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Direct Electrochemical Protonation of Metal Oxide Particles
- Source :
- Journal of the American Chemical Society. 143:9236-9243
- Publication Year :
- 2021
- Publisher :
- American Chemical Society (ACS), 2021.
-
Abstract
- Metal oxides with surface protonation exhibit versatile physical and chemical properties suitable for use in many fields. Here, we develop an electrochemical route to directly protonize the physically assembled oxide particles, such as TiO2, Nb2O5, and WO3, in a Na2SO4 neutral electrolyte, which is a result of electrochemically induced oxygen vacancies reacting with water molecules. With no need of electric connection among particles or between particles and conductive substrate, the electrochemical protonation follows a bottom-up particle-by-particle surface protonation mechanism due to the fact that the protonation inducing high surface conductivity creates an efficient electron transfer pathway among particles. Our results show that electrochemical protonation of particles provides a chance to finely functionalize the surface of a single particle by only adjusting electrode potentials. Such a facile, cost-efficient, and green route is easy to run for a large-scale production and unlocks the potential of semiconductor oxides for various applications.
- Subjects :
- Chemistry
Oxide
Protonation
General Chemistry
Electrolyte
010402 general chemistry
Electrochemistry
01 natural sciences
Biochemistry
Catalysis
0104 chemical sciences
Metal
Electron transfer
chemistry.chemical_compound
Colloid and Surface Chemistry
Chemical engineering
Standard electrode potential
visual_art
visual_art.visual_art_medium
Particle
Subjects
Details
- ISSN :
- 15205126 and 00027863
- Volume :
- 143
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi.dedup.....ef6077158461dfca4beabd8c855f6b31
- Full Text :
- https://doi.org/10.1021/jacs.1c04631