Biomass‐Derived Lignocellulosic Graphene Composite: Novel Approach for Removal of Oil and Organic Solvent

Kulal, Dnyaneshwar K.; Khose, Rahul V.; Pethsangave, Dattatray A.; Wadekar, Pravin H.

doi:10.1002/slct.201900115

Cited by 34 publications

(18 citation statements)

References 42 publications

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“…According to XPS analysis, the peak at 284, 400, 532, and 710 eV was showed the presence of C, N, O, and Fe 2p (Figure a XPS survey spectra) respectively. The as prepared GO contained a low C/O ratio of 2.02, which gives two observed peaks at 282.5 and 530.4 eV it indicates that C1s and O1s spectrum respectively (Figure a) . The G@PANI‐Fe 3 O 4 and G@PPy‐Fe 3 O 4 (Figure a) was showed a less C/O ratio of ∼1.92 and ∼1.87 respectively, in contrast to that of GO, which corresponds to the increased oxygen content in the nanocomposite.…”

Section: Resultsmentioning

confidence: 56%

One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation

et al. 2020

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We have developed a facile and efficient one-pot synthesis of nanocomposites of magnetic separable Graphene Polyaniline-Ferrite (G@PANI-Fe 3 O 4 ) and Graphene Polypyrrole-Ferrite (G@PPy-Fe 3 O 4 ) for the use of photocatalytic dye degradation of pollutants. This is the first attempt to synthesize PANI-Fe 3 O 4 and PPy-Fe 3 O 4 on graphene surface by a simple hydrothermal step, where PANI and PPy constructed nanocomposites with graphene and ferrite nanoparticles. The nitrogen-containing functional groups of PANI and PPy have provided more active sites on functionalized G@PANI-Fe 3 O 4 and G@PPy-Fe 3 O 4 nanocomposites for enhanced dye degradation capacity. The photocatalytic activity of as-prepared nanocomposites was investigated by the degradation of direct red 23. The effective degradation of direct red 23 up to 95.44% and 94.98% was observed by using the dose of 1 g/L G@PANI-Fe 3 O 4 and G@PPy-Fe 3 O 4 nanocomposite respectively, at pH 4 and contact time within 10 min only. The degradation capacity of G@PANI-Fe 3 O 4 and G@PPy-Fe 3 O 4 nanocomposite was superior in comparison with reported material and could be recycled at least 10 cycles. As-prepared nanocomposites were well characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Vibrating Sample Magnetometer (VSM) and Scanning Electron Microscope (SEM). The results demonstrated that the magnetically separable G@PANI-Fe 3 O 4 and G@PPy-Fe 3 O 4 nanocomposites are acting as an effective catalyst for dye degradation, which has effective recyclability property. The efficient dye degradation capacity of as-prepared nanomaterials could provide an innovative platform for different applications including the control of water pollution.

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Section: Resultsmentioning

confidence: 56%

One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation

et al. 2020

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“…In the FTIR spectrum of GO, broadband was observed at 3321 cm −1 , indicated O–H bond stretching due to hydroxyl functionality and moisture trapping . The sharp observed peak around 1724 cm −1 , attributable to the presence of carbonyl groups in GO structure . The peak around 1610 cm −1 mainly due to C=C stretching vibration of aromatic conjugated carbons .…”

Section: Resultsmentioning

confidence: 82%

“…[34][35][36][37][38] The sharp observed peak around 1724 cm À 1 , attributable to the presence of carbonyl groups in GO structure. [39][40][41] The peak around 1610 cm À 1 mainly due to C=C stretching vibration of aromatic conjugated carbons. [37,39] The peaks near to 1410 cm À 1 , 1221 cm À 1 and 1048 cm À 1 are because of CÀ H bending, CÀ O-C peak and sp 3 CÀ O stretching.…”

