In the current work, we utilize the abundant and free form of energy “sunlight” for the catalytic process in combination with microfluidic technology for the conversion of the toxic hexavalent form of chromium to a less toxic trivalent form. Various microfluidic parameters such as reactor design, flow rate and channel length along with different catalyst phases were fine-tuned to bring about superior degradation efficiency. A superior degradation efficiency of 95% was attained by utilizing a serpentine microreactor coated with a photocatalyst in the pure anatase phase at a flowrate of 50 µl/min.
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