Preparation, characterization and application of Nano CdS doped with alum composite electrolyte

A comprehensive study on coagulant performance and floc characterization of natural Cassia obtusifolia seed gum in treatment of raw pulp and paper mill effluent

“…At 1652 cm -1 , OH stretching resulted from the hydroxyl group within alum and also the Al-O bond vibrations (Ni et al, 2012). Additional peaks at 1058 cm -1 was due to SO 4 2stretching whereas peak at 923 cm -1 was assigned to the possible HOO matrix (Singh et al, 2012;Frost et al, 2013). The presence of OH and HOO groups were due to the formation of hydrogen bonds between alum and suspended solids during coagulation process (Baranović, 2014).…”

Effects of thickeners on thermophysical properties of Alum as phase change material for energy storage

“…The FT‐IR curves of Alum, MC, Alum with 1 wt% MC before and after 60 cycles were revealed in Figure 19b. In the FT‐IR curve of Alum, the OH stretching vibration absorption peak of crystal water was located at 3373 cm −1 , and the deformation vibration absorption peak of it was located at 1634 cm −1 33,34 . The characteristic peak at 1104 cm −1 was asymmetric stretching peak of SO 4 2− , and the vibration peak at 612 cm −1 was asymmetric deformation absorption peak of SO 4 2− .…”

Nanostructured δ-MnO2/Cd(OH)2 Heterojunction Constructed under Ambient Conditions as a Sustainable Cathode for Photocatalytic Hydrogen Production

“…This is attributed to the effective charge separation due to the formation of the heterojunction of δ-MnO 2 /Cd(OH) 2 with Cd(OH) 2 having conduction and valence band edges lower than those of δ-MnO 2 , facilitating effective electron and hole transfer. 78,79 To further understand the photocurrent phenomenon and the mechanism of the observed results, we applied the equivalent circuit model described by Chen et al, 80 which comprises a series resistance R s , a "trapping resistance" R trapping , accounting for electron−hole recombination at the trap states, a "charge-transfer trap resistance" R ct,trap , which represents the resistance charge transfer at the electrode−electrolyte interface, and two capacitive elements: C bulk , representing space charge and chemical capacitance, and C trap , which shows carrier accumulation in the surface states. It should be noted that R ct,trap may be influenced by surface states.…”

“…As can be seen from Table , both the space charge resistance and the interfacial resistance decrease under illumination. This is attributed to the effective charge separation due to the formation of the heterojunction of δ-MnO 2 /Cd­(OH) 2 with Cd­(OH) 2 having conduction and valence band edges lower than those of δ-MnO 2 , facilitating effective electron and hole transfer. , …”