Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

13.0K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
13.0K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

2.2K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
2.2K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.9K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.9K
Photosystem I01:27

Photosystem I

69.4K
Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
69.4K
Photosystem II01:22

Photosystem II

78.3K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
78.3K
Oxygenic Photosynthesis01:26

Oxygenic Photosynthesis

690
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
690

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Detection of seizurogenic compounds in human and rat neurons in vitro: a multi-laboratory, multi-model assessment.

Neurotoxicology·2026
Same author

<i>Asplenium yishuiensis</i> (Aspleniaceae), a New Wintergreen and Medicinal Fern from Northern China, Achieves Freezing Tolerance via a Calcium-Mediated Osmotic Adjustment Pathway.

Plants (Basel, Switzerland)·2026
Same author

Differential analysis of Short chain fatty acids incubation in autistic organoids based on transcriptome sequencing.

PloS one·2026
Same author

Ameliorative effects and mechanisms of Inonotus hispidus on PCOS via regulation of gut microbiota-ovarian metabolism axis and ferroptosis inhibition.

The Journal of steroid biochemistry and molecular biology·2026
Same author

Wafer-scale and doping-tunable p-type semiconducting monolayer WSi<sub>2</sub>N<sub>4</sub> film.

National science review·2026
Same author

Association between multiple health behaviors and mental health in Chinese college students: a cross-sectional study.

Frontiers in public health·2026

相关实验视频

Updated: Jan 12, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.9K

协同作用的多重电荷载体转移途径为高效可见光驱动的进化.

Xiaobo Han1,2,3, Hengbin Zhao1,2,3, Huixuan Wang1,2,3

  • 1School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, 014010, China.

Small (Weinheim an der Bergstrasse, Germany)
|November 7, 2025
PubMed
概括

像In2O3/CdS/NiSe2这样的三极异构增强了光催化的进化. 优化共催化剂加载可以创建多个电荷传输路径,显著提高清洁能源生产的效率.

关键词:
S-scheme异构连接的异构连接的进化 的进化 的进化迁移效率 迁移效率是指迁移效率是指迁移效率.通过多个电荷载体传输路径.

更多相关视频

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

643
Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.6K

相关实验视频

Last Updated: Jan 12, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.9K
Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

643
Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.6K

科学领域:

  • 材料科学 材料科学 材料科学
  • 光催化作用的光催化
  • 可再生能源可再生能源是可再生能源.

背景情况:

  • 阶段方案 (S方案) 异质连接通过增强电荷转移来改善可见光光催化.
  • 与战略性催化剂加载的第三级半导体集成是高效光催化演变的关键.
  • 了解电荷转移通路对于设计先进的光催化材料至关重要.

研究的目的:

  • 为了合成和研究In2O3 / CdS / NiSe2和In2O3 / NiSe2 / CdS异构结构.
  • 阐明S方案的电荷转移机制,并确定共催化剂加载的作用.
  • 在可见光下评估合成材料的光催化演化效率.

主要方法:

  • 序列沉积CdS和NiSe2到In2O3纳米板上.
  • 在现场照射的X射线光电子光谱 (XPS) 和电子磁共振 (EPR) 用于电荷转移分析.
  • 电荷密度差异分析,光电化学测量和吉布斯自由能量计算.

主要成果:

  • 在In2O3/CdS系统和In2O3/NiSe2/CdS系统中确认了S方案的费用转移.
  • 与In2O3/CdS/NiSe2 (一种通路) 相比,In2O3/CdS/NiSe2表现出三种电荷转移通路,增强了电子迁移.
  • 在In2O3/CdS/NiSe2中,的演化速率达到了16797.1μmolg-1,几乎是In2O3/NiSe2/CdS (3,902.4μmolg-1) 的四倍.

结论:

  • 催化剂的加载顺序显著影响电荷转移路径和光催化效率.
  • 在In2O3/CdS/NiSe2中,多个电荷转移通路,加上最佳的Ni吸附特性,增强了的演化.
  • 这项研究为设计可见光驱动光催化效率高的三元异质连接提供了一个框架.