A Novel Visible– Light Driven Photocatalyst: Ethylene Glycol–Citrate Sol–Gel Synthesis, Microwave–Assisted Calcination, and Photocatalytic Efficiency
American Journal of Physical Chemistry
Volume 3, Issue 6, December 2014, Pages: 102-108
Received: Nov. 29, 2014;
Accepted: Dec. 7, 2014;
Published: Dec. 18, 2014
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Hakim Qaid Naji Museed Alarique, Department of Chemistry, Faculty of Education, Taiz University, Taiz, Yemen
Elyas Sadeq Al-Aghbari, Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
Niyazi Abdulmawla Sallam Al–Areqi, Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
Ahlam Al–Alas, Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
Khalid Ahmed Saeed Ghaleb, Department of Chemistry, Faculty of Applied Science, Taiz University, Taiz, Yemen
A novel visible– light driven photocatalyst, BIMNVOX.x was synthesized by ethylene glycol–citrate sol–gel route and microwave- assisted calcination. The phocatalyst was characterized structurally by X–ray powder diffraction (XRPD) and simultaneous thermogravimetric–differential thermal analysis (TG–DTA). Its optical and surface properties were determined by means of UV–vis absorption spectrophotometry and BET– nitrogen adsorption isotherm measurements, respectively. The photocatalytic efficiency of BIMNVOX.x system was investigated by applying the pseudo first- order kinetic model to the photocatalytic degradation reaction of crystal violet, CV dye in aqueous solution under visible light irradiation. The β (orthorhombic) –BIMNVOX phase, space group Acam exhibited the highest photocatalytic degradability, indicating that the photocatalytic efficiency of BIMNVOX catalyst is essentially enhanced by the increased number of catalyst active sites, irrespective of the kind of phase stabilized and the increasing photoabsorption ability with Mn dopant content. Moreover, the possible photocatalytic degradation mechanism of aqueous CV dye solution under visible light irradiation was also proposed.
Hakim Qaid Naji Museed Alarique,
Elyas Sadeq Al-Aghbari,
Niyazi Abdulmawla Sallam Al–Areqi,
Khalid Ahmed Saeed Ghaleb,
A Novel Visible– Light Driven Photocatalyst: Ethylene Glycol–Citrate Sol–Gel Synthesis, Microwave–Assisted Calcination, and Photocatalytic Efficiency, American Journal of Physical Chemistry.
Vol. 3, No. 6,
2014, pp. 102-108.
Mckay, G.; Porter, J.F.; Prasad, G.R. 1998. The removal of dye colors from aqueous solutions by adsorption on low cost materials. Water Air Soil Pollut. 114, 423–438.
Chen, C.C.; Chaudhary, A.J. & Grimes, S.M. 2005. Photodegradation of acid blue –29 and ethyl violet in the presence of NaOH and aluminum ions. J. Hazard. Mater. 117, 171–178.
Littlefield, N.A.; Blackwell, B.N.; Hewitt, C.C. and Gaylor, D.W. 1985. Chronic toxicity and carcinogenicity studies of gentian violet in mice. Fundam. Appl. Toxicol. 5, 902–912.
Chen, C–.Y. ; Kuo, J–.T.; Yang, H–.A. & Chung, Y–.C. 2013. A coupled biological and photocatalysis pretreatment system for the removal of crystal violet from wastewater. Chemosphere 92, 695–701.
Mahmoodi, N. M.; Arami, M.; Limaee, N.Y. 2006. Photocatalytic degradation of triazinic ring–containing azo dye (Reactive Red 198) by using immobilized TiO2 photoreactor: Bench scale study. J. Hazard. Mater. B133, 113–118.
Legrini, O.; Oliveros, E. and Braun, A.M. 1993. Photochemical processes for water treatment. Chem. Rev. 93, 671–698.
Konstantinou, I.K. & Albanis, T.A. 2004. TiO2–assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations: A review. Appl. Catal. B: Environ. 49, 1–14.
Abraham, F.; Debreuille– Gresse, M.F.; Mairesse, G. & Nowogrocki, G. 1988. Phase transition and ionic conductivity in Bi4V2O11 An oxide with a layered structure. Solid State Ionics 28–30, 529–538.
Boivin, J.C. & Mairesse, G. 1998. Recent developments in fast oxide ion conductors. Chem. Mater. 10, 2870–2888.
Malys, M. ; Abrahams, I.; Krok, F.; Wrobel, W. & Dygas, J.R. 2008. The appearance of an orthorhombic BIMEVOX phase in the system Bi2MgxV1– xO5.5 – 3x/2 – δ at high values of x. Solid State Ionics 179, 82–87.
Beg, S. & Al–Areqi, N.A.S. 2009. Structural and electrical study of CeIV–substituted bismuth vanadate. J. Phys. Chem. Solids 70, 1000–1007.
Beg, S.; Al–Areqi, N.A.S. & Al–Alas, A. 2009. Composition dependance of phase transition and ionic conductivity in BIHFVOX system. J. Alloys Compds 479, 107–112.
