The effect of (1,3-Dioxolan-2-ylmethyl)-triphenylphosphonium bromide (DTPB) on the zinc corrosion in 0.5 mol·L-1 citric acid solution was investigated at 30 oC using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. An ecofriendly bath was used for acid cleaning of zinc, which has not been widely used in literatures. The results showed that DTPB could serve as an effective inhibitor for the zinc corrosion in a citric acid solution with the inhibition efficiency of 98.9% at the DTPB concentration of 3×10-3 mol·L-1. A synergistic effect between DTPB and potassium iodide (KI) enhanced the inhibition capability of DTPB, and better inhibition efficiency was achieved as compared with that by using DTPB alone. The synergism parameter had a value of 1.2 and was found to decrease with temperature. An inhibition mechanism is proposed by which KI acts as an adsorption mediator for bonding metal surface and DTPB.

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zinc, polarization, EIS, acid corrosion, synergism

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[1] Hardesty F, Metals Handbook, Properties and Selection: Nonferrous Alloys and Pure Metals, vol 2, ninth ed., (ASM, USA, Elsevier B.V. 1981): 249.

[2] Hebing Z, Qiming H, Man L, et al. Investigation on synergism of composite additives for zinc corrosion inhibition in alkaline solution. Materials Chemistry and Physics, 2011, 128(1): 214-219.

[3] Liu S, Zhong Y, Jiang R, et al. Corrosion inhibition of zinc in tetra-n-butylammonium bromide aerated aqueous solution by benzotriazole and Na3PO4. Corrosion Science, 2011, 53(2): 746-759.

[4] Aramaki K. Synergistic inhibition of zinc corrosion in 0.5M NaCl by combination of cerium(III) chloride and sodium silicate. Corrosion Science, 2002, 44(4): 871-886.

[5] Georges C, Rocca E, Steinmetz P. Synergistic effect of tolutriazol and sodium carboxylates on zinc corrosion in atmospheric conditions. ElectrochimicaActa, 2008, 53(14): 4839-4845.

[6] Pruna A, Pilan L. Electrochemical study on new polymer composite for zinc corrosion protection. Composites Part B: Engineering, 2012, 43(8): 3251-3257.

[7] Qiu R, Zhang D, Wang P. Superhydrophobic-carbon fibre growth on a zinc surface for corrosion inhibition. Corrosion Science, 2013, 66(1): 350-359.

[8] Aghzzaf A A, Rhouta B, Rocca E, et al. Corrosion inhibition of zinc by calcium exchanged beidellite clay mineral: a new smart corrosion inhibitor. Corrosion Science, 2014, 80(1): 46-52.

[9] Muller B, Inblo G. Heterocycles as corrosion inhibitors for zinc pigments in aqueous alkaline media. Corrosion Science, 1996, 38(2): 293-300.

[10] Foad El-Sherbini E E, Abdel Wahaab S M, Deyab M. Ethoxylated fatty acids as inhibitors for the corrosion of zinc in acid media. Materials Chemistry and Physics, 2005, 89(2): 183-191.

[11] Basio F, Poarson R G. Mechanism of Inorganic Reaction, second ed., John Wiley, London, 1967.

[12] Abdallah M. Ethoxylated fatty alcohols as corrosion inhibitors for dissolution of zinc in hydrochloric acid. Corrosion Science, 2003, 45(12): 2705-2716.

[13] Abdel Aal M S, Ahmed Z A, Hassan M S. Inhibiting and accelerating effects of some quinolines on the corrosion of zinc and some binary zinc alloys in HCl solution. Journal of Applied Electrochemistry, 1992, 22(11): 1104-1109.

[14] Talati J D, Desai M N, Shah N K. Meta-substituted aniline-N-salicylidenes as corrosion inhibitors of zinc in sulphuric acid. Materials Chemistry and Physics, 2005, 93(1): 54-64.

[15] Agrawal Y K, Talati J D, Shah M D, et al. Schiff bases of ethylenediamine as corrosion inhibitors of zinc in sulphuric acid. Corrosion Science, 2004, 46(3): 633-651.

