Nano-sized metal oxides have gained widespread interest because of their multifarious applications in catalysis, energy storage, semiconductors, and nanomedicine. Though many viable solution-based techniques for the preparation of nanoparticles (NPs) have been reported, meeting efficiency and scalability requirements remains challenging. Here, we demonstrate the generalized and facile method to yield metal oxide NPs that exploit bulk metal particulates. Based on a galvanic reaction, the interface between bulk metal powder and oxidized carbonaceous material transforms metals in to oxide/hydroxide NPs on the carbonaceous surface, owing to the resulting potential difference. This preparation procedure uses a solution-based synthesis technique, which is relatively straightforward, eco-friendly, scalable, inexpensive, and can be easily executed for a variety of metals; for instance, we demonstrated this approach for Zn, Ni, Co, Sn and Cu.
Bibliographical noteFunding Information:
This research was respectfully supported by Energy Technology Development Project (ETDP) funded by the Ministry of Trade, Industry & Energy ( 20172410100150 ). This work was supported by the Technology Innovation Program (or Industrial Strategic Technology Development Program (10062226, evelopment of flexible hybrid capacitor (0.25 mWh/cm 2 ) composed of graphene-based flexible electrode and gel polymer electrolyte with high electrolyte uptake) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea) . This work was supported by Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation Planning (KETEP), and was granted financial resources from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20152020105770 ).
© 2018 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry