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运用电化学循环伏安法(CV)和原位傅里叶变换红外反射光谱(in situ FTIRS)研究了酸性介质中铂纳米粒子电极(nm-Pt/GC)上NO吸附及其电催化还原过程.结果表明,NO分子的吸附是电催化还原的重要步骤.在铂纳米粒子电极上饱和吸附的NO存在两种不同键合强度的吸附态,其中弱吸附的NO(NOW)在0.60 V至-0.05 V电位区间还原生成N2O和NH4+;而强吸附的NO(NOS)则在-0.05 V至-0.15 V区间还原,其产物为NH+.
The adsorption of NO on platinum nanoparticles (nm-Pt / GC) in acidic medium and its electrocatalytic reduction process were investigated by electrochemical cyclic voltammetry (CV) and in situ FTIRS The results showed that the adsorption of NO molecules was an important step in the electrocatalytic reduction.At the same time, NO adsorbed on the platinum nanoparticle electrode showed two different bonding strengths, of which NO (NOW) was weakly adsorbed at 0.60 V to - N2O and NH4 + were reduced by the reduction of 0.05 V, while the strongly adsorbed NO (NOS) was reduced at -0.05 V and -0.15 V, and the product was NH +.