Layered double hydroxides as efficient photocatalysts for visible-light degradation of Rhodamine B

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

“…After calcination, a sharp peak (d p % 3.2 nm) with higher intensity and higher amount of the larger mesopores, compared to the ZnAl-LDH sample was detected. This is in agreement with the published literature concerning the thermal degradation of LDH resulting in the increase of the surface area and porosity of the calcined samples [21,23,24,35]. The impregnation of TiO 2 decreases the surface area of all impregnated samples because of the significant decrease/disappearance of smaller mesopores situated in the range of approximately 3.2 nm.…”

“…The thermal treatment of LDHs, also called thermal activation, causes the collapse of the layered structure leading to the formation of non-stoichiometric metastable mixed oxides with developed surface area and specific acid-base and redox properties [22]. Doping of LDHs leads to the formation of defects in the layered structure and initiates the development semiconductor properties, facilitating the transfer of the photo-generated electrons to the surface of photocatalysts [23]. Therefore, doped LDHs have a great potential for the application as solar-induced photocatalysts in dye degradation reactions.…”

The layered double hydroxide route to Bi–Zn co-doped TiO2 with high photocatalytic activity under visible light

“…However, the use of Bi and Zn together has never been reported. To synthesize this material, we used the LDH route synthesis, a process less common than sol-gel but already known as an efficient route for doped-TiO 2 [42][43][44][45][46][47][48][49][50][51]. Bi-Zn co-doped TiO 2 exhibits a high photocatalytic activity under visible light.…”

High efficient photocatalytic activity of Zn-Al-Ti layered double hydroxides nanocomposite

“…ZnO is often considered as an alternative to TiO 2 because it can absorb a greater energy fraction of the solar spectrum and more quanta of light [10]. Enormousres researches have reported that LDH photocatalysts presented an effective removal performance of organic contaminants [11,12]. Furthermore, enormous LDH photocatalysts were reported that Zn-Ti LDH exhibited the highest photocatalytic performance in the degradation of organic pollutants [11,13].…”

“…Enormousres researches have reported that LDH photocatalysts presented an effective removal performance of organic contaminants [11,12]. Furthermore, enormous LDH photocatalysts were reported that Zn-Ti LDH exhibited the highest photocatalytic performance in the degradation of organic pollutants [11,13].…”