A facile preparation of CuS-BSA nanocomposite as enzyme mimics: Application for selective and sensitive sensing of Cr(VI) ions

Swaidan, Abir; Borthakur, Priyakshree; Boruah, Purna K.; Das, Manash R.; Barras, Alexandre; Hamieh, S.; Toufaily, Joumana; Hamieh, Tayssir; Szunerits, Sabine; Boukherroub, Rabah

doi:10.1016/j.snb.2019.05.052

Cited by 70 publications

(39 citation statements)

References 44 publications

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“…Cr(III) is mostly insoluble and is a micronutrient which is biologically important. Cr(VI) is extremely soluble and mobile (1,680 g/L) over a wide pH range and mobile (Dinker and Kulkarni 2015;Prepared by Federal-Provincial-Territorial Committee 2015;Zhao et al 2017;Borthakur et al 2019;Swaidan et al 2019;Wei et al 2020;Jing et al 2021)…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Chigondo¹,

Nyamunda²,

Maposa³

et al. 2022

Water Science and Technology

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Anthropogenic activities are principally responsible for the manifestation of toxic and carcinogenic hexavalent chromium (Cr(VI)) triggering water pollution that threaten the environment and human health. The World Health Organisation (WHO) restricts Cr(VI) ions concentration to 0.1 and 0.05 mg/L in inland surface water and drinking water, respectively. The available technologies for Cr(VI) ions removal from water were highlighted with emphasis on adsorption technology. Furthermore, the characteristics of several polypyrrole-based adsorbents were scrutinized including amino containing compounds, biosorbents, graphene/graphene oxide, clay materials and many other additives with reported effective Cr(VI) ions uptake. This efficiency in Cr(VI) ions adsorption is attributed to enhanced redox properties, increased number of functional groups and well as synergistic behaviour of the materials making up the composite. The Langmuir isotherm best described the adsorption processes with maximum adsorption capacities ranging from 3.40–961.50 mg/g. The regeneration of Cr(VI) ions laden adsorbents was studied. Ion exchange, electrostatic attractions, complexation, chelation reactions with protonated sites and the reduction were the mechanisms of adsorption. Nevertheless, there are limited details on comprehensive adsorbent regeneration studies to prolong robustness in adsorption-desorption cycles and utilization of the Cr(VI) ions laden adsorbent in other areas of research to limit the threat of secondary pollution.

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Section: Introductionmentioning

confidence: 99%

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Chigondo¹,

Nyamunda²,

Maposa³

et al. 2022

Water Science and Technology

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“…CuS-BSA nanoparticles were synthesized via a bio-mineralization assay, according to previously reported literature with some modifications [ 32 , 33 ]. In a typical experiment, 70 mg of BSA was dissolved in 9.5 mL MQ-water.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Antibacterial Activity of CuS-BSA/Lysozyme under Near Infrared Light Irradiation

et al. 2021

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The synthesis of multifunctional photothermal nanoagents for antibiotic loading and release remains a challenging task in nanomedicine. Herein, we investigated a simple, low-cost strategy for the preparation of CuS-BSA nanoparticles (NPs) loaded with a natural enzyme, lysozyme, as an antibacterial drug model under physiological conditions. The successful development of CuS-BSA NPs was confirmed by various characterization tools such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Lysozyme loading onto CuS-BSA NPs was evaluated by UV/vis absorption spectroscopy, Fourier-transform infrared spectroscopy (FTIR), zeta potential, and dynamic light scattering measurements. The CuS-BSA/lysozyme nanocomposite was investigated as an effective means for bacterial elimination of B. subtilis (Gram-positive) and E. coli (Gram-negative), owing to the combined photothermal heating performance of CuS-BSA and lysozyme release under 980 nm (0.7 W cm−2) illumination, which enhances the antibiotic action of the enzyme. Besides the photothermal properties, CuS-BSA/lysozyme nanocomposite possesses photodynamic activity induced by NIR illumination, which further improves its bacterial killing efficiency. The biocompatibility of CuS-BSA and CuS-BSA/Lysozyme was elicited in vitro on HeLa and U-87 MG cancer cell lines, and immortalized human hepatocyte (IHH) cell line. Considering these advantages, CuS-BSA NPs can be used as a suitable drug carrier and hold promise to overcome the limitations of traditional antibiotic therapy.

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“…This indicates the strategy applicability was satisfactory. Meanwhile, in comparison of other colorimetric determination methods for Cr(VI) [25][26][27][28], the detection performances of this strategy possess certain benefits (Table 1). From the corresponding…”

Section: Determination Property Assessmentmentioning

confidence: 99%

Morphology Adjustment and Optimization of CuS as Enzyme Mimics for the High Efficient Colorimetric Determination of Cr(VI) in Water

Deng

et al. 2022

Nanomaterials

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Metal sulfide is often utilized as a catalyzed material to form colorimetric response system for some heavy metal detection. While the aggregation effect and conventional morphology limited the catalyzed efficiency. Herein, a robust method based on morphology adjustment was proposed to improve the dispersibility and catalytic performance of CuS. The results demonstrated when the solvent ratio of ethylene glycol and dimethyl sulfoxide arrived at 3:1, it displayed an optimal structure which is like a patulous flower. Meanwhile, an optimal surface binding energy (ΔE) of 120.1 kcal/mol was obtained via theoretical calculation model. The flower-like structure caused a 2-fold increase in the catalytic level. Subsequently, the CuS was employed to make colorimetric detection of Cr(VI) in water. The assay results exhibited a linear range of the Cr(VI) from 60 to 340 nM, the limit of detection was 1.07 nM. In the practical tests for Qianhu lake water, the spiked recoveries were 93.6% and 104% with the RSD of 4.71% and 3.08%. Therefore, this CuS-based colorimetric method possesses a satisfactory application prospect for the Cr(VI) determination in water.

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A facile preparation of CuS-BSA nanocomposite as enzyme mimics: Application for selective and sensitive sensing of Cr(VI) ions

Cited by 70 publications

References 44 publications

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Polypyrrole-based adsorbents for Cr(VI) ions remediation from aqueous solution: a review

Enhanced Antibacterial Activity of CuS-BSA/Lysozyme under Near Infrared Light Irradiation

Morphology Adjustment and Optimization of CuS as Enzyme Mimics for the High Efficient Colorimetric Determination of Cr(VI) in Water

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