Electrocatalytic dechlorination of 2,4-dichlorophenoxyacetic acid using nanosized titanium nitride doped palladium/nickel foam electrodes in aqueous solutions

Influence of environmental factors on the electrocatalytic dechlorination of 2,4-dichlorophenoxyacetic acid on nTiN doped Pd/Ni foam electrode

“…2,4-D was dechlorinated by direct and indirect reduction mechanisms on nTiN doped Pd/Ni foam electrodes. Meanwhile, the existence of electrode activation procedures indicates that the direct reductive dechlorination is far less effective compared with the indirect one, indirect reductive dechlorination plays a leading role in electrocatalytic dechlorination on nTiN doped Pd/Ni foam electrodes [32]. The generation of active hydrogen atom [H] on catalyst Pd involves the following reaction, as described in Eq.…”

“…Thus, it has been proposed as an appropriate material of counter electrodes for dye-sensitized solar cells [29], all solid-state pH electrodes [30] and biocompatible electrodes for bio-sensing [31]. Nanosized titanium nitride (nTiN) has been successfully utilized for Pd layer modification to improve the dechlorination ability of the electrode with respect to its electronic nature, hydrogen evolution reaction (HER) process and geometric effect [32]. NTiN doped Pd/Ni foam electrode showed excellent performances in 2,4-D dechlorination.…”

Graphene-modified Pd/C cathode and Pd/GAC particles for enhanced electrocatalytic removal of bromate in a continuous three-dimensional electrochemical reactor

“…BrO 3 À can be transformed to nontoxic Br À by the reduction at the cathode. In the electrochemical reduction process, the cathode materials are considered as the most critical parameter because of its predominant influence on reaction pathway and treatment efficiency (Comninellis and Chen, 2010;Sun et al, 2014). Several electrode materials catalyzing BrO 3 À reduction were reported such as tungsten oxide (Casella and Contursi, 2005), activated carbon felt (Kishimoto and Matsuda, 2009), polyaniline-modified electrode (Ding et al, 2010), and phosphomolybdate-modified multi-walled carbon nanotubes (Skunik and Kulesza, 2009).…”

Dechlorination of Trichloroacetic Acid Using a Noble Metal-Free Graphene–Cu Foam Electrode via Direct Cathodic Reduction and Atomic H*

“…12,13 Some researchers have reported that palladium (Pd) and gold (Au) modified electrodes showed good activities for the reduction of CAAs. 14,15 Pd has been explored for catalytic contaminant reduction due to the property to retain atomic H*, a highly activated intermediate hydrogen atom produced from water reduction which would serve as a strong reducing agent.…”