Doping engineering of V-TiO2 for its use as corrosion inhibitor

Bhuvaneshwari, B.; Vivekananthan, S.; Sathiyan, Govindasamy; Palani, G. S.; Iyer, Nagesh R.; Prabhat, K.; Mondal, K.; Gupta, Raju Kumar

doi:10.1016/j.jallcom.2019.152545

Cited by 13 publications

(16 citation statements)

References 110 publications

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“…Thus the strong interaction between V and Ti is confirmed. [21] B. Bhuvaneshwari et al [21] evoked in the case of the V-TiO 2 materials that the enlargement of the FTIR peaks after V-doping confirms the existence of the TiÀ OÀ V and VÀ O bonds and conclude the strong interaction between V and Ti is confirmed.…”

Section: Physicochemical Characterizationmentioning

confidence: 95%

“…In general, highly acidic aqueous solutions (as HCl) are largely used in the chemical intermediates and in petroleum production, food processing, pickling, metal cleaning and others. [21,[26][27][28][29][30] Because acids are aggressive media, studying the corrosion resistance of metallic materials is of importance. However, most of the inhibitor was adsorbed on mild steel helps in retarding the transfer or participation of oxygen from the bulk solution to the interface of mild steel and the solution.…”

Section: Mechanism Of the Inhibitionmentioning

confidence: 99%

“…[15][16][17][18][19] Furthermore, vanadium species (oxides and vanadates) have been reported as promising inhibitors. [20][21][22][23] Vanadium materials find their application as a novel inhibitor for corrosion resistance. However, only very few reports are available for vanadiumbased coatings on mild steels.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Ameur

Brahimi²,

Bensaada³

et al. 2020

ChemistrySelect

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The present work aims to study the anticorrosion and the photodegradation properties of titanate nanotubes (TiNTs) and vanadium doped-titanate nanotubes (V-TiNTs). Moreover, this article seeks to investigate the effect of doping TiNTs by vanadium species at different amount (2, 5 and 10 wt %). The raw materials (i.e:TiO 2 and V 2 O 5-TiO 2) are obtained by a sol gel process, while the hydrothermal treatment is chosen to achieve the hollow structure. The structural evolutions and morphological characteristics of materials have performed using various techniques such as: Scanning Electron Microscopy and Energy Dispersive X-ray (MEB/EDS), X-ray diffraction (XRD), UV-Visible in Reflection Diffuse spectroscopy (RD/UV-Vis) and Fourier Transform InfraRed spectroscopy (FTIR) analysis. However , the anticorrosion properties of the synthesized nanotubes are evaluated on mild steel corrosion in 1 N HCl using a weight loss method. All materials showed a potential inhibitor effect (up to 90 %) depending on the vanadium percentage and the inhibitor concentration. The photodegradation activity of the prepared materials is evaluated in the photodegradation of two organic pollutants: Methylene Blue (MB) and Malachite Green (MG) under UV-Visible irradiation. The obtained results underlined the improvement of photocatalytic activity of TiNTs by vanadium species. A conversion rate up to 96 % is achieved at reduced time. Therefore, the prepared materials could be suitable for the anticorrosion of mild steel and the photodegradation of organic pollutants.

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Section: Physicochemical Characterizationmentioning

confidence: 95%

Section: Mechanism Of the Inhibitionmentioning

confidence: 99%

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Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Ameur

Brahimi²,

Bensaada³

et al. 2020

ChemistrySelect

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“…The positive values of ∆H* reflects the endothermic nature of the X80 steel dissolution process. These findings revealed that the T. peruviana extracts are highly efficiency for the inhibition of corrosion and could be potential for inhibition of steel corrosion in acidic environment, which is a problematic issue (Alamri and Obot, 2019;Ayukayeva et al, 2019;Bhuvaneshwari et al, 2019;Chauhan et al, 2019;Obot et al, 2019;Pakiet et al, 2019;Qian and Cheng, 2019;Zhang et al, 2019).…”

