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19 results on '"Iversen, Steen B."'

9. Simultaneous Adsorption of SO2-NOx from Flue Gases in a Riser Configuration

Author

UCL - FSA/MAPR - Département des sciences des matériaux et des procédés, Das, Asit K., De Wilde, Juray, Heynderickx, Geraldine J., Marin, Guy B., Iversen, Steen B., Felsvang, Karsten, UCL - FSA/MAPR - Département des sciences des matériaux et des procédés, Das, Asit K., De Wilde, Juray, Heynderickx, Geraldine J., Marin, Guy B., Iversen, Steen B., and Felsvang, Karsten

Published
2001

16. Highly Selective Deethylation of Rhodamine B on TiO2 Prepared in Supercritical Fluids.

Author

Yuzun Fan, Guoping Chen, Dongmei Li, Yanhong Luo, Lock, Nina, Jensen, Anca Paduraru, Mamakhel, Aref, Jianli Mi, Iversen, Steen B., Qingbo Meng, and Iversen, Bo B.

Subjects
ETHYLATION, RHODAMINE B, TITANIUM dioxide nanoparticles, SUPERCRITICAL fluids, PHASE transitions, CONTINUOUS flow reactors, PHOTODEGRADATION, ISOPROPYL alcohol
Abstract

Pure phase anatase TiO2 nanoparticles with sizes of 5-8 nm and varying crystallinity were synthesized in supercritical isopropanol/water using a continuous flow reactor. Their photodegradation of rhodamine B (RhB) was evaluated under visible light irradiation. The as-prepared TiO2 nanoparticles show much higher photodegradation efficiencies than commercial Degussa P25 TiO2. Moreover, the photodegradation of RhB on the as-prepared TiO2 follows a different process from that on P25 TiO2, quicker N-deethylation and slower cleavage of conjugated chromophore structure. Based on PXRD, TEM, and BET measurements, these two photodegradation properties have been explained by the physicochemical properties of TiO2. [ABSTRACT FROM AUTHOR]

Published
2012
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