Hypocrellin B, a photosensitizer isolated from Hypocrella Bambuase sacc in Yunnan province, has significant anti-tumor
and anti-virus character. In this article, hypocrellin B, which was grafted on activated carbon, was used as photocatalysts
to catalytic oxidize 2,3,5-trimethylphenol to 2,3,5-trimethylhydrobenzoquinone because of its high
photons efficiency. This study realized nearly 100% selectivity for 2,3,5-trimethylhydrobenzoquinone under visible light
irradiation (>400nm) at aerobic atmosphere. The photocatalytic oxidation process has been studied by different
parameters like the pretreatment of activated carbon, synthetic mehtod of grafted hypocrellin, and photo-assisted
oxidation catalysis of 2,3,5-trimethylphenol to 2,3,5-trimethylhdrobenzoquinone. Compared to the conventional
methods, this process could be more eco-friendly.
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