Degradation of selected polychlorinated biphenyls by montmorillonite clay-templated Fe0/Ni0 bimetallic system

Catalytic degradation of Orange II in aqueous solution using diatomite-supported bimetallic Fe/Ni nanoparticles

“…Clays have proven to be suitable support materials for nZVI and bimetallic particles. [18][19][20] Diatomite is another kind of amorphous silicate mineral which is comprised of fossilised skeletons of diatoms. 21 It has received attention in wastewater treatment processes because of its attractive properties, such as high porosity and permeability as well as chemical inertness.…”

One-pot synthesis of highly active Ni/Fe nano-bimetal by simultaneous ball milling and in situ chemical deposition

“…[6][7][8][9] In recent years, nano-sized zero valent iron (nZVI) has been widely applied to treat a wide range of contaminants due to nZVI being cheap, abundant and non-toxic and possessing excellent chemical, surface and adsorptive properties. [10][11][12][13][14][15] However, using nZVI for remediation of contaminated wastewater is limited due to its lack of stability, easy aggregation and easy passivation and the poor retrievability of nZVI from the treated solution. [16][17][18][19][20] Various nZVI based bimetallic catalysts were developed to study the reductive dechlorination of COC contaminants.…”

Degradation of bisphenol A by nano-sized manganese dioxide synthesized using montmorillonite as templates

“…After oxidation, due to the XRD peak for montmorillonite occurs at basal spacing greater than 11.3 Å, MnO 2 controls the basal spacing of the oxidized clay mineral system, the basal spacing increased to 12.2 Å. The approximate thickness of a montmorillonite sheet alone is 9.6 Å (Johnson et al 1988), hence the vertical thickness of formed MnO 2 particles in the clay interlayer is ~2.6 Å, which is great smaller than nano-MnO 2 synthesized from traditional methods (Murray, 1974), indicating higher surface area and more active reaction sites, hence exhibiting higher reactivity (Gu et al, 2010 andZhang et al, 2015).…”

“…Our previous studies showed that montmorillonite could be used as a template to synthesize subnano-sized zero valent iron (ZVI) (Gu et al, 2010 andZhang et al, 2015). Due to the special structure of montmorillonite, ZVIs could be synthesized in interlayer region of montmorillonite with the average size of 0.5 nm (Gu et al, 2010).…”