一种普鲁士蓝表面刻蚀的方法及其在回收铂金属中的应用
By using an etching method that controls the Fe valence ratio on the surface of Prussian blue, the adsorption capacity and kinetics of Prussian blue material when adsorbing platinum metal were solved, thereby improving the material's adsorption capacity and simplifying the preparation process.
CN117778722BActive Publication Date: 2026-07-17UNIV OF CHINESE ACAD OF SCI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF CHINESE ACAD OF SCI
- Filing Date
- 2023-12-26
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing Prussian blue materials have small adsorption capacity, slow adsorption kinetics, and low recycling rate when adsorbing platinum metal, which limits their application in platinum metal recycling.
Method used
The preparation process is simple, and the adsorption capacity is increased to twice that of the raw material by using an etching method that controls the Fe valence ratio on the Prussian blue surface.
Benefits of technology
The study achieved high adsorption performance and a simple preparation process for Prussian blue materials, making them suitable for the recovery of platinum metal.
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Figure CN117778722B_ABST
Abstract
本发明公开了一种普鲁士蓝表面刻蚀的方法及其在回收铂金属中的应用，属于环境功能材料和稀贵金属回收新技术领域，称取12mmol的三氯化铁(FeCl3)和9mmol的亚铁氰化钠(Na4[Fe(CN)6])，各溶于25mL的超纯水，采用共沉淀的方式合成普鲁士蓝材料。取0.5g的材料倒入60mL浓度为X mol(X＝0.5、1、2、4)盐酸中，超声1小时后静置4小时；倾倒上层液体后用超纯水洗涤、离心分离3次；在60℃烘箱中烘干；本发明材料制备过程所使用的原料来源广泛、廉价易得；制备过程简单、易控，容易进行批量化生产；仅通过调节盐酸浓度，构建不同刻蚀程度的普鲁士蓝材料；刻蚀作用可以调节材料表面的Fe价态比例有效提高吸附容量。
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