Application Case | ATP5020R Spectrometer: Gaining In-Situ Raman Insights into Pollutant Degradation Catalyzed by MBene

2025-12-18

In the fields of water treatment and environmental pollution control, advanced oxidation technologies are highly regarded for their effectiveness in degrading organic pollutants. Recently, two-dimensional MBene materials, the boron analogues of MXenes, have demonstrated exceptional catalytic performance, particularly in activating peroxymonosulfate (PMS). In a published study, researchers successfully constructed a Co-MoAl₁₋ₓB/PMS catalytic system, achieving highly efficient degradation of the typical antibiotic ornidazole (ONZ).

This research employed the Optosky ATP5020R-RM Raman Spectrometer for in-situ monitoring and mechanistic analysis of the degradation process.

01 Raman Spectroscopy: The 'Eye' into Reaction Processes

In this study, researchers utilized the ATP5020R Raman Spectrometer for real-time, in-situ tracking of the PMS activation process on the surface of the Co-MoAl₁₋ₓB catalyst. By monitoring changes in key vibrational peaks, such as those from the O–O and S–O bonds within PMS molecules, the decomposition pathway of PMS and the generation mechanism of reactive species were revealed.

Key findings include:

PMS was rapidly activated on the Co-MoAl₁₋ₓB surface, indicated by a significant weakening of S–O bond signals.
The intensity ratio of the SO₄²⁻ peak to the HSO₅⁻ peak (I₉₇₈/I₁₀₅₇) increased markedly over time, confirming effective PMS decomposition.
The HSO₅⁻ peak shifted from 1057 cm⁻¹ to 1045 cm⁻¹, signifying strong electronic interaction between the catalyst and PMS, which promotes the generation of reactive oxygen species.

These in-situ Raman data provided direct evidence for understanding the synergistic radical and non-radical degradation mechanisms and offered guidance for optimizing catalyst design.

02 ATP5020R Performance Features

Optosky ATP5020R Raman Spectrometer possesses the following advantages, making it an ideal tool for environmental catalysis research:

High Sensitivity & Stability: Delivers clear, highly reproducible spectral signals even within reaction systems.
In-situ Detection Capability: Enables real-time process monitoring without sampling, avoiding interference.
532 nm Laser Source: Well-suited for studying the surface structure of various catalysts and molecular adsorption behaviors.
User-friendly Operation & Intelligent Analysis: Supports rapid spectrum interpretation and kinetic fitting.

03 Research Insights and Environmental Prospects

This study not only successfully applied MBene materials in a PMS catalytic system but also, through advanced characterization techniques like the ATP5020R Raman spectrometer, revealed the intrinsic mechanism behind their high pollutant degradation efficiency. This provides both theoretical and technical support for designing next-generation water treatment catalysts and promoting the application of MBene materials in environmental remediation. Moving forward, Optosky remains committed to collaborating with researchers, leveraging precise and efficient spectral technology to support the development of green technologies and contribute to protecting our environment.

References

Xinyu Zheng, Lunhong Ai, Jia Ran, Sheng Tu, Aike Liu, Jing Jiang, Two-dimensional MBene combined with cobalt nanoparticles enabling highly efficient peroxymonosulfate activation for ornidazole degradation, Separation and Purification Technology, Volume 354, Part 1, 2025, 128647, ISSN 1383-5866, //doi.org/10.1016/j.seppur.2024.128647.

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