Dataset Information

Pb²⁺ Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

ABSTRACT: Water-soluble Cu-In-Zn-S quantum dots (CIZS QDs) with orange fluorescence have been synthesized with a glutathione (GSH) as stabilizer via facile a one-step hydrothermal method. The optimal reaction conditions of CIZS QDs including temperature, time, pH, and the molar ratios of precursors were studied. TEM results indicate that the aqueous-dispersible CIZS QDs are quasi-spherical, and the average diameters are 3.76 nm with excellent fluorescent stability. Furthermore, the cytotoxicity of CIZS QDs was investigated by the microcalorimetry combining with TEM and the IC ₅₀ was 10.2 μM . CIZS QDs showed a promising perspective in applications such as a fluorescent probe for bioimaging and biolabeling due to the low cytotoxicity and good biocompatibility. Moreover, the CIZS QDs can distinguish Pb²⁺ ion from other ions, offering great potentials in lead ion determination in drinking water. According to the results of UV, XRD, FL, PL, and ITC methods, the mechanism of CIZS QDs-Pb²⁺ assay is due to hydrogen bonding or van der Waals forces in the formation of Pb²⁺ and CIZS QDs.

SUBMITTER: Han X

PROVIDER: S-EPMC8883431 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Pb<sup>2+</sup> Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

Han XiaoLe X Yu Fan F Lei JiaWen J Zhu Jiahua J Fu HaiYan H Hu JunCheng J Yang Xiao-Long XL

Frontiers in chemistry 20220214

Water-soluble Cu-In-Zn-S quantum dots (CIZS QDs) with orange fluorescence have been synthesized with a glutathione (GSH) as stabilizer via facile a one-step hydrothermal method. The optimal reaction conditions of CIZS QDs including temperature, time, pH, and the molar ratios of precursors were studied. TEM results indicate that the aqueous-dispersible CIZS QDs are quasi-spherical, and the average diameters are 3.76 nm with excellent fluorescent stability. Furthermore, the cytotoxicity of CIZS QD ...[more]

PMID: 35237558

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Project description:Elevated inorganic phosphate (Pi) concentrations in pore water of amended tailings under direct revegetation may cause toxicity in some native woody species but not native forbs or herb species, all of which are key constituents in target native plant communities for phytostabilizing base metal mine tailings. As a result, Pi sorption capacity has been quantified by a conventional batch procedure in three types of base metal mine tailings sampled from two copper (Cu)-lead (Pb)-zinc (Zn) mines, as the basis for Pi-fertiliser addition. It was found that the Pi-sorption capacity in the tailings and local soil was extremely high, far higher than highly weathered agricultural soils in literature, but similar to those of volcanic ash soils. The Langmuir P-sorption maximum was up to 7.72, 4.12, 4.02 and 3.62 mg P g-1 tailings, in the fresh tailings of mixed Cu-Pb-Zn streams (MIMTD7), the weathered tailings of mixed Cu-Pb-Zn streams (MIMTD5), EHM-TD (fresh Cu-stream, high magnetite content) and local soil (weathered shale and schist), respectively. Physicochemical factors highly correlated with the high Pi-sorption in the tailings were fine particle distribution, oxalate and dithionite-citrate-bicarbonate extractable Fe (FeO and Fed), oxalate-extractable Al and Mn, and the levels of soluble Cd and Zn, and total S and Fe. Large amounts of amorphous Fe oxides and oxyhydroxides may have been formed from the oxidation of pyritic materials and redox cycles of Fe-minerals (such as pyrite (FeS2), ankerite (Ca(Fe Mg)(CO3)2 and siderite (FeCO3), as indicated by the extractable FeO values. The likely formation of sparingly soluble Zn-phosphate in the Pb-Zn tailings containing high levels of Zn (from sphalerite ((Zn,Fe)S, ZnS, (Zn,Cd)S)) may substantially lower soluble Zn levels in the tailings through high rates of Pi-fertiliser addition. As a result, the possibility of P-toxicity in native plant species caused by the addition of soluble phosphate fertilizers would be minimal.

Dataset Information

Pb²⁺ Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

Publications

Pb<sup>2+</sup> Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

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Dataset Information

Pb2+ Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

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Pb<sup>2+</sup> Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.

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OmicsDI is part of the ELIXIR infrastructure

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Pb²⁺ Responsive Cu-In-Zn-S Quantum Dots With Low Cytotoxicity.