The degradation ratio of methyl orange is 92.2% under radiation of 300 W high-pressure mercury lamp for 120 min when dosage of the photocatalyst is 400 mg/L.

• 在催化剂的添加量为400 mg/L；中性条件下；光照反应120 m in时；甲基橙的脱色率为92.；2%25。