Arsenazo III removal from diagnostic laboratories wastewater by effective adsorption onto thermochemically modified ordered mesoporous carbon

Olchowski, Rafał; Giannakoudakis, Dimitrios A.; Anastopoulos, Ioannis; Barczak, Mariusz; Zięba, Emil; Dobrowolski, Ryszard; Dobrzyńska, Joanna

doi:10.1016/j.enmm.2021.100607

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…Three distinct peaks were observed at the energy levels of 530.8, 531.6, and 533.2 eV corresponding to the presence of Co−O, O−C�O, and adsorbed H 2 O species, respectively. 57,58 Furthermore, the emergence of a distinct peak at 530.5 eV in the spectrum of Ir@Co-BPDC can be attributed to the presence of interfacial Ir−O−Co bonds. 59 The Ir 4f region was deconvoluted to obtain four peaks, as illustrated in Figure S5d.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal–Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Li,

Chen,

Zhang

et al. 2024

Inorg. Chem.

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A highly promising electrocatalyst has been designed and prepared for the hydrogen evolution reaction (HER). This involves incorporating well-dispersed Ir nanoparticles into a cobalt-based metal–organic framework known as Co-BPDC [Co(bpdc)(H2O)2, BPDC: 4,4′-biphenyldicarboxylic acid]. Ir@Co-BPDC demonstrates exceptional HER activity in alkaline media, surpassing both commercial Pt/C and recent noble-metal catalysts. Theoretical results indicate that electron redistribution, induced by interfacial bonds, optimizes the adsorption energy of water and hydrogen, thereby enhancing our understanding of the superior properties of Ir@Co-BPDC for HER.

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Section: ■ Results and Discussionmentioning

confidence: 98%

Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal–Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Li,

Chen,

Zhang

et al. 2024

Inorg. Chem.

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“…Mesoporous carbonaceous materials such as CMK-3 have a lot of advantages, e.g., a considerable pore volume, a large active surface area, and great opportunities for chemical modification of the carbonaceous surface by the intersection of various kinds of heteroatoms such as nitrogen, phosphorus, sulfur, oxygen, or boron. They also have good thermal resistance and very high mechanical and chemical stability [24][25][26][27][28][29]. It is worth mentioning that CMK-3 materials have good electrical conductivity and they can therefore be successfully used in electrochemical measurements; for example, dicyandiamide-impregnated mesoporous carbonaceous material additionally electrochemically decorated with lead film (Pb-N-CMK-3) was used as a glassy carbon electrode (GCE) modifier in the case of U(VI) determination [30].…”

Section: Introductionmentioning

confidence: 99%

Diclofenac-Impregnated Mesoporous Carbon-Based Electrode Material for the Analysis of the Arsenic Drug Roxarsone

et al. 2023

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This paper describes a novel electrode material, diclofenac-impregnated mesoporous carbon modified with a cationic surfactant, cetyltrimethylammonium bromide (DF-CMK-3/CTAB), for ultratrace analysis of the arsenic drug roxarsone (ROX). DF-CMK-3 amorphous carbon is a material with a high specific surface area and well-defined, hexagonally ordered, thin mesopores. The functional groups attached to the carbonaceous surface, such as chromene and pyron-like oxygen groups, lactam, and aromatic carbon rings, have the basic character and they can donate electrons. Modification of DF-CMK-3 with a CTAB layer significantly increases the analytical signal due to electrostatic interactions between the cationic surfactant and the anion form of ROX in the acidic medium. The voltammetric procedure at the glassy carbon sensor modified with DF-CMK-3/CTAB exhibited excellent sensitivity (limit of detection of 9.6 × 10−11 M) with a wide range of linearity from 5.0 × 10−10 to 1.0 × 10−4 M. Analysis of real samples (treated municipal wastewater and river water) showed recoveries from 96 to 102% without applying the complicated sample pretreatment step. The sensor demonstrated excellent sensitivity in the analysis of the arsenic drug ROX in the presence of interferences in environmental water samples.

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Synthesis and Characterization of Low-Cost Zirconium Nanocomposites as Novel Adsorbents for Arsenazo III Pollutant

Eliwa,

Abdel-Razik,

Hagag

et al. 2024

Water Air Soil Pollut

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Removing contaminated Arsenazo III dye from contaminated effluent is a challenge and of great interest due to its hazard and environmental impact. Therefore, the biggest challenge was producing highly efficient, easy to recycle, and economically inexpensive adsorbent materials for the contaminated dye. Three chemically stable zirconium nanocomposites with unique properties were synthesized by gel-precipitation technology. The composition, chemical, and physical properties of zirconium molybdate, tungstate, and silicate nanocomposites have been extensively proven using many different and appropriate devices such as XRD, SEM–EDX, TEM, FT-IR, BET, DLS, TGA-DTA, and zeta potential. By utilizing the most effective adsorption techniques, Azo-dye was successfully bound to ZrMo-NPs, ZrW-NPs, and ZrSi-NPs composites. The uptake capacities for these composites were measured at 0.29, 0.79, and 1.61 mmol.g−1, respectively. The sorption parameters were optimized as follows: a feed solution pH of 3 for ZrMo-NPs, a pH of 2.3 for ZrW-NPs, and a pH of 2.3 for ZrSi-NPs. The stirring time was set at 30 min, the metal ion concentration was 1.64 mmol L−1, and the sorbent dose was 7.5 mg. The adsorption results agreed well with the Langmuir isotherm and the pseudo-second-order reaction models and demonstrated the endothermic nature and kinetic improvement by increasing temperatures. The three nanocomposites effectively eliminated tainted dye from lab wastewater, offering promise for their potential applications in the future. Graphical Abstract

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Arsenazo III removal from diagnostic laboratories wastewater by effective adsorption onto thermochemically modified ordered mesoporous carbon

Cited by 4 publications

References 41 publications

Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal–Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal–Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Diclofenac-Impregnated Mesoporous Carbon-Based Electrode Material for the Analysis of the Arsenic Drug Roxarsone

Synthesis and Characterization of Low-Cost Zirconium Nanocomposites as Novel Adsorbents for Arsenazo III Pollutant

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