Manganese dioxide/iron oxide/acid oxidized multi-walled carbon nanotube magnetic nanocomposite for enhanced hexavalent chromium removal

Luo, Chao; Zhang, Tian; Yang, Bo; Zhang, Li; Yan, Shan

doi:10.1016/j.cej.2013.08.084

Cited by 237 publications

(92 citation statements)

References 48 publications

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“…Tehrani et al activated MWCNTs with acid and observed functional groups using FTIR spectra obtained similar findings[24]. Luo et al decorated acid activated MWCNTs with Mn-Fe oxide nanoparticles and achieved comparable results[25]. Thus these results suggest that the Zn-Mn oxide was successfully loaded on the surface of FMWCNTs.The relative weight loss in percent (%) against increasing temperature (T) was analyzed by TGA (Figure 3).…”

supporting

confidence: 80%

Liquid phase oxidation of cinnamyl alcohol to cinnamaldehyde using multiwall carbon nanotubes decorated with zinc-manganese oxide nanoparticles

Sadiq

Saeed

Sadiq

et al. 2017

Applied Catalysis A: General

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supporting

confidence: 80%

Liquid phase oxidation of cinnamyl alcohol to cinnamaldehyde using multiwall carbon nanotubes decorated with zinc-manganese oxide nanoparticles

Sadiq

Saeed

Sadiq

et al. 2017

Applied Catalysis A: General

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“…Apart from being highly efficient in this purpose, Cr(VI) can be desorbed and the adsorbent may be regenerated by using an alkali. However, the efficiency of Cr(VI) adsorption efficiency reduces to 85% after five cycles of reuse of these nanotubes [128].…”

Section: Nanoadsorbents For Chromium Remediationmentioning

confidence: 99%

Removal of chromium from industrial effluents using nanotechnology: a review

Mitra

Sarkar

Sen

2017

Nanotechnol. Environ. Eng.

132

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The presence of chromium in industrial effluents has become a huge problem worldwide as hexavalent chromium is highly toxic to animals due to its ability to generate reactive oxygen species in cells. The trivalent state of chromium, on the other hand, is significantly less toxic and also serves as an essential element in trace amounts. When industries such as electroplating, tannery, dyeing and others release their effluents into water bodies, hexavalent chromium enters the food chain and, consequently, reaches humans in a biomagnified form. Many remediation processes for removal of hexavalent chromium have been researched and reviewed extensively. These include chemical reduction to trivalent chromium, solvent extraction, chelation and adsorption, among others. It has been generally concluded that adsorption (and/or subsequent reduction) of hexavalent chromium is the best method. However, relatively little is known about the potential of using nanoparticles as adsorbents for the removal of hexavalent chromium from industrial effluents. This method of nanoremediation is more effective than conventional remediation methods and is cost-effective for the industry in the long run. This article reviews the various remediation methods of hexavalent chromium, with emphasis on the field of nanoremediation.

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“…Afterwards, about 0.1 g of the treated MWCNT was dispersed into 160 ml of 0.1m kMnO 4 solution under vigorous stirring at 40 °C for 2 h and 20 ml MnSO 4 (0.5 M) solution was added dropwise on the above suspension with intensive stirring and then the reaction mixture was kept at 40 C° for 24 h. Then the suspension was filtered washed several times with deionized water and alcohol, and the precipitation were collected and dried in an oven under 100 °C about 12 h.…”

Section: Preparation Of Mno 2 /Mwcnt Nanocompositementioning

confidence: 99%

“…Although chromium (III) has use in so many industries like leather tanning, paints, glass manufacture and etc 3 . But the most significant point about chromium (III) is, it can be oxidized to Chromium (VI) that cause serious health risks 4,5 . Also admissible amount of chromium (III) in wastewater is 5mg/l 6 .…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Study of Cr+3 Ions Removal by “MnO2/MWCNT” Nanocomposite

Mohammadkhani¹,

Gholami²,

Aghaie³

2016

Orient. J. Chem

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In this research "MnO2/MWCNT" nanocomposite was prepared firstly and then it was used as an adsorbent for Cr +3 ions removal from aqueous solutions. Our results showed that the prepared nanocomposite from modified multi-wall carbon nanotube and MnO 2 has a good capacity for Cr +3 removal from aqueous solution. Morphology and Crystallinity of the modified MWCNT before and after deposition on MnO 2 were examined by SEM and XRD. In turn, the experimental results were examined according to the Langmuir, Freundlich and Temkin Isotherms and Freundlich isotherm represented our experimental results.

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Manganese dioxide/iron oxide/acid oxidized multi-walled carbon nanotube magnetic nanocomposite for enhanced hexavalent chromium removal

Cited by 237 publications

References 48 publications

Liquid phase oxidation of cinnamyl alcohol to cinnamaldehyde using multiwall carbon nanotubes decorated with zinc-manganese oxide nanoparticles

Liquid phase oxidation of cinnamyl alcohol to cinnamaldehyde using multiwall carbon nanotubes decorated with zinc-manganese oxide nanoparticles

Removal of chromium from industrial effluents using nanotechnology: a review

Thermodynamic Study of Cr+3 Ions Removal by “MnO2/MWCNT” Nanocomposite

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