Synthesis, characterization and corrosion inhibition behavior of 2-aminofluorene bis-Schiff bases in circulating cooling water

Abstract

Two new bis-Schiff bases, namely 2-bromoisophthalaldehyde-2-aminofluorene (M1) and glutaraldehyde 2-aminofluorene (M2) were synthesized and were characterized, the potentiodynamic polarization curve confirmed that they were anode type inhibitors.

Synthesis, Crystal Structure and Characterization of Two Cobalt (II) Complexes Based on Pyridine Carboxylic Acid Ligands

“…The emission fluorescence of Co‐MOF 1 and Co‐MOF 2 may be attributed to the internal π*‐π transition of the ligand or ligand‐metal charge transfer (LMCT) or metal‐ligand charge transfer (MLCT) [28,29] . The peak positions of Co‐MOF 1 and their ligand are similar, indicating that the fluorescence of Co‐MOF 1 is mainly the luminescence of the ligand itself.…”

Experimental Study of Poly(1‐Acetamide‐3‐vinylimidazolium Bromide) as a Corrosion Inhibitor for N80 Carbon Steel in HCl

“…Both corrosion rates and IE values signify that PCVIB can be an effective corrosion inhibitor and has a promising potential to form a tight barrier at the metal/solution interface. [41]…”

“…By contrast, when the absolute value of ΔG ads is � 40 kJ mol À 1 , the interaction between inhibitors and the metal surface may be attributed to the chemical bonding, that is, a chemisorption process might occurs by means of the charge sharing or transferring. [41] Also, PCVIB contains many nitrogen heteroatoms having lone-pair electrons and nitrogen-hetercycles with π-conjugated electrons, the coordinated interaction may be formed via the charge share and transfer. Therefore, the obtained ΔG ads = À 33.34 kJ mol À 1 suggests that the adsorption of PCVIB on N80-CS surface can be considered to be a spontaneous physico-chemisorption process.…”

“…Therefore, the obtained ΔG ads = À 33.34 kJ mol À 1 suggests that the adsorption of PCVIB on N80-CS surface can be considered to be a spontaneous physico-chemisorption process. [41]…”

Synthesis of MOFs/GO composite for corrosion resistance application on carbon steel

“…9(a) and (b), respectively, where R s is the solution resistance, the total polarization resistance R p (R p ¼ R s + R c + R ct ) represents the corrosion resistance of the coating to corrosive media, 55,56 R c is the coating resistance, R ct is charge transfer resistance, and CPE is the constant phase element; C coat and C dl are the capacitance response and charge transfer capacitance response of the double layer coating on the electrolyte/substrate interface, respectively. 57,58 Due to the unevenness and roughness of the coating surface, CPE is oen introduced instead of capacitor C, and its impedance is expressed by the following formula: 59…”