DOI: 10.1002/vjch.202400042 ISSN: 2572-8288
Preparation and corrosion protection of polypyrrole/SiO2 nanocomposite doped with 3‐nitrosalicylic acid on aluminum
Le Van Khoe, Ha Manh Hung, Hoang Thi Thuy, Pham Huy Binh, Bui Tuan Anh, Le Minh Duc, Nguyen Thi Huong, Doan Thi Yen Oanh, Nguyen Xuan Thai, Vu Quoc TrungAbstract
Polypyrrole/SiO2 nanocomposite doped with 3‐nitrosalicylic acid was synthesized in three concentrations of 3‐nitrosalicylic acid: 0.01
m
, 0.005 m
, and 0.0025 m
. FTIR spectroscopy, thermogravimetric analysis (TGA), Raman scattering spectroscopy, and FESEM imaging further assisted in determining the shape and structure of the polypyrrole/nanocomposite product. The aluminum protection arrangement of the paint film comprising polypyrrole/SiO2 nanocomposite doped with 3‐nitrosalicylic acid was proven by electrochemical methods. The salt spray test results also demonstrated the protective efficacy of the paint film comprising polypyrrole/SiO2 nanocomposite doped with 3‐nitrosalicylic acid to suppress corrosion. The best corrosion prevention results were obtained with a polypyrrole/SiO2 nanocomposite dispersion paint film doped with 0.01 m
3‐nitrosalicylic acid at a concentration of 2%.