Surface Characterization Studies Research Articles

Li7P2S8Br0.5I0.5 (LPSBI) solid state electrolyte by XPS

There have been increasing surface characterization studies of battery materials specifically in the context of before and after cell operation to determine any chemical changes. Therefore, providing reliable reference spectra of battery-related materials is important. In this paper, survey and high-energy resolution data are reported for the solid-state electrolyte Li7P2S8Br0.5I0.5, which has been synthesized and characterized at Pacific Northwest National Laboratory. The current data present narrow-scan regions of I 3d, I 4d, Br 3d, O 1s, P 2p, S 2p, and C 1s core-level spectra, as well as wide-scan survey data that were obtained using the Al Kα x-ray source with a Thermo Fisher Nexsa instrument.

Surface characterisation reveals substrate suitability for cyanobacterial phototaxis

Cyanobacteria respond to light stimulation, activating localised assembly of type IV pili for motility. The resulting phototactic response is highly dependent on the nature of the incoming light stimulus, and the final motility parameters depend on the surface properties. Conventionally, phototaxis studies are carried out on hydrogel surfaces, such as agarose, with surface properties that vary in time due to experimental conditions. This study considers five substrates, widely utilized in microfluidic technology, to identify the most suitable alternative for performing reliable and repeatable phototaxis assays. The surfaces are characterised via a contact angle goniometer to determine the surface energy, white light interferometry for roughness, zeta-potentials and AFM force distance curves for charge patterns, and XPS for surface composition. Cell motility assays showed 1.25 times increment on surfaces with a water contact angle of 80° compared to a reference glass surface. To prove that motility can be enhanced, polydimethylsiloxane (PDMS) surfaces were plasma treated to alter their surface wettability. The motility on the plasma-treated PDMS showed similar performance as for glass surfaces. In contrast, untreated PDMS surfaces displayed close to zero motility. We also describe the force interactions of cells with the test surfaces using DLVO (Derjaguin-Landau-Verwey-Overbeek) and XDLVO (extended DLVO) theories. The computed DLVO/XDLVO force-distance curves are compared with those obtained using atomic force microscopy. Our findings show that twitching motility on tested surfaces can be described mainly from adhesive forces and hydrophobicity/hydrophilicity surface properties. Statement of significanceThe current article focuses on unravelling the potential Micro-Electro-Mechanical System (MEMS) compatible surfaces for studying phototactic twitching motility of cyanobacteria. This is the first exhaustive surface characterization study coupled with phototaxis experiments, to understand the forces contributing to twitching motility. The methods shown in this paper can be further extended to study other surfaces and also to other bacteria exhibiting twitching motility.

Suppressing Interfacial Degradation of Li7La3Zr2O12 Solid Electrolytes in H2O/CO2 via Polymer Encapsulation

Solid-state batteries with nonflammable inorganic solid electrolytes provide a fundamental solution for resolving safety concerns. Li7La3Zr2O12 (LLZO) has been considered as a promising candidate for solid electrolytes, due to its high Li+ conductivity and chemical/electrochemical compatibility with Li metal. However, LLZO electrolytes are known to react with H2O and CO2 to form lithium carbonates (Li2CO3) on the surface when exposed to the ambient air, resulting in the significant degradation in Li+-conduction properties. Herein, we propose an effective approach for improving the air-stability of LLZO via hydrophobic polymer encapsulation. For encapsulation of LLZO powders, polyurethane-based polymers are designed and synthesized to have high hydrophobicity and ionic conductivity by engineering soft segment and hydrophobic chain extender. Bare LLZO and polymer-encapsulated LLZO (P-LLZO) powders are subjected to accelerated durability tests (ADTs) in which the concentrations of O2, H2O, and CO2 are precisely controlled to promote the interfacial reactions. Surface characterization studies reveal that the polymer encapsulation of LLZO effectively mitigates the interfacial degradation (Li2CO3 formation) by preventing the direct contact between LLZO and H2O/CO2. Furthermore, a biphasic solid electrolyte (BSE) fabricated using ADT-tested P-LLZO powders exhibits higher ionic conductivity as compared with that of BSE with ADT-tested LLZO, proving the efficacy of the polymer encapsulation. The findings of this study would be essential in understanding the role of interfacial engineering in mitigating the degradation of Li+-conduction properties and developing highly conductive and stable LLZO solid electrolytes.

