DICP OpenIR
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
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
2001
Volume11Issue:2Pages:578-583
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
WOS KeywordSOL-GEL METHOD ; MOLECULAR-SIEVES ; RAMAN-SPECTROSCOPY ; OXIDE CATALYSTS ; SURFACE ; OXIDATION ; EPOXIDATION ; COMPLEXES ; DIOXIDE ; NMR
AbstractA 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).
Language英语
WOS IDWOS:000167139700058
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138875
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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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