Processing of molybdenum industrial waste into sustainable and efficient nanocatalysts for water electrolysis reactions  

作　　者：Federico Ursino Giacometta Mineo Antonino Scandurra Mario Scuderi Angelo Forestan Catya Alba Riccardo Reitano Antonio Terrasi Salvo Mirabella 

机构地区：[1]Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università degli Studi di Catania, via S. Sofia 64, 95123, Catania, Italy [2]CNR-IMM, Università di Catania, via S. Sofia 64, 95123, Catania, Italy [3]Research Unit of the University of Catania, National Interuniversity Consortium of Materials Science and Technology (INSTM-UdR of Catania), Via Santa Sofia 64, 95125, Catania, Italy [4]CNR-IMM, Sede Principale, Strada VIII, 95121, Catania, Italy [5]R & D Spirit Srl-Soc. Unipersonale, Via dei Laghi 67, 36072, Vicenza, Italy

出　　处：《Nano Research》2024年第11期9585-9593,共9页纳米研究（英文版）

基　　金：Funding note:Open access funding provided by the CRUI-CARE Agreement.

摘　　要：The increasing need for sustainable energy and the transition from a linear to a circular economy pose great challenges to the materials science community.In this view,the chance of producing efficient nanocatalysts for water splitting using industrial waste as starting material is attractive.Here,we report low-cost processes to convert Mo-based industrial waste powder into efficient catalysts for oxygen evolution reaction(OER)and hydrogen evolution reaction(HER).pH controlled hydrothermal processing of Mo-based industrial waste powder leads to pure orthorhombic MoO_(3) nanobelts(50–200 nm wide,10µm long)with promising OER performances at 10 mA·cm^(−2) with an overpotential of 324 mV and Tafel slope of 45 mV·dec^(−1) in alkaline electrolyte.Indeed,MoS_(2)/MoO_(3) nanostructures were obtained after sulfurization during hydrothermal processes of the MoO_(3) nanobelts.HER tests in acidic environment show a promising overpotential of 208 mV at 10 mA·cm^(−2) and a Tafel slope of 94 mV·dec^(−1).OER and HER performances of nanocatalysts obtained from Mo industrial waste powder are comparable or better than Mo-based nanocatalysts obtained from pure commercial Mo reagent.This work shows the great potential of reusing industrial waste for energy applications,opening a promising road to join waste management and efficient and sustainable nanocatalysts for water splitting.

关 键 词：MOO3 MOS2 industrial waste oxygen evolution reaction hydrogen evolution reaction critical raw material-free material 

分 类 号：O64[理学—物理化学]