DEMS and RAMAN study of the monatomic hydrogen adsorption during electro-reduction of NO3- and NO2- at Pt nanoparticles supported at W18O49-ZrO2-C nanocomposite

Membrane-less Paired Electrolysis for Cooperative Conversion of Complex NO in a Complexing Absorption System

“…However, it decreased continuously as the reaction progressed, reaching 0.007 mmol at the 10th min and being no longer detected at the 15th min. It was speculated that NO 2 – as the intermediate was further oxidized and reduced at the anode and cathode, as shown in eqs –: ,, In addition, NO 3 – may also diffuse to the cathode for a series of reduction reactions considering the complexity of the system, as shown in eqs –: , As mentioned above, the anode and cathode acted synergistically for complex NO electro-conversion in the MLPE system. The possible direct and indirect electro-conversion pathways are shown in Figure .…”

“…In addition, NO 3 − may also diffuse to the cathode for a series of reduction reactions considering the complexity of the system, as shown in eqs 21−23: 57,58…”

IrOx–Pt electrode for the electro-oxidation of ethanol in alkaline-type direct ethanol fuel cells: an excellent CO-tolerant catalyst

“…The Tafel slope is a parameter that can give information on the involvement of Ir (III) to Ir (IV) transition in the catalysis of the ethanol oxidation reaction. 78 By using the famous Tafel eqn (5), 43 the analysis of the polarization curves in the potential region, as marked by the dotted parallelogram in Fig. 9(A), was performed in 1.0 M NaOH solutions having 0.00 M, 0.15 M and 0.25 M ethanol, as shown in Fig.…”

Electroreduction of Nitrate to Ammonia on Palladium–Cobalt–Oxygen Nanowire Arrays

“…In this regard, the development of catalysts for NRA is of great value. Many metallic catalysts with appreciable catalytic activity, such as Cu, Fe, Co, Ni, Bi, Ru, Ag, Pt, and Pd, have been developed to catalyze the electroreduction of nitrate. − Among them, Pd has fast NO 3 – reduction kinetics due to a lower *NO 3 dissociation barrier. , Meanwhile, PdO could serve as an active center for the adsorption of hydrogen species by surface oxygen atoms with a high adsorption energy (−3.22 eV). , Therefore, the combination of Pd and PdO can promote the selective hydrogenation of nitrate to ammonia. − In addition, increasing oxygen vacancies in metal oxide-based catalysts can adsorb nitrates, weaken the oxygen–nitrogen bond, and prevent the formation of by-products. , …”