Here is an article which might be helpful to people who discuss the chemistry involved in the oxidation of iodine tincture (KI/I2) with hydrogen peroxide:
The Catalytic Decomposition of Hydrogen Peroxide by the Iodine-Iodide Couple, Part 2 and 3.
The Rate of Oxidation in Neutral, and in Acid, Solution of Hydrogen Peroxide by Iodine
J. Am. Chem. Soc. 54, 3409-3508 (1932) (https://www.thevespiary.org/rhodium/Rhodium/pdf/h2o2-i2.pdf)
(https://www.thevespiary.org/rhodium/Rhodium/pdf/h2o2-i2.pdf)