Preparation and photo-catalytic activities of FeOOH/ZnO/MMT composite

Photocatalytic Properties of All Four Polymorphs of Nanostructured Iron Oxyhydroxides

“…[39] Similarly, it has been reported that TiO 2 /b-FeOOH heterostructured nanocomposites demonstrated excellent photodegradation of methyl orange, which has been attributed to the unique matching of energy band potentials between the b-FeOOH nanorods and the anatase phase of TiO 2 nanoparticles, which facilitated efficient electron-hole transport and separation between the two semiconductors. [40] Moreover, efficient separation of photogenerated charge carriers by nanocomposites [41] and core-shell structures [42] were reported to improve the photocatalytic degradation of various dyes including pentachlorophenol, methyl orange, and Rhodamine B. In all cases, electron-hole recombination is retarded by the heterostructures, leading to the high photocatalytic activities.…”

Synthesis, characterization, and photo-catalytic activity of Ag/ZnO/SBA-15 composite

“…1A. Three peaks resulting from the (100), (110) and (200) reflections belonged to a two-dimensional hexagonal lattice structure [2]. The peak at (100) was also obtained for the amino-functioned sample, but with an obvious decrease due to functionalization and indicated a decrease in the high order of the mesoporous material.…”

“…Afterwards, 0.1 g of the NH 2 -SBA-15 support was added to 100 mL of a 0.1 M solution of Zn(NO 3 ) 2 and heated in a water bath at 80°C for 4 h. The amino-functionalization of SBA-15 bound the ZnO catalyst in solution. The pH was adjusted to 13.0 by adding NaOH and HNO 3 [2], creating an alkaline environment for zinc oxide hydrolysis. After filtration and drying, the ZnO/SBA-15 mixture and 50 mL of 0.05 M AgNO 3 were combined.…”

“…Zinc oxide (ZnO) is a common photo-catalytic material because it possesses a band gap similar to that of titanium dioxide (TiO 2 ) . With excellent properties such as low cost and high photo-catalytic efficiency, ZnO has attracted significant research efforts in the field of pollutant degradation [1][2][3][4]. However, due to its wide band gap (3.2 eV) and low surface area, utilization of ZnO materials have been limited [5][6][7].…”

Improving natural sunlight photocatalytic efficiency of ZnO nanowires decorated by iron oxide cocatalyst via a simple drop method

“…Visible light absorption is in line with the sample's colour evolution from blue/white to brick red/orange. The visible light evolution could also be explained by the d-d transition of Fe(III) in the FeOOH or in Fe 2 O 3 [14][15][16][17][18][19] . The hypothesis of one of these oxides formation seems consistent with the brick red/orange sample aqueous solution at 40°C for 10 minutes [20] .…”