Adsorption characteristics and behavior of a graphene oxide–Al13 composite for cadmium ion removal from aqueous solutions

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67372-67379 ◽  
Author(s):  
Lu Yan ◽  
Qian Zhao ◽  
Tingshun Jiang ◽  
Xiufang Liu ◽  
Yingying Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Graphite Oxide ◽  
Cadmium Ion ◽  
Adsorption Characteristics ◽  
Hydrolysis Method ◽  
Ion Removal ◽  
Ft Ir ◽  
And Behavior

Graphene oxide–Al13 (GO–Al13) composites were synthesized by a hydrolysis method on the basis of graphite oxide and were characterized by XRD, FT-IR and SEM.

Alkaline deoxygenated graphene oxide as adsorbent for cadmium ions removal from aqueous solutions

2015 ◽  
Vol 71 (11) ◽  
pp. 1611-1619 ◽  
Author(s):  
Jun Liu ◽  
Hongyan Du ◽  
Shaowei Yuan ◽  
Wanxia He ◽  
Pengju Yan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Transmission Electron ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Ft Ir

Alkaline deoxygenated graphene oxide (aGO) was prepared through alkaline hydrothermal treatment and used as adsorbent to remove Cd(II) ions from aqueous solutions for the first time. The characterization results of transmission electron microscopy, X-ray diffraction, Raman spectroscopy, and Fourier transform infrared (FT-IR) spectra indicate that aGO was successfully synthesized. The batch adsorption experiments showed that the adsorption kinetics could be described by the pseudo-second-order kinetic model, and the isotherms equilibrium data were well fitted with the Langmuir model. The maximum adsorption capacity of Cd(II) on aGO was 156 mg/g at pH 5 and T = 293 K. The adsorption thermodynamic parameters indicated that the adsorption process was a spontaneous and endothermic reaction. The mainly adsorption mechanism speculated from FT-IR results may be attributed to the electrostatic attraction between Cd2+ and negatively charged groups (–CO−) of aGO and cation-π interaction between Cd2+ and the graphene planes. The findings of this study demonstrate the potential utility of the nanomaterial aGO as an effective adsorbent for Cd(II) removal from aqueous solutions.

Adsorption characteristics of graphene oxide in the removal of Cu(II) from aqueous solutions

2017 ◽  
Vol 72 ◽  
pp. 308-317 ◽  
Author(s):  
In-Geol Yi, ◽  
Jin-Kyu Kang ◽  
Jae-Hyun Kim ◽  
Seung-Chan Lee ◽  
Eun-Hye Sim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Adsorption Characteristics

Adsorption characteristics of Th(IV) ions on reduced graphene oxide from aqueous solutions

2013 ◽  
Vol 287 ◽  
pp. 478-483 ◽  
Author(s):  
Ning Pan ◽  
Jianguo Deng ◽  
Debin Guan ◽  
Yongdong Jin ◽  
Chuanqin Xia
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Reduced Graphene Oxide ◽  
Adsorption Characteristics ◽  
Reduced Graphene

Preparation of Graphene with Ultrasound-Assisted in the Process of Oxidation

2010 ◽  
Vol 34-35 ◽  
pp. 1784-1787 ◽  
Author(s):  
Hui Jiang Yu ◽  
Zheng Guang Zou ◽  
Fei Long ◽  
Chun Yan Xie ◽  
Hao Ma
Keyword(s):  
Graphene Oxide ◽  
Graphite Oxide ◽  
Oxidation Process ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Hummers Method ◽  
Reduced Products ◽  
Ft Ir ◽  
Ir Analysis ◽  
Xrd Patterns

To get single-layer of graphene, exfoliating fully intercalated graphite oxide into single- layer graphene oxide is one of the important factors. In this paper, graphite oxide prepared by the Improved Hummers Method, and ultrasound was added to the Low-temperature Reaction of this oxidation process to improve the efficiency of intercalation. Then the obtained graphene oxide was dispersed with surfactant and reduced with Hydrazine Hydrate. XRD patterns indicated that the layer distance of graphite oxide did increased at the aid of the ultrasound, and the obtained reduced products were single- and few-layer. FT-IR analysis further confirmed the preparation of graphite oxide and graphene.

