PMID- 26852352 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160614 LR - 20170725 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 468 DP - 2016 Apr 15 TI - Synthesis, characterization, and visible-light-driven photocatalytic performance of W-SBA15. PG - 284-291 LID - S0021-9797(16)30078-9 [pii] LID - 10.1016/j.jcis.2016.01.077 [doi] AB - A series of tungsten-containing mesoporous SBA15 with different tungsten contents were prepared through a direct co-condensation sol-gel method and then analyzed by various techniques. XRD patterns revealed that the original mesoporous morphology was maintained after introducing tungsten species and forms of tungsten species were changed from incorporated tungsten to isolated tungsten species or low oligomeric tungsten oxide species, and finally to crystalline WO3 with the increase of tungsten precursor content, which were also proven by HRTEM images, UV-Vis DRS, and FT-IR spectra. The W-SBA15 samples exhibited satisfactory photocatalytic performance toward degradation of dye Rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP). In particular, the best candidate, sample 10%W-SBA15 showed an apparent reaction rate constant for RhB that was nearly 10 times as high as that of bulk WO3. The enhancement of photocatalytic capability was attributed to the mesoporous morphology with enlarged surface areas, negatively charged surface, and favorable tungsten forms such as incorporated tungsten, isolated tungsten or low oligomeric tungsten oxide species. In addition, active radicals trapping experiments and DMPO spin-trapping ESR spectra indicated that photogenerated holes were major oxidative species during photocatalysis. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Chang, Fei AU - Chang F AD - School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China. Electronic address: feichang@usst.edu.cn. FAU - Wang, Jie AU - Wang J AD - School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China. FAU - Luo, Jieru AU - Luo J AD - School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China. FAU - Sun, Junrong AU - Sun J AD - School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China. FAU - Hu, Xuefeng AU - Hu X AD - Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China. Electronic address: xfhu@yic.ac.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160204 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 OTO - NOTNLM OT - 2,4-Dichlorophenol OT - Mechanism OT - Photocatalysis OT - Rhodamine B OT - W-SBA15 EDAT- 2016/02/08 06:00 MHDA- 2016/02/08 06:01 CRDT- 2016/02/08 06:00 PHST- 2015/09/29 00:00 [received] PHST- 2016/01/29 00:00 [revised] PHST- 2016/01/30 00:00 [accepted] PHST- 2016/02/08 06:00 [entrez] PHST- 2016/02/08 06:00 [pubmed] PHST- 2016/02/08 06:01 [medline] AID - S0021-9797(16)30078-9 [pii] AID - 10.1016/j.jcis.2016.01.077 [doi] PST - ppublish SO - J Colloid Interface Sci. 2016 Apr 15;468:284-291. doi: 10.1016/j.jcis.2016.01.077. Epub 2016 Feb 4.