Virus-inactivating liquid agent and virus-inactivating article

A method for inactivating a virus, the method comprising:

• contacting the virus with a virus-inactivating article, the virus-inactivating article comprising:
• a substrate;
• and
• a virus-inactivating layer on the substrate, wherein the virus-inactivating layer includes particles of a layered material including one or plural layers, the one or plural layers including a layer body represented by:
• MmXn,
• wherein M is at least one first metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is 1 to 4, and m is more than n and 5 or less,
• wherein a modifier or terminal T exists on a surface of the layer body, and T is at least one selected from the group consisting of a hydroxyl group, a fluorine atom, a chlorine atom, or an oxygen atom, and
• wherein an average value of thicknesses of the particles is 10 nm or less.