期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 112, 期 -, 页码 306-321出版社
ELSEVIER
DOI: 10.1016/j.jtice.2020.06.002
关键词
Electrospinning; TiO2-nanofibers; Schiff base; FESEM/EDX; Acid inhibition; carbon steel
资金
- Deanship of Scientific Research at King Faisal University, Saudi Arabia [1811020]
- Key-Area Research and Development Program of Guangdong Province, China [2019B111107002]
- National Key Research and Development Program of China, China [2018YFE0124900]
- National Natural Science Foundation of China, China [51538007/51778370/51861165204]
- Natural Science Foundation of Guangdong, China [2017B030311004]
- Shenzhen Science and Technology Project, Shenzhen, China [GJHZ20180928155819738]
Non precious TiO2 nanofibers (NFs) Schiff base phenylalanine (SBP) composite was designed via facile methodology; electrospinning and Schiff base loading. The as-fabricated TiO2 NFs/SBP material was investigated in terms of Field emission-scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), Transmission electron microscope (TEM), Fourier-transform infrared spectroscopy (FT-IR), Thermogravimetric analysis (TGA), Brunauer-Emmett-Teller (BET) surface area, Energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) techniques. These physicochemical characterizations indicate the successful design of a nanocomposite of TiO2 NFs/SBP. The corrosion protection of C-steel in acidic chloride environments by the designed TiO2 NFs/SBP material was examined using electrochemical tools (open circuit potential (OCP) vs. time, linear polarization resistance (LPR) corrosion rate, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS)) and surface morphology investigations (FESEM/EDX and FTIR). The findings showed that the protection capacity (E-PDP%) of the individual SBP and TiO2 NFs are 85.6 and 64.8%, respectively, while the E-PDP% value for TiO2 NFs/SBP composite is 97.9% at the same conditions. The as-prepared TiO2 NFs/SBP material acts as a good mixed-type inhibitor and its adsorption at the steel/HCl interface followed Langmuir's isotherm model. FESEM/EDX and FT-IR inspections established the formation of the adsorbed layer of the TiO2 NFs/SBP molecule on the electrode surface. The outcomes display that the TiO2 NFs/SBP composite could be used as an efficient inhibitor with excellent anti-corrosion features for C-steel in the acidic pickling solution. (C) 2020 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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