However, there were no systematic studies that correlate the influence of the charge transport of highly ordered porous nanostructure on photoactivity. The improved photocatalytic activities of this structure are often attributed to the larger surface area, high light absorption, and suppressed charge recombination. In contrast, bismuth vanadate (BiVO 4), a metal oxide photocatalyst responsive to both ultraviolet and visible light, can absorb up to 30% of the energy in the solar spectrum.īiVO 4 in a 3D-ordered macroporous (3DOM) structure has received considerable attention owing to its superior performance. New hydrogen-producing function of oxygen-producing photocatalystĭr Ng, an expert in photocatalysis research, pointed out that the typical photocatalyst for solar water splitting can absorb ultraviolet light only from the solar spectrum, which accounts for about 4% of the energy from sunlight. Their findings were published in the scientific journal ACS Energy Letters, titled "Unveiling Carrier Dynamics in Periodic Porous BiVO 4 Photocatalyst for Enhanced Solar Water Splitting."
The research was co-led by Dr Ng Yun Hau, Associate Professor in CityU's School of Energy and Environment (SEE), and researchers from Germany.
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