Photocatalytic abatement of VOCs by novel optimized TiO2 nanoparticles

Rapid Temperature-Programmed Separation of Carbon Monoxide and Carbon Dioxide on a Packed Capillary Column in Gas Chromatography: Application to the Evaluation of Photocatalytic Activity of TiO2

“…Typically, the photocatalytic property of a catalyst has been evaluated by using a flow-type reactor. [11][12][13] However, for evaluating several properties of a catalyst, such as the adsorption of VOCs on the catalyst, and determining the photocatalytic rate, the determination of both the VOC and CO2 concentrations in a closed system could also be effective. Because the developed method requires only a small amount of a gaseous sample, it could be suitable for evaluating the photocatalytic property of a catalyst in a closed system.…”

X-Ray Spectroscopy Tools for the Characterization of Nanoparticles

“…Fig. 4(a) (Hussain et al, 2011a) shows the effect of calcination temperatures at a specific moderate calcination time (3 h) on the TNP by XRD patterns in order to establish the optimized calcination temperature. It was found that when the calcination temperature was below 500 • C, the TNP sample dominantly displayed the anatase phase with just small amounts of rutile.…”

“…This lamp has a mixture of UVA light ranging from 320-400 nm and UVB light with a 290-320 nm wavelength which produces 13.6 and 3.0 W radiations, respectively; it is ozone-free and the radiations are produced by a mixture of quartz burner and a tungsten wire filament, as mentioned in the manufacturer's indications). The set up also has gas cylinders (1000ppm ethylene/propylene/toluene), a gas chromatograph (Varian CP-3800) equipped with a capillary column (CP7381) and a flame ionization detector (FID) with a patented ceramic flame tip for ultimate peak shape and sensitivity, which was used for the gas analysis of the products (Hussain et al, 2010(Hussain et al, , 2011a(Hussain et al, , 2011b.…”

“…add drop wise or mix vigorously) that are generally used to define ideal mixing conditions. In our previous studies, TNPs were synthesized at a large scale (2 L gel), and the optimized operating parameters were controlled using the vortex reactor (VR) (Hussain et al, 2010(Hussain et al, , 2011a. Titanium tetra-isopropoxide (TTIP: Sigma-Aldrich) was used as a precursor in these studies, because of its very rapid hydrolysis kinetics.…”

“…Hence, additional disposal or handling steps are needed. New, safe and clean chemical technologies and processes for VOC and ethylene (generated by fruit) abatement are currently being developed (Hussain et al, 2010, 2011a, 2011b, Toma et al, 2006. Conventionally, VOC pollutants are removed by air purifiers that employ filters to remove particulate matter or use sorption materials (e.g.…”