通过水热介导的现场兴奋剂来制备生物炭,以增强微生物燃料电池中的氧降解反应
Shiteng Tan1, Ruikun Wang1, Jialiang Dong1
1Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China; Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China.
Bioresource technology
|November 11, 2024
概括
来自水生植物的添加生物炭为微生物燃料电池 (MFC) 提供了具有成本效益的催化剂. 这种新型材料增强了氧气的减少,提高了MFC功率密度.
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:
- 添加碳材料是微生物燃料电池 (MFC) 的有希望的阴极催化剂.
- 关键的挑战包括降低成本和增加电催化活性功能组.
- 水生植物为生物炭生产提供了可持续的来源.
研究的目的:
- 开发一种具有成本效益的方法,从水生植物中生产化生物炭.
- 调查合成材料的氧降解反应 (ORR) 的电催化活性.
- 评估化生物炭作为MFC中的阴极催化剂的性能.
主要方法:
- 使用水生植物,采用水热介导的现场兴奋剂方法.
- 水热处理在碳结构中定了原子.
- 随后的热解将炭转化为酸化生物炭催化剂 (HC-N+PY).
主要成果:
- 准备好的HC-N+PY催化剂表现出优越的氧降解反应 (ORR) 活性,半波电位为0.82V.
- 配备HC-N+PY的MFC实现了1444mW/m2的峰值功率密度.
- 理论计算证实了由于石墨和C-O组的协同作用而增强的O2吸附和质子化.
结论:
- 来自水生植物的化生物炭是MFCs的高效和潜在的低成本催化剂.
- 开发的热水和热解方法成功创建了催化活性站点.
- 这项研究表明了可持续的MFC催化剂开发的有希望的途径.
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