Surfaces and coatings for the removal of carbon dioxide
First Claim
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1. A method comprising:
- flowing an incoming gas stream comprising carbon dioxide through a gas scrubbing apparatus comprising a photocatalytic film, wherein the photocatalytic film comprises;
a matrix;
semiconductor particles within the matrix; and
a charge transfer agent within the matrix;
wherein at least some of the semiconductor particles are separate from at least some of the charge transfer agent; and
removing, via the photocatalytic film, at least 10 ppm/minute carbon dioxide from the incoming gas stream.
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Abstract
Apparatus suited for removing carbon dioxide from gases are disclosed. The apparatus may employ bodies having a photocatalytic film. Associated methods and compositions are also disclosed.
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Citations
47 Claims
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1. A method comprising:
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flowing an incoming gas stream comprising carbon dioxide through a gas scrubbing apparatus comprising a photocatalytic film, wherein the photocatalytic film comprises; a matrix; semiconductor particles within the matrix; and a charge transfer agent within the matrix; wherein at least some of the semiconductor particles are separate from at least some of the charge transfer agent; and removing, via the photocatalytic film, at least 10 ppm/minute carbon dioxide from the incoming gas stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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contacting a body comprising a photocatalytic film with a carbon dioxide-containing gas, wherein the photocatalytic film comprises; a matrix; semiconductor particles within the matrix; and a charge transfer agent within the matrix; wherein at least some of the semiconductor particles are separate from at least some of the charge transfer agent; and converting, via the body, at least 10 ppm/minute carbon dioxide to non-carbon dioxide products per square meter of photocatalytic film surface area. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method comprising:
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contacting a body comprising a photocatalytic film with a carbon dioxide-containing gas, wherein the photocatalytic film comprises; a matrix; semiconductor particles within the matrix; and a charge transfer agent within the matrix; and converting, via the body, at least 10 ppm/minute carbon dioxide to non-carbon dioxide products per square meter of photocatalytic film surface area; wherein the converting step occurs at ambient conditions; and wherein the converting step comprises producing a carbonate-containing end product via a receptor agent. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification