The complex morphologies of Ti-MCM-41 templated by Gemini surfactant

Journal Article · Thu Jan 18 04:00:00 EST 2007 · Materials Research Bulletin

OSTI ID:20900950

Jun, Hu ^[1]; Lihui, Zhou ^[1]; Xia, Han ^[1]; Honglai, Liu ^[1]; Ying, Hu ^[1]

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1. Department of Chemistry and Laboratory for Advanced Materials, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China)

The ordered hexagonal mesoporous materials of Ti-MCM-41 have been synthesized by using the Gemini surfactant bis(hexadecyldimethylammonium bromide)hexane (GEM16-6-16) as template. The X-ray diffraction (XRD) and FTIR results provide the evidence that we can adjust the pore size by varying the Ti/Si ratio. However, there is a limit of Ti/Si ratio favoring the formation of specific structures; the ordered structures will be destructed at higher Ti/Si ratio. The scanning electron micrograph (SEM) and transmission electron micrograph (TEM) images reveal that the Ti-MCM-41 materials exhibit diverse morphologies, including ordered rods, threads and bundles, hexagonal flakes, tubes, discoid rings and helix tubes. We tentatively elucidate that the formation of the complex morphologies can be attributed to the crystal growth mechanism and the defect theory.

• OSTI ID: 20900950
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 1 Vol. 42; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BROMIDES
COMPOSITE MATERIALS
CRYSTAL DEFECTS
CRYSTAL GROWTH
ELECTRON SCANNING
HEXANE
INFRARED SPECTRA
MORPHOLOGY
RINGS
RODS
SCANNING ELECTRON MICROSCOPY
SURFACTANTS
TUBES
X-RAY DIFFRACTION