Implications of the Use of Nanomaterials for Environmental Protection

Domingos, Rute F.; Pinheiro, José Paulo

doi:10.1002/9781118845530.ch32

Cited by 2 publications

(1 citation statement)

References 72 publications

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“…Environmental pollution caused by cadmium (Cd) is a global concern due to its persistence, ability to bioaccumulate, and highly toxic nature [1][2][3][4][5]. Cd and its various compounds, whether as settled, soluble, bioadsorbed, or bioaccumulated forms, pervade the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Cadmium detection with nickel complex nanoparticles sensor using QCM technique Mohamed T. Radwan 1 , Walaa H. Mahmoud 1 , Mohamed A.F. ElMosallamy 2 and Ahmed A. El-Sherif 1

Tarek,

Mahmoud,

Elmosallamy

et al. 2024

Bulletin of Faculty of Science, Zagazig University

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Cadmium (Cd) contamination in both water and soil constitutes a significant environmental concern, acknowledged as a pollutant. The uptake and accumulation of bioavailable Cd by food crops further accentuate its threat. The imperative for consistent monitoring of Cd levels in the environment stems from the aim of mitigating potential harm and exposure to humans. In this context, the synthesis of nickel complex nanoparticles emerges as an eco-friendly and dependable process, holding relevance across diverse domains. This process has led to the development of an innovative nano nickel sensor for the purpose of detecting cadmium.The comprehensive characterization of the nano nickel complex was accomplished through a different analytical tools, encompassing DLS, Zeta potential, TEM, AFM, FT-IR spectroscopy, contact angle measurements, BET surface area determination, and pore size analysis. Moreover, the application of the nano nickel complex as a simple, cost-effective, and highly sensitive QCM sensor was explored, primarily targeting the rapid detection of cadmium. Through the utilization of the nano nickel complex sensor as a discerning and responsive QCM sensor, cadmium detection can be achieved at concentrations as low as 1 ppm.The cytotoxicity of the cadmium complex nanoparticles was screened. Notably, this methodology exhibits successful applicability for the determination of Cd[II] ions in groundwater and industrial effluent wastewater samples, providing a valuable tool for environmental monitoring and protection.

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Section: Introductionmentioning

confidence: 99%

Cadmium detection with nickel complex nanoparticles sensor using QCM technique Mohamed T. Radwan 1 , Walaa H. Mahmoud 1 , Mohamed A.F. ElMosallamy 2 and Ahmed A. El-Sherif 1

Tarek,

Mahmoud,

Elmosallamy

et al. 2024

Bulletin of Faculty of Science, Zagazig University

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The role of charged polymer coatings of nanoparticles on the speciation and fate of metal ions in the environment

Domingos

Franco

Pinheiro

2014

Environ Sci Pollut Res

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Determining the environmental risk of metals requires an in-depth understanding of the environmental matrices composition, which currently also includes the presence of manufactured metallic nanoparticles (NPs) usually, stabilized by a polymer surface coating. As a consequence, is necessary to take into account effects of the NP core, the polymer surface coating and their mutual interaction as well as with other environmental components. The release of metal ions from metallic NPs is a well-known outcome, however, the effect of the presence of the NP polymer coating in the NPs solubilization mechanism is not well understood. In this study the dynamic speciation of Cd and Pb in presence of a polyacrylic acid (PAA)-stabilized CdTe/CdS NP was quantified by scanned stripping chronopotentiometry (SSCP). It was found that although the NP solubility was 5.8× larger at pH 8.5 than at pH 6.0, the amount of free Cd ions was much smaller (2.4 % at pH 8.5 vs. 57 % at pH 6.0). The concentration of free Cd and Pb ions in solution was larger in presence of the PAA-shells than when in presence of the same amount of polymer but when this is at the surface of the NP. This effect is attributed to the metal ions interaction with the particle itself. The effect is notably larger for Pb ions and might results from the exchange of Cd by Pb ions at the particle surface since PbS is less soluble than CdS.

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Implications of the Use of Nanomaterials for Environmental Protection

Cited by 2 publications

References 72 publications

Cadmium detection with nickel complex nanoparticles sensor using QCM technique Mohamed T. Radwan 1 , Walaa H. Mahmoud 1 , Mohamed A.F. ElMosallamy 2 and Ahmed A. El-Sherif 1

Cadmium detection with nickel complex nanoparticles sensor using QCM technique Mohamed T. Radwan 1 , Walaa H. Mahmoud 1 , Mohamed A.F. ElMosallamy 2 and Ahmed A. El-Sherif 1

The role of charged polymer coatings of nanoparticles on the speciation and fate of metal ions in the environment

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