Mesoporous multi-silica layer-coated Y2O3:Eu core-shell nanoparticles: Synthesis, luminescent properties and cytotoxicity evaluation

Ansari, Anees A.; Khan, Aslam; Labis, Joselito P.; Alam, Manawwer; Manthrammel, M. Aslam; Ahamed, Maqusood; Akhtar, Mohd Javed; Aldalbahi, Ali; Ghaithan, Hamid M.

doi:10.1016/j.msec.2018.11.046

Cited by 52 publications

(15 citation statements)

References 56 publications

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“…A sluggish weight loss of ~ 3% is observed in between 727 and 900 °C temperature, which is assigned to the burning or combustion of lattice oxygen with airborne carbonates to form the perovskite structure. Such observations are in accord with previous literature reports 42 – 46 . It is worth noting that, in increasing the Ce ion substitution concentration in perovskite lattice, the quantity of weight loss has also increased as seen in the TGA data of La 0.90 Ce 0.10 CoO 3 .…”

Section: Resultssupporting

confidence: 94%

Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles

Ansari

Adil

Alam

et al. 2020

Sci Rep

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A series of La1-xCexCoO3 perovskite nanoparticles with rhombohedral phases was synthesized via sol–gel chemical process. X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Electron Diffraction Spectroscopy (EDS), Thermogravimetric Analysis (TGA), UV–Vis spectroscopy, Fourier Transform Infrared spectra (FTIR), Nitrogen Adsorption/desorption Isotherm, Temperature Program Reduction/Oxidation (TPR/TPO), X-ray Photoelectron Spectroscopy (XPS) techniques were utilized to examine the phase purity and chemical composition of the materials. An appropriate doping quantity of Ce ion in the LaCoO3 matrix have reduced the bond angle, thus distorting the geometrical structure and creating oxygen vacancies, which thus provides fast electron transportation. The reducibility character and surface adsorbed oxygen vacancies of the perovskites were further improved, as revealed by H2-TPR, O2-TPD and XPS studies. Furthermore, the oxidation of benzyl alcohol was investigated using the prepared perovskites to examine the effect of ceria doping on the catalytic performance of the material. The reaction was carried out with ultra-pure molecular oxygen as oxidant at atmospheric pressure in liquid medium and the kinetics of the reaction was investigated, with a focus on the conversion and selectivity towards benzaldehyde. Under optimum reaction conditions, the 5% Ce doped LaCoO3 catalyst exhibited enhanced catalytic activity (i.e., > 35%) and selectivity of > 99%, as compared to the other prepared catalysts. Remarkably, the activity of catalyst has been found to be stable after four recycles.

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Section: Resultssupporting

confidence: 94%

Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles

Ansari

Adil

Alam

et al. 2020

Sci Rep

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“…Мезопористый диоксид кремния (mSiO 2 ) привлекает значительное внимание, так как может быть использован в качестве средства доставки лекарств, благодаря своим уникальным свойствам: большой площади поверхности, большому объему пор с узким распределением и хорошей химической и термической стабильности [137][138][139]. Интеграция mSiO 2 с наночастицами, допированными РЗИ, для создания однородных нанокомпозитов со структурой " ядро@оболочка" представляет интерес для получения мультимодальных агентов (например, для люминесцентной и магнитно-резонансной визуализации), адресной доставки лекарств и фотодинамической терапии.…”

Section: поверхностная модификация наночастицunclassified

Люминесцентные Наноматериалы, Допированные Редкоземельными Ионами, И Перспективы Их Биомедицинского Применения (Обзор)

Бажукова¹,

Пустоваров²,

Мышкина³

et al. 2020

Журнал Технической Физики

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Luminescent nanomaterials doped with rare-earth elements are characterized by such physicochemical properties as long-lived luminescence, large Stokes or anti-Stokes shifts, narrow emission bands, high photostability and low toxicity. These materials can be considered as a new generation of biosensors along with conventional molecular probes, such as organic dyes, quantum dots and chelate-based lanthanide probes. In recent years there has been significant interest in the study of functional nanomaterials based on rare earth elements. The purpose of this paper is to provide an overview of recent advances in the development of luminescent inorganic nanoparticles doped with rare earth elements which could be used for biomedical applications.

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“…NPs could be engineered to target cancerous cells and release anticancer drugs therein, thus, avoiding normal cell toxicity that is a bigger obstacle in conventional chemotherapy [1,2]. NPs originating from lanthanide group exhibit remarkable properties owing to their high optical activity, surface reactivity and superior photo stability [3][4][5]. High refractory properties, good thermal conductivity, superior stability and excellent mechanical property make yttrium oxide (Y 2 O 3 ) NPs a fascinating material [6].…”

Section: Introductionmentioning

confidence: 99%

High Surface Reactivity and Biocompatibility of Y2O3 NPs in Human MCF-7 Epithelial and HT-1080 Fibro-Blast Cells

et al. 2020

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This study aimed to generate a comparative data on biological response of yttrium oxide nanoparticles (Y2O3 NPs) with the antioxidant CeO2 NPs and pro-oxidant ZnO NPs. Sizes of Y2O3 NPs were found to be in the range of 35±10 nm as measured by TEM and were larger from its hydrodynamic sizes in water (1004 ± 134 nm), PBS (3373 ± 249 nm), serum free culture media (1735 ± 305 nm) and complete culture media (542 ± 108 nm). Surface reactivity of Y2O3 NPs with bovine serum albumin (BSA) was found significantly higher than for CeO2 and ZnO NPs. The displacement studies clearly suggested that adsorption to either BSA, filtered serum or serum free media was quite stable, and was dependent on whichever component interacted first with the Y2O3 NPs. Enzyme mimetic activity, like that of CeO2 NPs, was not detected for the NPs of Y2O3 or ZnO. Cell viability measured by MTT and neutral red uptake (NRU) assays suggested Y2O3 NPs were not toxic in human breast carcinoma MCF-7 and fibroblast HT-1080 cells up to the concentration of 200 μg/mL for a 24 h treatment period. Oxidative stress markers suggested Y2O3 NPs to be tolerably non-oxidative and biocompatible. Moreover, mitochondrial potential determined by JC-1 as well as lysosomal activity determined by lysotracker (LTR) remained un-affected and intact due to Y2O3 and CeO2 NPs whereas, as expected, were significantly induced by ZnO NPs. Hoechst-PI dual staining clearly suggested apoptotic potential of only ZnO NPs. With high surface reactivity and biocompatibility, NPs of Y2O3 could be a promising agent in the field of nanomedicine.

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Mesoporous multi-silica layer-coated Y2O3:Eu core-shell nanoparticles: Synthesis, luminescent properties and cytotoxicity evaluation

Cited by 52 publications

References 56 publications

Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles

Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles

Люминесцентные Наноматериалы, Допированные Редкоземельными Ионами, И Перспективы Их Биомедицинского Применения (Обзор)

High Surface Reactivity and Biocompatibility of Y2O3 NPs in Human MCF-7 Epithelial and HT-1080 Fibro-Blast Cells

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