プラズモンの酸化モリブデン混合体に対する硫化物の軽度な脱酸素化,可視光下での劇的な活性増強
Yasutaka Kuwahara1,2, Yukihiro Yoshimura1, Kohei Haematsu1
1Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University , 2-1 Yamada-oka , Suita , Osaka 565-0871 , Japan.
Journal of the American Chemical Society
|June 19, 2018
まとめ
この研究では,プラズモニック水素モリブデン銅とプラチナナノ粒子 (Pt/HxMoO3−γ) の結合した新しい触媒を導入した. この触媒は,可視光を用いて硫化物を効率的に脱酸素化し,硫化物のよりグリーンな合成を提供します.
科学分野:
- 材料科学
- カタリシス
- 写真化学
背景:
- 有機合成のための太陽光採集は 重要な課題です
- 高貴な金属と結合したプラズモニック酸化物材料は,効率的な太陽エネルギー利用の有望な経路を提供します.
研究 の 目的:
- 効率的な太陽光による有機合成のための 新しいプラズモンの触媒を実証する
- Pt/HxMoO3−γの可視光の下での硫化物の脱酸素化における触媒性能とメカニズムを調査する.
主な方法:
- プラズモニックモリブデン酸化物混合体 (Pt/HxMoO3−γ) の合成は,容易なH流出プロセスを経て行われます.
- 室温でH2を用いた硫化物とピリジンN酸化物の触媒性脱酸素化
- 可視光照射と暗い環境での比較試験
- 酸素の空位とリドックス性質の特徴を含む包括的な分析.
主要な成果:
- Pt/HxMoO3−γは,硫黄酸化物の脱酸素化において高い触媒性能を示し,可視光の下での活動が著しく強化される.
- 触媒は,様々な硫化物とピリジンN酸化物に対する優れた選択性を示しています.
- H流出によって生じる酸素の空白は,重要な活性部位として特定されています.
- 反応には,556 nm 周辺の強いプラズモンの吸収と可逆性 Mo 還酸化特性が不可欠である.
結論:
- 開発されたPt/HxMoO3−γ触媒は,穏やかな条件下で硫化物から硫化物を生産するための効率的でグリーンなプロトコルを提供します.
- 可視光照射は触媒効率を大幅に高め,効率的な太陽エネルギー利用を示しています.
- この研究は,化学合成で可視光を利用するためのプラズモンベースの触媒システムの設計に新しい道を開きます.
関連する概念動画
Oxidation Numbers
42.9K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.9K
Hybrid Zones
22.0K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
22.0K
Pyruvate Oxidation
169.1K
After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
169.1K
Hybridization of Atomic Orbitals I
67.7K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
67.7K
Hybridization of Atomic Orbitals II
49.2K
sp3d and sp3d 2 Hybridization
49.2K
Light as Energy
96.1K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
96.1K


