Synthesis and application of graphene oxide aerogel as an adsorbent for removal of dyes from water

Tu, Tran Hoang; Cam, Phan Thi Ngoc; Huy, Le Van Trong; Phong, Mai Thanh; Nam, Hoàng Minh; Hieu, Nguyen Huu

doi:10.1016/j.matlet.2018.11.164

Cited by 79 publications

(22 citation statements)

References 18 publications

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“…The TEM images of ZnO-rGO show the formation of quasi-spherical ZnO nanoparticles, which are homogeneously and independently distributed on the GO surface. [25][26][27]…”

Section: Characterizationmentioning

confidence: 99%

Kinetic modeling of ZnO‐rGO catalyzed degradation of methylene blue

Nisar

Saeed

Usman

et al. 2020

Int J of Chemical Kinetics

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Photodegradation of organic pollutants strongly depends on design of metal oxide semiconductor photocatalysts. Graphene, if composited with ZnO, can effectively enhance its photocatalytic performance for the eradication of pollutants from aqueous medium. Here in, ZnO‐rGO is reported as highly active catalyst for degradation of methylene blue. A 200‐mg/L solution of methylene blue dye was completely degraded within 1 h in comparison to 74% and 56% degradation over ZnO and rGO, respectively. The commonly used mechanisms of heterogeneous catalytic reactions, the Langmuir‐Hinshelwood mechanism, and the Eley‐Rideal mechanisms, were used to describe the reaction kinetics. The Langmuir‐Hinshelwood mechanism was found as more favorable in this study. Apparent activation energy, Eap, true activation energy, ET, entropy, ΔS, and enthalpy, ΔH were calculated as 36.2 kJ/mol, 13.1 kJ/mol, 197.5 J/mol, and 23.1 kJ/mol, respectively.

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“…The TEM images of ZnO-rGO show the formation of quasi-spherical ZnO nanoparticles, which are homogeneously and independently distributed on the GO surface. [25][26][27]…”

Section: Characterizationmentioning

confidence: 99%

Kinetic modeling of ZnO‐rGO catalyzed degradation of methylene blue

Nisar

Saeed

Usman

et al. 2020

Int J of Chemical Kinetics

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“…In graphite, the inter layer separation was just about 3.33 Å, [14] but with the existence of oxygencontaining groups on graphite sheet, the C-C bonding broke down in the oxidation process and the interplanar distance was increased and lead to lower the value of 2θ. [15] After splicing GO sheet with sulfonate group, the sharp diffraction peak at 2θ = 10.70 o illustrated the disarrangement in GO sheet (dspacing increase) [16] and reducing the crystallite chemical site. For Fe3O4/SGO, the peak observed at 75-0033) and could further prove the chemical properties of that magnetic catalyst.…”

Section: Characterization Of Catalyticmentioning

confidence: 99%

Synthesis of furfural from sugarcane bagasse by hydrolysis method using magnetic sulfonated graphene oxide catalyst

Trung

Thinh

Anh

et al. 2020

Vietnam Journal of Chemistry

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Furfural, an important compound applied in many areas, could be synthesized from biomass which is inexpensive and abundant. In this study, magnetic sulfonated graphene oxide (Fe3O4/SGO) was synthesized and used as a catalyst for producing furfural from sugarcane bagasse by co-precipitation method. The characteristics of the catalyst material were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, Raman spectroscopy, Brunauer-Emmett-Teller specific surface area, and the vibrating-sample magnetometer. The results showed that Fe3O4/SGO was successfully synthesized with a specific surface area of 121.8 m 2 /g. The empirical data indicated that under the condition of 190 o C, 90 mins of reaction, the furfural synthesis efficiency could reach 14.07 %. According to the results, Fe3O4/SGO is highly promising for furfural production from biomass.

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“…Among water treatment technologies, adsorption has shown to be an effective approach to remove several kinds of pollutants in water and as a result is the most widely used technology in water treatment processes [24][25][26]. Recently, carbon-rich materials have been used as adsorbents in water purification such as activated carbons [27][28][29][30], carbon nanotubes [25,[31][32][33][34][35], biochar [36][37][38][39], carbon fibers [40], and graphene oxides [41][42][43]. Furthermore, zeolites [44][45][46], silica [47][48][49] and clay-based nanocomposites [50][51][52] have also been employed as suitable materials in water treatment.…”

Section: Introduction To Magnetic Nanoparticlesmentioning

confidence: 99%

Insight on water remediation application using magnetic nanomaterials and biosorbents

Maksoud

Elgarahy

Farrell

et al. 2020

Coordination Chemistry Reviews

220

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Adsorption to date is the most effective and utilized technology globally to remove several pollutants in wastewater. In this approach, many adsorbents have been synthesized, tested and used for the elimination and separation of the contaminants such as radionuclides, heavy metals, dyes and pharmaceutical compounds both at lab and industrial scale. However, there are many challenges to adsorption processes such as reducing the high cost, through means of separation of suspending adsorbents to be used again, as well as the ease to synthesize. Two methods that have shown promising results and gained significant interest is that of magnetic nanomaterials and biosorbents due to their effective, safe, eco-friendly, low cost and low-energy intensive material properties. Magnetic nanomaterials act as efficient adsorbents due to their ease of removal of contaminants from wastewater using an applied magnetic field but also their advantageous surface charge and redox activity characteristics. On the other hand, biosorbents have a synergistic effect with their efficient adsorption capacity to remove contaminants, high abundance and participation in waste minimization, helping alleviate ecological and environmental problems. This review highlights, discusses and reports on the state-of-the-art of these two promising routes to adsorption and provides indications as to what are the optimum materials for utilization and insight into their efficiency, reusability and practicality for the removal of pollutants from wastewater streams. Some of the main material focuses are zero-valent iron, iron oxides, spinel ferrites, natural and waste-based biosorbents.

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Synthesis and application of graphene oxide aerogel as an adsorbent for removal of dyes from water

Cited by 79 publications

References 18 publications

Kinetic modeling of ZnO‐rGO catalyzed degradation of methylene blue

Kinetic modeling of ZnO‐rGO catalyzed degradation of methylene blue

Synthesis of furfural from sugarcane bagasse by hydrolysis method using magnetic sulfonated graphene oxide catalyst

Insight on water remediation application using magnetic nanomaterials and biosorbents

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