Bi‐Functional Co/Al Modified 1T‐MoS 2 /rGO Catalyst for Enhanced Uranium Extraction and Hydrogen Evolution Reaction in Seawater

作者：Jiahuang Jian, Hongjun Kang, Dongmei Yu, Xianshu Qiao, Yang Liu, Yang Li, Wei Qin, Xiaohong Wu · 发表于：Small · 年份：2023 · DOI：10.1002/smll.202207378 · 被引用次数：55 · 研究领域：Radioactive element chemistry and processing、Nuclear Materials and Properties、Metal Extraction and Bioleaching

Abstract Uranium is a key element in the preparation of nuclear fuel. An electrochemical uranium extraction technique is proposed to achieve high efficiency uranium extraction performance through HER catalyst. However, it is still a challenge to design and develop a high‐performance hydrogen evolution reaction (HER) catalyst for rapid extraction and recovery of uranium from seawater. Herein, a bi‐functional Co, Al modified 1T‐MoS 2 /reduced graphene oxide (CA‐1T‐MoS 2 /rGO) catalyst, showing a good HER performance with a HER overpotential of 466 mV at 10 mA cm −2 in simulated seawater, is first developed. Benefiting from the high HER performance of CA‐1T‐MoS 2 /rGO, efficient uranium extraction is achieved with a uranium extraction capacity of 1990 mg g −1 in simulated seawater without post‐treatment, exhibiting a good reusability. The results of experiments and density functional theory (DFT) show that a high uranium extraction and recovery capability is attributed to the synergy effect of the improved HER performance and the strong adsorption capacity between U and OH*. This work provides a new strategy for the design and preparation of bi‐functional catalysts with high HER performance and uranium extraction and recovery capabilities in seawater.