Removal of lead(II) from aqueous solution by adsorption onto manganese oxide-coated carbon nanotubes

Wang, Shuguang; Gong, Wen-Xin; Liu, Xianwei; Yao, Yawei; Gao, Baoyu

doi:10.1016/j.seppur.2007.07.006

Cited by 303 publications

(101 citation statements)

References 30 publications

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“…This observation confirms that CNTs were coated with MnO 2 nanoparticles successfully. This result agrees with that reported by Wang et al [44] and Richter et al [45]. They reported that the MnO 2 on CNTs and MnO 2 -coated zeolite, respectively is an amorphous phase.…”

Section: X-ray Diffractionsupporting

confidence: 93%

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

et al. 2016

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CNTs/MnO 2 composite was synthesized by a coprecipitation method after preparation of carbon nanotubes (CNTs) using a chemical oxidation method and was characterized using Fourier transformer infrared (FT-IR), X-ray diffraction (XRD) and scanning electron microscope (SEM). The synthesized CNTs/MnO 2 composite was used as a sorbent for the removal of some radionuclides ( 60 Co and 65 Zn-radioisotopes) and Cd (II) ions from aqueous solutions. Different parameters affecting the removal process including pH, contact time and metal ion concentration were investigated. Isotherm and kinetic models were studied. Adsorption data was interpreted in terms of both Freundlich and Langmuir isotherms and indicated that the CNTs/MnO 2 composite complied well with both Langmuir and Freundlich models for Zn and Cd(II) ions from loaded samples was studied using different eluents.

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Section: X-ray Diffractionsupporting

confidence: 93%

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

et al. 2016

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“…MnO 2 /carbon composite materials have also shown great adsorption ability for the removal of heavy metal ions from waste water [16,25,26] bent for many metal ions but also a promising electrode material for electrochemical supercapacitors. Recently, some researchers [11,27] synthesized MnO 2 /nanoporous carbon and MnO 2 /graphene composites and successfully used them as electrodes in electrosorptive desalination.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a manganese dioxide/carbon fiber electrode for electrosorptive removal of copper ions from water

Liu

Lan

et al. 2015

Journal of Colloid and Interface Science

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a b s t r a c tMnO 2 is an effective adsorbent for many metal ions and a promising electrode material for electrochemical supercapacitors. In this paper, we successfully combined the two functions through preparing a MnO 2 /carbon fiber (CF) composite as an electrosorptive electrode. The thin MnO 2 film was deposited onto CF by an anodic eletrodeposition method. The MnO 2 /CF electrodes had ideal pseudocapacitive behavior and high capacitive reversibility. The specific capacitance of the MnO 2 /CF electrode reached a maximum value of 387 F/g, which is quite competitive compared with literature values. At 0.8 V applied potential, the maximum Cu 2+ adsorption capacity of the MnO 2 /CF electrode was 172.88 mg/g, which is more than 2 times higher than common MnO 2 adsorbents without an electric field imposed. SEM images showed that MnO 2 nanoflowers with several ''petals'' were uniformly distributed on the CF surface. Enhancement of adsorption by the polarization potential and the unique microstructure of the deposited MnO 2 may be the source of the outstanding adsorption ability of the MnO 2 /CF electrode. The MnO 2 /CF electrode could be regenerated quickly by reversing the voltage. The deposition time of 1000 s was optimum for achieving maximum capacitance and Cu 2+ removal performance. The MnO 2 /CF composite electrosorptive electrode is a promising candidate for Cu 2+ removal from aqueous solution.

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“…Among these heavy metals, Pb 2+ , coming from battery manufacturing, ceramic and glass manufacturing, OPEN ACCESS metal planting and finishing, printing, and production of lead additives for gasoline, is known to have a severe toxic damage to neuronal system, kidneys, reproductive system, liver and brain [2,3]. Since lead does not degrade in environment like organic pollutants [4], the safe and effective disposal of wastewater containing Pb 2+ is always a challenge to industrialists and environmentalists [5].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Coconut Shell Carbons Prepared by KOH Activation for Removal of Lead(II) From Aqueous Solutions

et al. 2013

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Abstract:Removal of Pb 2+ from aqueous solutions using coconut shell carbons produced by KOH activation is performed in this paper. Morphology and pore structure characteristic of coconut shell carbons are analyzed by SEM and nitrogen adsorption techniques. Effects of adsorbent concentration, agitation time and initial ion concentration on the adsorption behavior are investigated, and adsorption isotherm and kinetics on coconut shell carbons are also studied. The results show that high weight ratio of KOH/sample is favorable to produce rich porous structure. The resultant coconut shell carbons with a high specific surface area of 1135 m 2 /g is obtained and demonstrates good adsorption potential on removal of Pb 2+ from aqueous solutions. Adsorption data fit well with Freundlich and Halsey isotherms. The kinetic studies indicate that adsorption behavior can be described by pseudo-second-order kinetic model, which also follows external diffusion and intra-particle diffusion in the adsorption process.

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Removal of lead(II) from aqueous solution by adsorption onto manganese oxide-coated carbon nanotubes

Cited by 303 publications

References 30 publications

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

Preparation of a manganese dioxide/carbon fiber electrode for electrosorptive removal of copper ions from water

Adsorption Studies of Coconut Shell Carbons Prepared by KOH Activation for Removal of Lead(II) From Aqueous Solutions

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Removal of lead(II) from aqueous solution by adsorption onto manganese oxide-coated carbon nanotubes

Cited by 303 publications

References 30 publications

Evaluation of CNTs/MnO2 composite for adsorption of 60Co(II), 65Zn(II) and Cd(II) ions from aqueous solutions

Evaluation of CNTs/MnO2 composite for adsorption of 60Co(II), 65Zn(II) and Cd(II) ions from aqueous solutions

Preparation of a manganese dioxide/carbon fiber electrode for electrosorptive removal of copper ions from water

Adsorption Studies of Coconut Shell Carbons Prepared by KOH Activation for Removal of Lead(II) From Aqueous Solutions

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Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions

Evaluation of CNTs/MnO₂ composite for adsorption of ⁶⁰Co(II), ⁶⁵Zn(II) and Cd(II) ions from aqueous solutions