[16] Mihit M, Laarej K, Abou El Makarim H et al. .Study of the inhibition of the corrosion of copper and zinc in HNO3 solution by electrochemical technique and quantum chemical calculations. Arabian Journal of Chemistry, 2010, 3(1): 55-60.

[17] Wang L, Pu J X, Luo H C. Corrosion inhibition of zinc in phosphoric acid solution by 2-mercaptobenzimidazole. Corrosion Science, 2003, 45(4): 677-683.

[18] Morad M S. Inhibition of phosphoric acid corrosion of zinc by organic onium compounds and their adsorption characteristics. Journal of Applied Electrochemistry, 1999, 29(5): 619-626.

[19] Rudresh H B, Mayanna S M. Role of the thiocyanate ion in the corrosion inhibition of zinc in perchloric acid by n-decylamine. Surface Technology, 1979, 8(3): 185-194.

[20] Shanming H, Wang J, Yan J. Pressure leaching of synthetic zinc silicate in sulfuric acid medium. Hydrometallurgy, 2011, 108(3-4): 171-176.

[21] El HosaryAA, Saleh R M, Shams El Din A M. Corrosion inhibition by naturally occurring substances. Corrosion Science, 1972, 12(12): 897-904.

[22] Abiola O K, James A O. The effects of Aloe vera extract on corrosion and kinetics of corrosion process of zinc in HCl solution. Corrosion Science, 2010, 52(2): 661-664.

[23] Hosseini M, Mertens S F L, Arshadi M R. Synergism and antagonismin of mild steel corrosion inhibition by sodium dodecyl benzene sulphonate and hexamethylenetetramine. Corrosion Science, 2003, 45(7): 1473-1489.

[24] Li X M, Tang L B, Li L et al. Synergistic inhibition between o-phenanthroline and chloride ion for steel corrosion in sulphuric acid. Corrosion Science, 2006, 48(2): 308-321.

[25] Xianghong L, Shuduan D, Hui F. Synergistic inhibition effect of red tetrazolium and uracil on the corrosion of cold rolled steel in H3PO4 solution: weight loss, electrochemical, and AFM approaches. Materials Chemistry and Physics, 2009, 115(2-3): 815-824.

[26] Solmaz R, ?ahin E A, Döner A et al. The investigation of synergistic inhibition effect of rhodamine and iodide ion on the corrosion of copper in sulphuric acid solution. Corrosion Science, 2011, 53(10): 3231-3240.

[27] Heydari M, Javidi M. Corrosion inhibition and adsorption behaviour of an amido-imidazolinederivative on API 5L X52 steel in CO2-saturated solution and synergistic effect of iodide ions. Corrosion Science, 2012, 61(1): 148-155.

[28] Godec R F, Pavlovi? M G. Synergistic effect between non-ionic surfactant and halide ions in the forms of inorganic or organic salts for the corrosion inhibition of stainless-steel X4Cr13 in sulphuric acid. Corrosion Science, 2012, 58(1): 192-201.

[29] Khamis A, Saleh M M, Awad M I. Synergistic inhibitor effect of cetylpyridinium chloride and other halides on the corrosion of mild steel in 0.5 M H2SO4. Corrosion Science, 2013, 66(1): 343-349.

[30] Gunasekaran G, Palanisamy N, AppaRaob B V et al. Synergistic inhibition in low chloride media. ElectrochimicaActa, 1997, 42(9): 1427-1434.

[31] Rudresh H B, Mayanna S M. The synergistic effect of Halide ions on the corrosion inhibition of zinc by n-decylamine.Corrosion Science, 1979, 19(6): 361-370.

[32] Saeki I, Seguchi T, Kourakat Y et al. Ni electroplating on AZ91D Mg alloy using alkaline citric acid bath. ElectrochimicaActa, 2013, 114(1): 827-831.

[33] Bastidas J M, Scantlebury J D. The influence of light on corrosion phenomena: The behaviour of mild steel in citric acid solution. Corrosion Science, 1986, 26(5): 341-347.

