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The photocatalytic degradation effect of methyl orange in low concentration(0.001M) was the best for 200~400 nm TiO2 particles and the photocatalytic degradation effect of methyl orange in high concentration(0.1M) was the best for 5~10 nm TiO2 particles. Compared to those exposed to dry environment, the decrease of methyl orange on samples exposed to wet environment was due to the limestone surface¡¯s humidity.
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ÕæÇ¿±ØÊ¤: ½ð±Ò+1, лл 2014-11-29 10:37:49
xfgzju(RXMCDM´ú·¢): ½ð±Ò+10, ¶àлӦÖú£¡ 2014-12-29 22:00:14
The photocatalytic degradation effect of methyl orange at low (0.001M) and high (0.1M) concentrations was the best for 200~400 nm and 5~10 nm TiO2 particles, respectively. Compared to those exposed to dry environment, the decrease of methyl orange in samples exposed to wet environment was due to the limestone surface¡¯s humidity.
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mac194

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xfgzju(RXMCDM´ú·¢): ½ð±Ò+5, ¶àлӦÖú£¡ 2014-12-29 22:00:30
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xfgzju(RXMCDM´ú·¢): ½ð±Ò+15, ¶àлӦÖú£¡ 2014-12-29 22:00:50
RXMCDM: ·­ÒëEPI+1 2014-12-29 22:00:55
The optimal sizes of TiO2 particles in the photocatalytic degradation of methyl orange at low (0.001M) and high (0.1M) concentrations are 200~400 nm  and 5~10 nm, respectively.  The limestone surface humidity of TiO2 particles results in the decrease of methyl orange in  wet environment comparing with that in dry.
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