Gemini surfactant-modified montmorillonite with tetrachloroferrate (FeCl4−) as a counterion simultaneously sequesters nitrate and phosphate from aqueous solution

Alginate Composites Reinforced with Polyelectrolytes and Clay for Improved Adsorption and Bioremediation of Formaldehyde from Water

“…Indeed, a decrease in surface area after clay modification or encapsulation has been reported. 8,20,21 All in all, the surface area of the beads is in line with reported results in the literature. 18,59,60 Because beads made with 6 g•L −1 PEI and 20 g•L −1 PMt were closest in PEI content, they were further compared in other aspects, such as morphology and FA removal capacity.…”

“…Although the previously measured BET surface area of native Mt was 32 m 2 ·g −1 , the surface area of PMt beads was smaller than that of PEI beads, possibly due to the composite forming clumps, which are absent in the raw materials but act to reduce exposed surfaces in the final product. Indeed, a decrease in surface area after clay modification or encapsulation has been reported. ,, All in all, the surface area of the beads is in line with reported results in the literature. ,, Because beads made with 6 g·L −1 PEI and 20 g·L −1 PMt were closest in PEI content, they were further compared in other aspects, such as morphology and FA removal capacity.…”

“…Zhao et al, for example, increased the selectivity of methyl orange oxidation by incorporating the catalyst, TiO 2 , into a molecularly imprinted alginate gel designed to adsorb the dye from a mixed solution. Jin et al immobilized Fe 0 /Fe 3 C in a carbonaceous matrix that improved both adsorption and electron transfer for oxidative degradation of bisphenol A. Montmorillonite (Mt), halloysite, and other clay minerals have been incorporated into alginate beads for environmental applications, such as adsorption of harmful dyes, toxic ions, and heavy metals from wastewater, or for slow release of fertilizers in soils. − The use of clay was shown to enhance mechanical and thermal stability, improve water retention, and increase the ease of separation from the waste stream. − Organically modified clays and various polymers have also been introduced into alginate to expand the range of adsorbable compounds, improve stability, and modify structure. ,− …”

A Nonaqueous Eutectic Electrolyte for Rechargeable Iron Batteries

“…The proposed mechanism is further supported by the high-resolution spectra presented in Figure (g), which were recorded to determine the valence state of Fe. Peaks at 712.4 and 725.2 eV correspond to the Fe 3+ 2p 3/2 and Fe 3+ 2p 1/2 states, respectively, while the presence of Cl 2p in the cycled electrode, as shown in Figure (h), confirms the Fe 3+ state from chloroferrate-ions. , A broad satellite peak at ∼717.1 eV is also attributed to the Fe 3+ state. , Additional peaks corresponding to Fe 2+ 2p 3/2 at 707.7 eV and Fe 2+ 2p 1/2 at ∼720.8 eV indicate the presence of Fe 2+ , suggesting the formation of Fe x -O upon cycling. , The evidence drawn from the XRD and XPS analysis strongly corroborate the conversion reactions occurring and formation of Fe x V 2 O 5 which contributes to the irreversible capacity retention observed in the Fe||V 2 O 5 cell.…”

“…Peaks at 712.4 and 725.2 eV correspond to the Fe 3+ 2p 3/2 and Fe 3+ 2p 1/2 states, respectively, while the presence of Cl 2p in the cycled electrode, as shown in Figure 6(h), confirms the Fe 3+ state from chloroferrate-ions. 29,58 A broad satellite peak at ∼717.1 eV is also attributed to the Fe 3+ state. 57,59 Additional peaks corresponding to Fe 2+ 2p 3/2 at 707.7 eV and Fe 2+ 2p 1/2 at ∼720.8 eV indicate the presence of Fe 2+ , suggesting the formation of Fe x -O upon cycling.…”