Highly Selective Deethylation of Rhodamine B on Prepared in Supercritical Fluids

International Journal of Photoenergy - Tập 2012 - Trang 1-7 - 2012
Yuzun Fan1, Guoping Chen1, Dongmei Li1, Yanhong Luo1, Nina Lock2, Anca Paduraru Jensen3, Aref Mamakhel3, Jianli Mi2, Steen B. Iversen3, Qingbo Meng1, Bo B. Iversen2
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2Center for Materials Crystallography, Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, 8000 Aarhus, Denmark
3SCF Technologies A/S, Smedeholm 13B, 2730 Herlev, Denmark

Tóm tắt

Pure phase anatase TiO2nanoparticles 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 TiO2nanoparticles show much higher photodegradation efficiencies than commercial Degussa P25 TiO2. Moreover, the photodegradation of RhB on the as-prepared TiO2follows 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.

Từ khóa


Tài liệu tham khảo

10.1016/j.surfrep.2008.10.001

1995, Chemical Reviews, 95, 69, 10.1021/cr00033a004

10.1039/b921692h

10.1007/s11244-005-3788-2

10.1016/j.apcata.2009.02.043

10.1155/2011/798051

10.1155/2010/764870

10.1021/es9707926

1991, Nature, 353, 737, 10.1038/353737a0

10.1155/2011/327821

10.1155/2010/264831

10.1023/A:1017948330363

10.1002/anie.200704788

10.1021/jp066519k

2000, Journal of Physical Chemistry B, 104, 4815, 10.1021/jp993819b

10.1016/j.jphotochem.2008.07.013

10.1155/S1110662X03000345

10.1021/la800313s

2011, Chemical Communications, 47, 4532, 10.1039/c1cc10501a

10.1021/ja105283s

10.1016/j.jssc.2006.05.012

10.1016/j.jssc.2008.11.009

10.1021/ie050694q

10.1107/S0021889810019187

10.1021/nn7002426

10.1007/s11051-004-1714-3

1978, Journal of Physical Chemistry, 82, 1391, 10.1021/j100501a014

10.1021/jp051222s

10.1021/jp905173e

1977, Journal of Physical Chemistry, 81, 1845, 10.1021/j100534a012

1998, Journal of Physical Chemistry B, 102, 5845, 10.1021/jp980922c

Thông tin
Thông tin xuất bản

International Journal of Photoenergy

Tập 2012

1-7

Thông tin tác giả