Combined spectroscopy and electrical characterization of La:BaSnO3 thin films and heterostructures

For La-doped BaSnO3 thin films grown by pulsed laser deposition, we combine chemical surface characterization and electronic transport studies to probe the evolution of electronic states in the band structure for different La-doping contents. Systematic analyses of spectroscopic data based on fitting the core electron line shapes help to unravel the composition of the surface as well as the dynamics associated with increasing doping. These dynamics are observed with a more pronounced signature in the Sn 3d core level, which exhibits an increasing asymmetry to the high binding energy side of the peak with increasing electron density. The present results expand the current understanding of the interplay between the doping concentration, electronic band structure, and transport properties of epitaxial La:BaSnO3 films.

Effect of Schiff's bases on corrosion protection of mild steel in hydrochloric acid medium: Electrochemical, quantum chemical and surface characterization studies

Schiff's bases such as (E)-3-(3-hydroxybenzylideneamino)-2-(3-hydroxyphenyl)-2,3-dihydroquinazolin-4(1H)-one (SB-1) and (E)-3-(5‑bromo-2-hydroxybenzylideneamino)-2-(5‑bromo-2-hydroxyphenyl)-2,3-dihydraquinazolin-4(1H)-one (SB-2) were synthesized and investigated to the surface interactions & corrosion protection performance on mild steel (MS) in 2 M HCl medium by means of weight loss, electrochemical polarization and electrochemical impedance spectroscopic (EIS) techniques. Tafel polarization measurements showed that, the synthesized compounds were exhibited as mixed type (cathodic / anodic) inhibitors and the maximum protection efficiencies of 86.44% and 87.36% for SB-1 and SB-2 respectively were observed at optimized concentration. The corrosion control of MS in presence of inhibitors could evaluate through adsorption phenomenon and fitted to Langmuir's adsorption isotherm. Activation energy (Ea) values in absence of the inhibitor is minimum 51.45 kJ mol−1 and higher values of 89.98 kJ mol−1 and 70.09 kJ mol−1 in the presence of SB-1 and SB-2 respectively. Thermodynamic adsorption parameters such as ∆Hads, ∆Gads & ∆Sads were correlated to the corrosion inhibition process. Quantum chemical analysis revealed the nature of chemical interaction established between the inhibitor molecules and metal atoms. The change in surface morphology of mild steel and chemical interactions of inhibitor molecules on specimen surface were evaluated through FT-IR, Scanning electron microscopic linked with EDX, Atomic force spectroscopy and Contact angle techniques. Atomic force microscopic results revealed that, an average roughness of the mild steel surface has been reduced from 443 nm to 11.0 nm and 26.9 nm in presence SB-1 and SB-2 respectively.

A detailed surface characterization study of SBA-15 and B-SBA-15-x mesoporous materials using the IGC technique

Pure and boron-containing B-SBA-15-x (molar ratio, Si/B = 50, 30, 10) mesoporous materials were synthesized by a direct hydrothermal procedure. Samples were characterized by XRD, ICP-OES, FT-IR, BET and SEM. Inverse gas chromatography (IGC) technique was used to determine the dispersive surface energies (γSd), adsorption thermodynamic parameters (ΔH, ΔG, ΔS) and the acid-base constants (KA and KD) of the samples. IGC experiments were performed at infinite dilution region at 200, 210, 220 and 230 °C. The surface characterization results confirmed that the SBA-15 structure was formed, boron was added to the structure and all samples have meso pores. The surface area of the pure SBA-15 was determined as 745.288 m2/g and it was found that the surface area decreases with increasing boron content. Physical adsorption occurred between the IGC probe molecules and all SBA-15 materials according to the adsorption thermodynamic parameters. (γSd) values of pure SBA-15, B-SBA-15-50, B-SBA-15-30 and B-SBA-15-10 were found at 40.873, 37.039, 36.636 and 37.444 mJ/m2 at 200 °C, respectively. It has been observed that the dispersive surface energy of all samples decreases with increasing temperature. According to the SC value calculated from the KA and KD parameters, the surface of B-SBA-15-10 with the highest boron content was found to be acidic. On the other hand the surfaces of all other samples were determined as basic.

