Glucose electrooxidation in alkaline medium: Performance enhancement of PdAu/C synthesized by NH 3 modified pulse microwave assisted polyol method

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

“…This value is higher than that obtained on PdAu/C (2.372 lA mM -1 ) synthesized via the pulse microwave assisted polyol method [76], confirming the beneficial effect of NH 3 on the catalyst (Fig. 4) [82]. As a next step, in order to eliminate the poisoning effect of the adsorbed species on Pd-active sites, the addition of CeO 2 was used for incorporation of a second metal in Pd.…”

“…Despite the fact that Pd-based electrocatalysts present better activity in alkaline environment than those based on Au and Pt, there are still not many relevant works in literature. Very recently our research group studied a series of Pdbased electrocatalysts in alkaline media, such as Pd x Rh y /C [24], Pd x Sn y /C [75], Pd x Au y /C [76], Pd x Au y -NH 3modified [82] and PdCeO 2 /C [83]. More precisely, the first two were examined as anode materials for GOR, while the latter three ones were tested as material for glucose sensors.…”

Ceria promoted Pd/C catalysts for glucose electrooxidation in alkaline media

“…6B. With the increase of CeO 2 content until the Pd:CeO 2 molar ratio is 3, the current density increases from 4.4 mA cm −2 on Pd/C to 5.7 mA cm −2 on Pd/CeO 2 -C-3, which is even higher than that on Pd-based binary catalysts [17][18][19]30]. While a further increase of the CeO 2 content in the Pd/CeO 2 -C catalysts leads to the decrease of the current density, and even worse than that on Pd/C.…”

“…Furthermore, the supported Pd catalysts, not like Pt, have a poor dispersion, with much bigger particle size than that of Pt with the similar catalyst preparation process [19,20]. Ammonia adjustment for Pd preparation through glycol reduction method can decrease the Pd particle size a little [17,21], but its dispersion needs further improvement for exploring http its capability for glucose electrooxidation. In order to take advantage of both the electrocatalytic property of Pd toward glucose electrooxidation and the synergistic function of CeO 2 and its possible role in catalyst preparation for decreasing metal particle size, before Pd deposition, CeO 2 is designed to be firstly decorate the carbon supporting materials.…”

“…Among the different tentative candidates as the electrocatalysts for glucose electrooxidation, Pd based catalysts exhibited high activity, desirable stability, and high selectivity [14][15][16][17][18][19]. On the other hand, the poison problem still exists with Pd alone as the catalyst.…”