[1]. Mariq M. M., Chase R. E., Xu N. and Laing P. M., “The effects of the catalytic converter and fuel sulfur level on motor vehicle particulate matter emissions light duty diesel vehicles,” Environ. Sci. Technol., Vol. 36, pp. 283-282, 2002.##
[2]. Shah S. D., Cocker D. R., Miller W. J. and Norbeck J. M., “Emission rates of particulate matter and elemental and organic carbon from in-use diesel engines,” Environ. Sci. Technol., Vol. 38, pp. 2544-2550, 2004.##
[3]. Zhang J., He K., Ge Y. and Shi X., “Influence of fuel sulfur on the characterization of PM10 from a diesel engine,” Fuel., Vol. 88, pp. 504-510, 2009.##
[4]. Zielinska B., Sagebiel J., McDonald J. D. and Lawson W. K., “Emission rates and comparative chemical composition from selected in-use diesel and gasoline-fueled vehicles,” J. Air Waste Manage. Assoc., Vol. 54, pp. 1138-1150, 2004.##
[5]. Wang D., Qian E. W., Amano H., Okata K., Ishihara A. and Kabe T., “Oxidative desulfurization of fuel oil: part I. Oxidation of dibenzothiophenes using tert-butyl hydroperoxide,” Appl. Catal. A Gen., Vol. 253, pp. 91-99, 2003.##
[6]. Omwoma S. and Thouvenot R., “Environmentally benign polyoxometalate materials,” Coordin. Chem. Rev., Vol. 286, pp. 17-29, 2015.##
[7]. Yongna Z., Lu W., Yuliang Z., Zongxuan J. and Can L., “Ultra-deep oxidative desulfurization of fuel oil catalyzed by dawson-type polyoxotungstate emulsion catalysts,” Chinese J. Catal., Vol. 32, pp. 235-239, 2011.##
[8]. Zhao P., Leng Y., Wang J., “Heteropolyanion-paired cross-linked ionic copolymer: An efficient heterogeneous catalyst for hydroxylation of benzene with hydrogen peroxide,” Chem. Eng. J., Vol. 204-206, pp. 72–78, 2012.##
[9]. Yamaura T., Kamata K., Yamaguchi K. and Mizuno N., “Efficient sulfoxidation with hydrogen peroxide catalyzed by a divanadium-substituted phosphotungstate,” Catal. Today, Vol. 203, pp. 76–80, 2013.##
[10] Costa V.V., Rocha K.A., Kozhevnikov I. and Gusevskaya E., “Isomerization of styrene oxide to phenylacetalde hyde over supported phosphotungstic heteropoly acid,” Appl. Catal. A Gen., Vol. 383, pp. 217–220, 2010.##
[11]. Su K., Li Z., Cheng B., Zhang L., Zhang M. and Ming J., “The studies on the Friedel–Crafts acylation of toluene with acetic anhydride over HPW/TiO2,” Fuel Process. Technol., Vol. 92, pp. 2011-2015, 2011##
[12]. Bando K.K., Sayama K., Kusama H. and Okabe K., “In-situ FT-IR study on CO2 hydrogenation over Cu catalysts supported on SiO2, A12O3, and TiO2,” Appl. Catal. A Gen., Vol.165, pp. 391-409, 1997.##
[13]. Sakulkhaemaruethai S., Pavasupree S., Suzuki. Y. and Yoshikawa S., “Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method-Effect of calcination conditions,” Materials Letters., Vol. 59, pp. 2965-2968, 2005##
[14]. Sclafani A., Palmisano L. and Schiavello M., “Influence of the Preparation Methods of TiO2 on the Photocatalytic Degradation of Phenol in Aqueous Dispersion,” J. Phys. Chem., Vol. 94, pp. 829-832, 1990.##
[15]. Tachikawa T., Fujitsuka M., Majima T., “Mechanistic Insight into the TiO2 Photocatalytic Reactions: Design of New Photocatalysts,” J. Am. Chem. Soc., Vol. 111, pp. 5259-5275, 2007.##
[16]. Ramírez-Verduzco L.F., Murrieta-Guevara F, García-Gutiérrez J. L., Martín-Castañón R. S., Martínez-Guerrero M. C., Montiel-Pacheco M. C., Mata-Díaz. R., “Desulfurization of middle distillates by oxidation and extraction process,” Petrol. Sci. Technol., Vol. 22, pp. 129-139, 2004.##
[17]. Zou C., Zhao P., Ge J., Qin Y., Lou P., “Oxidation/adsorption desulfurization of natural gas by bridged cyclodextrins dimer encapsulating polyoxometalate,” Fuel, Vol. 104, pp. 635-640, 2013.##
[18]. Cheng L., Dong S., “A novel potentiodynamic method of electrochemical growth for layer-by-layer film formation based on electrostatic interaction,” Electrochem. Commun., Vol. 1.5, pp. 159-162, 1999.##
[19]. Dai L.Y., Shan Y.K., He M.Y., “Synthesis and structure of tetrabasic tungstomolybdosilic complex with cobalt: K4H2 [SiW7Mo4Co (H2O) O39].22H2O,” J. Mol. Struct., Vol. 644(1), pp. 165-170, 2003.##
[20]. Yan X.M., Mei P., Lei J., Mi Y., Xiong L., Guo L., “Synthesis and characterization of mesoporous phosphotungstic acid/TiO2 nanocomposite as a novel oxidative desulfurization catalyst”. J. Molec. Catal. A Chem., 304(1), pp. 52-57, 2009.##
[21]. Shojaei A.F., Rezvani M.A., Loghmani M.H., “Comparative study on oxidation desulphurization of actual gas oil and model sulfur compounds with hydrogen peroxide promoted by formic acid: Synthesis and characterization of vanadium containing polyoxometalate supported on anatase crushed nanoleaf,” Fuel Process. Technol., Vol. 118, pp. 1-6, 2014.##
[22]. Tang L., Luo G., Kang L., Zhu M., Dai B., “A novel [Bmim]PW/HMS catalyst with high catalytic performance for the oxidative desulfurization process,” Korean J. Chem. Eng., Vol. 30 (2), pp. 314-320, 2013.##
[23]. Haber J., Pamin K., Matachowski L., Mucha D., “Catalytic performance of the dodecatungstophosphoric acid on different supports,” Appl. Catal. A Gen., Vol. 256, pp. 141-152, 2003.##
[24]. Wu N., Li B., Ma W., Han Ch., “Synthesis of lacunary polyoxometalate encapsulated into hexagonal mesoporous silica and their catalytic performance in esterification,” Micropor. Mesopor. Mat., Vol.186, pp. 155-162, 2014.##
[25]. Huang W., Zhu W., Li H., Shi H., Zhu G., Liu H., Chen G., “Heteropolyanion-based ionic liquid for deep desulfurization of fuels in ionic liquids,” Ind. Eng. Chem. Res, Vol.49, pp. 8998-9003, 2010.##