A comparative study of surface characterization and corrosion behavior of micro-arc oxidation treated Ti–6Al–4V alloy prepared by SEBM and SLM

A comparative study of surface characterization and corrosion behavior of micro-arc oxidation treated Ti–6Al–4V alloy prepared by SEBM and SLM

Non linear regression analysis and RSM modeling for removal of Cr (VI) from aqueous solution using PANI@WH composites

An aquatic plant, water hyacinth was used after modification with poly-aniline (PANI@WH) as an adsorbent for removal of Cr (VI) from aqueous solution. The effect of pH, time, dose and concentration on Cr (VI) removal was investigated following batch adsorption process. The adsorption of Cr (VI) on PANI@WH adsorbent followed Freundlich adsorption isotherm as well as pseudo-second-order kinetic model. Maximum adsorption capacity obtained by isotherm has been achieved as 31.45 mgg−1 at 323K. Adsorption of Cr (VI) proceeds through film diffusion rather than intra-particle diffusion. Thermodynamic studies suggested endothermic and spontaneous nature of adsorption due to positive enthalpy and negative Gibbs free energy values. On the basis of the value of mean free energy, Gibb's free energy of adsorption and activation energy obtained in the present investigation suggested that adsorption of Cr (VI) on polyaniline coated water hyacinth occurs through physical adsorption. Surface characterization studies such as Field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared, Brunauer, Emmett and Teller surface area, X-ray photoelectron spectroscopy, X-ray diffractometer, atomic force microscopy and high resolution transmission electron microscopy illustrated adsorption mechanism of the adsorbent. The predicted % removal of Cr (VI) was obtain by response surface methodology model are compared with the experimental % removal of Cr (VI) obtained by batch adsorption process. Prepared composite adsorbent can be reused for several cycles and it gives 85% Cr (VI) removal efficiency even after 4th cycle which shows its good regeneration ability.

Combined influence of Ce(III) and iodide ions for corrosion protection of AA 2024-T3 in acidic to neutral chloride-rich environments: Electrochemical and surface characterization studies

It has been reported that trivalent cerium salts are effective inhibitors for corrosion of AA2024-T3 in neutral to alkaline corrosive environments, but poor in acidic environments. In this study, work was done for extending corrosion resistance provided by Ce(NO3)3 to acidic pHs as low as 2.5 through the addition of iodide ions. To this end, potentiodynamic polarization was used to ascertain the optimum Ce(III) concentration for the inhibition of AA2024-T3 corrosion in 3.5%NaCl solution. This optimum concentration is found to be in a range between 0.1 and 0.3 mmol/L Ce(III). This optimum concentration also gives a maximum width of the passive region under the pitting potential (Epit). Based on this optimization, further work was performed as a function of pH without and in the presence of 0.01 mol/L KI at five pH values (2.5, 4, 5, 7, and 8). Without iodide the best inhibition provided by the Ce(III) cation is at pH = 7 but active corrosion is observed at pH = 2.5 with an estimated inhibitor efficiency (−37.6%). The addition of iodide ions (I–) reverses the poor corrosion resistance whereby the inhibitor efficiency becomes 47.7%. Moreover, at pH = 4 the efficiency is also increased from 54.0% to 81.0% with iodide addition providing a significant improvement over Ce(III) cations alone under acidic conditions. There is a synergistic effect between I– anion and Ce(III) cation, which is determined to be 2.4 and 2.1 at pH = 2.5 and 4.0, respectively. At pH=5 and 7 there is virtually no change in inhibition but at pH = 8 the inhibition falls away due to a considerable amount of cerium precipitating out of solution as cerium carbonate. The protective film formed on sites in the aluminium alloy surface at different pH values was examined by both scanning electron microscopy with energy dispersive X-ray analysis and X-ray photoelectron spectroscopy to determine the role of these ions as a function of pH in surface inhibition. It is proposed that at pH = 2.5 protection is provided by a bilayer adsorption of iodide with “capping” cerium ions, but at pH = 4 protection occurs through precipitate formation on active cathodes thereby shutting down the oxygen reduction reaction.

Poly(vinyl alcohol)/Plant Extracts Films: Preparation, Surface Characterization and Antibacterial Studies against Gram Positive and Gram Negative Bacteria.

