Synthesis and Characterization of Halloysite/Carbon Nanocomposites for Enhanced NSAIDs Adsorption from Water

Szczepanik, Beata; Rędzia, Nina; Frydel, Laura; Słomkiewicz, P. M.; Kolbus, A.; Styszko, Katarzyna; Dziok, Tadeusz; Samojeden, Bogdan

doi:10.3390/ma12223754

Cited by 11 publications

(4 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Analysis of Total Carbon confirmed the content of carbon in the halloysite-carbon composites: 5 C/H—2.2 wt%, 10 C/H—2.9 wt%, 20 C/H—4.6 wt%, and 30 C/H—6.7 wt% [ 18 ]. Covering halloysite surface with amorphous carbon was confirmed by diffraction patterns of H, 5 C/H, and 30 C/H samples, ATR FT-IR spectra of halloysite and halloysite-carbon composites (5 C/H, 10 C/H, 20 C/H, and 30 C/H) showed the interaction between carbon as well as inner and outer surfaces of halloysite particles [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…Halloysite-carbon composites were prepared through saccharose solution impregnation of halloysite and carbonization at constant temperature 800 °C for 8 h (this temperature was obtained with a heating rate of 5 °C/min) under N 2 atmosphere. Details are described in [ 18 ]. The obtained halloysite-carbon materials were called 5 C/H, 10 C/H, 20 C/H, and 30 C/H, respectively, for saccharose solution concentration.…”

Section: Materials and Reagentsmentioning

confidence: 99%

“…Halloysite-carbon nanocomposites were obtained through liquid phase impregnation and carbonization using halloysite as the template and saccharose as the carbon precursor. They were successfully used for the adsorption of ketoprofen, naproxen, and diclofenac from an aqueous solution [ 18 ]. The presence of these pharmaceuticals in the environment is a growing problem because of their persistence and potential risk for the terrestrial and aquatic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface Properties of Halloysite-Carbon Nanocomposites and Their Application for Adsorption of Paracetamol

et al. 2020

Self Cite

View full text Add to dashboard Cite

Analysis of surface properties of halloysite-carbon nanocomposites and non-modified halloysite was carried out with surface sensitive X-ray photoelectron spectroscopy (XPS) and inverse gas chromatography (IGC). The XPS spectra were measured in a wide range of the electron binding energy (survey spectra) and in the region of C 1s photoelectron peak (narrow scans). The IGC results show the changes of halloysite surface from basic for pure halloysite to acidic for carbon-halloysite nanocomposites. Halloysite-carbon nanocomposites were used as adsorbents of paracetamol from an aqueous solution. The adsorption mechanism was found to follow the pseudo-second-order and intra-particle diffusion models. The Langmuir multi-center adsorption model described well the obtained experimental data. The presence of carbon increased significantly the adsorption ability of halloysite-carbon nanocomposites for paracetamol in comparison to the non-modified halloysite.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Materials and Reagentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Properties of Halloysite-Carbon Nanocomposites and Their Application for Adsorption of Paracetamol

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The carbon suspension was stirred throughout the measurements. Volumetric standards NaOH (0.1 mol/L) or HCl (0.1 mol/L) were used as titrants (Hofman and Pietrzak, 2011;Szczepanik et al, 2019).…”

Section: Membrane Structure Characterizationmentioning

confidence: 99%

Membranes obtained on the basis of cellulose acetate and their use in removal of phenol from liquid phase

Przybył¹,

Bazan-Woźniak²,

Nosal‐Wiercińska³

et al. 2021

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

The membranes based on cellulose acetate (CA) were obtained by the method of phase inversion and used for removal of phenol (in concentrations of 15 and 25 mg/L) from liquid phase. To differentiate the hydrophilic properties of the membrane surfaces, different amounts of cellulose acetate (14 and 18 wt. %) and polyvinylpyrrolidone as a pore-generating agent (PVP, 1, 2, 3 or 4 wt. %) were used. The membranes were characterised by determination of their porosity, equilibrium water content, wetting angle and content of surface oxygen functional groups. After the application of membranes to phenol removal, the following parameters characterising the process were determined: permeability, membrane resistance, coke resistances, pore resistances, total filtration resistance and flux recovery ratio. The membranes were found to show higher effectiveness in phenol removal from a solution of the initial concentration 15 mg/L, and more effective were the membranes with higher contents of cellulose acetate. On the surface of the membranes the oxygen functional groups of acidic nature are dominant, both before and after filtration. The membranes of higher contents of cellulose acetate show higher resistances.

show abstract

The adsorption studies of phenol derivatives on halloysite-carbon adsorbents by inverse liquid chromatography

2023

View full text Add to dashboard Cite

The adsorption of chloroxylenol and chlorophene on halloysite-carbon composites was investigated in batch and flow systems. The synthesis of halloysite-carbon composites through two different methods was performed with microcrystalline cellulose as carbon precursor. The obtained halloysite-carbon composites were characterized by SEM/EDS analysis, the low-temperature nitrogen adsorption/desorption methods, and infrared spectrometry (FT-IR). The SEM/EDS analysis and FT-IR spectra confirmed the presence of carbon on the surface of the halloysite. On the basis of the measurement results in the batch system, the two composites with the best adsorption properties for both adsorbates were chosen for measuring the flow system (using the inverse liquid chromatography). Removal efficiency was equal to 92.26 and 81.36%. It was obtained for chloroxylenol on HNT-m 800 and HNT-Zn 500, respectively. For chlorophene, the removal efficiency had the value of 78.79 and 77.87% on HNT-m 800 and HNT-Zn 800, respectively. Adsorption parameters of chloroxylenol and chlorophene were determined with inverse liquid chromatography methods: the adsorption equilibrium constants were determined with the peak division method and the adsorption capacity of the adsorbents was determined with the breakthrough curve method. Maximum adsorption capacity for the adsorption of chloroxylenol on HNT-m 800 was 5.48 mg·g−1 and on HNT-Zn 500 its value was 2.77 mg·g−1. For the adsorption of chlorophene on HNT-m 800 the value was 4.44 mg·g−1 and on HNT-Zn 800–2.5 mg·g−1. Halloysite-carbon composites can be successfully used as effective adsorbents for removing chloroxylenol and chlorophene from solutions in the flow system.

show abstract

Synthesis and Characterization of Halloysite/Carbon Nanocomposites for Enhanced NSAIDs Adsorption from Water

Cited by 11 publications

References 59 publications

Surface Properties of Halloysite-Carbon Nanocomposites and Their Application for Adsorption of Paracetamol

Surface Properties of Halloysite-Carbon Nanocomposites and Their Application for Adsorption of Paracetamol

Membranes obtained on the basis of cellulose acetate and their use in removal of phenol from liquid phase

The adsorption studies of phenol derivatives on halloysite-carbon adsorbents by inverse liquid chromatography

Contact Info

Product

Resources

About