Novel visible light driven Mg–Zn–In ternary layered materials for photocatalytic degradation of methylene blue

Enhanced photocatalytic activity of TiO2-impregnated with MgZnAl mixed oxides obtained from layered double hydroxides for phenol degradation

“…These nanoparticles were previously shown to partially block supporter pores, resulting in a decrease in BET surface area of hydrotalcite (MgAl) [28]. As shown in Table 1, TiO 2 /MgZnAl-R composite surface areas decreased gradually with the increase in zinc (Zn 2+ /Mg 2+ ) content, in agreement with other studies [8,17,29]. TiO 2 /MgZnAl-5…”

“…The calcined MgZnAl-5 ( Fig. 4B) shows intense peaks related to ZnO and also MgO (periclase) similar to crystallographic descriptions in the literature [7,8,30,36]. Peaks related to TiO 2 and magnesium oxide were observed in the TiO 2 /MgAl composite (Fig.…”

“…Layered double hydroxides (LDHs) or hydrotalcite-like anionic mineral clays have an octahedral structure derived from the mineral brucite (Mg(OH) 2 ) [8,9]. The general formula for ternary LDHs is [10].…”

Layered Double Hydroxide Materials in Photocatalysis

“…In addition, the amount of hydroxyl radicals can be detected by the luminescence technique using terephthalic acid (TA) as probe molecules, and the Co-doped LDH also shows more surface hydroxyl radicals. Up to now, various metal ion dopants have been introduced into the LDH host layers to tune the textural properties and photocatalytic activity, such as Fe-MgAl-LDH [32], NiZnCr-LDH [33], Ga-ZnAl-LDH [34], Ti-ZnAl-LDH [26], and In-MgZn-LDH [35].…”

Study on Adsorption of Cd2+ by Manganese Modified Diatomite

“…That the organic matter is removed in the process of modification, or the structure is damaged; reduce the intensity of a diffraction peaks of cristobalite, montmorillonite and the diffraction peaks of b almost disappeared [4][5][6], indicating that both the content decrease in the amount of modifying process. After the modification of diatomite, the diffraction peak of manganese phase was shown in Figure 2 mark 4, which could be combined with the surface material of diatomite, and the manganese content was grafted on the surface of diatomite [7]. From table 1 shows that the modified diatom specific surface area than the unmodified diatom specific surface area increased by nearly 8 times, but only increase the aperture 0.26nm, combined with SEM map, diatomite through manganese oxide modified, significantly increasing the specific surface area, but after the grafting of manganese oxide and the pore structure of diatom surface grafting like memory type growth, pore structure did not change significantly [8].…”