The behaviour of electrodispersed platinum electrodes for the voltammetric electrooxidation of reduced carbon dioxide

Chemisorption of methanol on different platinum electrodes (smooth and rough polycrystalline, monocrystalline, and preferentially oriented), as studied by EMIRS

“…(i) The surface structure of electrodispersed platinum electrodes [ll] plays an important role in diminishing the poisoning phenomena due to CO adsorbates. This correlates well with previous electrochemical studies carried out on this type of electrode for the reduction of CO, [15] and the electrooxidation of CO [16].…”

Comparative EQCM study on electrooxidation of carbon oxides adsorption products on noble metals and their alloys. Polycrystalline Pd-based systems

“…The authors generally agree on the presence of linearly and bridge bonded CO species on Pt surface after CO 2 electrosorption [25,[27][28][29]36,38,48,[50][51][52][53][56][57][58][59], together with possible other adsorbates like COH [28,38,40,45], CHO [43] and COOH species [25,28,[30][31][32][33]41,47,50,59]. It was also postulated that CO 2 molecules only block hydrogen atoms, becoming blocked itself by water molecules and anions [26,44,46,51]. In the case of Rh electrode the adsorption product of CO 2 reduction is regarded as generally more reduced than on Pt [34,35,37,52,54].…”

“…The nature of the product of CO 2 electrosorption (denoted in the literature as adsorbed CO 2 , reduced CO 2 or ''CO 2 '') on polycrystalline Pt and Rh electrodes in acidic solutions has been widely discussed in the literature [25,[27][28][29][30][31][32][33][36][37][38]40,41,[43][44][45][47][48][49][50]52,53,[56][57][58][59]. The authors generally agree on the presence of linearly and bridge bonded CO species on Pt surface after CO 2 electrosorption [25,[27][28][29]36,38,48,[50][51][52][53][56][57][58][59], together with possible other adsorbates like COH [28,38,40,45], CHO [43] and COOH species [25,28,…”

Comparative electrochemical behaviour of CO2 on Pt and Rh electrodes in acid solution

“…The electroformation of CO 2 adsorbates and their subsequent electro-oxidation were studied on Rh in a way similar to that previously reported for rough Pt [6]. Accordingly, the we was potential cycled between 0.01 V and 1.46 V in 0.5 M H2804; then, after saturating the solution with CO 2, the potential was stepped to Ead for different adsorption times t,a.…”

“…Pt and Rh are active electrocatalysts for a number of reactions in aqueous and non-aqueous solutions, but they differ in their behaviour for H-atom electrosorption, and CO 2 electroreduction and electro-oxidation [5][6][7][8][9]. These differences can be related to the fact that Rh catalysts are very active for the selective synthesis of a number of organic compounds from CO and H 2 [10,11].…”