| abstract |
PROBLEM TO BE SOLVED: To improve silver ion sequestering property of a silver ion sequestering / releasing agent. A silver ion sequestering / releasing agent comprising a silver ion exchangeable material of the following formula. M (H (1-xy) Ag x M ' y PO 4 ) 2 · nH 2 O In the above formula, M is zirconium (Zr), titanium (Ti), tin (Sn), germanium (Ge) or hafnium (Hf) or any combination thereof, and M ′ is an alkali metal or an alkaline earth metal. And x is a numerical value in the range of 0.10 to 0.80, y is a numerical value in the range of 0.15 to 0.85, and (x + y) is a numerical value in the range of 0.25 to 0.95. And n is a rational number in the range of 0-10. [Selection diagram] None |