Lithium adsorption from natural brine using surface-modified manganese oxide adsorbents

Natural clay (NC) and its surface modified with manganese oxide (MnO-NC) was assessed for removal of Cd (II) ion by batch adsorptive process. The surface modification of NC was chemically prepared with manganese chloride in basic solution by simple procedure, resulting in larger surface area than raw material by about 10-times. FT-IR spectra and SEM photograph showed the unique characteristic of MnO-NC after chemically surface modification with MnO2 particles successfully set down onto the NC surface. Under optimum conditions as a function of solution pH of 6.0, adsorbent dose of 5 g/L, contact time of 15 min and initial cadmium concentration of 100 mg/L, the adsorption capacity reach to 30.6 mg/g. By comparing with NC, MnO-NC provides higher adsorptive capability than the one by about 30-times. Based on isotherm estimation, the Langmuir adsorption isotherm showed more suitable for both adsorbents with the best correlation coefficient (r2>0.99) than the Freundlich isotherm. The adsorptive kinetics of Cd (II) onto NC and MnO-NC followed the pseudo-second-order.

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Electrochemical Properties of Manganese Oxide Surface-Modified Activated Carbon Electrode Materials

Acta Physico-Chimica Sinica ◽

10.3866/pku.whxb20090206 ◽

2009 ◽

Vol 25 (02) ◽

pp. 229-236 ◽

Cited By ~ 1

Author(s):

GAO Qiang ◽

◽

LIU Ya-Fei ◽

HU Zhong-Hua ◽

ZHENG Xiang-Wei ◽

...

Keyword(s):

Activated Carbon ◽

Electrochemical Properties ◽

Manganese Oxide ◽

Electrode Materials ◽

Oxide Surface ◽

Carbon Electrode ◽

Modified Activated Carbon ◽

Surface Modified

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Aqueous-processable surface modified graphite with manganese oxide for lithium-ion battery anode

Applied Surface Science ◽

10.1016/j.apsusc.2020.146720 ◽

2020 ◽

Vol 526 ◽

pp. 146720

Author(s):

Sangkyu Lee ◽

Jung Woo Lee ◽

Wonsik Eom ◽

Yeon Wook Jung ◽

Tae Hee Han

Keyword(s):

Manganese Oxide ◽

Lithium Ion Battery ◽

Lithium Ion ◽

Surface Modified ◽

Battery Anode

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Analytical Electron Microscopy of Surface-Modified Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100118291 ◽

1985 ◽

Vol 43 ◽

pp. 276-279

Author(s):

P. S. Sklad

Keyword(s):

Electron Microscopy ◽

Analytical Electron Microscopy ◽

Theoretical Models ◽

Ceramic Materials ◽

Solute Concentration ◽

Second Phase ◽

Analytical Electron ◽

Implantation Techniques ◽

Lattice Damage ◽

Surface Modified

Over the past several years, it has become increasingly evident that materials for proposed advanced energy systems will be required to operate at high temperatures and in aggressive environments. These constraints make structural ceramics attractive materials for these systems. However it is well known that the condition of the specimen surface of ceramic materials is often critical in controlling properties such as fracture toughness, oxidation resistance, and wear resistance. Ion implantation techniques offer the potential of overcoming some of the surface related limitations.While the effects of implantation on surface sensitive properties may be measured indpendently, it is important to understand the microstructural evolution leading to these changes. Analytical electron microscopy provides a useful tool for characterizing the microstructures produced in terms of solute concentration profiles, second phase formation, lattice damage, crystallinity of the implanted layer, and annealing behavior. Such analyses allow correlations to be made with theoretical models, property measurements, and results of complimentary techniques.

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