PMID- 22530926 OWN - NLM STAT- MEDLINE DCOM- 20130124 LR - 20161125 IS - 1751-1097 (Electronic) IS - 0031-8655 (Linking) VI - 88 IP - 5 DP - 2012 Sep-Oct TI - Microemulsion synthesis, characterization of highly visible light responsive rare earth-doped Bi2O3. PG - 1205-10 LID - 10.1111/j.1751-1097.2012.01164.x [doi] AB - In this paper, Bi(2)O(3) and rare earth (La, Ce)-doped Bi(2)O(3) visible-light-driven photocatalysts were prepared in a Triton X-100/n-hexanol/cyclohexane/water reverse microemulsion. The resulting materials were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area, photoluminescence spectra (PLS) and UV-Vis diffuse reflectance spectroscopy. The XRD patterns of the as-prepared catalysts calcined at 500 degrees C exhibited only the characteristic peaks of monoclinic alpha-Bi(2)O(3). PLS analysis implied that the separation efficiency for electron-hole has been enhanced when Bi(2)O(3) was doped with rare earth. UV-Vis diffuse reflectance spectroscopy measurements presented an extension of light absorption into the visible region. The photocatalytic activity of the samples was evaluated by degradation of methyl orange (MO) and 2,4-dichlorophenol (2,4-DCP). The results displayed that the photocatalytic activity of rare earth-doped Bi(2)O(3) was higher than that of dopant-free Bi(2)O(3). The optimal dopant amount of La or Ce was 1.0 mol%. And the mechanisms of influence on the photocatalytic activity of the catalysts were discussed. CI - (c) 2012 Wiley Periodicals, Inc. Photochemistry and Photobiology (c) 2012 The American Society of Photobiology. FAU - Wu, Shuxing AU - Wu S AD - School of Chemistry and Environment, South China Normal University, Guangzhou, China. FAU - Fang, Jianzhang AU - Fang J FAU - Xu, Xiaoxin AU - Xu X FAU - Liu, Zhang AU - Liu Z FAU - Zhu, Ximiao AU - Zhu X FAU - Xu, Weicheng AU - Xu W LA - eng PT - Journal Article DEP - 20120530 PL - United States TA - Photochem Photobiol JT - Photochemistry and photobiology JID - 0376425 RN - 0 (Azo Compounds) RN - 0 (Chlorophenols) RN - 0 (Cyclohexanes) RN - 0 (Emulsions) RN - 0 (Hexanols) RN - 059QF0KO0R (Water) RN - 30K4522N6T (Cerium) RN - 6B4TC34456 (methyl orange) RN - 6CP2QER8GS (1-hexanol) RN - 6I3K30563S (Lanthanum) RN - 9002-93-1 (Octoxynol) RN - A6I4E79QF1 (bismuth oxide) RN - R669TG1950 (2,4-dichlorophenol) RN - U015TT5I8H (Bismuth) SB - IM MH - Azo Compounds/chemistry MH - Bismuth/*chemistry MH - Catalysis MH - Cerium/*chemistry MH - Chlorophenols/chemistry MH - Cyclohexanes/chemistry MH - Emulsions MH - Hexanols/chemistry MH - Hot Temperature MH - Lanthanum/*chemistry MH - Light MH - Luminescent Measurements MH - Microscopy, Electron, Transmission MH - Octoxynol/chemistry MH - *Photochemical Processes MH - Spectrophotometry, Ultraviolet MH - Water/chemistry MH - X-Ray Diffraction EDAT- 2012/04/26 06:00 MHDA- 2013/01/25 06:00 CRDT- 2012/04/26 06:00 PHST- 2012/04/26 06:00 [entrez] PHST- 2012/04/26 06:00 [pubmed] PHST- 2013/01/25 06:00 [medline] AID - 10.1111/j.1751-1097.2012.01164.x [doi] PST - ppublish SO - Photochem Photobiol. 2012 Sep-Oct;88(5):1205-10. doi: 10.1111/j.1751-1097.2012.01164.x. Epub 2012 May 30.