持久的天然尿液电解通过易斯酸量身定制的界面微环境实现
Xintong Gao1, Jun Hu2, Shuai Zhang1
1School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.
Advanced materials (Deerfield Beach, Fla.)
|December 8, 2025
概括
这项研究引入了一种新的催化剂修改策略,用于尿液氧化反应 (UrOR),以有效和稳定地产生. 增强的催化剂克服了尿液.
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
- 催化剂是一种催化剂.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 电化学尿素氧化 (UOR) 是生产的氧化演化反应 (OER) 的可行替代方案.
- 使用天然尿液进行尿液氧化反应 (UrOR) 提供了无成本的原料,但面临着催化剂降解和化物腐蚀等挑战.
- 现有的催化剂在复杂的尿液矩阵中缺乏稳定性,阻碍了实际应用.
研究的目的:
- 开发一种使用天然尿的尿氧氧化反应 (UrOR) 的稳定有效的催化剂.
- 为解决UrOR.中的催化剂酸化和化物诱导的腐蚀问题.
- 为了证明从尿液电解中大规模生产的可行性.
主要方法:
- 用硬的易斯酸 (LA) 修改Ni2P催化剂,以创建一个界面微环境.
- 合成V2O5-δ-Ni2P混合催化剂. 这种催化剂可以在
- 在天然尿液中进行电化学测试,机械分析,并在接近千瓦级的流电解仪中进行验证.
主要成果:
- 最优的V2-O5-δ-Ni2-P混合催化剂实现了高UOR活性 (1.62V在3A cm-2) 和长期耐用性 (1000小时).
- 易斯酸成分丰富了界面OH,抑制了杂质吸附 (特别是Cl) 和N-尿素的形成.
- 一个接近千瓦级的流量电解器 (18个细胞) 产生了115.84Lh-1H2与97.41%的尿液净化和回收的NHCl/KCl肥料.
- 电解仪在各种尿素和化物度中显示出广泛的适用性,包括具有挑战性的废水废水.
结论:
- 通过路易斯酸修饰进行界面微环境调节是提高UrOR催化剂稳定性和活性的有效策略.
- 开发的催化剂和系统能够从天然尿液中有效,稳定地产生气,再加上废水净化和肥料回收.
- 这项工作验证了大规模的尿液电解,并突出了其在可持续气生产和资源回收方面的潜力.
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