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Preparation, characterization and photocatalytic properties of singly and doubly titania-modified mesoporous silicate MCM-41 by varying titanium precursors
Zheng, S; Gao, L; Zhang, QH; Zhang, WP; Guo, JK
刊名JOURNAL OF MATERIALS CHEMISTRY
2001
11期:2页:578-583
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Materials Science
关键词[WOS]SOL-GEL METHOD ; MOLECULAR-SIEVES ; RAMAN-SPECTROSCOPY ; OXIDE CATALYSTS ; SURFACE ; OXIDATION ; EPOXIDATION ; COMPLEXES ; DIOXIDE ; NMR
英文摘要A series of titania-modified MCM-41 have been synthesized from varying three kinds of titanium precursors [Ti(OBun)(4), Ti(OBun)(3)(acac), Ti(OBun)(2)(acac)(2)] respectively and mesoporous molecular sieve MCM-41, in which titania existed as single or double layers. The samples were characterized by powder X-ray diffraction (XRD), nitrogen adsorption-desorption at 77 K, Si-29 MAS NMR, FTIR and Raman spectroscopy, as well as by solid state diffuse reflectance UV-VIS spectroscopy. The titanium precursor was cocondensed with the active silanol groups of MCM-41 via Si-O-Ti bonds and the resulting titania modified the mesopore walls of MCM-41 after hydrolysis and calcination. In the titania-modified MCM-41 samples, although the titania species were in an amorphous state and in tetrahedral coordination rather than octahedral coordination, which exists extensively in crystalline titania, they exhibited high photocatalytic activity for the photodecomposition of phenol and the photoreduction of Cr(vi) to Cr(iii).
语种英语
WOS记录号WOS:000167139700058
引用统计
被引频次:50[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138875
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Zheng, S,Gao, L,Zhang, QH,et al. Preparation, characterization and photocatalytic properties of singly and doubly titania-modified mesoporous silicate MCM-41 by varying titanium precursors[J]. JOURNAL OF MATERIALS CHEMISTRY,2001,11(2):578-583.
APA Zheng, S,Gao, L,Zhang, QH,Zhang, WP,&Guo, JK.(2001).Preparation, characterization and photocatalytic properties of singly and doubly titania-modified mesoporous silicate MCM-41 by varying titanium precursors.JOURNAL OF MATERIALS CHEMISTRY,11(2),578-583.
MLA Zheng, S,et al."Preparation, characterization and photocatalytic properties of singly and doubly titania-modified mesoporous silicate MCM-41 by varying titanium precursors".JOURNAL OF MATERIALS CHEMISTRY 11.2(2001):578-583.
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