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Compositions, materials incorporating the compositions, and methods of use thereof, are disclosed. In one embodiment, the composition includes a metal nitrate selected from d-block metal nitrates and f-block metal nitrates and a metal salt having weakly bound counter anions. The metal of the metal s

Compositions, materials incorporating the compositions, and methods of use thereof, are disclosed. In one embodiment, the composition includes a metal nitrate selected from d-block metal nitrates and f-block metal nitrates and a metal salt having weakly bound counter anions. The metal of the metal salt having weakly bound counter anions is selected from a d-block metal and an f-block metal. Another embodiment of the composition includes a first polyoxometalate having a first metal selected from a d-block metal and an f-block metal and a second polyoxometalate having a second metal selected from a d-block metal and an f-block metal. The first metal being an open coordinate site of the first polyoxometalate. In addition, the first metal has a nitrate terminal ligand. The second metal being an open coordinate site of the second polyoxometalate. In addition, the second metal has a halide terminal ligand.

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Therefore, having thus described the invention, at least the following is claimed: 1. A composition, comprising: a metal nitrate selected from d-block metal nitrates and f-block metal nitrates, wherein the metal nitrate is selected from the group consisting of iron (III) nitrate, cobalt (II) nitrat

Therefore, having thus described the invention, at least the following is claimed: 1. A composition, comprising: a metal nitrate selected from d-block metal nitrates and f-block metal nitrates, wherein the metal nitrate is selected from the group consisting of iron (III) nitrate, cobalt (II) nitrate, nickel (II) nitrate, cerium (III) nitrate and cerium (IV) nitrate; and a metal salt having weakly bound counter anions, wherein the metal is selected from the group consisting of a d-block metal and an f-block metal and the anion is selected from the group consisting of perchlorate, trifluoromethanesulfonate, and tetrafluoroborate; wherein the composition further comprises a polyoxometalate. 2. The composition of claim 1, wherein the metal salt having weakly bound counter anions is selected from the group consisting of copper (II) perchlorate, copper (II) trifluoromethanesulfonate, and copper (II) tetrafluoroborate. 3. The composition of claim 1, wherein the metal nitrate is selected from iron (III) nitrate, cobalt (II) nitrate, nickel (II) nitrate, cerium (III) nitrate and cerium (IV) nitrate, and wherein the metal salt having weakly bound counter anions is selected from the group consisting of copper (II) perchlorate, copper (II) trifluoromethanesulfonate, and copper (II) tetrafluoroborate. 4. The composition of claim 1, wherein the polyoxometalate has the formula A[VkMomWnNboTapMqXrOs]Y−, wherein A includes at least one counterion selected from the group consisting of alkali metal cations, alkaline earth metal cations, ammonium cations, quatemary ammonium cations, d-block cations, f-block cations, and combinations thereof, wherein M includes at least one element selected from the group consisting of an f-block element and a d-block element having at least one d-electron, except for vanadium, molybdenum, tungsten, niobium, or tantalum, wherein X includes at least on element selected from the group consisting of a p-block element, a d-block element, and an f-block element, except for oxygen, wherein k can range from 0 to 30, wherein m can range from 0 to 160, wherein n can range from 0 to 160, wherein o can range from 0 to 30, where p can range from 0 to 10, wherein q can range from 0 to 30, wherein r can range from 0 to 30, wherein s is a number so that y is greater than zero, wherein the sum of k, m, n, o, and p is greater than or equal to four; and wherein the sum of k, m, and q is greater than zero. 5. The composition of claim 1, wherein the polyoxometalate has the formula [XgVb j+Mc h+Z12-b-c l+Ox]u−[A],wherein X is at least one p-, d-, or f-block element; g is greater than or equal to 2; M is at least one f-block element or d-block element having at least one d-electron, wherein M is not vanadium; h is from 1 to 7; i is from 5 to 6; j is from 4 to 5; x is 39 or 40; Z is tungsten, molybdenum, niobium, or a combination thereof; b is from 0 to 6; c is from 0 to 6; u is from 3 to 9; and A is a counterion. 