Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 6, Pages 2467-2473Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp305968u
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
- KAITEKI Institute, Inc.
- JSPS [23.1430]
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Grants-in-Aid for Scientific Research [23245028] Funding Source: KAKEN
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A gradual size control of poly(N-vinyl-2-pyrrolidone)-protected Rh nanoparticles (PVP-Rh NPs) was successfully achieved in the range of 1.7-7.7 nm by tuning the pH value and the reaction temperature of the ethylene glycol (EG) solution; smaller NPs were formed at higher pH and at higher temperature. This trend can be interpreted by the change in the nucleation rate caused by tuning the pH value and/or the temperature of the solution. When the size tuned PVP-Rh NPs were applied for use as cocatalysts in a photocatalyst (solid solution of GaN and ZnO (Ga1-xZnx)(N1-xOx)) for overall water splitting under visible light, it was demonstrated that smaller Rh cores gave higher activity than the larger ones.
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