A method for microwave-assisted synthesis of FeS2 / MoS2 composite material and application thereof in photo-thermal catalytic reduction of CO2

The preparation of FeS2/MoS2 composite materials by microwave hydrothermal method solves the problem of low interfacial charge separation efficiency in the photothermal catalytic CO2 reduction process of FeS2 and MoS2 composite materials, and achieves highly selective CO generation, which has good prospects for industrial application.

CN122141700APending Publication Date: 2026-06-05CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU UNIV
Filing Date
2026-02-25
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In the existing technology, FeS2 and MoS2 composite materials have low interfacial charge separation efficiency and difficulty in product selectivity control during photothermal catalytic CO2 reduction. The photo-thermal synergistic mechanism is unclear, and traditional bonding strategies are difficult to achieve highly selective CO generation.

Method used

FeS2/MoS2 composite materials were prepared by microwave hydrothermal method. By growing MoS2 in situ on the FeS2 surface, Fe-S-Mo bridging bonds were formed, and two-dimensional/two-dimensional heterojunctions were constructed to achieve efficient electron transport and photothermal synergy.

Benefits of technology

It significantly improves the activity and selectivity of CO2 reduction to CO, and the material is inexpensive and widely available, showing good prospects for industrial application.

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Abstract

The present application relates to the technical field of photo-thermal catalytic materials, and discloses a method for microwave-assisted synthesis of FeS2 / MoS2 composite materials and application of the FeS2 / MoS2 composite materials in photo-thermal catalytic reduction of CO2.The present application obtains FeS2 nanosheets by pretreating natural pyrite, and then adds a molybdenum source and a sulfur source to prepare MoS2 / FeS2 photo-thermal catalytic composite materials by microwave hydrothermal synthesis.The present application promotes in-situ growth of MoS2 on the surface of FeS2 by microwave heating, MoS2 and FeS2 both exist in the form of two-dimensional nanosheets, and there is a stable two-dimensional / two-dimensional heterojunction interface with an atomic-level Fe-S-Mo chemical bond.The structure not only widens the spectral absorption range, but also uses the interface chemical bond as an electron transport channel to improve the interface charge separation efficiency and photo-thermal conversion capacity, so that CO2 can be efficiently reduced to CO2, thereby providing a new technology for resource utilization of CO2.
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