2010年5月11日 · High surface area immobilized TiO2 were grown via several electrochemical anodization methods for photocatalytic applications. Mesoporous TiO2 was grown in a molten salts electrolyte and in a sulfuric acid solution above the micro sparking potential. On the contrary, nanotubular TiO2 was grown in a sodium sulfate solution with the addition of fluoride ions, leading to the formation of fine ...

2016年11月30日 · Photocatalysis is a photoelectrochemical process where a semiconductor, normally in the form of nanoparticles, uses the adsorbed water as electrolyte and the sun or artificial light for degrading pollutants or for inactivating microorganisms [1].Common semiconductors considered for photocatalysis are TiO 2, ZnO, Fe 2 O 3, CdS and ZnS [2].In a photocatalytic process, as the semiconductor ...

2008年10月30日 · EIS is a steady state method measuring the current response to the application of an ac voltage as function of the frequency [9]. EIS has been widely employed to study the kinetics of electrochemical and photoelectrochemical processes including the elucidation of salient electronic and ionic processes occurring in the DSSCs [10] , [11] , [12 ...

由于碳和 TiO2涂层的双重保护作用，复合材料具有良好的可逆容量、良好的倍率性能和循环性能。 对 SiO@C/TiO2、SiO@C、N-SiO 3种材料进行 EIS测试，绘制 Nyquist图（见图 6），可观察到 3种曲线具有相似的变化趋势，均由高频区的半圆以及低频区的倾斜直线组成。

2023年3月8日 · Electrochemical impedance spectroscopy (EIS) offers kinetic and mechanistic data of various electrochemical systems and is widely used in corrosion studies, semiconductor science, energy conversion and storage technologies, chemical sensing and biosensing, noninvasive diagnostics, etc. EIS is based on the perturbation of an electrochemical system in equilibrium or in steady state, via the ...

Download scientific diagram | EIS spectra of TiO2 annealed at different temperatures from publication: Phase-dependant photochemistry of TiO2 nanoparticles in the degradation of organic dye ...

2016年11月30日 · Actually, EIS technique is widely used in the study of photoelectrochemical and electrochemical systems since it allows discriminating the different phenomena proceeding at a different rate, such as series resistances; transport resistances; electron-hole recombination and consequently electron lifetime [18].

Download scientific diagram | EIS spectra of TiO2, Fe2O3 and TiO2-Fe2O3 electrodes. from publication: Enhanced photocatalytic and electrochemical performance of TiO2-Fe2O3 nanocomposite: Its ...

2016年11月1日 · 摘要 根据 iso 22197-1:2007 标准评估商用二氧化钛 (p25) 和内部制备的 p25/石墨烯复合材料的光催化活性。通过电化学阻抗谱（eis）技术进一步研究了基于tio 2 的裸材料和复合材料的光活性，以更好地了解石墨烯在复合材料中的功能。

2008年10月30日 · EIS study also confirmed that, under illumination, the smallest Rct2 was associated with a TiO2 thickness of 17 μm, with the Rct2 increased as the thickness of TiO2 film increased.