In this study, we aim to obtain biomaterials with antibacterial properties by combining poly(vinyl alcohol) with the extracts obtained from various selected plants from Romania. Natural herbal extracts of freshly picked flowers of the lavender plant (Lavandula angustifolia) and leaves of the peppermint plant (Mentha piperita), hemp plant (Cannabis sativa L.), verbena plant (Verbena officinalis) and sage plant (Salvia officinalis folium) were selected after an intensive analyzing of diverse medicinal plants often used as antibacterial and healing agents from the country flora. The plant extracts were characterized by different methods such as totals of phenols and flavonoids content and UV-is spectroscopy. The highest amounts of the total phenolic and flavonoid contents, respectively, were recorded for Salvia officinalis. Moreover, the obtained films of poly(vinyl alcohol) (PVA) loaded with plant extracts were studied concerning the surface properties and their antibacterial or cytotoxicity activity. The Attenuated Total Reflection Fourier Transform Infrared analysis described the successfully incorporation of each plant extract in the poly(vinyl alcohol) matrix, while the profilometry demonstrated the enhanced surface properties. The results showed that the plant extracts conferred significant antibacterial effects to films toward Staphylococcus aureus and Escherichia coli and are not toxic against fibroblastic cells from the rabbit.

Synthesis of self-healing inhibitor releasing nanocapsules blended phenol novolac resin for high performance anticorrosion coating

The present work intended to synthesize a composite material exhibiting self-healing and enhanced anticorrosion properties. In this context, MWCNT incorporated nanocapsule (NC) filler material was synthesized, then it is blended with phenol novolac resin (PNR). The surface characterization studies of MWCNT/NC-PNR composite material signify the nano-size, spherical, and multiwalled structures of NC and CNT. The composite materials consisting of different weight percentages of MWCNT inserted NC were coated on the mild steel (MS) surface by the doctor blade method. The 0.3 wt% MWCNT/NC blended PNR showed significantly enhanced hydrophobicity of the coating which is evidenced by the high value of water contact angle (98.2°) amongst the coating materials prepared. Further, electrochemical impedance spectroscopy (EIS) tests of the coating confirm a high impedance value of 3.039× 107 ohm cm2 at the low frequency region for 50 days of immersion in 3.5 wt% NaCl solution. Thus, it was found that 0.3 wt% MWCNT incorporated NC filler increased the corrosion protection efficiency of NC/PNR coating by 32.61%. Therefore, the results show that the MWCNT/NC-PNR composite coating exhibits significantly elevated corrosion resistance, and can be used as a self-healing inhibitor coating material for long-term anti-corrosion shield.

Effect of Schiff's Bases on Corrosion Protection of Mild Steel in Hydrochloric Acid Medium: Electrochemical, Quantum Chemical and Surface Characterization Studies

Effect of Schiff's Bases on Corrosion Protection of Mild Steel in Hydrochloric Acid Medium: Electrochemical, Quantum Chemical and Surface Characterization Studies

Effect of Schiff's Bases on Corrosion Protection of Mild Steel in Hydrochloric Acid Medium: Electrochemical, Quantum Chemical and Surface Characterization Studies

Effect of Schiff's Bases on Corrosion Protection of Mild Steel in Hydrochloric Acid Medium: Electrochemical, Quantum Chemical and Surface Characterization Studies

Corrosion behaviour of new oxo-pyrimidine derivatives on mild steel in acidic media: Experimental, surface characterization, theoretical, and Monte Carlo studies

In this work, the effects of new compounds, namely, 1-amino-5-(4-methylbenzoyl)-4-(4-methylphenyl) pyrimidin-2 (1H)-thione (AMMP), and 1-(5-(4-Methoxybenzoyl)-4-(4-methoxyphenyl) 2-oxopyrimidin-1 (2H)-yl)-3-phenylthiourea (MMOPH) has been successfully investigated as a corrosion inhibitor for mild steel in a 1 M HCl solution. This investigation has been done by electrochemical techniques (potentiodynamic polarization, and electrochemical impedance spectroscopy), surface characterization (scanning electron microscopy with energy dispersive x-ray spectroscopy, and atomic force microscopy), and theoretical calculations (density function theory and Monte Carlo simulation). The electrochemical results showed that both compounds act as mixed-type inhibitors. However, MMOPH is more efficient than AMMP (95.9% compared with 84.1% at 5 × 10−4 M and an immersion time of 1 h). Additionally, the effect of immersion time on inhibitor efficiency was studied. The current density was reduced with the presence of inhibitors from 517.93 to 56.18 and 9.96 μA.cm−2 at 5 × 10−4 M and an immersion time of 1 h for AMMP and MMOPH, respectively. In both substances, the Langmuir isotherm system showed the best fit, with physisorption and chemisorption being the types of adsorption. The results of surface characterization indicated that both compounds can be adsorbed on mild steel surfaces to minimize corrosion. The obtained Monte Carlo simulation results suggest that the inhibitors are adsorbed vertically and the formation of a protective layer on the metal surface. The density function theory calculations for inhibitors found the protonated state is more reactive than the neutral state and agree with experimental results and follow the order MMOPH ˃ AMMP. The results showed that both compounds can be used as new corrosion inhibitors for mild steel in aggressive environments.

