Physico-chemical properties of selenium–tellurium alloys across the scales

Geoffrion, Luke D.; Guisbiers, Grégory

doi:10.1039/d1na00087j

Cited by 16 publications

(14 citation statements)

References 74 publications

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“…Tellurium(Te) is one of the rarest chemical elements in the Earth’s crust. − Its large absence on Earth finds its origin in Earth’s formation when Te is bound to hydrogen to form tellurium hydrides. Earth’s gravity was not strong enough to retain these highly volatile hydrides, and most Te escaped into space, making it rare on Earth but not in the Universe .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of “Naked” TeO₂Nanoparticles for Biomedical Applications

et al. 2022

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Chalcogenide nanoparticles have become a very active field of research for their optoelectronic and biological properties. This article shows the production of tellurium dioxide nanoparticles (TeO 2 NPs) by pulsed laser ablation in liquids. The produced nanoparticles were spherical with a diameter of around 70 nm. The energy band gap of those nanoparticles was determined to be around 5.2 eV. Moreover, TeO 2 NPs displayed a dose-dependent antibacterial effect against antibiotic-resistant bacteria such as multidrug-resistant Escherichia coli (MDR E. coli ) and methicillin-resistant Staphylococcus aureus (MR S. aureus ). The “naked” nature of the nanoparticle surface helped to eradicate the antibiotic-resistant bacteria at a very low concentration, with IC50 values of ∼4.3 ± 0.9 and 3.7 ± 0.2 ppm for MDR E. coli and MR S. aureus , respectively, after just 8 h of culture. Further, the IC50 values of the naked TeO 2 NPs against melanoma (skin cancer) and healthy fibroblasts were 1.6 ± 0.7 and 5.5 ± 0.2 ppm, respectively, for up to 72 h. Finally, to understand these optimal antibacterial and anticancer properties of the TeO 2 NPs, the reactive oxygen species generated by the nanoparticles were measured. In summary, the present in vitro results demonstrate much promise for the presently prepared TeO 2 NPs and they should be studied for a wide range of safe antibacterial and anticancer applications.

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Section: Introductionmentioning

confidence: 99%

Synthesis of “Naked” TeO₂Nanoparticles for Biomedical Applications

et al. 2022

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“…Other scholars comprehensively investigated the biosensing application of 2D layered materials and the impact of doping on biosensing functionality of these materials [63][64][65] . The enhancement of physicochemical properties of Se have been also extensively explored using its alloying with other compounds such as Te 66 . Functionalization of SeNPs can also transform their bandgap and make them promising candidates for optoelectronic devices 55 .…”

Section: Selenium Properties and Their Potential In Enhanced Biosensi...mentioning

confidence: 99%

“…[63][64][65] The enhancement of physicochemical properties of Se have been also extensively explored using its alloying with other compounds such as Te. 66 Functionalization of SeNPs can also transform their bandgap and make them promising candidates for optoelectronic devices. 55 All these efforts have shown that the tunability of Se-based nanomaterials can easily overcome some of the limitations present in other biosensors based on different metals.…”

Section: Review Materials Advancesmentioning

confidence: 99%

Selenium-based nanomaterials for biosensing applications

et al. 2022

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“…34 Nowadays, these branches develop advanced methods and can be divided into four categories, that is, clas-sication, regression, clustering, and dimensionality reduction. [35][36][37][38][39][40][41][42][43][44] The algorithms for these branches include support vector machine (SVM), k-nearest neighbor (kNN), decision tree (DT), convolutional neural network (CNN), k-means, PCA, etc. [45][46][47][48][49][50] These algorithms have been well employed in SEIRA and SERS.…”

Section: Introductionmentioning

confidence: 99%