[34] Abdel Rehim S S, Sayyah S M, El Deeb M M. Corrosion of tin in citric acid solution and the effect of some inorganic anions. Materials Chemistry and Physics, 2003, 80(3): 696-703.

[35] Jafrian M, Gobal F, Danaai I et al. Electrochemical studies of the pitting corrosion of tin in citric acid solution containing chloride. ElectrochimicaActa, 2008, 53(13): 4528-4536.

[36] Zerfaoui M, Oudda H, Hammouti B et al. Inhibition of corrosion of iron in citric acid media by aminoacids. Progress in Organic Coatings, 2004, 51(2): 134-138.

[37] El-Gaber A S, Fouda A S, El Desoky A M. Synergistic inhibition of zinc corrosion by some anions in aqueous media. Ciência&Tecnologia dos Materiais, 2008, 20(3-4): 71-77.

[38] Xianghong L, Shuduan D, Xiaoguang X H F. Inhibition effect of bamboo leaves extract on steel and zinc in citric acid solution. Corrosion Science, 2014, 87(1): 15-26.

[39] Larba R, Boukerche I, Alane N, et al. Citric acid as an alternative lixiviant for zinc oxide dissolution. Hydrometallurgy, 2013, 134-135: 117-123.

[40] Cresp T M, Sargent M V, Vogel P J C S, Perkin trans I, 1974, 37 .

[41] http://www.expotechusa.com/MSDS_fil%5Csigma%5C223859.pdf

[42] datasheets.scbt.com/sc-222985.pdf

[43] Tavakoli H, Shahrabi T, Hosseini M G. Synergistic effect on corrosion inhibition of copper by sodium dodecylbenzenesulphonate (SDBS) and 2-mercaptobenzoxazole. Materials Chemistry and Physics,2008, 109(2-3): 281-286.

[44] Abdel-Gaber A M, Abd-El-Nabey B A, Sidahmed I M et al. Kinetics and thermodynamics of aluminium dissolution in 1.0M sulphuric acid containing chloride ions. Materials Chemistry and Physics, 2006, 98(2-3): 291-297.

[45] Benabdellah M, Touzani R, Dafali A, et al. Rutheniumligand complex, an efficient inhibitor of steel corrosion in H3PO4 media. Materials Letters, 2007, 61(4-5): 1197-1204.

[46] Ghanbari A, Attar M M, Mahdavian M. Corrosion inhibition performance of three imidazole derivatives on mild steel in 1M phosphoric acid. Materials Chemistry and Physics,2010, 124(2-3): 1205-1209.

[47] Tuken T, Demir F, Kicir N et al. Inhibition effect of 1-ethyl-3methylimidazolium dicyanamide against steel corrosion. Corrosion Science, 2012, 59(1): 110-118.

[48] Langmuir I. The constitution and fundamental properties of solids and liquids. Journal of the American Chemical Society, 1916, 38(11): 2221-2295.

[49] Florry P J. Thermodynamics of high polymer solutions. Journal of Chemical Physics, 1942, 10(1): 51-61.

[50] El-AwadyAA, Abd-El-Nabey B A, Aziz S G. Kinetic-thermodynamic and adsorption isotherms analyses for the inhibition of the acid corrosion of steel by cyclic and open-chain amines. Journal of Electrochemical Society, 1992, 139(8): 2149-2154.

[51] Lyberatos G, Kobotiatis L. Inhibition of aluminum 7075 alloy corrosion by the concerted action of nitrate and oxalate salts. Corrosion Science, 1991, 47(11): 820-824.
[52] Umoren S A. Synergistic influence of gum arabic and iodide ion on the corrosion inhibition of aluminium in alkaline medium. PortugaliaeElectrochimicaActa, 2009, 27(5): 565-577.

[53] Oguzie E E, Unaegbu C, Ogukwe C N et al. Inhibition of mild steel corrosion in sulphuric acid using indigo dye and synergistic halide additives. Materials Chemistry and Physics, 2004, 84(2-3): 363-368.

[54] Fishtik I F, Vataman I I, Spatar F A. The mechanism of ion-pair formation in the inner part of the double layer. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984, 165(1-2): 1-8.



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