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zhigang985

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以450 W高压汞灯为光源时,通过图3-10b可以看出,光照30 min后,亚甲基蓝的降解率为86.66 %,高压汞灯的光谱分布(波长分布)为350 nm~450 nm(属紫外光区),说明X在紫外光下也具较强的光催化活性;为了研究光催化过程H2O2的作用,我们进行了不加H2O2的光催化降解实验,结果如图3-10c所示,由图可以看出,没加H2O2时,氙灯照射30 min,亚甲基蓝的降解率仅为5.146 %
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zhigang985(金币+40, 翻译EPI+1): 2011-05-12 08:55:53
ringzhu(金币+30): ~~ 2011-05-19 16:05:58
Fig 3-10b indicated that the degradation rate of methylene blue reached 86.66% after illuminating for 30min under 450W high-pressure mercury lamp which wave lenyth distribution between 350~450nm,it illustrated X showed high photodegradation activity under UV light;In order to investigate the photodegradation mechanism of H2O2,we conducted the photodegradation experiment without H2O2,the results were presented in fig 3-10c,it indicated that the degradation rate of methylene blue was just 5.146% after illuminating for 30min under xenon lamp.
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2楼2011-05-11 23:05:16
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