Section: Rtmentioning

confidence: 88%

Corrosion inhibition of API 5L X80 pipeline steel in acidic environment using aqueous extract of Thevetia peruviana

Int¹

2019

Preprint

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Aqueous extract of Thevetia peruviana leaves were investigated as corrosion inhibitor for API 5L X80 pipeline steel in 1M H2SO4 solution using electrochemical and gravimetric techniques. The results reveal that T. peruviana inhibited the X80 pipeline steel corrosion in the acid medium in a concentration dependent manner. Potentiodynamic polarization results showed T. peruviana to be a mixed type inhibitor in 1M H2SO4 environment, whereas the impedance results revealed adsorption of the inhibitor species on the steel surface. The gravimetric results reveal that the adsorption mechanism of the inhibitor on the steel surface was chemisorption. The adsorption was in accordance with Freundlich adsorption isotherm and negative standard adsorption energy (Δ𝐺o𝑎𝑑𝑠) obtained inferred that the adsorption was spontaneous and the interaction between the inhibitive molecules was found to be repulsive. Scanning electron microscopy (SEM) confirmed the formation of adsorbed film on the X80 pipeline steel surface. Results revealed that T. peruviana has potential to inhibit the correction and could possibly be used for corrosion inhibition in the acidic environment of steel.

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“…The electrochemical parameters were obtained from Tafel curves by Tafel extrapolation method. And the percentage inhibition efficiency (IE Pol ) was calculated using the corrosion current densities according to the following Equation (1) [32,33] :…”

Section: Characterizationmentioning

confidence: 99%

Incorporation of silica network and modified graphene oxide into epoxy resin for improving thermal and anticorrosion properties

Xie

Liang

Yang

et al. 2020

J of Applied Polymer Sci

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In this study, the silica network and functionalized graphene oxide (GO) were incorporated into the epoxy coating systems, which was aimed to improve the thermal property and corrosion resistance of epoxy coatings. First, tetraethyl orthosilicate (TEOS) oligomers and epoxy hybrid was fabricated through sol–gel method. Then the (3‐aminopropyl) triethoxysilane (APTES) modified graphene oxide (FGO) was added into the epoxy hybrid composite to obtain anticorrosion coatings. Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), Raman spectrum, and X‐ray photoelectron spectrum were conducted to evaluate the structural information of GO and APTES modified GO nanosheets. The results indicated that the APTES successfully grafted onto the surface of GO sheets. Besides, TGA curves, electrochemical measurements and salt spray test were also carried out to characterize the thermal performance and corrosion resistance of GO based epoxy coatings. The TGA results revealed that the thermal performance of epoxy coating containing silica network and FGO nanofiller (ES/FGO) was significantly strengthened compared to pure epoxy. The initial degradation temperature of epoxy coating was increased from 300 to 343.7°C after incorporation of silica component and FGO. The EIS measurements demonstrated that the impedance modulus of ES/FGO was significantly higher than neat epoxy, which indicated that the corrosion resistance of epoxy was substantially strengthened after introduction of silica component and FGO. The corrosion rate and inhibition efficiency of epoxy composite coatings were also shifted from 1.237 × 10−7 mm/year and 76.6% (for neat epoxy) to 1.870 × 10−9 mm/year and 99.6% (for ES/FGO), respectively. The salt spray test also revealed that the silica and FGO can improve the corrosion resistance of epoxy coating. Additionally, the dispersion of GO sheets was also enhanced after the modification of APTES siloxane.

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Doping engineering of V-TiO2 for its use as corrosion inhibitor

Cited by 13 publications

References 110 publications

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs)

Corrosion inhibition of API 5L X80 pipeline steel in acidic environment using aqueous extract of Thevetia peruviana

Incorporation of silica network and modified graphene oxide into epoxy resin for improving thermal and anticorrosion properties

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