Adsorption of emerging pollutants on functionalized multiwall carbon nanotubes

Patiño, Yolanda; Dı́az, Eva; Ordóñez, Salvador; Gallegos-Suárez, Esteban; Guerrero-Ruı́z, A.; Rodrı́guez-Ramos, I.

doi:10.1016/j.chemosphere.2015.04.089

Cited by 103 publications

(28 citation statements)

References 48 publications

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“…Yu et al, 2014). π-π EDA interactions between benzene rings of the CNT graphitic surface and benzene rings of aromatic organics (or regions containing C¼ C bonds) is often proposed as the main mechanism of organics sorption onto CNT (Apul and Karanfil, 2015;Kupryianchyk et al, 2016;Patiño et al, 2015;Wang et al, 2015). The mechanism of organics sorption can be additionally complicated when hydroxyl and carbonyl modified CNT were used.…”

Section: Cntohsmentioning

confidence: 99%

The interactions of UV and/or H2O2 treated CNTOH and CNTCOOH with environmental fulvic acids

Czech

2016

Environmental Research

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Section: Cntohsmentioning

confidence: 99%

The interactions of UV and/or H2O2 treated CNTOH and CNTCOOH with environmental fulvic acids

Czech

2016

Environmental Research

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“…The functional activation of CNTs is a promising technique for introducing functional moieties for increasing the specific surface area, which eventually employed for the adsorption of various pharmaceutical contaminants [106]. For example, Ji and co-workers [51] used KOH dry etching method to functionalize CNTs which resulted in increased surface area from 410.7 to 652.8 m 2 g -1 and 157.3 to 422.6 m 2 g -1 for SWCNTs and MWCNTs, respectively.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Removal of Pharmaceutical Contaminants in Wastewater Using Nanomaterials: A Comprehensive Review

Chauhan

Sillu

Agnihotri

2019

CDM

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Background: The limitless presence of pharmaceutical contaminants in discharged wastewater has emerged as a threat to aquatic species and humans. Their presence in drinking water has although raised substantial concerns, very little is known about the fate and ecological impacts of these pollutants. As a result, these pollutants are inevitably introduced to our food chain at trace concentrations. Unfortunately, the conventional wastewater treatment techniques are unable to treat pharmaceuticals completely with practical limitations. The focus has now been shifted towards nanotechnology for the successful remediation of these persistent pollutants. Thus, the current review specifically focuses on providing readers brief yet sharp insights into applications of various nanomaterials for the removal of pharmaceutical contaminants. Methods: An exhaustive collection of bibliographic database was done with articles having high impact and citations in relevant research domains. An in-depth analysis of screened papers was done through standard tools. Studies were categorized according to the use of nanoscale materials as nano-adsorbents (graphene, carbon nanotubes), nanophotocatalysts (metal, metal oxide), nano-filtration, and ozonation for promising alternative technologies for the efficient removal of recalcitrant contaminants. Results: A total of 365 research articles were selected. The contemporary advancements in the field of nanomaterials for drinking and wastewater treatment have been thoroughly analyzed along with their future perspectives. Conclusion: The recommendations provided in this article will be useful to adopt novel strategies for on-site removal of the emerging contaminants in pharmaceutical effluents and related industries.

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“…The presence of sp 2 hybridized nanocarbons in these materials contribute to their outstanding features, which trigger the interest of both the scientific and technological communities [5]. Given their hydrophobicity and large surface area, graphene and CNTs are promising sorbents for removing various organic chemicals, such as aromatic amines, PAHs, and pesticides [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Interaction mechanisms of antibiotic sulfamethoxazole with various graphene-based materials and multiwall carbon nanotubes and the effect of humic acid in water

Wang

et al. 2017

Carbon

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We studied the interaction mechanisms between carbonaceous nanomaterials (CNMs) and sulfamethoxazole (SMX) to elucidate their adsorption behaviors. Three graphene-based materials, reduced graphene oxide (rGO), graphene oxide (GO), and graphene nanoplatelet pastes (GNP), and five multiwalled carbon nanotubes (MWCNTs), MWCNT10, MWCNT15, MWCNT15-OH, MWCNT15-COOH, and N-doped MWCNTs, were used as sorbents. Oxygen-containing functional groups and graphene wrinkling suppressed SMX adsorption on GO and GNPs due to fewer Csp 2 ring sites for π-π stacking and fewer accessible flat surface adsorption sites, respectively. Ring current-induced 1 H NMR upfield chemical shifts increased as the π-donor concentration increased, as well as π-donor strength of polycyclic aromatic hydrocarbons (PAHs) (pyrene > phenanthrene > naphthalene) as model graphene compounds, suggesting that π-π interaction strength of SMX with PAHs associated with π-donor strength. Moreover, 1 H NMR results further verified that carboxylic and hydroxyl groups in PAHs (9-phenanthrol and 3-phenanthrenecarboxylic acid) weakened the complexation between SMX and the graphitic surface. Additionally, the morphologies of rGO and MWCNT10 were observed using AFM, and transformed from being linear to scattered as the loading dose of the humic acid increased. Our results are useful to understand the distinct interaction mechanisms and subsequent adsorption behaviors resulting from various carbon nanomaterials with SMX in water.

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Adsorption of emerging pollutants on functionalized multiwall carbon nanotubes

Cited by 103 publications

References 48 publications

The interactions of UV and/or H2O2 treated CNTOH and CNTCOOH with environmental fulvic acids

The interactions of UV and/or H2O2 treated CNTOH and CNTCOOH with environmental fulvic acids

Removal of Pharmaceutical Contaminants in Wastewater Using Nanomaterials: A Comprehensive Review

Interaction mechanisms of antibiotic sulfamethoxazole with various graphene-based materials and multiwall carbon nanotubes and the effect of humic acid in water

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