一种应用于光催化固氮的Ni / NiO@C纳米片负载单原子钴材料的制备方法

By preparing Ni/NiO@C nanosheet-supported single-atom cobalt catalysts, the problems of low yield and high cost of precious metals in photocatalytic nitrogen fixation were solved, achieving efficient full nitrogen fixation reaction and high nitric acid product distribution, thus improving economic and environmental benefits.

CN118594544BActive Publication Date: 2026-07-17NORTHWEST UNIVERSITY FOR NATIONALITIES

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWEST UNIVERSITY FOR NATIONALITIES
Filing Date
2024-06-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing photocatalytic nitrogen fixation technology suffers from low yield, uneven distribution of nitric acid products, and high cost of precious metals, which limits its commercial application and economic benefits.

Method used

A one-pot method was used to prepare a cobalt-supported Ni/NiO@C nanosheet catalyst. Cobalt atoms were anchored onto the Ni/NiO@C nanosheets through mechanical grinding and calcination to form a Co-Ni/NiO@C photocatalyst. This photocatalyst was then used to achieve the reaction pathway N2→NH3→HNO3 under photocatalysis.

Benefits of technology

It improves the economic benefits of photocatalytic nitrogen fixation, achieves a highly efficient all-nitrogen fixation reaction, has a high distribution of nitric acid products, reduces preparation costs, and has good agricultural and environmental protection effects.

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Abstract

本发明公开一种Ni / NiO@C纳米片负载单原子钴光催化剂的制备方法,采用一锅法将钴原子锚定在Ni / NiO@C纳米片(Co‑Ni / NiO@C)上。在光催化的第一个小时内,该光催化剂的N元素转化速率和NO3‑生成速率分别达到179.5μmol·gcat‑1·h‑1和110.8μmol·gcat‑1·h‑1,表现出优异的光催化性能。X射线吸收光谱(XAFS)证实,Co元素通过单原子的形式,锚定在Ni / NiO@C载体上。本发明制备的催化剂实现了N2→NH3→HNO3的反应路径,提高了光催化固氮的经济效益,对农业生产和环境保护都具有积极的影响。
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