Low-cost synthesis of metal oxide nanoparticles and their application in adsorption of commercial dye and heavy metal ion in aqueous solution

Sol-Gel Synthesis of NiO Nanoparticles and Investigation on Adsorption Capacity in the Removal of Cr(VI) from Aqueous Solution

“…According to the Figure, the removal percentage increased from 45% with 0.1 g of NiO nanoparticles to about 86% with a dosage of 0.6 g. The increase of the adsorbent's dosage causes the increase of the adsorption sites, which, in turn, makes the surface area expand 15,16 . A number of researchers have reported similar results for the adsorption of Cr on ZnO and SnO 2 and Pb(II) onto NiO nanoparticles 9,17 .…”

“…They showed that TiO 2 -P25 nanoparticles had comparable adsorption capacity to other metal oxide nanoparticles in the adsorption of organic dyes. Kumar et al 9 investigated the lowcost synthesis of metal oxide nanoparticles and their application in the adsorption of Cr(VI) in the aqueous solution. The prepared metal oxide nanoparticles (ZnO and SnO 2 ), with specific surface area of 15 Cr(VI) adsorption capacity, respectively.…”

Synthesis and Characterization of Surface Ion-imprinted Polymer Based on Mesoporous Silica SBA-15 for Selective Removal of Cu(II) from Aqueous Solutions

“…Among them, adsorption plays an important role due to its flexibility in design, operation and superior efficiency under certain conditions [9]. Conventional absorbents, like activated carbon, zeolites, clays and metal oxides [10][11][12][13], have some disadvantages for the removal of heavy metals. Such as nonspecific, low selectivity, poor hydrothermal stability and low reusability [14].…”

Evaluation of CNTs/MnO2 composite for adsorption of 60Co(II), 65Zn(II) and Cd(II) ions from aqueous solutions

“…Nanoparticles like nanosized ferric oxides, aluminum oxides, titanium oxides, manganese oxides, magnesium oxides and cerium oxides are likely to have an important role in water purification [27][28][29]. Among them, MnO 2 enjoys pride of place because of its lower cost and environmentally benign nature, high surface area and exchange performance [30,31].…”