• flocculation performance and mechanism of graphene

    Flocculation performance and mechanism of graphene

    2013-06-01· The application of nanomaterials in water treatment plants has attracted significant attention recently. This study investigates the possibility of using graphene oxide (GO) as a novel flocculant to remove contaminants with different surface charges from water, including two particulate ones (kaolin and hematite) and two soluble ones (humic acid (HA) and cationic light yellow 7GL dye (7GL)).

  • flocculation performance and mechanism of graphene

    Flocculation performance and mechanism of graphene

    Flocculation performance and mechanism of graphene oxide for removal of various contaminants from water

  • flocculation performance and mechanism of graphene

    Flocculation performance and mechanism of graphene

    2013-06-01· Graphene oxide (GO) is employed as a novel flocculant for the first time. • GO shows good flocculation performance in various kinds of synthetic wastewater. • GO can successfully remove various contaminants by sweeping flocculation effect. • Fractal theory was applied to explore the flocculation mechanisms of GO.

  • flocculation performance and mechanism of graphene

    Flocculation performance and mechanism of graphene

    2013-06-01· Read "Flocculation performance and mechanism of graphene oxide for removal of various contaminants from water, Water Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • mechanism of graphene oxide formation acs nano

    Mechanism of Graphene Oxide Formation ACS Nano

    Despite intensive research, the mechanism of graphene oxide (GO) formation remains unclear. The role of interfacial interactions between solid graphite and the liquid reaction medium, and transport of the oxidizing agent into the graphite, has not been well-addressed. In this work, we show that formation of GO from graphite constitutes three distinct independent steps.

  • understanding flocculation mechanism of graphene oxide

    Understanding flocculation mechanism of graphene oxide

    2015-11-25· Flocculation treatment processes play an important role in water and wastewater pretreatment. Here we investigate experimentally and theoretically the possibility of using graphene oxide (GO) as a flocculant to remove methylene blue (MB) from water. Experimental results show that GO can remove almost all MB from aqueous solutions at its optimal dosages and molecular dynamics

  • coagulation effectiveness of graphene oxide for the

    Coagulation effectiveness of graphene oxide for the

    The XRD patterns of graphite and GO are shown in Fig. 1A. Graphite showed a sharp reflection peak at 26.52° with an interlayer spacing of approximately 0.335 nm. This peak completely vanished in GO, and a new peak appeared at 2θ = 10.92°, with an interlayer spacing of approximately 0.809 nm, that is a characteristic of GO.

  • the effect of graphene oxide on the slime coatings

    The effect of graphene oxide on the slime coatings

    2017-06-05· This paper studied the effects of graphene oxide (GO) on the slime coatings of serpentine in the flotation of pentlandite. The flotation results showed that the flotation recovery of pentlandite was improved with the addition of GO, compared with carboxymethyl cellulose (CMC). The possible mechanisms of the improved flotation recovery were

  • cationic starch-grafted-cationic polyacrylamide based

    Cationic starch-grafted-cationic polyacrylamide based

    In this study, a novel, highly efficient and environmentally friendly ternary composites flocculant, namely, cationic starch-grafted-cationic polyacrylamide/graphene oxide (CS-g-CPAM/GO), was synthesized by ammonium persulfate initiation polymerization and condensation reaction.

  • cross‐linked double network graphene oxide/polymer

    Cross‐Linked Double Network Graphene Oxide/Polymer

    In this study, we introduced a graphene oxide (GO)/polymer‐based hybrid coagulant/flocculant by forming double‐network hydrogel through bioinspired Ca 2+ crosslinking during the coagulation‐flocculation process (Figure 1a). 17 When applied to water treatment, GO/polymer‐based hybrid coagulant could precipitate multiple pollutants (e.g

  • understanding flocculation mechanism of graphene

    Understanding flocculation mechanism of graphene

    Flocculation treatment processes play an important role in water and wastewater pretreatment. Here we investigate experimentally and theoretically the possibility of using graphene oxide (GO) as a

  • a highly efficient flocculant for graphene oxide

    A Highly Efficient Flocculant for Graphene Oxide

    Request PDF A Highly Efficient Flocculant for Graphene Oxide Recycling and its Applications Graphene-related materials, such as graphene oxide (GO), have been used in

  • understanding flocculation mechanism of graphene

    Understanding flocculation mechanism of graphene

    Information about the open-access article 'Understanding flocculation mechanism of graphene oxide for organic dyes from water: Experimental and molecular dynamics simulation' in DOAJ. DOAJ is an online directory that indexes and provides access to quality open access, peer-reviewed journals.

