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Исторические Цена Silver Gold
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2024/09/19
| USD / унция | |
| Gold | 2590.6 | |
| Silver | 31.16 |
Gold Исторические Диаграмма Цена золота и график
360 день график ,
1 Ounce Gold=? USD
Silver Исторические Диаграмма Цена серебра и график
360 день график ,
1 Ounce Silver=? USD
золото новости:
- Platinum clusters with precise numbers of atoms for . . . - Nature
We now show the atom-precise and fully scalable synthesis of platinum clusters on a milligram scale from tiara-like platinum complexes with various ring numbers (n = 5–13)
- Eight-electron Pt Cu superatom encapsulating three . . . - Science
We hereby report an unprecedented Pt-centered, eight-electron superatomic copper nanocluster, PtH 3 Cu 23 (iso-propyl-PhS) 18 (PPh 3) 4 (abbreviated as PtH 3 Cu 23 hereafter), that encapsulates three electron-donating hydrides
- Utilization of platinum nanoclusters (Ptn (n ≤ ca. 15)) as a co . . .
In this study, we have fabricated a new type of particulate photocatalysts deposited with platinum (Pt) nanoclusters consisting of approximately 15 atoms or fewer as a co-catalyst and evaluated the H 2 evolution activities from an aqueous solution
- Carbon‐Embedded Pt Alloy Cluster Catalysts for Proton Exchange Membrane . . .
In this study, we report carbon-embedded Pt alloy cluster catalysts Their activity and durability were tested in both RDE and MEA setups When polystyrene-based polymer was carbonized with transition metal then Pt was deposited and reduced, Pt alloy clusters with ≈1 5 nm in size were obtained as embedded within the carbon surface
- Platinum clusters with precise numbers of atoms for preparative-scale . . .
We now show the atom-precise and fully scalable synthesis of platinum clusters on a milligram scale from tiara-like platinum complexes with various ring numbers (n = 5–13)
- Magic-sized CdSe nanoclusters: a review on synthesis, properties and . . .
The first report on magic-sized nanoclusters of CdSe gave impetus to deepen the understanding of the sub 2 nanometer (<2 nm) dimension regime of II–VI semiconductor quantum dots, which have been vastly documented in the last four decades
- Magic-Size Semiconductor Nanostructures: Where Does the Magic Come from . . .
Reactions conducted with 1 0 equiv of DPPSe lead to a cluster with a lowest energy electronic transition at 418 nm (d ≈ 1 5 nm, ε(418 nm) = 189,000 ± 27,000 M-1 cm-1) and a broad (fwhm = 0 75 eV) and intense white light emission profile (ΦPL = 0 11(03))
- Photo-Crosslinking of Doped Magic-size Nanocluster for the Construction . . .
wavelengths of 488 nm (~20 mW) from a Ar-ion laser were selectively used to excite the (CdS) 34 MSCs
- Magic number colloidal clusters as minimum free energy . . . - Nature
Here we show that magic number clusters exist in a confined soft matter system with negligible interactions Colloidal particles in an emulsion droplet spontaneously organize into a series of
- Pt nanocluster-catalyzed hydrogen evolution reaction: Recent advances . . .
Numerous studies has been manipulated on platinum (Pt)-based catalysts, which exhibit superior performance in hydrogen evolution reactions Within this category, Pt nanoclusters stand out due to their unique attributes, such as quantum size effects and unique coordination environments
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