Graphene oxide-modified organic Gaomiaozi bentonite for Yb(III) adsorption from aqueous solutions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10439194" target="_blank" >RIV/00216208:11310/21:10439194 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8HgSylQE.D" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8HgSylQE.D</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchemphys.2021.125176" target="_blank" >10.1016/j.matchemphys.2021.125176</a>
Alternative languages
Result language
angličtina
Original language name
Graphene oxide-modified organic Gaomiaozi bentonite for Yb(III) adsorption from aqueous solutions
Original language description
Bentonite, known as all-purpose soil, is a kind of clay widely used in engineering. Graphene oxide (GO) has a broad application prospect in many fields as a superior adsorbent. In this study, a new type of adsorbent, graphene oxide modified organic Gaomiaozi (GMZ) bentonite was synthesized. The adsorption behavior of Yb(III) through batch experiments on the GMZ bentonite and graphene oxide-modified organic GMZ (GO-GMZ) bentonite was studied. Before the experiments, the two adsorbents were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The results show that the adsorption of Yb(III) onto GMZ bentonite and GO-GMZ bentonite reaches equilibrium within 60 min. The Yb(III) adsorption process is well described by the pseudo-second-order kinetic model and the Langmuir isotherm model. The maximum Langmuir adsorption capacity of Yb (III) onto GO-GMZ bentonite is 36.90 mg/g higher than that onto GMZ bentonite of 34.48 mg/g, which demonstrates that the GO-GMZ bentonite improves the adsorption performance of GMZ bentonite. It can also be confirmed by the characterization results that the montmorillonite layers in GO-GMZ bentonite have a larger pore structure and layer spacing, which is beneficial to the intercalation of cations. Because the GO-GMZ bentonite has the main composition of bentonite, it can help to eliminate the irreversible aggregation and accumulation of graphene oxide in solutions and can improve the recyclability of bentonite. Considering the other advantages of bentonite such as low-cost, high stability, easy availability, and environmental friendliness, it is worth popularizing and applying the new GO-bentonite adsorbent.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Chemistry and Physics
ISSN
0254-0584
e-ISSN
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Volume of the periodical
274
Issue of the periodical within the volume
December
Country of publishing house
CH - SWITZERLAND
Number of pages
9
Pages from-to
125176
UT code for WoS article
000702851800006
EID of the result in the Scopus database
2-s2.0-85113396398