Nano-Ti/TiO2-PAn复合膜电极制备及其电催化降解对硝基苯酚

利用溶胶－凝胶法和电化学聚合制得Ti/nano TiO2-PAn复合膜电极,并通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)及循环伏安法(CV)对制备的Ti/nano TiO2-PAn复合膜电极的结构和表面形貌进行了表征.以此电极对模拟污水进行了电化学处理,研究了nano TiO2-PAn复合膜电极初始浓度、不同扫描速度、不同扫描圈数等因素对对硝基苯酚电催化降解影响,实验表明初始浓度为320 mg/L的对硝基苯酚,经Ti/nano TiO2-PAn复合膜电极电催化降解1 h,降解率可达65.7%,在     

In situ time-resolved FTIRS study of adsorption and oxidation of ethylene glycol on Pt（100） electrode

Adsorption and oxidation of ethylene glycol （EG） on Pt（100） electrode were studied by in situ timeresolved FTIRS （TRFTIRS）. The TRFTIR spectra recorded at 0.10 V illustrate that an IR band appears near 2050 cm^-1 at t 〉 5 s, corresponding to linearly bonded CO formed in dissociative adsorption of EG. The TRFTIR results have confirmed also that CO species are distributed uniformly on Pt（100） surface. Another band appears near 2342 cm^-1 at t 〉 70 s, associating with IR absorption of CO2 produced in the direct oxidation of EG. With the increase of electrode potential, the direct oxidation of EG becomes gradually the main reaction： When the potential is above 0.40 V, the oxidation of EG occurs mainly via the reactive intermediates, i.e. species containing -COOH determined by in situ TRFTIRS.