Cu(II)-influenced adsorption of ciprofloxacin from aqueous solutions by magnetic graphene oxide/nitrilotriacetic acid nanocomposite: Competition and enhancement mechanisms

Li, Meifang; Liu, Yunguo; Liu, Shaobo; Ding, Shurong; Zeng, Guangming; Hu, Xinjiang; Tan, Xiaofei; Jiang, Luhua; Zhang, Yan; Cai, Xiaoxi

doi:10.1016/j.cej.2017.03.016

Cited by 165 publications

(31 citation statements)

References 42 publications

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“…When TC is the only pollutant adsorbed by GO, the characteristic peaks of N mainly appear at 399.7 and 401.8 eV, which correspond to NH and = N +  groups, respectively . After the addition of Cu, a new peak was found at 401.0 eV, which could be attributed to the NHCu group (accounting for 13.50%) . According to the calculation, the content of N was found to increase from 0.8% (N/C = 1.15%) to 1.31% (N/C = 1.9%) after the addition of Cu.…”

Section: Resultsmentioning

confidence: 93%

“…The peak at 934.8 eV might belong to the NHCu of the multi‐pollutant. A satellite band appears between 937 and 944 eV, which suggests the existence of an oxidation state of Cu, such as CuO . After adsorbing multi‐pollutant (TC–Cu), the presence of TC led to a shift of the peaks from 932.6 and 934.4 eV to 933.2 and 934.8 eV, respectively, which suggested that some of the oxygen‐containing functional groups (CO,OH) on TC could combine with Cu 2+ and form the complex TC–Cu .…”

Section: Resultsmentioning

confidence: 99%

“…A satellite band appears between 937 and 944 eV, which suggests the existence of an oxidation state of Cu, such as CuO. 49 After adsorbing multi-pollutant (TC-Cu), the presence of TC led to a shift of the peaks from 932.6 and 934.4 eV to 933.2 and 934.8 eV, respectively, which suggested that some of the oxygen-containing functional groups (C-O,-OH) on TC could combine with Cu 2+ and form the complex TC-Cu. 13 The calculated results suggest that after the addition of TC, the percentage of Cu/C on the GO surface increased from 0.88% to 0.98% and the amount of Cu adsorbed by GO also increased wileyonlinelibrary.com/jctb considerably.…”

Section: Characterization Of Adsorbents Loaded With Antibioticsmentioning

confidence: 99%

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Mechanism of adsorption of tetracycline–Cu multi‐pollutants by graphene oxide (GO) and reduced graphene oxide (rGO)

Zhao

Hong

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND The adsorption of single pollutants onto graphene oxide (GO), such as heavy metals or organics, has been widely investigated, however, the simultaneous removal of the antibiotic–heavy metal multi‐pollutants from the intensive livestock and poultry industry has been investigated little. In this study, the GO/reduced GO(rGO) were prepared as adsorbent and the adsorption performance of tetracycline (TC), Cu2+, and the multi‐pollutants TC–Cu were investigated. RESULTS The GO surface was abundant in oxygen‐containing functional groups but was affected by a reduction effect, and thus rGO lost a large amount of –OH. In the presence of Cu2+, GO's adsorption quantity of TC increased by 96.64%, which was considerably higher than the increase (23.31%) observed in the case of rGO. In contrast, the adsorptivity of GO/rGO in Cu2+ increased slightly with the addition of TC. Further, X‐ray photoelectron spectroscopy (XPS) analysis revealed that the Cu2+ participated in a bridging interaction between TC and the adsorbent, forming a complexation TC–Cu. CONCLUSION GO and rGO showed favorable adsorption of TC, Cu2+, and TC–Cu. The adsorption capacity of multi‐pollutants was increased compared with individual adsorption, indicating a cooperative adsorption between the TC and Cu2+. The adsorption mechanism mainly included π–π conjugation, electrostatic interactions, and the bridge connection by Cu2+, which contributed to the performance of GO/rGO with respect to the adsorption of the antibiotic–heavy metal multi‐pollutants. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Adsorbents Loaded With Antibioticsmentioning

confidence: 99%

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Mechanism of adsorption of tetracycline–Cu multi‐pollutants by graphene oxide (GO) and reduced graphene oxide (rGO)

Zhao

Hong

et al. 2018

J of Chemical Tech & Biotech

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“…The adsorption of the aromatic molecules to the GO surface occurs via π–π interactions, and so the subsequent adsorption of tetracycline molecules onto the GO nanocomposite was driven by π–π and cationic‐π interactions. Taking this into account, several magnetic graphene based nanocomposites have been investigated for the removal of antibiotics from aqueous solution . Li and co‐workers have prepared a magnetic material by grafting a multidentate chelating agent (nitrilotriacetic acid) to an iron oxide and GO nanocomposite .…”

Section: Magnetic Nanosorbentsmentioning

confidence: 99%

“…It was found that, in addition to π–π and cationic‐π interactions, the adsorption is due to hydrogen bonds and amidation reaction between the composite and the antibiotic (Figure ). The effects of Cu 2+ on ciprofloxacin adsorption using the same nanocomposites were investigated . In the presence of Cu 2+ , the adsorption capacity of ciprofloxacin was significantly enhanced suggesting that Cu 2+ could provide additional sites to coordinate the antibiotic molecule.…”

Section: Magnetic Nanosorbentsmentioning

confidence: 99%

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

et al. 2018

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Inorganic nanoparticles (NPs) have emerged in the last decades as key materials for a number of technologies. In particular, noble metal (Ag, Au) and iron oxide NPs have revealed important applications due to their plasmonic and magnetic properties, respectively. Among these applications, this review provides, on one hand, an overview on the use of colloidal metal NPs in surface enhanced Raman scattering (SERS) chemical analysis and, on the other hand, the application of iron oxides as a new class of nanosorbents for water pollutants. These distinct types of NPs are the main building blocks to produce [a] Raman spectroscopy is a powerful analytical tool for chemical characterization, providing information about molecular structure, surface processes, and interface reactions. [31,32] Raman spectroscopy is based on the inelastic scattering of photons by chemical species and materials (Raman scattering). Among the incident photons that hit the sample only a small portion is inelastically scattered, i.e. comes out at a different frequency from the incident light. The spectral information is based on the detection of these scattered photons that are recorded as energy shifts (Raman shifts) from the wavenumber of the elastic scattered photons (Rayleigh scattering). Each band in the Raman spectrum can be assigned to a vibrational mode (or Paula

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Insights of the Removal of Antibiotics From Water and Wastewater: A Review on Physical, Chemical, and Biological Techniques

Khadir

Ramezanali

Taghipour

et al. 2021

Applied Water Science

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Cu(II)-influenced adsorption of ciprofloxacin from aqueous solutions by magnetic graphene oxide/nitrilotriacetic acid nanocomposite: Competition and enhancement mechanisms

Cited by 165 publications

References 42 publications

Mechanism of adsorption of tetracycline–Cu multi‐pollutants by graphene oxide (GO) and reduced graphene oxide (rGO)

Mechanism of adsorption of tetracycline–Cu multi‐pollutants by graphene oxide (GO) and reduced graphene oxide (rGO)

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

Insights of the Removal of Antibiotics From Water and Wastewater: A Review on Physical, Chemical, and Biological Techniques

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