含有Cr的污泥的高价值利用:来自含有Cr的污泥的性介质中高效的OER的环保和超低成本电催化剂
Qiangqiang Lu1, Qingxin Han1, Xuechuan Wang2
1College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, Shaanxi, China; Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, 710021, Shaanxi, China.
Journal of environmental management
|September 21, 2023
概括
这项研究将含的危险污泥转化为氧化演化反应 (OER) 的超低成本电催化剂. 开发的催化剂表现出卓越的稳定性和活性,促进可持续的废物回收和能源解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 环境科学 环境科学
背景情况:
- 经济可持续的发展需要先进的废物回收解决方案.
- 含的污泥对环境构成危害,需要有效的利用策略.
- 开发环保和经济高效的电催化剂对于可持续能源至关重要,特别是对于性介质中的氧化演化反应 (OER).
研究的目的:
- 从含的污泥中开发一种超低成本的电催化剂.
- 为了优化电催化剂的制备条件.
- 评估电催化剂对氧演化反应 (OER) 的性能,并了解底层机制.
主要方法:
- 从含的污泥中合成一个电催化剂.
- 优化催化剂制备通过变化的化温度和乙烯基酸盐加载.
- 催化剂的OER活性和稳定性在性介质中的电化学表征.
- 密度函数理论 (DFT) 计算以调查反应机制和的作用.
主要成果:
- 从含的污泥中成功制备了一种优化的电催化剂.
- 催化剂表现出极好的稳定性和出色的OER活性,在10 mA cm-2.2时具有320 mV的超电位.
- DFT的计算证实,异质结构和的存在降低了OER能源障碍.
结论:
- 含的污泥可以重新用于OER的高效和低成本电催化剂.
- 这种"废物到宝藏"的方法为危险废物管理提供了可持续的解决方案,同时推进了能源技术.
- 这些发现为将含有Cr的废物加工成有价值的高性能电催化剂铺平了道路.
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