2-Amino-5-(4-pyridinyl)-1,3,4-thiadiazole monolayers on copper surface: Observation of the relationship between its corrosion inhibition and adsorption structure |
| |
| Affiliation: | 1. Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China;2. Shanghai Key Laboratory of Functional Materials, Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Meilong Rd. 130, Shanghai 200237, People’s Republic of China;1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. ICEMS, Instituto Superior Técnico, UTL, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;3. CICECO, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;1. Petroleum Department, PetroVietnam University, 762 Cach Mang Thang Tam Street, Long Toan Ward, Ba Ria City, Ba Ria, Vung Tau Province, Vietnam;2. Faculty of Fundamental Science, PetroVietnam University, 762 Cach Mang Thang Tam Street, Long Toan Ward, Ba Ria City, Ba Ria, Vung Tau Province, Vietnam;3. Department of Chemical Engineering, Ho Chi Minh City University of Technology, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam;1. Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;2. Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;1. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;2. College of Chemistry, Chongqing Normal University, Chongqing 401331, China;3. National-municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing University, Chongqing 400044, China |
| |
| Abstract: | Corrosion inhibition behavior of 2-amino-5-(4-pyridinyl)-1,3,4-thiadiazole (4-APTD) monolayers on copper surface were investigated by electrochemical impedance spectroscopy (EIS), electrochemical polarization measurement and surface-enhanced Raman scattering (SERS) experiment. The EIS mechanism of the copper surface with 4-APTD monolayers fitted to the mode of R(Q(R(QR))). The electrochemical polarization measurements indicated high inhibition efficiency of about 90.4%. SERS results suggested that 4-APTD molecules anchored at copper surface in a tilted orientation directly via N3 and N12 atoms. The transition adsorption states of 4-APTD on the copper surface were observed as the potential applied from 0 to ?1.6 V vs. SCE. |
| |
| Keywords: | A Copper B EIS B Polarization B Raman spectroscopy C Neutral inhibition |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
