Efficient Hydrogen Production Coupled with Polylactic Acid Plastic Electro Treatment over a CoFe LDH/MoSe 2 /Ni x Se y /NF Heterostructure Electrocatalyst

作者：Wenkai Zhao, Hongyou Pang, Lu Shi, Yunchen Wang, Hui Miao, Tao Sun · 发表于：ACS Sustainable Chemistry & Engineering · 年份：2025 · DOI：10.1021/acssuschemeng.5c02565 · 被引用次数：12 · 研究领域：Electrocatalysts for Energy Conversion、Fuel Cells and Related Materials、Advanced Photocatalysis Techniques

The integration of oxidation reactions of small-molecule organic compounds such as urea and plastic with hydrogen evolution reactions (HER) forms a hot topic within the electrocatalytic field, facilitating energy-saving hydrogen production while degrading waste plastic pollutants. Here, a dual-functional electrocatalytic material, namely, graded CoFe LDH/MoSe 2 /Ni x Se y /NF, was produced through a two-step successive hydrothermal approach. This constructed n-n/Schottky CoFe LDH/MoSe 2 /Ni x Se y /NF heterojunction forms an internal electric field to optimize electron transfer pathways and provide abundant active sites, thus possessing superior electrocatalytic performance. A CoFe LDH/MoSe 2 /Ni x Se y /NF catalyst exhibits a remarkable electrocatalytic performance, where the overpotential of HER is 88 mV at 10 mA cm –2, the oxygen evolution reaction stands at 1.510 V vs RHE, the oxidation reaction in electrolytes containing urea is at 1.391 V vs RHE, and lactate is at 1.371 V vs RHE at 50 mA cm –2 . In full water splitting devices, the CoFe LDH/MoSe 2 /Ni x Se y /NF electrocatalyst delivers the superior electrocatalytic performance in electrolytes containing urea, lactate. Meanwhile, the CoFe LDH/MoSe 2 /Ni x Se y /NF electrolysis cell can achieve stable and efficient output at industrial temperatures (50–80 °C), with a current density of 100 mA cm –2 at 1.558 V at 65 °C. Coupled with the lactate oxidation reaction, the full water splitting cell constructed by the CoFe LDH/...