Pulse electrodeposited PtSn electrocatalyst on a PEDOT/graphene-based electrode for ethanol oxidation in an acidic medium

Electrocatalytic performance of Pt–Ni nanoparticles supported on an activated graphite electrode for ethanol and 2-propanol oxidation

“…These features have been already observed on different electrocatalysts; such as Pt/C, Pt-Rh, Pt-Ni/C and Pt-Sn/C. [13][14][15][16][17][18][19][20] The rst oxidation peak (peak I) corresponds mainly to the formation of CO 2 for ethanol and to the formation of CO 2 and acetone for 2-propanol whereas the second oxidation peak (peak II) is caused by other products as acetic acid and acetaldehyde for ethanol and to the oxidation of acetone for 2-propanol. The mechanism of ethanol electrooxidation in acid solution has been summarized as the following scheme of parallel reactions:…”

“…However, Pt is easily poisoned by strongly adsorbed residues of alcohol electro-oxidation. 12 To overcome this drawback, various metals have been studied in several combinations with Pt, resulting on binary or ternary metallic electrocatalysts, such as Pt-Ru, 17 Pt-Sn, 18 Pt-Rh 19 and Pt-Sn-Mo. 20 The promoting effect of second or third elements has been attributed to the synergistic and electronic effects.…”

Electrodeposition of Pt3Sn Nano‐alloy on NiFe‐Layered Double Hydroxide with “Card‐house” Structure for Enhancing the Electrocatalytic Oxidation Performance of Ethanol

“…The two peaks located at 486.95 and 495.07 eV were designated to the Pt 4f of the Pt 3 Sn NPs/NiFe‐LDH/NF, which is mainly result of Sn 4+ 3d 5/2 , Sn 2+ 3d 5/2 , Sn 0 3d 5/2 , Sn 4+ 3d 3/2 , Sn 2+ 3d 3/2 and Sn 0 3d 3/2 . Compared with the Sn 3d characteristic peaks of Sn NPs/NiFe‐LDH/NF, there are more Sn 0 3d 5/2 and Sn 0 3d 3/2 shoulder peaks, it showed that there is electron transfer from Pt to Sn after alloying [27] …”

“…Pioneering studies have demonstrated that Pt catalysts with Au, Ag, Pd, Fe, Cu, B, P, or Sn can form heterostructures, alloying structures, and core‐shell structures, which changes the electronic structure of Pt and improves their the ability to resist CO‐poisoning [22–25] . For example, the synergy effects between Sn and Pt leads an abundance of the OH species, regulates the electrochemical structure, produces a low CO adsorption energy, and significantly enhances the catalytic activity [26,27] . Furthermore, alloying treatment can also reduce the cost of the catalyst.…”

Electrocatalytic reduction of oxygen at platinum nanoparticles dispersed on electrochemically reduced graphene oxide/PEDOT:PSS composites

“…2,3 However, the cost of Pt is very high and its supply is limited. 4 To circumvent this problem, several authors investigated and reported non-Pt based catalysts, 5,6 while others used Pt-dispersed nanoparticles on different supports 1,2 to reduce the amount of Pt-loading. The dispersion of Pt on catalyst supports not only reduces the cost of the noble metals but also improves the efficiency of the electrocatalysts.…”