Biosorption of Cu(II), Pb(II) from electroplating industry effluents by treated shrimp shell

The current investigation focuses on a systematic study of application of treated shrimp shell waste (TSSW) as a potential biosorbent in removal of Cu(II) and Pb(II) from hazardous industrial effluents. The surface characterization and morphological studies indicated that biosorption is owing to ion complexation and exchange, and chemical adsorption mechanism. The effects of pH (1–10), time dependency (1–60 min), initial concentration of Cu(II) and Pb(II) (20–100 mg L−1), TSSW loading (0.1–0.5 g) and temperature (303–333 K) on biosorption efficiency using TSSW were examined through experiments. The experimental discoveries indicated that maximum biosorption efficacies were 96.42% at pH 5, 40 min for Cu (II) and 89.77% at pH 6, 30 min for Pb(II), 20 mg L−1 concentration, 0.1 g loading and 303 K temperature. Langmuir, Freundlich, Temkin, and Dubinin - Radushkevich isotherm models were used to examine experimental findings and the Langmuir model was well fitted one. The maximum Cu(II), Pb(II) removal capacities by TSSW were 22.67, 15.32 mg g−1 according to Langmuir model. Pseudo second order model was excellent suited to kinetics which shows that chemisorption was involved for the transfer of Cu(II), Pb(II) to TSSW surface with three different intra particle diffusional stages. Hence, this study revealed that TSSW has a great potential to be an environment friendly and economic biosorbent for removal of Cu(II) and Pb(II) containing industrial effluent.

Novel cost-effective aqueous Amorphophallus paeoniifolius leaves extract as a green corrosion inhibitor for mild steel corrosion in hydrochloric acid medium: A detailed experimental and surface characterization studies

Corrosion resistance property of eco-friendly Amorphophallus paeoniifolius leaves (APL) extract on mild steel surface in 1 M hydrochloric acid solution was studied by chemical, electrochemical and surface characterization methods. The functional groups and compositions of pure APL extract and corrosion product were investigated by FT-IR and UV–visible spectroscopy. Experimental methods proved the extent of metal surface deterioration in acidic medium was diminished as the APL extract concentrations increased. Corrosion inhibition mechanism is suggested to be a mixed type based on results obtained by polarization measurements. The data obtained by electrochemical impedance spectroscopic method indicates the development of protective film around the metal surface. Surface morphological studies such as FESEM, contact angle measurements and AFM studies performed on mild steel surfaces further confirm the protective ability of the inhibitor towards corrosion. It was well supported by EDAX studies indicating restricted anodic dissolution reaction in the presence of inhibitor. Adsorption isotherms showed a good fit to Langmuir isotherm and the data obtained indicates the spontaneous adsorption with the majority being physisorption. Thermodynamic and activation parameters showed the efficacy of inhibitor in controlling the corrosion and the efficiency of corrosion inhibition was found to be inversely proportional to the solution temperature. Percentage corrosion inhibition efficiency (92.49) obtained by electrochemical impedance spectroscopy on mild steel for 10% v/v concentration of APL extract was in good agreement with other experimental methods.

Functionally graded coating (silver/yttria) multi layers by pulsed laser deposition technique on 316L stainless steel substrate

Biomaterial surface modifications are crucial for matching the dynamics of the biological system and improving bioimplant efficiency. Surface modifications that are tailored to the material’s biocompatibility, bondability, and host cell associations can significantly improve the material’s biocompatibility, bondability, and host cell associations. In this investigation, silver, yttria and silver/yttria thin covers preparation and antimicrobial characteristics on St.St. 316L by pulsed laser deposition (PLD). The mechanical property of the coating has been evaluated by Vickers micro-hardness test, surface characterization studies of the coatings such as LOM and an antibacterial test has been conducted to ensure the coating’s antibacterial efficacy.

