Trisodium citrate assisted morphological evolution of α-MoO3 via a facile hydrothermal route and its application to improve the corrosion resistance of zinc coating

• Published in: Materials research innovations Vol. 27; no. 6; pp. 371 - 381
• Main Authors: Gangaiah, Vijayakumar, K. O., Nayana, Adarakatti, Prashanth S., Thimmanna Chandrappa, Gujjarahalli
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 19.09.2023
• Subjects: corrosion studies; hydrothermal; morphological evolution; trisodium citrate; zinc electrodeposition; α-MoO
• DOI: 10.1080/14328917.2023.2178744
• ISSN: 1432-8917

A facile trisodium citrate-assisted hydrothermal route was demonstrated for the synthesis of α-MoO 3 nanostructures. Trisodium citrate concentration-dependent morphological evolution of α-MoO 3 was achieved in hydrothermal process. The morphological evolution from nanorods to nanoplates was observed with increase in trisodium citrate concentration, owing to its shape directing effect by hindering the growth of α-MoO 3 crystal along [001] direction. The time-dependent hydrothermal experimental results suggested that the formation and growth of α-MoO 3 nanorods proceed through 'Ostwald ripening-splitting' mechanism. The synthesised α-MoO 3 nanorods were successfully used to produce Zn - α-MoO 3 coatings on mild steel using an acid sulphate bath, and the corrosion behaviour of the generated coatings was also investigated.