Nitrate reduction on Pt(111) surfaces modified by Bi adatoms

Nitrite Reduction on Bismuth Modified Pt(111) Surfaces in Different Electrolytic Media

“…The catalytic effect of adsorbed bismuth adatoms on the Pt (111) surface towards nitrate reduction in 0.1 M HClO 4 media was previously reported [14]. For Pt(111)/Bi, a net reduction current can be seen at potentials significantly higher (0.62-0.67 V) than on the unmodified electrode.…”

“…Our group also reported recently [14] the catalytic activity of the Pt(111)/Bi electrode towards the reduction of nitrate in acidic media at high potentials (0.6 V) with N 2 O as the main product. In the present paper, the catalytic activity of a Pt(111)/Bi modified electrode for nitrite reduction in different pH electrolyte solutions and different coverages of adatom is reported.…”

“…It has been demonstrated that a very efficient approach to achieve an enhancement of the electrocatalytic properties, in a controlled way, of a well-defined noble metal electrode is to modify its surface composition with the irreversible adsorption of submonolayer amounts of foreign metal adatoms [12][13][14].…”

Formation of volatile products during nitrate reduction on a Sn-modified Pt electrode in acid solution

“…Among the noble metal catalysts studied for nitrate reduction, a great deal of research work has focused on platinum and platinum modified by a second metal, such as germanium, palladium, tin, bismuth, and copper [4][5][6][7][8][9]. For the reduction of nitrate on platinum (at low nitrate concentration), the rate-determining step was suggested to be reduction of (adsorbed) nitrate to nitrite; chemisorbed nitric oxide is the key surface intermediate formed from nitrite, and ammonia and hydroxylamine are the main products [10].…”

Investigation of nitrate reduction on polycrystalline Pt nanoparticles with controlled crystal plane

“…Extensive researches have been conducted on different electrode materials (such as Pt, Pd, Rh, Ir, Ru, alloy and modified electrode) for investigating reaction mechanism, suggesting that the reduction process is strongly influenced by the nature of the electrode surface [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The nitrate reduction on Pt electrode has been studied for several decades and constituted an important part of the electrochemistry of nitrogen compounds [2,[5][6][7][18][19][20][21][22][23].…”