Magnetic NiFe2O4 nanoparticles and multi-walled carbon nanotubes functionalized cellulose bioadsorbent with enhanced adsorption property and rapid magnetic separation
writer：Ru Jiang, Huayue Zhu, Yongqian Fu, Enmin Zong, Shengtao Jiang, JianqZhu, Yingying Zhbing Li, Jianqia
keywords：cellulose
source：期刊
specific source：Carbohydrate Polymers
Issue time：2020年
Magnetic NiFe2O4
nanoparticles and multi-walled carbon nanotubes functionalized cellulose
composite (m-NiFe2O4/MWCNTs@cellulose) as a magnetic bioadsorbent
was prepared and used for effectively removing Congo Red (CR) from aqueous
solution. The chemical and physical properties of the prepared m-NiFe2O4/MWCNTs@cellulose
were characterized by XRD, TGA, FT-IR, VSM, SEM and TEM. Batch experiments were
carried out to investigate the adsorption capacity and mechanisms. Effects of
different adsorption parameters such as initial CR concentration, adsorbent
dosage and temperature were studied. Results demonstrated that m-NiFe2O4/MWCNTs@cellulose
had high adsorption capacity for CR from aqueous solution. The obtained
experimental data fitted well with the pseudo-second-order equation and
followed the Langmuir isotherm model with a maximum adsorption capacity of
95.70 mg g?1 for CR. The m-NiFe2O4/MWCNTs@cellulose
with rapid magnetic separation and high adsorption capacity can be a promising
and recyclable engineering biomaterials for purification and treatment of
practical wastewater.