Synthesis of Nanoporous TiO2 with the Use of Diluted Hydrogen Peroxide Solution and Its Application in Gas Sensing

摘要: The chemical routes of metal oxidation in presence hydrogen peroxide solutions are tailor-made for the synthesis biocompatible oxide surfaces with clean intermediate and end products, such as oxides, hydroxides, water. hydrolysis titanium is particularly interesting medical applications, forming micro- nanoscale titania surfaces. In this paper, content solution revised, allowing fabrication gas sensor devices based on nanoporous titania. Nanopore microcrack formations were discussed detail by monitoring structural changes thin film surface field-emission scanning electron microscopy (FE-SEM). A stable rutile crystalline phase was detected glancing incidence X-ray diffraction (GI-XRD) measurement after repetitive hydrothermal processes. Electrical conductance measurements carried out at high temperatures (400–600 °C) under humid airflow (40% RH@20 injection various concentrations a wide set test compounds (C2H3N, CO, H2, NO2, C2H6O), to observe sensing capabilities material. Furthermore, humidity effects properties toward C2H6O have been discussed.