Fabrication, characterization and corrosion feature evaluation of mild steel in 1 M HCl by nanoparticle-modified activated carbon

Abstract

To lower the rate of mild steel industrial corrosion, the nanoparticle-modified activated carbon (NMAC) is utilized. Coprecipitation technique was used to synthesize activated carbon (AC) and nanoparticle ZnO-or NiO-modified activated carbon (NMAC). The surface morphology and size of the resulting modified nanoparticle and carbon steel were characterized by SEM, EDS, FTIR and TEM analysis. The corrosion rate and inhibition efficiency of mild steel is calculated by weight reduction method in 1 M HCl solution. The corrosion rate of mild steel decreased with modified activated carbon, especially NiO NPs. In NiO NPs and NiO-AC nanocomposites, mild steel inhibition efficiency in 1 M HCl at ambient temperature is 43.69% and 38.59%, respectively.

Copper sulfide and zinc oxide hybrid nanocomposite for wastewater decontamination of pharmaceuticals and pesticides

“…From the FTIR spectrum of ZnO, the major peaks of ZnO have been observed at 430, 880, 1637, and 3430 cm −1 . The peak at 442 cm −1 corresponds to Zn–O symmetric stretching vibration 63 and the peak at 809 cm −1 is due to bending vibration of Zn–O in agreement with 42 , 63 – 65 . The peaks at 1635 cm −1 and 3422 cm −1 are due to O–H bending and stretching vibration mode respectively of the water molecule and surface hydroxyl groups.…”

ZnO-NPs/AC composite antibacterial agents with N-halamine glycinate functionalized silica-mesoporous silica coating for water disinfection

“…The bands observed at 1750 cm −1 are probably due to carbonyl C O whereas, the bands at 1000 cm −1 is due to C–O stretching vibration. All these FT-IR assignments are based on FTIR results previously reported for similar materials [ 8 , 23 , 26 ]. The increase of adsorption of AC tendency towards the ZnO-NPs is probably due to the presence of functional groups of the activated carbon surface [ 21 ].…”

“…The second region is observed at 1640-1750 cm −1 , which is assigned due to stretching vibration of ʋ(CO) at 1750 cm −1 and at 1670 and 1640 cm −1 due to bending vibrations of σ(N–H) and σ(OH) vibrations, respectively. The third region of absorptions showed peaks at 1095 cm −1 , 807 cm −1 , and 471 cm −1 cm −1 are assigned due to symmetrical and asymmetrical ʋ(Si–O) vibrations [ 9 , 10 , 23 , 26 ]. The peak or shoulder at 967 cm −1 is assign to the tensile vibration of Si–OH [ 9 , 10 , 23 , 26 ].…”

“…The third region of absorptions showed peaks at 1095 cm −1 , 807 cm −1 , and 471 cm −1 cm −1 are assigned due to symmetrical and asymmetrical ʋ(Si–O) vibrations [ 9 , 10 , 23 , 26 ]. The peak or shoulder at 967 cm −1 is assign to the tensile vibration of Si–OH [ 9 , 10 , 23 , 26 ]. The absence of peaks due to Zn–O vibrations is due to its low content of Zn–O and is probably obscured with the high intensity peaks of silica or AC.…”