Facile sol-gel synthesis of calcium oxide nanoparticles for effective removal of Ni(II) from aqueous solution

2021 ◽  
pp. 1-25
Author(s):  
Hany M. Youssef ◽  
Wisam O. Toamah
Keyword(s):  
Aqueous Solution ◽  
Calcium Oxide ◽  
Sol Gel ◽  
Oxide Nanoparticles ◽  
Effective Removal ◽  
Sol Gel Synthesis

Sol–gel synthesis of NASICON discs from aqueous solution

1997 ◽  
Vol 7 (8) ◽  
pp. 1457-1460 ◽  
Author(s):  
Youichi Shimizu ◽  
Yasunori Azuma ◽  
Satoko Michishita
Keyword(s):  
Aqueous Solution ◽  
Sol Gel ◽  
Sol Gel Synthesis

Highly effective removal of Cu(II) in aqueous solution by using mesoporous TiO2

2019 ◽  
Vol 80 (5) ◽  
pp. 884-891
Author(s):  
Daying Chen ◽  
Nasi Tu ◽  
Changkun Si ◽  
Meilin Yin ◽  
Xiaohui Wang
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Sol Gel ◽  
Mesoporous Tio2 ◽  
Adsorption Efficiency ◽  
Batch Experiments ◽  
Order Model ◽  
Effective Removal ◽  
Pseudo Second Order ◽  
Gel Processing

Abstract Mesoporous TiO2 has been prepared by a brief and simple sol–gel processing and applied for the removal of Cu(II) from aqueous solution. The adsorption behavior of mesoporous TiO2 for Cu(II) was investigated using batch experiments. Results showed that the pseudo-second-order model and Langmuir isotherm were more accurate to describe the kinetics process and adsorption isotherm. Mesoporous TiO2 adsorbent displayed excellent Cu(II) adsorption efficiency (195.52mg g−1). The thermodynamic parameters showed that the adsorption was spontaneous and endothermic. It was also found that mesoporous TiO2 could be used at least seven times without obvious loss of its original adsorption efficiency. Therefore, the obtained mesoporous TiO2 could be employed as an effective and low-cost adsorbent for removal of Cu(II) from contaminated effluents.

Sol-Gel Synthesis and Preliminary Characterizations of Novel Silica Hybrid Xerogels

2013 ◽  
Vol 594-595 ◽  
pp. 1009-1014
Author(s):  
S.A. Syed Nuzul Fadzli ◽  
S. Roslinda ◽  
Z. Firuz
Keyword(s):  
Sodium Alginate ◽  
Calcium Oxide ◽  
Sol Gel ◽  
Silica Xerogel ◽  
Particle Sizes ◽  
Mesoporous Composite ◽  
Hybrid Silica ◽  
Hybrid Xerogels ◽  
Mild Temperature ◽  
Sol Gel Synthesis

Hybrid silica xerogel mesoporous composite was synthesized by a mild temperature acid catalysed sol-gel route where a natural copolymer; sodium alginate (Na-COOH) together with calcium oxide (CaO) powder were incorporated into silica sol precursor prior to gel formation. For this study, bulk xerogels samples were prepared with the amount of silica precursor and the natural copolymer was fixed meanwhile the loading of calcium oxide was varied at 10 and 20 wt%. The monolith silica was also synthesized as control parameter. The preliminary properties were investigated using XRD, FTIR and SEM together with EDS for elemental analysis. The calcium oxide powder used in this study was prepared from calcium hydroxide, CaOH compound, which was previously calcined at 1000°C for 3 hours in normal air. The component of calcium oxide and sodium alginate were found to be uniformly dispersed in matrixes without affecting the cross-linked silica formation. As the presence of the components in the silica matrixes, the synthesized hybrid xerogels were found to be crack-free, structurally amorphous and physically opaque. Furthermore, the hybrid xerogels samples were found to have denser bodies, smoother surface, and decreased in particle sizes and thus might produced less brittleness in nature compared to the monolith xerogels.

scholarly journals Effective Removal of Congo Red by Triarrhena Biochar Loading with TiO2 Nanoparticles

Scanning ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Peng Yu ◽  
Tao Hu ◽  
Hong Hui Chen ◽  
Fangfang Wu ◽  
Hui Liu
Keyword(s):  
Aqueous Solution ◽  
Tio2 Nanoparticles ◽  
Congo Red ◽  
Sol Gel ◽  
Environmentally Friendly ◽  
Absorption Capacity ◽  
Gel Method ◽  
Effective Removal ◽  
Macropore Structure ◽  
Prepared Composite

A composite of pyrolytic Triarrhena biochar loading with TiO2 nanoparticles has been synthesized by the sol-gel method. The composite shows a well-developed hollow mesoporous and macropore structure as characterized by XRD, BET, and SEM. When used as an absorbent to remove Congo red from aqueous solution, it was found that as-prepared composite performed better absorption capacity than single biochar or TiO2. The results suggest that biochar loading with TiO2 could be promisingly implemented as an environmentally friendly and inexpensive adsorbent for Congo red removal from wastewater.

scholarly journals Green gelatine-assisted sol–gel synthesis of ultrasmall nickel oxide nanoparticles

2013 ◽  
Vol 39 (4) ◽  
pp. 3909-3914 ◽  
Author(s):  
S. Pilban Jahromi ◽  
N.M. Huang ◽  
M.R. Muhamad ◽  
H.N. Lim
Keyword(s):  
Nickel Oxide ◽  
Sol Gel ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Sol Gel Synthesis

scholarly journals Sol-gel synthesis of magnetic sorbents based on porous iron oxides for the removal of U(VI) from aqueous solution

2017 ◽  
Author(s):  
E. K. Papynov ◽  
A. S. Portnyagin ◽  
A. I. Cherednichenko ◽  
I. A. Tkachenko ◽  
E. B. Modin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Iron Oxides ◽  
Sol Gel ◽  
Porous Iron ◽  
Magnetic Sorbents ◽  
Sol Gel Synthesis
Sign in / Sign up

Export Citation Format

Share Document