Beg, S.; Al–Alas, A. & Al–Areqi, N.A.S. 2010. Layered Aurivillius compound: Synthesis, characterization and electrical properties. J. Alloys and Compds 504, 413–419.
Thakral, V. & Uma, S. 2010. Investigation of visible light photocatalytic behavior of Bi4V2O11–δ and BIMEVOX (ME = Al, Ga) oxides. Mater. Res. Bull. 45, 1250–1254.
Al–Areqi, N.A.S.; Al–Kamali, A.S.N.; Ghaleb, Kh.A.S.; Al–Alas A. & Al–Mureish, Kh. 2014. Influence of phase stabilization and perovskite vanadate oxygen vacancies of the BINIVOX catalyst on photocatalytic degradation of azo dye under visible light irradiation. Rad. Eff. Def. Solids 169, 117–128.
Al–Areqi, N.A.S.; Al–Alas, A.; Al–Kamali, A.S.N.; Ghaleba, Kh.A.S. & Al–Mureish, Kh. 2014. Photodegradation of 4–SPPN dye catalyzed by Ni(II)–substituted Bi2VO5.5 system under visible light irradiation: Influence of phase stability and perovskite vanadate–oxygen vacancies of photocatalyst. J. Mol. Cata. A: Chem. 381, 1– 8.
Zheng, Y.; Duan, F.; Chen, M.Q. & Xie, Y. 2010. Synthetic Bi2O2CO3 nanostructures: novel photocatalyst with controlled special surface exposed. J. Mol. Catal. A: Chem. 317, 34–40.
Hervoches, C.H. ; Steil, M.C.& Muccillo, R. 2004. Synthesis by the polymeric precursor technique of Bi2Co0.1V0.9O5.35 and electrical properties dependence on the crystallite size. Solid State Sci 6 (2004) 173–177.
Li, E.J.; Xia, K.; Yin, S.F.; Dai, W. L.; Luo, S. L. & Au, C.T. 2010. Preparation, characterization and photocatalytic activity of Bi2O3–MgO composites. Mater. Chem. Phys. 125, 236–241.
Krok, F.; Abrahams, I.; Zadrozna, A.; Małys, M.; Bogusz, W.; Nelstrop, J.A.G. & Bush, A.J. 1999. Electrical conductivity and structure correlation in BIMNVOX. Solid State Ionics 119, 139–144.
Beg, S.; Hafiz, S. & Al–Areqi, N.A.S. 2011. Structural and electrical changes in BIMNVOX oxide– ion conductor. Def. Diff. Forum 316–317, 7–22.
Al–Areqi, N.A.S. & Beg, S. 2009. Phase transition changes in Bi4CexV2–xO11–(x/2)–δ system. Mater. Chem. Phys. 115, 5–8.
Shannon, R.D. & Prewitt, C.T. 1969. Effective ionic radii in oxides and fluorides. Acta Crystallogr. B 25, 925–946.
Pernot, E.; Anne, M.; Bacmann, M.; Strobe1, P.; Fouletier, J.; Vannier, R.N.; Mairesse, G.; Abraham, F. & Nowogrocki, G. 1994. Structure and conductivity of Cu and Ni–substituted Bi2V2O1 1 compounds. Solid State Ionics 70–71, 259–263.
Alga, M.; Ammar, A.; Essalim, R.; Tanouti, B.; Outzourhit, A.; Mauvy, F.& Decourt, R. 2005. Study on structural, thermal, sintering and conductivity of Cu–Co doubly substituted Bi4V¬2O11. Ionics 11, 81–86.
Watanabe, A. & Das, K. 2002. Time–dependent degradation due to the gradual phase change in BICUVOX and BICOVOX oxide–ion conductors at temperatures below about 500oC. J. Solid State Chem. 163, 224–230.
Wrobel, W.; Abrahams, I.; Krok, F.; Kozanecka, A.; Malys, M.; Bogusz, W. & Dygas, J.R. 2004. Phase stabilization and electrical characterisation in the pseudo–binary system Bi2ZrO5.–Bi2VO5.5–δ. Solid State Ionics 175, 425–429.
Abrahams, I. & Krok, F. 2002. Defect chemistry in the BIMEVOXes. J. Mater. Chem.12, 3351–3362.
Yang, X.; Ma, F. Li, K.; Guo, Y.; Hu, J. Li, W.; Huo, M. & Guo, Y. 2010. Mixed phase titania nanocomposite codoped with metallic silver and vanadium oxide: New efficient photocatalyst for dye degradation. J. Hazard. Mater. 175, 429–438
Im, J. S.; Bai, B. C.; In, S. J. & Lee, Y. S. 2010. Improved photodegradation properties and kinetic models of a solar–light–responsive photocatalyst when incorporated into electrospun hydrogel fibers. J. Colloid Interface Sci. 346, 216–221.
Pouretedal, H. R. & Keshavarz, M. H. 2010. Synthesis and characterization of Zn1–xCuxS and Zn1–xNixS nanoparticles and their applications as photocatalyst in Congo red degradation. J. Alloys Compds 501, 130–135.