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Scanning chemical reaction microscopic imaging method and application

A technology of chemical reaction and microscopic imaging, which is applied in the field of scanning chemical reaction microscopic imaging, can solve the problem that the detection and characterization of chemical reaction activity with spatial resolution cannot be realized.

Inactive Publication Date: 2021-05-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the spatially resolved detection and characterization of the chemical reactivity occurring on the sample surface has so far not been possible

Method used

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  • Scanning chemical reaction microscopic imaging method and application
  • Scanning chemical reaction microscopic imaging method and application
  • Scanning chemical reaction microscopic imaging method and application

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Embodiment 1

[0038] A scanning chemical reaction microscopic imaging method, such as figure 1 Shown is the working principle diagram of the scanning chemical reaction microscopy imaging device. The device for scanning chemical reaction microscopic imaging includes the following functions: 1) probe scanning micro-region sampling and sample environment control functions ( figure 1 Right); 2) Molecular ionization and high-sensitivity mass spectrometry analysis function ( figure 1 left).

[0039] Among them, the probe scanning micro-area sampling and sample environment control functions include: scanning probe control function, sample positioning and movement control function, sample environment control function, and nano-probe micro-area sampling function. Then realize the following functions: the precise positioning and scanning function of the sampling nanoprobe, which is used for the micro-area sampling of the reactant species in the three directions of XYZ on the sample surface; the pre...

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Abstract

The invention discloses a scanning chemical reaction microscopic imaging method and application, and belongs to the technical field of material testing instruments. The micro-area sampling of chemical reaction species on the surface of a sample is carried out by utilizing a hollow nano-probe capable of accurately scanning and positioning, and the micro-imaging research on the chemical reaction performance of the solid surface is realized by combining the accurate transfer and high-sensitivity mass spectrum detection analysis of the sampled species. The system comprises a precise positioning and scanning function of the hollow nanoprobe, a micro-area sampling function of the hollow nanoprobe, a precise transfer function of micro-area sampling, an ionization function of efficient and high-selectivity sampling species, a high-sensitivity and high-resolution ion analysis and detection function and a sample surface environment and reaction atmosphere control function. The method is a method for spatially distinguishing and detecting distribution of surface chemical reaction species including atoms, molecules, free radicals and the like on the surface in X, Y and Z dimensions, and a microscopic imaging function with surface or interface chemical reaction performance distinguished by hundreds of nanometers to dozens of nanometers is achieved.

Description

technical field [0001] The invention relates to a scanning chemical reaction microscopic imaging method and its application, belonging to the technical field of material testing instruments. Background technique [0002] The understanding of the nature of energy chemistry and heterogeneous catalysis and the regulation of the process need to face the following two challenges: 1) In situ dynamic and high-resolution characterization of the surface and interface structures of energy materials and solid catalysts in working state ; 2) High-resolution and high-sensitivity detection can be performed on the distribution of product molecules and reaction intermediates (such as free radicals) on the surface of the solid surface in the three dimensions of X, Y, and Z. The active surface and interface structure of solid catalysts has the characteristics of nanoscale and dynamic changes, so the in-situ dynamic characterization of the catalyst structure urgently needs to be carried out un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01Q60/00G01Q10/04G01N27/64
CPCG01N27/64G01Q10/04G01Q60/00
Inventor 傅强谭大力包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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