Photo-responsive behavior of γ-Fe2O3 NPs embedded into ZnAlFe-LDH matrices and their catalytic efficiency in wastewater remediation

Shape-controlled synthesis and facet-dependent performance of single-crystal Bi25GaO39photocatalysts

“…S2, † it can be seen that the characteristic peaks at 400 and 224 nm gradually disappeared with the increase in reaction time, indicating the decomposition of 4-nitrophenolate ions and the aromatic group. 30,31 Moreover, the BET specific surface areas of Bi 25 GaO 39 cubes and Bi 25 GaO 39 tetrahedra were all less than 0.2 m 2 g −1 . The very small BET specific surface area may not have an important influence on the photocatalytic activity of Bi 25 GaO 39 .…”

Visible light photodegradation of 4‐nitrophenol by new high‐performance and easy recoverable Fe3O4/Ag2O‐LDH hybrid photocatalysts

“…[32] The comparison between the XRD patterns of virgin LDH and composite exhibits no peak shift, implying that the crystal structure had no change after introducing magnetite and Ag 2 O into the crystal lattice of LDH. [37] Also, the calculation of the lattice parameter "a" based on the reflection of (110) plane for both pure LDH and composite, as it describes the intercation distance within the hydroxide layers, shows no distinguishable differences between the intercation distance after deposition of the Ag 2 O and Fe 3 O 4 NPs (Table 1). This indicates the complete reconstruction of brucite-like LDH sheets with no cations leaching during the reconstruction process.…”

“…The photocatalytic degradation efficiency declined from 98% in the first use to about 70% in the fifth cycle. The reduction in the activity of the M 10 A 5 -LDH probably returns to the leaching of Ag 2 O nanoparticles or weight loss during the separation and washing process of the catalyst from the degraded Zn-Ni-Al LDO Visible 3.03 93 [52] Pt-Ag/Zn 2 Al UV-vis 2.77 71 [30] Fe 2 O 3 /ZnAlFe LDH UV 2.31 100 [37] yP-LDH_500CN Visible 2.50 98 [48] M 10 A 5 -LDH UV-vis 13.33 93 This work solution. Additionally, the XRD pattern remains unchanged after five cycles of photodegradation (Figure 9), indicating that the nanostructure of catalyst, spatially Ag 2 O content, remains stable.…”

NADH Regeneration Promoted by Solar Light Using Gold Nanoparticles/Layered Double Hydroxides as Novel Photocatalytic Nanoplatforms

“…[36] The LDH-2D materials, with their characteristics as high surface area, ionic exchange capacity, semiconductor properties and easy tunable textural and morphological features, are used many times in processes initiated by light. [37][38][39][40] However, as far as we know, no work deals with their potential application to regenerate the NADH from NAD + . Since AuNPs, [41] PtNPs [4,25] were successfully used for cofactors regeneration, the aim of this work is to be a proof of concept for the ability of supported AuNPs on ZnAl-LDH catalysts to photo-initiate the NAD + reduction reaction.…”

“…The LDH‐2D materials, with their characteristics as high surface area, ionic exchange capacity, semiconductor properties and easy tunable textural and morphological features, are used many times in processes initiated by light [37–40] . However, as far as we know, no work deals with their potential application to regenerate the NADH from NAD + .…”