  • selective reduction mechanism of graphene oxide

    Selective Reduction Mechanism of Graphene Oxide

    The reduction of graphene oxide (GO) has been investigated for the mass production of graphene used in practical applications. Different reduction processes produce different properties in graphene, affecting the performance of the final materials or devices. Therefore, an understanding of the mechanisms of GO reduction is important for

  • (pdf) cross‐linked double network graphene

    (PDF) Cross‐Linked Double Network Graphene

    Cross‐Linked Double Network Graphene Oxide/Polymer Composites for Efficient Coagulation‐Flocculation Article (PDF Available) · October 2019

  • understanding flocculation mechanism of graphene

    Understanding flocculation mechanism of graphene

    Flocculation treatment processes play an important role in water and wastewater pretreatment. Here we investigate experimentally and theoretically the possibility of using graphene oxide (GO) as a flocculant to remove methylene blue (MB) from water. Experimental results show that GO can remove almost all MB from aqueous solutions at its optimal dosages and molecular dynamics simulations

  • a highly efficient flocculant for graphene oxide recycling

    A highly efficient flocculant for graphene oxide recycling

    Yang Z, Yan H, Yang H, Li H, Li A and Cheng R 2013 Flocculation performance and mechanism of graphene oxide for removal of various contaminants from

  • cross‐linked double network graphene oxide/polymer

    Cross‐Linked Double Network Graphene Oxide/Polymer

    flocculation-sedimentation process of water treatment. In this work, inspired by the mineralization in nature, a graphene oxide/polymer-based hybrid coagulant/flocculant that precipitates large-scale, multicomponent (e.g., dyes, heavy metal ions, and nanoparticles) and complex pollutants simultaneously

  • incorporating graphene oxide into lime solution: a study

    Incorporating graphene oxide into lime solution: A study

    In addition, we discovered that, compared to -OH group, the -COOH group and the long chain of polycarboxylate-based superplasticizer were more effective in delaying the flocculation of graphene oxide. Finally, we proposed a dispersion mechanism of polycarboxylate-based superplasticizer. The study provides inspiration for the design of graphene oxide-doped cement materials.

  • effect of the oxidation degree of graphene oxides

    Effect of the Oxidation Degree of Graphene Oxides

    Request PDF On Oct 29, 2018, Camilo Zolezzi and others published Effect of the Oxidation Degree of Graphene Oxides on their Adsorption, Flocculation, and Antibacterial Behavior Find, read and

  • removal of ciprofloxacin antibiotic with nano graphene

    Removal of ciprofloxacin antibiotic with nano graphene

    References. J. Kagle, A.W. Porter, R.W. Murdoch, G. Rivera-Cancel, A.G. Hay, Biodegradation of pharmaceutical and personal care products, Adv. Appl. Microbiol., 67

  • aggregation, adsorption, and morphological

    Aggregation, Adsorption, and Morphological

    The colloidal behavior of graphene oxide (GO) has been extensively studied in the presence of common environmental cations, but the aggregation, adsorption, and morphological transformation of GO under heavy metal ions have not been investigated. We observed that heavy metal cations (Cr3+, Pb2+, Cu2+, Cd2+, Ag+) destabilized GO suspension more aggressively than common cations (Ca2+, Mg2+, Na+

  • high performance graphene oxide based rubber

    High Performance Graphene Oxide Based Rubber

    2013-08-26· In this paper, graphene oxide/styrene-butadiene rubber (GO/SBR) composites with complete exfoliation of GO sheets were prepared by aqueous-phase mixing of

  • incorporating graphene oxide into lime solution: a study

    Incorporating graphene oxide into lime solution: A study

    In addition, we discovered that, compared to -OH group, the -COOH group and the long chain of polycarboxylate-based superplasticizer were more effective in delaying the flocculation of graphene oxide. Finally, we proposed a dispersion mechanism of polycarboxylate-based superplasticizer. The study provides inspiration for the design of graphene oxide-doped cement materials.

  • property improvement of cement emulsified asphalt paste

    Property Improvement of Cement Emulsified Asphalt Paste

    Cement emulsified asphalt paste (CEAP) is widely used as a construction and building material by combining the advantages of cement rigidity and asphalt flexibility. However, the properties of CEAP can be evidently reduced due to the addition of emulsified asphalt. In this work, graphene oxide (GO) was prepared by the Hummers method and was innovatively used to improve the workability and

  • synthesis of a li−mn-oxide with disordered layer stacking

    Synthesis of a Li−Mn-oxide with Disordered Layer Stacking

    A new type of layered Li−Mn-oxide with heavy stacking faults has been synthesized via flocculation of delaminated MnO2 nanosheets with Li ions. Flocculated products were characterized by powder X-ray diffraction, thermal analysis, scanning electron microscopy, transmission electron microscopy, chemical analysis, N2 adsorption, and electrochemical measurements. Chemical analysis and X-ray

  • stable cose2/carbon nanodice@reduced graphene oxide

    Stable CoSe2/carbon [email protected] graphene oxide

    Compared to graphene-based cathodes, metal dichalcogenide cathodes can potentially provide RAIBs with higher capacities. However, metal dichalcogenides suffer from poor cycling performance, hindering the further development of high-capacity RAIBs. Thus, to further improve the performance of RAIBs, it is imperative to gain a deep understanding of the mechanisms behind the energy-storage and

  • cn104876204b a kind of method of modifying

    CN104876204B A kind of method of modifying

    The invention discloses a kind of method of modifying of graphene oxide, the method is by modified to surface of graphene oxide so that graphene oxide can be dispersed in cement slurry, mainly include the graphene oxide dispersion being 0.2 ~ 5 mg/ml by concentration to be placed in 60 ~ 80 DEG C of water-baths, Deca quality is the polycarboxylic acid series high efficiency water reducing

