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构建核心外结构的Co₃O₄-MnWO₄复合光电极,具有优越的PEC净水性能

Hongchao Ma¹, Xiaohui Lu¹, Xinya Luo¹

¹School of Light Industry & Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian, 116034, PR China.

|March 13, 2024

概括

一个新的核心外Co3O4-MnWO4光电极有效地使用半导体光电催化 (PEC) 从废水中去除有机污染物. 这种先进的氧化过程 (AOP) 证明了高效率和稳定性,使得水更清洁.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
电化学电化学电化学

背景情况:

半导体光电催化 (PEC) 技术对于废水处理中的先进氧化过程至关重要.
选择有效的半导体光电极极极对于优化污染物降解中的PEC性能至关重要.

研究的目的:

开发一个核心外结构的Co3O4-MnWO4光电极,用于加强有机污染物的PEC去除.
评估新型光电极在处理真实废水中的效率,稳定性和实用性.

主要方法:

采用双步热水过程合成了Co3O4-MnWO4核心外纳米结构.
使用KN-R染料和实际废水样本进行了光电催化降解实验.
测量了性能指标,包括降解效率,稳定性,能耗和COD去除.

主要成果:

优化的Co3O4-MnWO4-5光电极在2小时内实现了~91.2%的KN-R降解,具有很高的稳定性 (~9100s寿命).
实际的废水处理显示了83%的COD去除和98%的脱色,能耗低 (4.48 kWhm-3).
增强的PEC性能归因于有利的带结构,更高的OEP,更大的表面积和改进的电荷载体运输.

结论:

合理设计的核心外Co3O4-MnWO4架构在有机污染物降解方面表现出卓越的PEC性能.
开发的光电极显示出在工业废水处理中实际应用的巨大潜力.
该研究强调了材料设计在推进环境修复PEC技术方面的重要性.

关键词:

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