WO6 catalysts prepared under 800 W microwave power for different time and with different H3PW12O40 loadingsXenon lamp: 500 W; photocatalytic time: 60 min; mcatalyst/msimulated oil: 1/300. Sythestic time of catalysts/min: a. 10; b. 30; c. 60; d. 90; e. 120.

Fig.12 Denitrification rate of simulated oil with di-fferent addition amount of 15%H3PW12O40/Bi2WO6 and photocatalytic timeXenon lamp: 500 W; mcatalysts/msimulated oil: a. 1/500; b. 1/400; c. 1/300; d. 1/200.

Fig.13 Denitrification performance of catalysts for different cycle timesXenon lamp: 500 W; photocatalytic time: 60 min; mcatalysts/msimulated oil: 1/300.

References 26

[1]	Yosuke S., Ki-Hyouk C., Yozo K., Isao M., Applied Catalysis. B: Environmental, 2004, 53(3), 169—174
[2]	Song H., Xu X. W., Dai M., Song H. L., Chem. J. Chinese Universities, 2013, 34(11), 2609—2616
	(宋华, 徐晓伟, 代敏, 宋华林.高等学校化学学报, 2013,34(11), 2609—2616)
[3]	Soni K. K., Chandra M. K., Dalai A. K., Adjaye J., Microporous and Mesoporous Materials, 2012,152, 224—234
	Soni K. K., Chandra M. K., Dalai A. K., Adjaye J., Microporous and Mesoporous Materials, 2012,152, 224—234
[4]	Manabuk, Seijit, Katsuakil, Journal of the Japan Ptroleum Institute, 2007, 50(1), 44—52
[5]	Song H., Guo Y. T., Li F., Yu H. K., Acta Physico-Chimica Sinica, 2010, 26(9), 2461—2467
	(宋华, 郭云涛, 李锋, 于洪坤.物理化学学报, 2010,26(9), 2461—2467)
[6]	Fu H. B., Pan C. S., Yao W. Q., Zhu Y. F., The Journal of Physical Chemistry. B: Condensed Matter, Materials, Surfaces, Interfaces and Biophysical, 2005, 109(47), 22432—22439
[7]	Rafiee E., Shahbazi F., Joshaghani M., Tork F., J. Mol. Catal. A: Chem., 2005, 242(1/2), 129—134
[8]	Matsuda A., Daiko Y., Ishida T., Tadanaga K., Tatsumisago M., Solid State Ionics, 2007, 178(7—10), 709—712
[9]	Hisao H., Etsuko H., Kazuhide K., Hisahiro E., Takashi I., Journal of Molecular Catalysis. A: Chemical, 2004, 211(1/2), 35—41
[10]	Gkika E., Troupis A., Hiskia A., Papaconstantinou E., Applied Catalysis B: Environmental, 2006, 62(1/2), 28—34
[11]	Kudo A., Hijii S., Chem. Lett., 1999, 28(10), 1103—1104
[12]	Tang J. W., Zou Z. G., Ye J. H., Catal. Lett., 2004, 92(53), 256—270
[13]	McDowell N. A., Knight K. S., Lightfoot P., Chem.-Eur. J., 2006, 12(5), 1493—1499
[14]	Chen Y., Li H., Liang Y. N., Qi X. F., Mao B. B., Acta Petrolei Sinica(Petroleum Processing Section), 2011, 27(6), 910—915
	(陈颖, 李慧, 梁宇宁, 祁雪峰, 毛贝贝. 石油学报(石油加工), 2011, 27(6), 910—915)
[15]	SH/T 0162—1992, Method for the Determination of Basic Nitrogen in Petroleum Products, Sinopec Group, 1992
[16]	Zheng Y. Q., Tan G. Q., Bo H. Y., Xia A., Ren H. J., Journal of the Chinese Ceramic Society, 2011, 39(3), 481—485
	(郑玉芹, 谈国强, 博海洋, 夏傲, 任慧君.硅酸盐学报, 2011,39(3), 481—485)
[17]	Ye T. X., Zhang Y. H., Liu J. Y., Ma X. N., Zhang B., Acta Petrolei Sinica(Petroleum Processing Section), 2010, 26(1), 104—109
	(叶天旭, 张予辉, 刘京燕, 马雪妮, 张斌. 石油学报(石油加工), 2010, 26(1), 104—109)
[18]	Song J. M., Wang H., Li Y. P., Zhu X. M., Li L. L., Yang J., Jin B. K., Science China(Chemistry), 2013, 43(2), 163—170
	(宋继梅, 王红, 李亚平, 朱绪敏, 李亮亮, 杨捷, 金葆康. 中国科学(化学), 2013, 43(2), 163—170)
[19]	Guo D. S., Ma Z. F., Jiang Q. Z., Ye W. D., Li C. B., Chinese Journal of Catalysis, 2007, 28(7), 627—634
	(郭岱石, 马紫峰, 蒋淇忠, 叶伟东, 李春波, 催化学报, 2007, 28(7), 627—634)
[20]	Dambournet D., Leclerc H., Vimont A., Lavalley J. C., Nickkho-Amiry M., Winfield J. M., Physical Chemistry Chemical Physics, 2009, 11(9), 1369—1379
[21]	Chen Y., Mao B. B., Zhao L. C., Wang L., Li H., Acta Petrolei Sinica(Petroleum Processing Section), 2012, 28(2), 303—309
	(陈颖, 毛贝贝, 赵连成, 王磊, 李慧. 石油学报(石油加工), 2012, 28(2), 303—309)
[22]	Gui S. M, Zhang W. D., Su Q. X., Chen C. H., Journal of Solid State Chemistry, 2011, 184(8), 1977—1982
[23]	Liu Y., Ji H. W., Zhou D. F., Zhu X. F., Li Z. H., Chem. J. Chinese Universities, 2014, 35(1), 19—25
	(刘阳, 季宏伟, 周德凤, 朱晓飞, 李朝晖.高等学校化学学报, 2014,35(1), 19—25)
[24]	Alexander W. S., Christopher S. G., Wei Q., Mostafa A. E., Ye C., Valeria T. M., Kenneth S., Nano Letters, 2006, 6(9), 1940—1949
[25]	Sun Y. P., Zhao L., Zhao J. L., Hou Y. P., Chong F. G., Liang Y., Chemical Engineering of Chinese Universities, 2006, 20(4), 554—558
	(孙亚萍, 赵靓, 赵景联, 侯永平, 种法国, 梁勇.高校化学工程学报, 2006,20(4), 554—558)
[26]	Zhou L., Wang W. Z., Zhang L. S., Journal of Molecular Catalysis A: Chemical, 2007, 268, 195—200

One-step Preparation of H₃PW₁₂O₄₀/Bi₂WO₆Nano-photocatalysts by Microwave Liquid Process and Its Photocatalysis Denitrification Properties^†

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