废塑料再循环用于高效的H2O2生产和通过Ni-Co/碳纳米管复合材料的回收
Baolong Qiu1, Mengjie Liu2, Xin Qu3
1Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang, 110819, P. R. China.
Nature communications
|July 31, 2024
概括
本研究介绍了一种绿色热解方法,用于回收废离子电池 (LIB) 和塑料. 该过程产生了可贵的纳米级NiCo合金@碳纳米管 (CNTs),用于高效的过氧化生产.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 催化剂是一种催化剂.
背景情况:
- 废弃的离子电池 (LIB) 和低密度聚乙烯 (LDPE) 塑料带来了重大处理和管理挑战.
- 有效的回收利用策略对于资源回收和环境保护至关重要.
研究的目的:
- 为共同处理废弃物LIBs和LDPE塑料开发一种协同火解方法.
- 将废弃物利用成有价值的产品,特别是纳米级的尼科合金@碳纳米管 (CNT).
- 研究用于电化学应用的合成材料的催化性能.
主要方法:
- 在一个密封的反应堆中,从LIBs中废弃的过渡金属氧化物和废弃的LDPE塑料的协同热解.
- LiNi0.6Co0.2Mn0.2O2和LDPE的联合热解以合成纳米级的NiCo合金@CNTs.
- 对于氧降解反应 (ORR) 的NiCo合金@CNTs的电化学表征.
- 密度函数理论 (DFT) 计算以了解催化机制.
主要成果:
- 成功地从废弃物LIB中分离了和过渡金属.
- 制备纳米级的NiCo合金@CNTs,具有优良的催化活性 (Eonset ≈ 0.85 V) 和选择性 (~90%) 通过ORR进行H2O2生产.
- 识别尼科纳米合金核心和含氧的功能组在CNT上作为催化性能的关键因素.
结论:
- 开发的协同热解是一种简单而绿色的方法,用于回收废弃LIBs和LDPE塑料.
- 合成的NiCo合金@CNTs显示出作为H2O2生产的电催化剂的有希望的潜力.
- 这种方法为废物管理和资源回收提供了可持续的解决方案.
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