  • antibacterial activity of graphite, graphite oxide

    Antibacterial Activity of Graphite, Graphite Oxide

    Health and environmental impacts of graphene-based materials need to be thoroughly evaluated before their potential applications. Graphene has strong cytotoxicity toward bacteria. To better understand its antimicrobial mechanism, we compared the antibacterial activity of four types of graphene-based materials (graphite (Gt), graphite oxide (GtO), graphene oxide (GO), and reduced graphene oxide

  • graphene oxide quantum dots as novel nanozymes

    Graphene Oxide Quantum Dots as Novel Nanozymes

    2017-03-21· Alcohol overconsumption as a worldwide issue results in alcoholic liver disease (ALD), such as steatosis, alcoholic hepatitis, and cirrhosis. The treatment of ALD has been widely investigated but remains challenging. In this work, the protective effects of graphene oxide quantum dots (GOQDs) as novel nanozymes against alcohol overconsumption are discovered, and the specific mechanisms

  • antibacterial activity of graphite, graphite oxide

    Antibacterial Activity of Graphite, Graphite Oxide

    Health and environmental impacts of graphene-based materials need to be thoroughly evaluated before their potential applications. Graphene has strong cytotoxicity toward bacteria. To better understand its antimicrobial mechanism, we compared the antibacterial activity of four types of graphene-based materials (graphite (Gt), graphite oxide (GtO), graphene oxide (GO), and reduced graphene oxide

  • graphite oxide

    Graphite oxide

    Graphite oxide, formerly called graphitic oxide or graphitic acid, is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers.The maximally oxidized bulk product is a yellow solid with C:O ratio between 2.1 and 2.9, that retains the layer structure of graphite but with a much larger and irregular spacing.

  • preparation and application of water-in-oil emulsions

    Preparation and Application of Water-in-Oil Emulsions

    Owing to its water dispersibility, graphene oxide (GO), as a derivative of graphene, has many applications such as transparent conductors, sensors, polymer composites and energy storage [1,2,3,4,5,6,7]. GO is typically synthesized by chemical oxidation and exfoliation of graphite powders using strong oxidizing agents.

  • graphene oxide–chitosan composite material

    Graphene Oxide–Chitosan Composite Material

    2018-10-31· Graphene oxide (GO) was cross-linked with chitosan to yield a composite (GO-LCTS) with variable morphology, enhanced surface area, and notably high methylene blue (MB) adsorption capacity. The materials were structurally characterized using thermogravimetric

  • preparation and retention mechanism study of graphene

    Preparation and retention mechanism study of graphene

    2013-09-13· 1. J Chromatogr A. 2013 Sep 13;1307:135-43. doi: 10.1016/j.chroma.2013.07.106. Epub 2013 Aug 4. Preparation and retention mechanism study of graphene and graphene oxide bonded silica microspheres as stationary phases for high performance liquid chromatography.

  • high performance graphene oxide based rubber

    High Performance Graphene Oxide Based Rubber

    2013-08-26· In this paper, graphene oxide/styrene-butadiene rubber (GO/SBR) composites with complete exfoliation of GO sheets were prepared by aqueous-phase mixing of GO colloid with SBR latex and a small loading of butadiene-styrene-vinyl-pyridine

  • property improvement of cement emulsified asphalt paste

    Property Improvement of Cement Emulsified Asphalt Paste

    Cement emulsified asphalt paste (CEAP) is widely used as a construction and building material by combining the advantages of cement rigidity and asphalt flexibility. However, the properties of CEAP can be evidently reduced due to the addition of emulsified asphalt. In this work, graphene oxide (GO) was prepared by the Hummers method and was innovatively used to improve the workability and

  • 2,3,6-tricarboxylate cellulose as a fully biodegradable

    2,3,6-tricarboxylate cellulose as a fully biodegradable

    Full Article. 2,3,6-Tricarboxylate Cellulose as a Fully Biodegradable Flocculant: Efficient Synthesis and Flocculation Performance. Kexin Chen, a Weijun Lv, b, * Wei Chen, a Yifeng Wang, c Yong Zhang, a, * Xiumei Zhang, a and Juming Yao a Cellulose-based flocculants have shown excellent performance for wastewater flocculation, being low-cost and eco-friendly.

  • processes free full-text flocculation of a high

    Processes Free Full-Text Flocculation of a High

    The flocculation performance of flocculant PAMD with a high cationic degree was investigated in the purification of high-turbidity water. The flocculation mechanism was correspondingly studied and summarized based on Fourier transform-infrared (FTIR) analysis. Finally, the results of an experimental simulation using the response surface method

  • enhancement mechanisms of graphene in nano-58s

    Enhancement mechanisms of graphene in nano-58S

    Enhancement mechanisms of graphene in nano-58S bioactive glass scaffold: mechanical and biological performance Chengde Gao,1 Tingting Liu,1 Cijun Shuai,a, 1, 2 and Shuping Peng 3, 4 1 State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, P. R. China

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