对LED元件的回收和特征的先进方法
Moheddine Wehbie1, Stéphanie Delannoy1, Fan Sun1
1Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 11 Rue Pierre et Marie Curie, 75005 Paris, France. moheddine.wehbie@chimieparistech.psl.eu.
Dalton transactions (Cambridge, England : 2003)
|September 19, 2025
概括
这项研究开发了一种新的方法来分析发光二极管 (LED) 组件,包括和金属. 该技术精确地确定废弃和商业LED的元素组成,用于回收和材料表征.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 发光二极管 (LED) 在照明和电子产品中很普遍.
- 描述LED复杂成分对于回收和材料回收至关重要.
- 现有的方法往往难以准确量化像和金属这样的个体成分.
研究的目的:
- 引入一种新的分析方法,用于精确地表征单个LED组件.
- 开发一种方法来选择性地回收嵌入在聚二甲基素 (PDMS) 中的.
- 来自不同来源的各种LED组件的重力学组成的确定.
主要方法:
- 来自商业和废弃来源的各种LED类型 (SMD,COB,灯丝) 的拆卸.
- 从PDMS中通过使用四甲基化物 (TBAF/THF) 进行脱聚合的选择性回收.
- 使用扫描电子显微镜与能量分散式X射线光谱 (SEM-EDX) 和诱导合等离子体 - 原子发射光谱 (ICP-AES) 进行元素分析.
主要成果:
- 在 (Y, Sr, Eu, Lu, Ce, Al, Ga, Ca) 和金属体 (Au, Ag, Ni, Cu, Fe) 中确定了关键元素.
- 在LED外中的定位 (Ti).
- 成功量化了,PDMS,金属分数和外的重力度组成.
结论:
- 开发的方法使得LED组件的精确组成分析成为可能.
- 这种方法有助于有效地回收材料和回收来自LED的有价值元素.
- 这项研究为了解LED废物流中的材料流提供了基础.
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