Experimental Investigation on the Change in Flow Boiling Characteristics Due to Boiling-Induced Copper Ageing

Abstract Heat sinks and heat exchangers based on flow boiling in mini/microchannels are expected to be more compact and efficient. One of the major challenges while using copper material for phase-change heat transfer application is the change in surface characteristics after prolonged usage due to the thermal oxidation of surface over time. This study involves the repeated experimental runs of flow boiling of water in a 1 mm hydraulic diameter end-milled copper channel to verify the influence of ageing on the thermal and hydraulic performance. As it is difficult to measure the surface wettability in a mini/microchannel, this work makes use of the ageing and surface characterization study conducted on the dummy copper samples to infer the influence of ageing on mini/microchannel surface characteristics and consequently its boiling performance. The test involves measuring over a period of time the wetting behaviors of the end-milled copper samples left in water at three different conditions: one in a constant temperature bath maintained at 60 °C and 1 atm and the remaining two in a pool of boiling water at 110 °C and 120 °C. The study compares the fresh sample and the aged sample for the surface oxidation, surface chemical composition and surface morphology, and discusses the changes in the contact angle and surface morphology caused by copper ageing.

Electrochemical approach for the aptamer-like conformational changes of α-synuclein peptides in the presence of copper(II)

The structure and aggregation states of alpha-synuclein (α-syn) have been shown to have a connection to the pathological development of Parkinson's disease (PD). Computational modeling studies have indicated that α-syn proteins misfold in the presence of biometals such as copper, iron and zinc, resulting in down-stream off-pathway oligomerization. If the early folding processes can be prevented, subsequent neurotoxicity due to the production of reactive oxygen species induced by the formation of α-syn-Cu(II) complexes can be suppressed. However, experimental data are lacking to support this hypothesis and many traditional approaches lack speed and sample volume efficiency. Through the application of an aptamer-like folding/unfolding strategy on an electrochemical platform, these challenges can be resolved. By exploiting the effect of spatial distance between the redox probe and electrode surface, a biosensor capable of monitoring the structural changes of α-syn peptides was constructed. Ferrocene-conjugated α-syn peptides (Fc-PEP) were immobilized on gold surfaces via gold-sulfur bond. Square-wave voltammetry (SWV) was used to monitor the Fc oxidation signal in the presence and absence of Cu(II). Full surface characterization studies were performed using X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The results showed that Fc-PEPs folded in the presence of Cu(II), and this behaviour could be reversed with the addition of EDTA. The biosensor was able to demonstrate distinguishable current responses between the effects of Cu(II) and Zn(II) on the folding of Fc-PEPs. Finally, in the presence of a well-described antioxidant and amyloid inhibitor, pyrroloquinoline quinone (PQQ), the current responses remained the same, indicating the strong interaction between PQQ and Fc-PEPs that suppressed the folding process. Our preliminary results demonstrated that an aptamer-like electrochemical approach has a promising potential for developing a platform toward screening the antioxidant and amyloid inhibitor molecules targeting Cu(II)-induced folding of α-syn in PD.

A study on use of Telmisartan drug for corrosion inhibition of zinc in 0.1M hydrochloric acid: Surface characterization and Quantum studies

Corrosion inhibition property of Telmisartan on zinc in 0.1 M HCl medium was investigated by chemical and electrochemical techniques. Inhibition action of Telmisartan was found to be increased with increase in concentration and decreased with raise in temperature. Maximum inhibition efficiency of 77% was observed at 20 ppm inhibitor concentration. Inhibition action of inhibitor is due to adsorption on zinc metal surface and it follows the Langmuir adsorption isotherm. Influence of temperature on inhibition action of Telmisartan was studied through activation parameters. Surface morphology of zinc surface with and without inhibitor was examined through SEM and EDX. Surface roughness was studied by AFM and contact angle measurement techniques. FTIR spectral studies confirmed the protecting nature of Telmisartan on zinc corrosion. Quantum chemical data were calculated to prove its suitability as a corrosion inhibitor and to describe the effective adsorption of Telmisartan molecule.