Energy-activated compositions for controlled sustained release of a gas

A solid composition for electromagnetic energy-controlled generation and release of a gas comprising:

• between about 50 wt. % and about 99.99 wt. % of an energy-activated catalyst capable of being activated by electromagnetic energy, and
• between about 0.01 wt. % and about 50 wt. % of a solid containing anions capable of being oxidized or reacted to generate at least one gas selected from the group consisting of chlorine dioxide, sulfur dioxide, hydrogen sulfide, dichlorine monoxide, hydrocyanic acid, nitrogen dioxide, nitric oxide and nitrous oxide,
• the solid composition, when exposed to electromagnetic energy, being capable of generating and releasing the gas from the solid for at least one week after activation of the catalyst and oxidation or reaction of the anions.

A solid composition for electromagnetic energy-controlled generation and release of at least one gas comprising:

• between about 50 wt. % and about 99.99 wt. % of an energy-activated catalyst capable of being activated by electromagnetic energy, and
• between about 0.01 wt. % and about 50 wt. % of a solid containing chlorite or nitrite anions;
• the solid composition, when exposed to electromagnetic energy, being capable of generating and releasing chlorine dioxide or a nitrogen oxide from the solid for at least one week after activation of the catalyst and oxidation or reaction of the anions.

A solid composition for photo-controlled generation and release of at least one gas comprising:

• between about 50 wt. % and about 99.99 wt. % of a photocatalyst capable of being activated by light, and
• between about 0.01 wt. % and about 50 wt. % of a solid containing anions capable of photo-oxidizing or reacting to generate at least one gas wherein the anions are selected from the group consisting of chlorite, bisulfite, sulfite, hydrosulfide, sulfide, hypochlorite, cyanide and nitrite,
• the solid composition, when exposed to light, being capable of generating and releasing the gas from the solid for at least one week after activation of the photocatalyst and photo-oxidation or reaction of the anions.

A solid composition for photo-controlled generation and release of at least one gas comprising:

• between about 50 wt. % and about 99.99 wt. % of a photocatalyst capable of being activated by light, and
• between about 0.01 wt. % and about 50 wt. % of a solid containing anions capable of photo-oxidizing or reacting to generate at least one gas selected from the group consisting of chlorine dioxide, sulfur dioxide, hydrogen sulfide, dichlorine monoxide, hydrocyanic acid, nitrogen dioxide, nitric oxide and nitrous oxide, the solid composition, when exposed to light, being capable of generating and releasing the gas from the solid for at least one week after activation of the photocatalyst and photo-oxidation or reaction of the anions.

A solid composition for photo-controlled generation and release of at least one gas comprising:

• between about 50 wt. % and about 99.99 wt. % of a photocatalyst capable of being activated by light, and
• between about 0.01 wt. % and about 50 wt. % of a solid containing chlorite or nitrite anions,
• the solid composition, when exposed to light, being capable of generating and releasing chlorine dioxide or a nitrogen oxide from the solid for at least one week after activation of the photocatalyst and photo-oxidation or reaction of the anions.