6. The composition of claim 5, wherein the polyoxometalate has the formula [X9Vb j+Z12-b i+O40]u−[A], wherein X is at least one of phosphorus, silicon, aluminum, boron, zinc, cobalt, or iron; b is from 1 to6. 7. The composition of claim 5, wherein the polyoxometalate has the formula [Xg+Mc h+Z12-c i+O40]u−[A], wherein X is at least one of phosphorus, silicon, aluminum, boron, zinc, cobalt, or iron; c is from 1 to 6, and u is from 3to 9. 8. The composition of claim 1, wherein the polyoxometalate has the formula [X2r+Vus+Mvt+Z18-u-vy+Oz]w−[A],wherein X is at least one p-, d-, or f-block element; r is greater than or equal to 1; M is at least one f-block element or d-block element having at least one d-electron, wherein M is not vanadium; t is from 1 to 7; s is from 4 to 5; Z is tungsten, molybdenum, niobium, or a combination thereof; u is from 0 to 9; v is from 0 to 9; y is from 5 to 6; z is 61 or 62; w is greater than or equal to 4; and A is a counterion. 9. The composition of claim 8, wherein the polyoxometalate has the formula [X2r+Vus+Z18-uy+O62]w−[A],wherein X is at least one of phosphorus, sulfur, silicon, aluminum, boron, zinc, cobalt, or iron; u is from 1 to 9; and w is greater than or equal to 4. 10. The composition of claim 8, wherein the polyoxometalate has the formula [X2r+Mvt+Z18-vy+O62]w−[A], wherein X is at least one of phosphorus, sulfur, silicon, aluminum, boron, zinc, cobalt, or iron; v is from 1 to 9; and w is greater than or equal to 4. 11. The composition of claim 1, wherein the polyoxometalate has the formula [YVpZ12-pO40][A], wherein Y is phosphorus, silicon, or aluminum; Z is tungsten or molybdenum; p is from 1 to 6, and A is a counterion. 12. The composition of claim 1, wherein the metal nitrate is selected from the group consisting of iron (III) nitrate, cobalt (II) nitrate, nickel (II) nitrate, copper (II) nitrate, cerium (III) nitrate and cerium (IV) nitrate. 13. The composition of claim 1, wherein the metal nitrate is selected from the group consisting of iron (III) nitrate, cobalt (II) nitrate, nickel (II) nitrate, cerium (III) nitrate and cerium (IV) nitrate, and wherein the metal salt having weakly bound counter anions is selected from the group consisting of copper (II) perchlorate, copper (II) trifluoromethanesulfonate, and copper (II) tetrafluoroborate. 14. The composition of claim 1, wherein the polyoxometalate is selected from the group consisting of TBA6Fe3PW9O37, wherein TBA is tetra-n-butylammonium; TBA6V10O28, TBA5PV2Mo10O40; TBA9Fe3(A-PW9O34)2; and TBA12Fe(OH2)2Fe2(P2W15O56)2. 15. The composition of claim 1, wherein the composition is includedin a material. 16. The composition of claim 1, wherein the composition is includedin a material. 17. The composition of claim 15, wherein the material being selected from the group consisting of a fabric, a topical carrier, a powder, and a coating. 18. The composition of claim 16, wherein the material being selected from the group consisting of a fabric, a topical carrier, a powder, and a coating. 19. A method of removing a contaminant, comprising: contacting the composition of claim 1 with the contaminant. 20. The method of claim 19, wherein the composition is included in a material. 21. The method of claim 20, wherein the material being selected from the group consisting of a fabric, a topical carrier, a powder, and a coating. 22. A method of removing a contaminant, comprising: contacting the composition of claim 1 with the contaminant. 23. The method of claim 22, wherein the composition is included in a material. 24. The method of claim 23, wherein the material being selected from the group consisting of a fabric, a topical carrier, a powder, and a coating. 25. The composition of claim 1, wherein the metal nitrate is iron (III) nitrate. 26. The composition of claim 1, wherein the metal nitrate is cobalt (II) nitrate. 27. The composition of claim 1, wherein the metal nitrate is nickel (II) nitrate. 28. The composition of claim 1, wherein the metal nitrate is cerium (III) nitrate and cerium (IV) nitrate.