McPherson Ian J, Ash Philip A, Jacobs Robert M J, Vincent Kylie A
Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford, OX1 3QR, UK.
Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
Chem Commun (Camb). 2016 Oct 18;52(85):12665-12668. doi: 10.1039/c6cc05955d.
Adsorbed formate is observed on a supported Pt nanoparticle for the first time during formic acid electro-oxidation. Bands assigned to OCO stretching and CH bending reveal some OCO but little CH bond weakening on adsorption compared to the free anion. The formate potential dependence is similar to polycrystalline electrodes while adsorbed CO persists up to +1.2 V, 0.5 V higher than on polycrystalline Pt.
在甲酸电氧化过程中，首次在负载型铂纳米颗粒上观察到吸附的甲酸根。与游离阴离子相比，归属于OCO伸缩振动和CH弯曲振动的谱带显示，吸附时存在一些OCO，但CH键减弱程度较小。甲酸根的电位依赖性与多晶电极相似，而吸附的CO在高达+1.2 V时仍存在，比在多晶铂上高0.5 V。
