Layered double hydroxide pillared by Paratungstate A ion, Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O, was prepared via anion exchange reaction of the synthetic precursor, Mg 4Al 2(OH) 12 TA· x H 2O(TA 2- =terephthal...Layered double hydroxide pillared by Paratungstate A ion, Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O, was prepared via anion exchange reaction of the synthetic precursor, Mg 4Al 2(OH) 12 TA· x H 2O(TA 2- =terephthalate), and W 7O 6- 24 ion. Trace aqueous organochlorine pesticide, hexachlorocyclohexane, was totally degraded and mineralized into CO 2 and HCl by irradiating a suspension of Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O and HCH in the near UV area. The model and pathway for the photocatalytic degradation of HCH on the Mg 12 Al 6(OH) 36 (W 7O 24 )· 4H 2O were proposed, indicating that the interlayer space is the reaction field, and that photogeneration of OH · radicals are responsible for degradation pathway.展开更多
PDS与ADA是目前国内化肥厂脱硫工艺中两种主要的催化剂。本文首次建立了用双波分分光光度法联合测定脱硫液中 PDS 与 ADA 或单组分 PDS的方法。此方法有效地清除了脱硫液中悬浮硫等成分产生的背景干扰和光散射的影响,而且 PDS 与 ADA ...PDS与ADA是目前国内化肥厂脱硫工艺中两种主要的催化剂。本文首次建立了用双波分分光光度法联合测定脱硫液中 PDS 与 ADA 或单组分 PDS的方法。此方法有效地清除了脱硫液中悬浮硫等成分产生的背景干扰和光散射的影响,而且 PDS 与 ADA 之间的相互干扰也得到了有效地控制。本方法在有关化肥厂进行了实际测定,结果较为理想。展开更多
Photodegradation of malachite green (MG) as the model molecule with TiO2 catalyst by microwave discharge electrodeless lamps (MDELs) was investigated.The effects of different parameters in photodegradation of MG,such ...Photodegradation of malachite green (MG) as the model molecule with TiO2 catalyst by microwave discharge electrodeless lamps (MDELs) was investigated.The effects of different parameters in photodegradation of MG,such as MDEL shape,microwave power,initial solution concentration,and catalyst dosage were discussed.Additionally,the photodegradation of congo red,acid black,acid fuchsine and salicylic acid with anatase TiO2 catalyst were investigated under the optimal reaction condition.The results showed that the MDEL is a new treatment method for enhancing photodegradation of organic contaminants with TiO2 catalyst.展开更多
文摘Layered double hydroxide pillared by Paratungstate A ion, Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O, was prepared via anion exchange reaction of the synthetic precursor, Mg 4Al 2(OH) 12 TA· x H 2O(TA 2- =terephthalate), and W 7O 6- 24 ion. Trace aqueous organochlorine pesticide, hexachlorocyclohexane, was totally degraded and mineralized into CO 2 and HCl by irradiating a suspension of Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O and HCH in the near UV area. The model and pathway for the photocatalytic degradation of HCH on the Mg 12 Al 6(OH) 36 (W 7O 24 )· 4H 2O were proposed, indicating that the interlayer space is the reaction field, and that photogeneration of OH · radicals are responsible for degradation pathway.
文摘PDS与ADA是目前国内化肥厂脱硫工艺中两种主要的催化剂。本文首次建立了用双波分分光光度法联合测定脱硫液中 PDS 与 ADA 或单组分 PDS的方法。此方法有效地清除了脱硫液中悬浮硫等成分产生的背景干扰和光散射的影响,而且 PDS 与 ADA 之间的相互干扰也得到了有效地控制。本方法在有关化肥厂进行了实际测定,结果较为理想。
文摘Photodegradation of malachite green (MG) as the model molecule with TiO2 catalyst by microwave discharge electrodeless lamps (MDELs) was investigated.The effects of different parameters in photodegradation of MG,such as MDEL shape,microwave power,initial solution concentration,and catalyst dosage were discussed.Additionally,the photodegradation of congo red,acid black,acid fuchsine and salicylic acid with anatase TiO2 catalyst were investigated under the optimal reaction condition.The results showed that the MDEL is a new treatment method for enhancing photodegradation of organic contaminants with TiO2 catalyst.
