Preparation of Nano-Copper Sulfide and Its Adsorption Properties for 17α-Ethynyl Estradiol

Zhang, Sifeng; Meng, Wenxiang; Wang, Lulu; Li, Lingxin; Long, Yanju; Hei, Yunrui; Zhou, Luting; Wu, Shenglan; Zheng, Ziguang; Luo, Liang; Jiang, Fengzhi

doi:10.1186/s11671-020-3274-6

Cited by 15 publications

(7 citation statements)

References 31 publications

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“…All the diffraction peaks can be assigned to the pure covellite hexagonal phase (JCPDS 06-0464). It can be observed that CuS QDs have well-defined characteristic diffraction peaks with 2θ values of (27.7°, 29.3°, 31.76°, 32.7°, 47.8°, 52.3°, 59.2°) which are corresponding respectively to (100), (101), (103), (006), (107), (108), and (116) crystal planes of the preferential orientation of CuS NPs 41 , 42 . CuS QDs have relatively high crystallinity and the most intense peak at 2θ = 31.76 relates to (103) diffraction plane.…”

Section: Resultsmentioning

confidence: 99%

Copper sulfide and zinc oxide hybrid nanocomposite for wastewater decontamination of pharmaceuticals and pesticides

Mohammed

Ali

Gomaa

et al. 2022

Sci Rep

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In this work, hybrid nanocomposites of CuS QDs @ ZnO photocatalysts are fabricated through a facile microwave-assisted (MW) hydrothermal method as a green preparation process. The prepared photocatalysts (PCs) are employed under simulated sunlight (SL) for the degradation of ciprofloxacin, ceftriaxone, ibuprofen pharmaceuticals, methylene blue dye, and 2,4,5-trichlorophenoxyacetic acid (2,4-D) pesticide. The prepared photocatalysts are characterized in detail using several compositional, optical, and morphological techniques. The influence of the CuS (QDs) wt. % on morphological, structural, as well as photocatalytic degradation efficiency have been investigated. The small displacement between the (107) plane of CuS and the (102) plane of ZnO can confirmed the existence of lattice interaction, implying the formation of p-n heterojunctions. TEM and XRD results demonstrated that the CuS QDs are established and uniformly decorated on the surface of ZnO NRs, confirming the forming of an efficient CuS QDs @ ZnO heterojunction nanostructures. The CuS QDs @ ZnO hybrid nanocomposites showed enhancement in crystallinity, light absorption, surface area, separation of e–h pair and inhibition in their recombination at an interfacial heterojunction. In addition it is found that, 3 wt% CuS QDs @ ZnO has the foremost influence. The results showed improvement of photocatalytic activity of the 3% CuS QDs @ ZnO hybrid nanocomposite as compared to the bare ZnO nanorods. The impressive photocatalytic performance of CuS @ ZnO heterostructure nanorods may be attributed to efficient charge transfer. The prepared CuS QDs @ ZnO hybrid nanocomposites exhibited 100% removal for MB dye, after 45 min, and after 60 min for ibuprofen, ciprofloxacin pharmaceuticals, and 2.4.5 trichloro phenoxy acetic acid pesticide with the catalyst amount of 0.2 g/L. Although 100% removal of ceftriaxone pharmaceutical acheived after 90 min. In addition CuS QDs @ ZnO hybrid nanocomposites exhibited complete removal of COD for ibuprofen, ceftriaxone pharmaceuticals and 2.4.5 trichloro phenoxy acetic acid pesticide after 2 h with no selectivity. Briefly, 3% CuS QDs@ZnO hybrid nanocomposites can be considered as promising photoactive materials under simulated sunlight for wastewater decontamination.