Preconcentration of U(vi) ions on few-layered graphene oxide nanosheets from aqueous solutions

2012 ◽  
Vol 41 (20) ◽  
pp. 6182-6188 ◽  
Author(s):  
Guixia Zhao ◽  
Tao Wen ◽  
Xin Yang ◽  
Shubin Yang ◽  
Jiali Liao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Graphene Oxide Nanosheets ◽  
Ion Removal

Graphene oxide nanosheets have the highest sorption capacities of today's nanomaterials for U(vi) ion removal from aqueous solutions.

scholarly journals Preparation of Nanocomposite Heteropoly Metalate Based Graphene Oxide: Insight into Cadmium Adsorption

2017 ◽  
Vol 7 (3) ◽  
Author(s):  
Hanieh Fakhri
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Metal Ion ◽  
Maximum Sorption Capacity ◽  
Ion Removal ◽  
Vis Spectroscopy ◽  
Maximum Sorption ◽  
Ft Ir ◽  
Cadmium Adsorption ◽  
Excellent Stability

We developed a facile strategy for preparation of heteropoly metalate/graphene oxide nanocomposite as a new ion exchanger for cadmium ion removal from aqueous solution. The synthesized nanocomposite was characterized by X-ray powder diffraction (XRD), UV-Vis spectroscopy, FT-IR spectroscopy and Raman spectroscopy. Our findings indicated that the combination of heteropoly metalate nanoparticles with graphene oxide results in an excellent performance for cadmium ions removal of aqueous solution. The experimental data demonstrated that the adsorption isotherm fitted well by Langmuir model with maximum sorption capacity of 47.85 mg/g. The removal behavior of this compound was evaluated by various parameters such as contact time, concentration of metal ion, pH of solution and temperature. In addition, the effect of interfering cations on the cadmium adsorption is investigated. Dubinin–Radushkevich model represented physical sorption occurred as bold mechanism that is confirmed by thermodynamic parameters. Also, the obtained data of the recycling experiment presented excellent stability after 4 consecutive cycles.  This study indicated heteropoly metalate supported graphene oxide with good performance for removal of cadmium can be used for treating polluted solution by other heavy metal.

ADSORPTION CHARACTERISTICS OF Co(II) IONS FROM AQUEOUS SOLUTIONS ON ROMANIAN PEAT MOSS

2009 ◽  
Vol 8 (5) ◽  
pp. 1089-1095 ◽  
Author(s):  
Laura Bulgariu ◽  
Corneliu Caramalau ◽  
Matei Macoveanu
Keyword(s):  
Aqueous Solutions ◽  
Peat Moss ◽  
Adsorption Characteristics

Synthesis and Characterization of Reduced Graphene Oxide

2013 ◽  
Vol 678 ◽  
pp. 56-60 ◽  
Author(s):  
Cherukutty Ramakrishnan Minitha ◽  
Ramasamy Thangavelu Rajendrakumar
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
High Performance ◽  
Structural Changes ◽  
Epoxy Group ◽  
Xrd Analysis ◽  
Si Substrates ◽  
Reduced Graphene ◽  
Reduced Graphite Oxide

Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene oxide was prepared by oxidizing graphite to form graphite oxide. From XRD analysis the peak around 11.5o confirmed that the oxygen was intercalated into graphite. By using hydrazine hydrate, the epoxy group in graphite oxide was reduced then the solution of reduced graphite oxide (rGO) is exfoliated. Raman spectrum of rGO contains both G band (1580 cm-1), D band (1350 cm-1). The remarkable structural changes reveals that reduction of graphene oxide from the values of ID/IG ratio that increase from 0.727 (GO) to 1.414 (rGO). The exfoliated reduced graphite oxide solution is spin coated on to the SiO2/Si substrates.

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