从使用过的离子电池中回收石墨,用于H2O2电合成
Jucai Wei1, Xi Wang1, Xu Wu2,3
1School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
Environmental science and pollution research international
|August 22, 2023
概括
从废旧电池中回收的石墨被转化为环境友好的催化剂,用于现场合成过氧化 (H2O2). 这种可持续的方法有效地处理废水,消除了92%的化学氧气需求.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 通过氧降解反应在现场合成过氧化 (H2O2),对于环境修复至关重要.
- 来自离子电池的消耗石墨是一种处置挑战,也是资源回收的机会.
研究的目的:
- 开发一种可持续且成本效益高的方法,用废旧石墨制备H2O2电合成催化剂.
- 研究再生石墨作为H2O2生成和废水处理的催化剂的有效性.
主要方法:
- 从离子电池中回收使用的石墨.
- 使用酸 (HNO3) 激活石墨,以引入碳素 (-COOH) 和 (C-O-C) 功能组.
- 使用活性石墨催化剂进行H2O2的电化学合成.
主要成果:
- 激活石墨催化剂实现了高的H2O2法拉代效率,约为80%.
- 与原始废旧石墨相比,催化剂在生产H2O2方面表现出显著的活性和选择性.
- 在T酸废水处理中的应用导致近92%的化学氧气需求被消除.
结论:
- 消耗的石墨可以有效地回收,成为H2O2电合成的环保和经济高效的催化剂.
- 活性石墨催化剂显示出环境修复的巨大潜力,特别是在工业废水处理方面.
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