HETERODIMERIC SYSTEM FOR VISIBLE-LIGHT HARVESTING PHOTOCATALYSTS
First Claim
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1. A photocatalytic system comprising a heterodimer comprising:
- a first nanomaterial comprising titanium dioxide (TiO2) having a first bandgap energy characterized by a first highest occupied molecular orbital (HOMO) and a first lowest unoccupied molecular orbital (LUMO); and
a second nanomaterial comprising semiconducting metal oxide and/or metal sulfide (MOX/MSX) having a second bandgap energy characterized by a second HOMO and a second LUMO,whereinthe second bandgap energy is in the range of energies for a visible light spectrum, andthe second LUMO is higher than the first LUMO.
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Abstract
Heterodimeric photocatalytic systems and methods of making and using the same are disclosed. The systems can include a first nanomaterial comprising titanium dioxide (TiO2) having a first bandgap energy characterized by a first highest occupied molecular orbital (HOMO) and a first lowest unoccupied molecular orbital (LUMO). The systems can further include a second nanomaterial comprising semiconducting metal oxide and/or metal sulfide (MOX/MSX) having a second bandgap characterized by a second HOMO and a second LUMO, wherein the second bandgap energy is in the range of energies for a visible light spectrum, and the second LUMO is higher than the first LUMO.
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Citations
42 Claims
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1. A photocatalytic system comprising a heterodimer comprising:
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a first nanomaterial comprising titanium dioxide (TiO2) having a first bandgap energy characterized by a first highest occupied molecular orbital (HOMO) and a first lowest unoccupied molecular orbital (LUMO); and a second nanomaterial comprising semiconducting metal oxide and/or metal sulfide (MOX/MSX) having a second bandgap energy characterized by a second HOMO and a second LUMO, wherein the second bandgap energy is in the range of energies for a visible light spectrum, and the second LUMO is higher than the first LUMO. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of harvesting visible light for photocatalysis, the method comprising:
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providing a heterodimer comprising; a first nanomaterial comprising titanium dioxide (TiO2), and a second nanomaterial comprising semiconducting metal oxide and/or semiconducting metal sulfide (MOX/MSX); and exposing the heterodimer to electromagnetic (EM) radiation, wherein; at least part of visible light spectrum of the EM radiation is absorbed by the second nanomaterial to excite an electron from a highest occupied molecular orbital (HOMO) to a lowest unoccupied molecular orbital (LUMO) of the second nanomaterial. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of fabricating a heterodimeric photocatalytic (HDP) structure, the method comprising:
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impregnating a host matrix with a second nanomaterial comprising semiconducting metal oxide and/or metal sulfide (MOX/MSX) whose bandgap energy is in the range of energies for visible light spectrum; and coating a first nanomaterial comprising TiO2 onto at least part of the surface of an integrated structure comprising the second nanomaterial. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method of fabricating a heterodimeric photocatalytic (HDP) structure, the method comprising:
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forming a heterodimer comprising; a first nanomaterial comprising titanium dioxide (TiO2), and a second nanomaterial comprising semiconducting metal oxide or metal sulfide (MOX/MSX) nanomaterial whose bandgap energy is in the range of energies for visible light spectrum; and impregnating the heterodimer into a host matrix. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. A photocatalytic system comprising a photocatalytic heterodimer comprising:
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a ultraviolet (UV) light responsive nanomaterial; and a visible light responsive nanomaterial, wherein the UV light responsive material and the visible light responsive nanomaterial are attached to or proximally positioned with respect to each other such that a photogenerated electron from the visible light responsive nanomaterial can transfer to the UV light responsive nanomaterial to participate in a photocatalytic activity. - View Dependent Claims (39, 40, 41, 42)
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Specification