Dechlorination of p-Chlorophenol by Fe-Pd Nanoparticles Promoted by Poly (γ-glutamic acid)–Dopamine Composite

• Main Authors: Shiyu Zhang, Chao Zhang, Mingyue Liu, Renliang Huang, Rongxin Su, Wei Qi, Zhimin He
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2018-08-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/780

Palladium-doped nanoscale zerovalent iron nanoparticles (Fe-Pd NPs) was fabricated and stabilized by poly (γ-glutamic acid)–Dopamine composite (PGA-DA). The fabricated nanoparticles had high dechlorination activity towards p-Chlorophenol (p-CP). PGA-DA modified Fe-Pd NPs significantly outperformed PGA modified ones in catalytic activities even in weak alkaline condition. Fe-Pd NPs@PGA-DA (10 mg PGA-DA and 0.4 wt% Pd loading) could achieve 100 % p-CP removal within 60 min. It is worth mentioning that the presence of DA alone could overwhelm dechlorination capacity of Fe-Pd NPs toward p-CP. The coordination bonding between catechol and Fe ions was also investigated in detail. This study demonstrated that PGA-DA is a promising modifier and stabilizer for Fe-Pd NPs, which was expected to be applied in real environmental remediation technology.