ACS Omega
DryProTech Lab, Department of Chemical Engineering, Indian Institute of Technology-Gandhinagar, Palaj, Gandhinagar, Gujarat-382055, India.
Published: July 2024
The elevated accumulation of electronic wastes, especially containing Dysprosium ion [i.e., Dy(III)], is emerging as a potential environmental threat. To overcome the deleterious effects of Dy(III), detection and removal of Dy(III) is crucial. Moreover, recovery of high-value Dy(III) is economically beneficial. However, the availability of a single material, capable of sensing Dy(III) in nanomolar concentration and simultaneously adsorbing it with high adsorption capacity (AC), is rare. Therefore, to solve this problem, a pH-responsive fluorescent amino graphene oxide-impregnated-engineered polymer hydrogel () has been synthesized, suitable for selective sensing of Dy(III) in nanomolar concentration and adsorbing it from wastewater at ambient temperature. This terpolymeric hydrogel is synthesized from two nonfluorescent monomers, propenoic acid (PNA) and prop-2-enamide (PEAM), along with an in situ generated comonomer (3-acrylamidopropanoic acid/AAPPA) through N- activation during polymerization. Surface properties and structural details of are established using NMR, FTIR, XRD, TEM, SEM, EDX, Raman, MALDI-mass, and DLS studies. The exhibits blue fluorescence with turn-off sensing of Dy(III) with the detection limit of 1.88 × 10 (M). The maximum AC of is 41.97 ± 0.39 mg g. The developed shows consistent adsorption-desorption property over five cycles, with more than 90% desorption efficiency per cycle, confirming significant recovery of the valuable Dy(III). From Logic gate calculations, complexation of Dy(III) and may be the reason behind fluorescence quenching. The also shows antibacterial action against ∼3 × 10 cells mL of solution. Overall, the developed pH-responsive engineered hydrogel can be used as a potential low-cost sensing device and reusable adsorbent for Dy(III).
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http://dx.doi.org/10.1021/acsomega.4c02772 | DOI Listing |
ACS Omega
December 2024
Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai 50200, Thailand.
To examine the water-induced photoluminescence turn-on and its potential application in trace water sensing, a new series of [Ln(dmba)(HO)]·2HO, where Ln = La (), Pr (), Nd (), Sm (), Eu (), Gd (), Tb (), Dy (), Ho (), and Er (), were synthesized using dimethoxybenzoic acid (Hdmba). Their single-crystal structures and thermal and chemical robustness were investigated, and the effects of lanthanide contraction and noncovalent interactions were discussed. The photoluminescence and colorimetric properties of - were investigated.
View Article and Find Full Text PDFMolecules
September 2024
School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
A Dy(III) coordination polymer (CP), [Dy(spasds)(HO)] () (NaHspasds = 5-(4-sulfophenylazo)salicylic disodium salt), has been synthesized using a hydrothermal method and characterized. features a 2D layered structure, where the spasda anions act as pentadentate ligands, adopting carboxylate, sulfonate and phenolate groups to bridge with four Dy centers in -: , -: , and monodentate coordination modes, respectively. It possesses a unique (4,4)-connected net with a Schläfli symbol of {4·6}{4}.
View Article and Find Full Text PDFSci Rep
August 2024
Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382055, India.
Rare earth metals (REMs), such as Dysprosium (Dy) and Ytterbium (Yb), have experienced unprecedented demand in recent times due to their applications in high-end technologies. REMs are found only in select geographic locations placing tremendous economic constraints on their use. In this work, we have developed Gum Acacia-grafted hydrogels (GmAc-FluoroTerPs) that are capable of selective detection and capture of Dy and Yb.
View Article and Find Full Text PDFACS Omega
July 2024
DryProTech Lab, Department of Chemical Engineering, Indian Institute of Technology-Gandhinagar, Palaj, Gandhinagar, Gujarat-382055, India.
The elevated accumulation of electronic wastes, especially containing Dysprosium ion [i.e., Dy(III)], is emerging as a potential environmental threat.
View Article and Find Full Text PDFAnal Chim Acta
September 2023
School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500-Subang Jaya, Selangor, Malaysia.
Tannic acid (TA) is a water-soluble polyphenol and used in beverages, medical fields as clarifying and additive agents. In daily life, TA is unavoidable, and excessive consumption of tannin containing foods can harm health. Thus, rapid and sensitive quantification is highly necessary.
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