Section: Resultsmentioning

confidence: 99%

One‐step Preparation of Conducting Polymer/Metal Oxide Doped RGO Trinary Composite for Supercapacitor Applications

2020

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A naive one-pot strategy developed to prepare high-performance trinary based material as an energy storage material for supercapacitor. Herein, we have systematically studied and established an effortless and proficient synthetic method to formulate reduced graphene oxide (rGO)/polyaniline (PANI)/ manganese dioxide (MnO 2) (RPM) trinary material in one-step without any additional oxidizing/polymerizing agent and acidic condition. The approach of "one arrow two targets" have employed to synthesize trinary based nanocomposite. For the first time, we have synthesized this trinary material in one step. Initially, in-situ synthesized carbonic acid was consumed as a reducing agent to reduce the graphene oxide (GO) as well as it provided acidic condition for the formation of MnO 2 and polymerization of aniline. Secondarily, MnO 2 particles synthesized from KMnO 4 precursor, which acted as an oxidizing agent to polymerize aniline in the presence of carbonic acid. The material reflected the electrical double layer capacitance as well as pseudocapacitance of RGO and PANI/MnO 2. The material exhibited the maximum specific capacitance, 592 F/g at 1 A/g current density corresponds to excessive specific energy and specific power 66.6 Wh/kg, 1800 W/kg, respectively. This familiar route of direct production of graphene with the synergism of PANI-MnO 2 on carbon can be useful for largescale fabrication of nano-carbon material for diverse applications including energy storage application.

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“…When temperature was reached at 800°C, the weight loss of about 70 to 75 % was observed due to thermal decay of the carbon skeleton. [46,47] TGA of G@SiO 2 -AR ( Figure 2) and SiO 2 @AR ( Figure S2) shows a minor weight loss was observed at both the stages as compared to the GO. At 600°C, the total weight loss of about 60-65 % was observed for both the samples.…”

Section: Resultsmentioning

confidence: 98%

Remediation of Toxic Dye Pollutants by Using Graphene‐Based Adsorbents

2020

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In this article, we report a facile strategy for the synthesis of G@SiO2‐AR by using silica nanoparticles, which are coated with graphene and alkyd resin. During the synthesis of G@SiO2‐AR, the silica particles have been prepared in situ by hydrolysis of tetraethyl ortho silicate (TEOS). The G@SiO2‐AR has been employed to remove the methylene blue (MB) from aqueous solution. G@SiO2‐AR has a strong affinity to adsorb MB as MB is a cationic dye and it is strongly attracted by anions induced by deprotonation of acid functionality on GO. The detailed adsorption characteristics of G@SiO2‐AR, such as adsorption kinetic and adsorption isotherm has been investigated. The efficiency of dye adsorption on a G@SiO2‐AR has been investigated under various parameters such as contact time, temperature, and pH. The adsorption experiment has been carried out by keeping the constant adsorbent dose in 50 mL of 50 ppm dye solution with varying time intervals such as 5, 10, 15, 20 and 25 min at room temperature. We got better results at 20 min and the dye removal efficiency of G@SiO2‐AR and SiO2@AR is 95.08 % and 87.32 % respectively at room temperature. Also, we carried out the same experiment at different temperatures ranging from 298, 308 and 318 K, out of which the highest adsorption efficiency of above‐mentioned adsorbents has been observed at 318 K up to 99.72 % and 93.16 % respectively. Kinetic data has been shown that the adsorption phenomenon follows the pseudo‐second order kinetic model, while adsorption isotherm follows the Langmuir adsorption isotherm.

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Biomass‐Derived Lignocellulosic Graphene Composite: Novel Approach for Removal of Oil and Organic Solvent

Cited by 34 publications

References 42 publications

One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation

One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation

One‐step Preparation of Conducting Polymer/Metal Oxide Doped RGO Trinary Composite for Supercapacitor Applications

Remediation of Toxic Dye Pollutants by Using Graphene‐Based Adsorbents

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