Oxygen vacancy-rich WOx/C nanowire networks are fabricated by a one-pot and high yield solvothermal method, exhibiting ultrafast and high adsorption capacities.
The
mesoporous tungsten oxide and carbon (WO
x
/C) nanowire network was successfully synthesized using an
environmentally friendly solvothermal method. The as-prepared composite
was applied as an adsorbent for metal ion elimination from wastewater
via batch experiments. The adsorption results suggested that the adsorption
interactions between WO
x
/C and Sr2+ and Co2+ were pH-dependent, while the effect
of ionic strength toward sorption capacity depended on the solution
acidity and adsorbates. The sorption process followed the Langmuir
model with the maximum sorption capacity of Sr2+ and Co2+ onto WO
x
/C being 175.0 and 326.0
mg/g at 308 K, respectively. Thermodynamic parameters, namely, ΔS°, ΔH°, and ΔG°, indicated an endothermic, but spontaneous adsorption
process. All the exhibited results demonstrated that the as-synthesized
WO
x
/C nanowire network has the potential
to be an effective adsorbent for heavy metal ion remediation from
aqueous solutions.
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