Visible light-induced photocatalyst

Details Visible light-induced photocatalyst Visible light-induced photocatalyst

2007-01-30

2007-01-30

Pert, Evan (Department: 2826)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S350000

Reexamination Certificate

active

10747463

ABSTRACT:
A visible light induced, highly oxidative, and highly reductive photocatalyst. The photocatalyst includes a first semiconductor with a bandgap between valence band and conduction band thereof between 2.0 eV and 3.0 eV, and second semiconductor, combined with the first semiconductor, with a bandgap between valence band and conduction band thereof between 2.0 eV and 3.0 eV. The conduction band of the first semiconductor is negative relative to that of H2/H2O with a difference of 0.2 eV or greater. The valence band of the second semiconductor is positive relative to that of H2/H2O with a difference of 2.8 eV or greater.

REFERENCES:
patent: 5698177 (1997-12-01), Pratsinis et al.
patent: 6602607 (2003-08-01), Rengakuji et al.
patent: 6830741 (2004-12-01), Sakatani et al.
patent: 6908881 (2005-06-01), Sugihara
patent: 7011808 (2006-03-01), Sakatani et al.
patent: 7033566 (2006-04-01), Arakawa et al.

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