Adsorption of methylene blue in water by reduced graphene oxide: Effect of functional groups

Chen, Lijuan; Yang, Jingjing; Zeng, Xiaopeng; Zhang, Lizhen; Yuan, Wenxia

doi:10.1166/mex.2013.1130

Cited by 37 publications

(20 citation statements)

References 24 publications

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“…In addition, competitive adsorption of various organic dyes on GO surface was also found [275][276][277]. After removing some functional groups, the partially reduced GO still kept strong affinity for MB adsorption owing to the C = O or C= N double bonds and C ÀC/C = C bonds induced conjugate interaction [278]. Na 2 S 2 O 4 in situ reduction of GO can convert carbonyl groups into hydroxyl groups, which acted as the key sites for a sharply adsorption enhancement of acridine orange from 1400 to 3300 mg g À g [279].…”

Section: Water Purificationmentioning

confidence: 81%

Graphene oxide: A promising nanomaterial for energy and environmental applications

et al. 2015

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Graphene oxide (GO), the functionalized graphene with oxygen-containing chemical groups, has recently attracted resurgent interests because of its superior properties such as large surface area, mechanical stability, tunable electrical and optical properties. Moreover, the surface functional groups of hydroxyl, epoxy and carboxyl make GO an excellent candidate in coordinating with other materials or molecules. Owing to the expanded structural diversity and improved overall properties, GO and its composites hold great promise for versatile applications of energy storage/conversion and environment protection, including hydrogen storage materials, photocatalyst for water splitting, removal of air pollutants and water purification, as well as electrode materials for various lithium batteries and supercapacitors. In this review, we present an overview on the current successes, as well as the challenges, of the GO-based materials for energy and environmental applications.

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Section: Water Purificationmentioning

confidence: 81%

Graphene oxide: A promising nanomaterial for energy and environmental applications

et al. 2015

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“…In contrast, this diffraction was dramatically reduced in the N‐RGO/N‐CNT hybrid electrode (Figure f), because the restacking of N‐RGO planes was inhibited by the inserted N‐CNT layer, which also increased the SSA of the composite material. Finally, the ratio of CNTs in the hybrid electrodes was varied to maximize SSA (measured by the methylene blue (MB) adsorption method (Figure S9, Supporting Information), and the Brunauer–Emmett–Teller (BET) method was also used to confirm the maximum SSA (Figure S10, Supporting Information)) . The electrode with N‐RGO:N‐CNT volume ratio of 1:1 demonstrated the highest SSA value of 717 m 2 g −1 by MB adsorption method, and 993 m 2 g −1 by BET method, as shown in Figure g, Figure S10 (Supporting Information), and Table (detailed comparison of MB adsorption and BET methods in the Supporting information).…”

Section: Compositions From Elemental Analysis (Ea) Specific Surface mentioning

confidence: 99%

Carbon–Heteroatom Bond Formation by an Ultrasonic Chemical Reaction for Energy Storage Systems

et al. 2017

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The direct formation of CN and CO bonds from inert gases is essential for chemical/biological processes and energy storage systems. However, its application to carbon nanomaterials for improved energy storage remains technologically challenging. A simple and very fast method to form CN and CO bonds in reduced graphene oxide (RGO) and carbon nanotubes (CNTs) by an ultrasonic chemical reaction is described. Electrodes of nitrogen- or oxygen-doped RGO (N-RGO or O-RGO, respectively) are fabricated via the fixation between N or O carrier gas molecules and ultrasonically activated RGO. The materials exhibit much higher capacitance after doping (133, 284, and 74 F g for O-RGO, N-RGO, and RGO, respectively). Furthermore, the doped 2D RGO and 1D CNT materials are prepared by layer-by-layer deposition using ultrasonic spray to form 3D porous electrodes. These electrodes demonstrate very high specific capacitances (62.8 mF cm and 621 F g at 10 mV s for N-RGO/N-CNT at 1:1, v/v), high cycling stability, and structural flexibility.

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“…Although, there are various materials such as metal oxides, porous materials, zeolites etc. which have been extensively studied and reported for removal of organic pollutant from water through photocatalytic process . However, these materials suffer lack of multifunctional character .…”

Section: Figurementioning

confidence: 99%

A Green Route Strategy for the Synthesis of Multifunctional Polymer Nanocomposites for Environmental Sustainability

et al. 2019

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Herein, one‐step green strategy is demonstrated for the synthesis of multifunctional polymer nanocomposite material using eco‐friendly thiol‐enephotopolymerization reaction at room temperature without use of any crosslinking agents. The greener route of thiol‐ene click reaction results in the formation of extremely high functional groups incorporated crosslinked surface as the thiol groups are reacted with each double bond in the nanograpite network, which is difficult to obtain by any other conventional method. In an attempt to encounter with environmental issues, this facile nanocomposite material can not only detect organic vapor in air but also degrades organic pollutant and microorganisms in water. The response time obtained by thiol‐ene functionalized nanocomposite (TE‐f‐NC) material is recorded as 6 seconds and the recovery is not more than 60 seconds towards formaldehyde vapors. The TE‐f‐NCs for detection of formaldehyde vapor will make a value‐added ultimate product and their commercialization will directly benefit to the society. Moreover, the photocatalytic activity of the obtained TE‐f‐NC material for the degradation of methyl blue (MB) under UV irradiation source was investigated, and found more than 50% of the initial concentration of MB dye degraded within first 3 min using TE‐f‐NC (0.6%) polymer nanocomposite. Along with photocatalytic activity, It is worth pointing out that the hybrid material can be readily used for antimicrobial activity toward various pathogenic microbes depicting the growth inhibition of microorganism by disrupting the cell walls.

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Adsorption of methylene blue in water by reduced graphene oxide: Effect of functional groups

Cited by 37 publications

References 24 publications

Graphene oxide: A promising nanomaterial for energy and environmental applications

Graphene oxide: A promising nanomaterial for energy and environmental applications

Carbon–Heteroatom Bond Formation by an Ultrasonic Chemical Reaction for Energy Storage Systems

A Green Route Strategy for the Synthesis of Multifunctional Polymer Nanocomposites for Environmental Sustainability

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