The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Photo-Fenton reaction is a kind of advanced oxidation technology based on the reaction of hydroxyl radical. In order to further enhance the photocatalytic efficiency, with citric acid as the catalytic additive, and malachite green as the substrate, experiments on the photocatalytic oxidation of organic pollutants in UV/Fenton/Citric acid system were carried out. Effect of Fe(II) concentration, initial...
The loading photocatalyst of TiO2/hollow pearls was prepared by sol-gel method and hollow pearls as carrier. The results indicate that the approach of TiO2 loading on hollow pearls is viable. The scanning electron microscope (SEM) images show that the coating layer is symmetrical on the hollow pearls; the UV-vis DRS shows that TiO2/hollow pearls has strong absorption in the UV range, and the absorption...
The degradation of an azo dye crystal violet by UV/Fenton oxidation process in the presence of heteropolyacid solution has been investigated. The degradation rate is strongly dependent on the pH, initial concentrations of the dye, Fe2+, H2O2 and phosphotungstic acid. The effect of these parameters has been studied and the optimal reacting conditions were experimentally determined. It was found to...
A new carrier of catalyst-Na2Ti3O7 whisker was selected and TiO2/Na2Ti3O7 was prepared by sol-gel method, then complex photocatalyst H3PW12O40/Na2Ti3O7 was prepared by dipping way. SEM photographs showed the production was covered well, TiO2 was anatase type and H3PW12O40 was Keggin structure. UV-vis RDS showed wavelength range unfolded red shifts. The photocatalytic activity of H3PW12O40/TiO2/Na2...
The photocatalyst of titanium dioxide/float pearls which had float performance was prepared by sol-gel method. The compound photocatalyst of phosphotungstic acid/titanium dioxide/float pearls which had high photocatalysis activity and floatability was prepared through surface modifying by dipping method. Scanning electron microscopy, X-ray diffraction and UV-Vis diffused reflectance spectroscopy analysis...
In order to investigate the effects of photocatalysis technique to the wastewater of dye, a new carrier of catalyst- micron attapulgite clay was selected. The TiO2/attapulgite clay photocatalyst was prepared by the sol-gel method. X-ray diffraction indicates that its diffracted peak of surface is same as the characteristic peak of TiO2. SEM pictures showed the form of sample is amorphous, and the...
A new carrier of catalyst was chosen. Sol-gel method was used to preparate TiO2/potassium titanate photocatalyst. EDS shows the main peck included Ti, O, K in potassium titanate whisker. The main peak of K disappeared and the peaks of Ti, O stayed after whisker was covered. It directed that the surface of sample was covered by TiO2. The figure of UV-vis diffuse reflection shows TiO2/potassium had...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.