Synthesis of hierarchical Ni(OH)2 and NiO nanosheets and their adsorption kinetics and isotherms to Congo red in water

Porous boron nitride nanosheets for effective water cleaning

“…4c) fitted by the Langmuir model gives a maximum adsorption capacity Q m of 782 mg g À 1 , corresponding to complete monolayer coverage. This capacity is significantly higher than those from most adsorbent nanomaterials reported previously [31][32][33][34] . The versatility of porous BN nanosheets for targeting a wide range of organic wastes has been assessed by testing other dyes with opposite charges commonly used in the textile industry, such as the cationic dyes methylene blue (MB) (Fig.…”

“…Dyes sorption then only relies on the surface effect (adsorption of molecules on the hydrophobic BN nanosheet surface), which induces a lower capacity compared with oils and organic solvents. Nevertheless, the dyes sorption capacity of the porous BN nanosheets is still higher than those of most common commercial and state-of-the-art sorbents 14,[31][32][33][34][35] , mainly because of their higher specific surface area. In addition, a large number of unsaturated atoms along the edges of the nanosheets and pores are chemically more reactive and might be stronger adsorption sites for organic molecules such as dyes 36 .…”

Template‐free Formation of Uniform Urchin‐like α‐FeOOH Hollow Spheres with Superior Capability for Water Treatment

“…It appears that the adsorption capacity of Congo red by the as-synthesized α-FeOOH hollow spheres is significantly higher than that of most similar materials reported previously. [18,[33][34][35]55,56,61,63] prolonged hydrothermal treatment, the adsorbed precursors will further crystallize into rod-or sheet-like nanostructures, forming a complete hierarchical shell.…”

Dye-sensitized MIL-101 metal organic frameworks loaded with Ni/NiOx nanoparticles for efficient visible-light-driven hydrogen generation

“…The Ni(OH) 2 and NiO samples were prepared according to Yu's work. 15 This comparison further reveals the positive effect of the Ni/NiO x catalyst in boosting the H 2 generation.…”