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

Now-a-days, use of non-chromium compounds as corrosion inhibitors in anti-corrosive paints for metals is taking center stage of research to protect environment from hazardous compounds. The present study deals with the synthesis of chromium free vanadium doped titanium dioxide and their inhibition efficiency towards corrosion prevention of reinforced bar (rebar) in chloride contaminated pore solution. The doping efficiency of the xV-TiO2 and subsequently their inhibition characteristics have been analyzed with the help of electrochemical measurements. Doping of about 2% V enables to achieve an excellent inhibition efficiency of ∼90%. The formation of protective nanometric adsorptive layer on the rebar till an optimal content of the inhibitor provides corrosion protection against chloride environment. The vanadium doped TiO2 materials were prepared as novel inhibitor against rebar corrosion. The doping efficiency of the xV-TiO2 and subsequently their inhibition characteristics were analyzed with the help of electrochemical measurements. Excellent inhibition efficiency of ∼90% was achieved for doping of ∼2% V. Formation of protective nanometric adsorptive layer on the rebar provides corrosion protection against chloride environment. [Display omitted] •The vanadium doped TiO2 materials were prepared as novel inhibitor against rebar corrosion.•The micro-analytical characterization studies confirm the nano sized xV-TiO2.•The highest inhibition efficiency of the optimized xV-TiO2 was recorded using electrochemical measurements.•Surface characterization studies proven the function of nanometric adsorptive layer on the rebar.