Photo‐Fenton Degradation of Nitroaromatic Explosives by Light‐Powered Hematite Microrobots: When Higher Speed Is Not What We Go For

involved in the photo-Fenton reaction. This work presents new insights into the motion behavior of light-powered Janus micromotors and demonstrates that high speed is not what really matters for water purification via photo-Fenton reaction, which is important for the future environmental applications of micromachines.