2 research outputs found
The photoelectrochemical cell with hydrogen accumulation at the conditions of natural insolation
The film photoanodes based on CdSe and NT-TiO2/CdSe have been formed by the electrochemical and painting methods. It is shown that the introduction of graphene oxide into the structure of the semiconductor CdSe film promotes absorption of light and leads to improvement in their characteristics by 25-30 %. The compatibility of the cathode based on composite of hydrogen-sorbing intermetallic alloys LaNi4.5Mn0.5 + LaNi3.5Al0.7Mn0.8 with current-conductive additives in pair with the CdSe photoanode is shown. It was found that 95 – 98 % of the total current generated under the influence of sunlight at the anodes was used on the formation and accumulation of hydrogen by cathodes
Photoelectrochemical characterization and photocatalytic properties of mesoporous TiO
Optically transparent, crack-free mesoporous titania and
zirconia-doped titania thin film photocatalysts were fabricated by
sol-gel technique, using nonionic amphiphilic block copolymer
Pluronic P123 as template. The structural and optical properties
of these films were characterized using SEM, low-angle XRD, and
UV/Vis spectroscopy, hexane adsorption investigation. Band gap
energy and the position of flatband potentials were estimated by
photoelectrochemical measurements. Enhancing of photocatalytic
activity of zirconia-doped films relative to pure TiO2
originates from an anodic shift of the valence band edge
potential. Catalytic activity of mesoporous TiO2 and TiO2/ZrO2 (5–50% of ZrO2) films in the
processes of CrVI to CrIII photoreduction and 2,4-dinitroaniline photooxidation correlates with crystalline size
and growth with increasing of specific surface area of the
samples