関連する実験動画
Updated: Feb 15, 2026

09:58
Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
12.3K
赤光駆動水分裂によるAu (コア) -CdS (シェル) ヘテロエピタキシアル結合の半切りナノエッグ
Shin-Ichi Naya1, Takahiro Kume2, Ryo Akashi2
1Environmental Research Laboratory, Kindai University , 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
Journal of the American Chemical Society
|January 11, 2018
まとめ
研究者らは,新しい半分カットされた金-カドミウム硫化物 (HC-Au@CdS) ナノ卵光触媒を開発しました. この材料は赤色光の下での効率的な水分裂を達成し,人工光合成のための高い外部量子収量を示しています.
科学分野:
- 材料科学
- 光触媒
- 人工光合成
背景:
- ヘテロナノ構造 (HNS) 光触媒は人工合成と水分裂に不可欠です.
- 光触媒の効率は,材料の幾何学,寸法,結合品質によって影響を受けます.
研究 の 目的:
- 新しいHNSプラズモンの光触媒を導入するために,半分カットされたAu (コア) -CdS (シェル) (HC-Au@CdS) のナノエッグ.
- 水分分割の応用を調査する
主な方法:
- 紫外線照射によるAu ナノ粒子 (NP) 負荷の ZnO (Au/ZnO) の製造.
- エピタキシアル (EPI) の関係を持つAu表面に六角形CdSの選択的堆積.
- HC-Au@CdSを生成するために,ZnOサポートの選択的な溶解.
- 赤光照射による水の分裂 (λex = 640 nm).
主要な成果:
- HC-Au@CdSナノエッグの合成が成功し,Au NPのサイズとEPIの結合を保持した.
- 赤光照射で連続したステキオメトリック水分裂を達成した.
- 0.24%という前代未聞の 高い外部量子収量を得ました
結論:
- HC-Au@CdSナノエッグは,HNSプラズモニック光触媒の有望な新しいクラスを表しています.
- 開発された材料は水分解の効率が高く,人工光合成の研究を進めています.
関連する概念動画
The Nucleosome Core Particle
14.6K
Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
14.6K
P-N junction
1.4K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.4K
¹H NMR: Complex Splitting
1.9K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.9K
Light as Energy
96.4K
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...
96.4K
Red Algae
1.1K
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
1.1K
Cut-off Frequency of BJT
1.4K
Cut-off frequencies in Bipolar Junction Transistors (BJTs) mark the transition between the signal's pass band and stop band, influencing their performance in amplifying or attenuating frequencies. These frequencies are crucial for designing BJTs to meet specific operational requirements in electronic circuits.
Alpha Cut-Off Frequency: Pertinent to the common-base configuration, the alpha cut-off frequency defines the upper-frequency limit at which the current gain, alpha, remains stable. As...
Alpha Cut-Off Frequency: Pertinent to the common-base configuration, the alpha cut-off frequency defines the upper-frequency limit at which the current gain, alpha, remains stable. As...
1.4K

