Photocatalytic Microreactor Using Monochromatic Visible Light

Abstract:

A photocatalytic planar reactor with an immobilized nanoporous BiVO₄ film has been integrated with a blue-light panel LED, which acts as the light source. The microreactor utilizes two BiVO₄-coated glasses as the top and the bottom layer and a UV curable resin layer as the spacer. The UV spacer is patterned with tree-shaped microchannels and a reaction chamber (10 ´ 10 ´ 0.1 mm³). It was found that under blue light of 140 mW/cm² (the LED is powered at 11 V, 402 nm ) and the flow rate of 37.5 µl/min, the microreactor has the optimum performance with a degradation rate of about 3%/s and a photonic utilization efficiency ³ 0.02%. However, the photonic efficiency can be improved to 0.3% when LED is powered at 9 V.

• Periodical: Advanced Materials Research (Volume 254)
• Pages: 219-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.254.219
• Online since: May 2011
• Authors: Ning Wang, Yu Peng Zhang, Lei Lei, Helen L. W. Chan, Xu Ming Zhang
• Keywords: Bismuth Vandate, Blue-Light LED, Microfluidic Reactor, Photocatalytic

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