Photocatalytic O2 evolution from water over Zn–Cr layered double hydroxides intercalated with inorganic anions

Enhanced photocatalytic performance of a Ti-based metal-organic framework for hydrogen production: Hybridization with ZnCr-LDH nanosheets

“…S8). In the case of pristine ZnCr-LDH, strong and broad peaks centred at 3300–3600 cm −1 and 1635 cm −1 are observed and are assigned as the O-H stretching vibration of the hydroxyl groups in the brucite layers and the H-O-H bending vibration of interlayer water molecules, respectively 40 . In addition, a characteristic of ZnCr-LDH in its nitrate form is exhibited as an absorption peak around 1340 cm −1 for the interlayer NO 3 − vibration band.…”

“…In addition, a characteristic of ZnCr-LDH in its nitrate form is exhibited as an absorption peak around 1340 cm −1 for the interlayer NO 3 − vibration band. The bands observed below 700 cm −1 represent Zn/Cr–OH and Zn–O–Cr stretching vibration modes 40 . Pristine NH 2 -MIL-125(Ti) and the ML200 hybrid composite exhibit similar characteristic bands: the carboxylic acid functional groups of NH 2 -MIL-125(Ti) in the region of 1380–1700 cm −1 and the vibrations of the O-Ti-O groups in the region of 400–800 cm −1 41 .…”

Facile synthesis of indolizines using layered double hydroxides@poly(p‐phenylenediamine) as a catalyst with a green tool (neat technology)

“…Afterwards, the reaction was set at 65°C for 18 h without being stirred. Then, the resulting green slurry was filtered, washed several times with distilled water and dried at 60°C in an oven for 24 h …”

“…Chan and Rawat and their respective co‐workers reported oxidative and electrochemical polymerization of various aromatic diamines . A large classification of two‐dimensional anionic clay materials is the layered double hydroxides (LDHs) with the formula [M 2+ (1− x ) M x 3+ (OH) 2 ](A n − ) x / n ⋅ z H 2 O . LDHs or hydrotalcite‐like compounds, due to their layered and evenly divided structure, extensive surface area, high porosity, controllability of layer intervals and anionic exchange, have been used to absorb colored wastes.…”

A Comparative Study on The Adsorption Behavior of Congo Red on to ZnAl and ZnCr Layered Double Hydroxides

“…Although with different intensity, both Zn-Al and Zn-Cr LDHs have the same vibration band properties at 1381 cm -1 and shoulder at 1450 cm -1 . According to Hirata, et al [11], and Mohapatra and Parida [1], the presence of a vibration band around 1381 cm -1 can be assigned as the v3 band of CO3 2anion. This finding agrees with the result of XRD analysis that the interlayer space of the synthesized LDHs is mainly contained by CO3 2-anion.…”