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Section: Resultsmentioning

confidence: 99%

Copper sulfide and zinc oxide hybrid nanocomposite for wastewater decontamination of pharmaceuticals and pesticides

Mohammed

Ali

Gomaa

et al. 2022

Sci Rep

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“…The intermediate product (Fe 2 S 3 ) is unstable and rapidly converts into FeS and S. The strong coordination between Fe and S results in the breakage of other metal bonds (e.g., of metal–linker) and ultimately results in the release of the linker and MOFs’ decomposition. The emergence of extra peaks at 28°, 32°, and 45–47° (2θ) in the PXRD pattern (Figure C) of the NaHS-immersed samples indicates the presence of a metal–sulfide linkage − and correlates to the decomposition phenomenon. We also compared the FT-IR analysis of the NaHS immersed samples with non-NaHS-exposed samples and a free linker.…”

Section: Resultsmentioning

confidence: 99%

Programmable Drug Release from a Dual-Stimuli Responsive Magnetic Metal–Organic Framework

2022

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Along with the increasing incidence of cancer and drawbacks of traditional drug delivery systems (DDSs), developing novel nanocarriers for sustained targeted-drug release has become urgent. In this regard, metal–organic frameworks (MOFs) have emerged as potential candidates due to their structural flexibility, defined porosity, lower toxicity, and biodegradability. Herein, a FeMn-based ferromagnetic MOF was synthesized from a preassembled Fe 2 Mn(μ 3 -O) cluster. The introduction of the Mn provided the ferromagnetic character to FeMn-MIL-88B. 5-Fluoruracil (5-FU) was encapsulated as a model drug in the MOFs, and its pH and H 2 S dual-stimuli responsive controlled release was realized. FeMn-MIL-88B presented a higher 5-FU loading capacity of 43.8 wt % and rapid drug release behavior in a tumor microenvironment (TME) simulated medium. The carriers can rapidly release loaded drug of 70% and 26% in PBS solution (pH = 5.4) and NaHS solution (500 μM) within 24 h. The application of mathematical release models indicated 5-FU release from carriers can be precisely fitted to the first-order, second-order, and Higuchi models of release. Moreover, the cytotoxicity profile of the carrier against human embryonic kidney cells (HEK293T) suggests no adverse effects up to 100 μg/mL. The lesser toxic effect on cell viability can be attributed to the low toxicity values [LD 50 (Fe) = 30 g·kg –1 , (Mn) = 1.5 g·kg –1 , and (terephthalic acid) = 5 g·kg –1 ] of the MOFs structural components. Together with dual-stimuli responsiveness, ferromagnetic nature, and low toxicity, FeMn-MIL-88B MOFs can emerge as promising carriers for drug delivery applications.

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“…and As-adsorbed Fe/AlO(OH) showed type IV adsorption isotherm behavior. Moreover, Figure 7 showed H3-type hysteresis loops according to BDDT classification, indicating the samples contain meso-pores (2-50 nm) and will therefore enable high permeability of the contaminated water hence increasing the rate at which contaminants are scavenged out of the solution [51,55,56]. The nitrogen adsorption-desorption curve closely resembles that reported by Zhang et al [56] which was also interpreted as conforming to H3-type hysteresis with similar surface area and pore size as that measured in this study.…”

Section: Surface Area and Porosity Of Fe/alo(oh) Pre-and Post As-adso...mentioning

confidence: 99%

Effective removal of arsenate from wastewater using aluminium enriched ferric oxide-hydroxide recovered from authentic acid mine drainage

Muedi

Brink

Masindi

et al. 2021

Journal of Hazardous Materials

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Preparation of Nano-Copper Sulfide and Its Adsorption Properties for 17α-Ethynyl Estradiol

Cited by 15 publications

References 31 publications

Copper sulfide and zinc oxide hybrid nanocomposite for wastewater decontamination of pharmaceuticals and pesticides

Copper sulfide and zinc oxide hybrid nanocomposite for wastewater decontamination of pharmaceuticals and pesticides

Programmable Drug Release from a Dual-Stimuli Responsive Magnetic Metal–Organic Framework

Effective removal of arsenate from wastewater using aluminium enriched ferric oxide-hydroxide recovered from authentic acid mine drainage

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