Rapid Dechlorination of Polychlorinated Biphenyls on the Surface of a Pd/Fe Bimetallic System

Decolourization of azo dyes using magnesium–palladium system

“…Thus the overall reaction is: [16][17][18][19][20][21][22][23][24][25][26][27]. Although Fe 0 has been applied extensively for remediation of several pollutants, the major drawbacks are slow reaction rates, rapid passivation of the metal and requirement for strict anaerobic conditions.…”

Treatment of chlorinated organic contaminants with nanoscale bimetallic particles

“…These particles are characterized by high surface area to volume ratio, high level of stepped surface, and high surface energy [14,15]. Furthermore, a bimetallic structure [16,17] is adopted in which a thin layer of catalyst (e.g., Pd, Pt) is doped on the surface of a reductant (e.g., Fe, Zn). The presence of catalyst reduces activation energy and increases the rate of dechlorination reactions, more importantly, curtails production of chlorinated byproducts.…”

Removing polybrominated diphenyl ethers in pure water using Fe/Pd bimetallic nanoparticles

“…In this study, approximately 10% of BDE209 could be extracted from both water and nZVI/Pd solid, suggesting that catalytic degradation instead of adsorption played a more important role. Previous studies show that Pd doping to nZVI surface could greatly affect the overall reaction through the facilitated oxidation of nZVI and Pd-meditated hydrogenation [29,30]. In the presence of iron, the corrosion of Fe 0 occurs under anaerobic conditions according to Eq.…”

“…The increase in water pH led to a decrease in the degradation efficiency of BDE209, indicating that acidic conditions were more favorable for the degradation of BDE209 [28]. More hydrogen could be produced under acidic conditions during the corrosion reaction of iron [29,30], which subsequently enhanced the degradation of BDE209. Additionally, the precipitation of metal hydroxides and metal carbonates on the surface of iron and Pd/Fe under high pH conditions may also decrease the corrosion (oxidation) of Fe, which subsequently jeopardized the degradation of BDE209.…”