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相关概念视频

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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相关实验视频

Updated: Jun 23, 2026

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
15:08

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Published on: September 20, 2012

在电化学控制的ReS2表面氧化过程中,非线性光学吸收反应.

Yanqing Ge1, Chunhui Lu1, Guorong Xu1

  • 1Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon-Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, School of Physics, Northwest University, Xi'an 710069, China.

Nano letters
|May 2, 2025
PubMed
概括

我们开发了一种现场电化学Z扫描技术,以控制2D半导体的表面氧化,如ReS2. 该方法可以监测氧化过程中非线性光学性质的变化,从而实现精确的材料调整.

关键词:
在现场电化学Z-扫描系统.非线性吸收过渡的过渡.可以和的吸收.表面氧化过程中的表面氧化.两个光子吸收的吸收.

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Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
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Last Updated: Jun 23, 2026

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

Published on: September 20, 2012

Probing Surface Electrochemical Activity of Nanomaterials using a Hybrid Atomic Force Microscope-Scanning Electrochemical Microscope (AFM-SECM)
08:31

Probing Surface Electrochemical Activity of Nanomaterials using a Hybrid Atomic Force Microscope-Scanning Electrochemical Microscope (AFM-SECM)

Published on: February 10, 2021

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Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy

Published on: May 12, 2023

科学领域:

  • 材料科学 材料科学 材料科学
  • 化学 化学 化学
  • 物理 物理学 物理

背景情况:

  • 2D半导体的表面功能精确调整电子和光学性能.
  • 探索氧化依赖的非线性光学性质受到缺乏现场表征技术的限制.

研究的目的:

  • 开发一种现场技术,用于控制和监测二维半导体的氧化介导非线性光学特性.
  • 为了研究电化学氧化过程中ReS2中非线性吸收的过渡.

主要方法:

  • 开发了一种电化学方法,用于选择性地表氧化ReS2.
  • 集成电化学氧化与Z扫描设置,以创建一个现场电化学Z扫描系统.
  • 利用理论计算 (波段对齐,状态密度) 来支持实验发现.

主要成果:

  • 通过电化学方法成功控制了ReS2的表面氧化.
  • 观察到非线性吸收从两光子吸收到和吸收的过渡,氧化增加.
  • 证明了ReS2的两光子吸收减少,而ReO3的和吸收增加.

结论:

  • 在现场开发的电化学Z扫描技术有效控制表面氧化和监测非线性光学特性.
  • 这种技术提供了一种简单的,非破坏性的方法来研究二维材料中的氧化效应.
  • 这些发现为通过受控氧化调整二维半导体的光电子特性提供了洞察力.