A Facile Synthesis of Hexagonal Spinel λ-MnO2 Ion-Sieves for Highly Selective Li+ Adsorption

Yang, Fan; Chen, Si‐Chong; Shi, Chentao; Xue, Feng; Zhang, Xiaoxian; Ju, Shengui; Xing, Weihong

doi:10.3390/pr6050059

Cited by 37 publications

(12 citation statements)

References 28 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recent research contains various methods for reducing the impact of azo dyes on public health and environmental quality. Common classes of techniques are physical-based (adsorption, ion exchange, membrane filtration [2][3][4][5][6]), chemical-based (ozonation, electrochemical degradation, advanced oxidation processes), and biological-based (biodegradation, bioaccumulation, biosorption using fungi, algae, yeast, and bacteria) [7][8][9][10]. Due to the many drawbacks presented in conventional wastewater treatment technologies (high operation costs, energy consumption, reduced efficiency due to the chemical stability of dyes and/or the complexity of their degradation), the recent trend is to combine the techniques for sustainability, as oxidation/catalysis or adsorption/catalysis, etc.…”

Section: Introductionmentioning

confidence: 99%

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

Saroyan¹,

Kyzas

Deliyanni

2019

Processes

View full text Add to dashboard Cite

Graphene oxide (GO) was used as a support for manganese oxide (MnO2) for the preparation of a nanocomposite catalyst for the degradation of an azo dye, Reactive Black 5 (RB5). The nanocomposite was characterized for the structure by XRD, for the morphology with SEM, and for the surface chemistry with FTIR and potentiometric titration measurements. The GO-MnO2 nanocomposite presented a high catalytic activity for the degradation/oxidation of RB5 at ambient conditions, which was higher than that of the pure MnO2 and could be attributed to the beneficial contribution of the manganese oxide and the graphene oxide.

show abstract

Section: Introductionmentioning

confidence: 99%

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

Saroyan¹,

Kyzas

Deliyanni

2019

Processes

View full text Add to dashboard Cite

show abstract

“…An important question, which needs to be clearly answered, is: why apply adsorption for the decontamination of effluents? Recently, adsorption has been widely applied on wastewater decontamination [5][6][7][8][9], mainly because of its removal efficiency from dilute solutions. Usual materials like activated carbon [10], chitosan [11], zeolite, and clay [12] are still in high demand due to their great adsorption capacity, but these are relatively costly.…”

Section: Introductionmentioning

confidence: 99%

Basic Dye Removal with Sorption onto Low-Cost Natural Textile Fibers

2018

View full text Add to dashboard Cite

Over the last several years, the trend of researchers has been to use some very low-cost materials as adsorbents. For this purpose, some already commercially used bast fibers were selected as potential adsorbent materials to remove basic dye from synthetic effluents. The adsorption of basic yellow 37 dye was studied using three different bast fibers under the names of flax, ramie, and kenaf. Their morphological structure was examined using several techniques such as scanning electron microscopy (SEM), crystallinity, X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), as well as those characterizations being a useful tool to propose a mechanism of the whole adsorption process. The adsorption evaluation was achieved by studying at first the pH (12) and temperature effects (25–55 °C). Two isotherm models (Langmuir and Freundlich) were also applied to the experimental equilibrium data revealing the superiority of ramie fibers (327, 435, and 460 mg·g−1 (25 °C) for kenaf, flax, and ramie, respectively). The crucial adsorbent’s dosage was found to be 0.1 g per litre for all fibers, while the completed desorption study (eluant’s pH and reuse cycles) also confirmed the strong potential of these kinds of fibers as adsorbents. The latter may be attributed to the cellulosic content.

show abstract

“…selectivity and desorbed by some solvents, thereby separating Li ? from other coexisting ions [53]. The key to this method is identifying excellent adsorption materials with high Li ?…”

Section: Adsorption Extraction Materialsmentioning

confidence: 99%

Materials for lithium recovery from salt lake brine

et al. 2020

View full text Add to dashboard Cite

Rapid developments in the electric industry have promoted an increasing demand for lithium resources. Lithium in salt lake brines has emerged as the main source for industrial lithium extraction, owing to its low cost and extensive reserves. The effective separation of Mg 2? and Li ? is critical to achieving high recovery efficiency and purity of the final lithium product. This paper summarizes Mg 2? /Li ? separation materials and methods in the field of lithium recovery from salt lake brines. The review begins with an introduction to the global distribution and demand for lithium resources, followed by a description of the materials used in various separation techniques, including precipitation, adsorption, solvent extraction, nanofiltration membrane, electrodialysis, and electrochemical methods. A comparison, analysis, and outlook of such methods are comprehensively discussed in terms of principles, mechanisms, synthesis/operation, development, and industrial applications. We conclude with a presentation of challenges and insights into the future directions of lithium extraction from salt lake brines. A combination of the advantages of various materials is the most logical step toward developing novel methods for extracting lithium from brines with high separation selectivity, stability, low cost, and environmentally friendly characteristics.

show abstract

A Facile Synthesis of Hexagonal Spinel λ-MnO2 Ion-Sieves for Highly Selective Li+ Adsorption

Cited by 37 publications

References 28 publications

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

Basic Dye Removal with Sorption onto Low-Cost Natural Textile Fibers

Materials for lithium recovery from salt lake brine

Contact Info

Product

Resources

About