Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Promoting Plasmonic Hot Hole Extraction and Photothermal Effect for Oxygen Evolution Reactions
Boosting oxygen evolution reaction by local surface plasmon resonance (LSPR) provides breakthrough opportunities for the promotion of solar energy conversion.The potential of LSPR has rarely been tapped and investigated. Here, we report the precise regulation of commercial Au nanoparticles plasmonic nanomaterial and OER electrocatalysts, viz., the NiCoOx electrocatalytic layer with hole transport ability and photothermal effect is prepared on the surface of Au nanoparticles by photoelectrodeposition. The NiCoOx layer not only increases the transmission distance of holes generated by plasmonic Au nanoparticles, but also reduce the agglomeration of plasmonic Au nanoparticles during long?time OER reaction, which greatly improves the OER catalytic ability. The current density of NiCoOx/Au anode is about 6.5 times of pristine NiCoOx anode and 47 times of pristine Au anode at 2.0 V versus RHE. More importantly, with the LSPR and photothermal effect, the NiCoOx/Au anode provides additional current density of 7.01 mA cm?2 after illumination, and maintains no attenuation for more than 2000 s. Benefiting from the solution of agglomeration problem of Au nanoparticles in the long?time OER process and the effective utilization of generated holes of Au nanoparticles, this design can provide guidance for the application of plasmonic materials in the field of electrocatalysis.
» Publication Date: 26/03/2023
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
