研究目的
To reveal how morphology and mixed phase TiO2 NRs exhibited better H2 production activity.
研究成果
The 1-D mixed phase TiO2 NRs synthesized via ionothermal method showed superior photocatalytic H2 generation activity compared to P-25, attributed to the synergetic effect and unique optical properties of the anatase-rutile mixed-phase system. The 1-D structure facilitates effective charge carrier transfer, enhancing photocatalytic efficiency.
研究不足
The study focuses on the synthesis and photocatalytic activity of TiO2 NRs under specific conditions (solar/UV light irradiation, water-glycerol mixture). The scalability and long-term stability of the photocatalytic system were not addressed.
1：Experimental Design and Method Selection:
Facile ionothermal method was employed to synthesize 1-D mixed phase TiO2 NRs using ionic liquid as the reaction medium.
2：Sample Selection and Data Sources:
Titanium tetrachloride and 1-(2-methoxyethyl)-3-methylimidazolium methanesulfonate (MOEMIMS) IL were used as precursors.
3：List of Experimental Equipment and Materials:
Teflon tube, D-5000 Siemens-Bruker-AXS X-ray diffractometer, Lambda-35 spectrophotometer, Bruker Alpha-P spectrometer, thermogravimetric analyser 2950, HORIBA LabRam HR800, JEOL-JSM-6390LV scanning electron microscopy, JEOL/JEM 2100 high-resolution transmission electron microscopy.
4：Experimental Procedures and Operational Workflow:
TiO2 NRs were synthesized by heating a mixture of TiCl4 and MOEMIMS IL at 140°C for 24h, followed by washing and calcination.
5：Data Analysis Methods:
XRD, UV-Vis DRS, FTIR, Raman spectroscopy, TG-DTA, SEM, TEM were used for characterization.
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Lambda-35 spectrophotometer
Lambda-35
Perkin Elmer
UV-Vis diffuse reflectance spectra recording
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Bruker Alpha-P spectrometer
Alpha-P
Bruker
FTIR spectrum collection
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HORIBA LabRam HR800
LabRam HR800
HORIBA
Raman spectrum recording
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JEOL-JSM-6390LV scanning electron microscopy
JSM-6390LV
JEOL
Morphologies and particle sizes observation
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JEOL/JEM 2100 high-resolution transmission electron microscopy
JEM 2100
JEOL
Morphologies and particle sizes observation
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Titanium tetrachloride
Sigma Aldrich
Precursor for TiO2 nanorods synthesis
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1-(2-methoxyethyl)-3-methylimidazolium methanesulfonate
MOEMIMS
Ionic liquid used as reaction medium
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D-5000 Siemens-Bruker-AXS X-ray diffractometer
D-5000
Siemens-Bruker-AXS
X-ray powder diffraction data collection
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Thermogravimetric analyser 2950
2950
Thermogravimetric and differential temperature analysis measurement
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