研究目的
Investigating the synthesis and photocatalytic performance of N-F-codoped TiO2/SiO2 nanocomposites for the simultaneous degradation of organic water pollutants and reduction of Cr (VI) under visible and solar irradiation.
研究成果
The N-F-codoped TiO2/SiO2 nanocomposites exhibited enhanced photocatalytic activity under visible and solar light, with efficient simultaneous removal of organic pollutants and Cr (VI). The system showed promising performance under various outdoor conditions, indicating its potential for environmental remediation applications.
研究不足
The study focuses on the synthesis and photocatalytic performance under specific conditions, and the scalability and long-term stability of the photocatalyst in real-world applications are not extensively explored.
1:Experimental Design and Method Selection:
The sol-gel method was used to synthesize N-F-codoped TiO2/SiO2 nanocomposites, followed by immobilization on glass beads using dip-coating and heat attachment methods.
2:Sample Selection and Data Sources:
Glass beads were used as substrates for the photocatalyst. The photocatalytic activity was evaluated using a mixture of three azo dyes and Cr (VI).
3:List of Experimental Equipment and Materials:
Included titanium (IV) n-butoxide, urea, ammonium fluoride, silica gel, and various characterization instruments like XRD, FT-IR, DRS-UV/Vis, PL, FESEM, EDX, TEM, and N2 adsorption/desorption analyzers.
4:Experimental Procedures and Operational Workflow:
The synthesis involved hydrolyzing titanium (IV) n-butoxide in acidic conditions, adding urea and ammonium fluoride as dopants, and silica gel, followed by stirring, coating on glass beads, drying, and calcination.
5:Data Analysis Methods:
The photocatalytic performance was evaluated by measuring the removal efficiency of pollutants under visible and solar light, with optimization of pH, flow rate, and photoreactor angle.
独家科研数据包,助您复现前沿成果,加速创新突破
获取完整内容-
Fourier-transform infrared spectroscopy
Thermo Nicolet 870 Spectrometer
Thermo Nicolet
Obtaining the FT-IR spectra of the samples
-
Photoluminescence spectrometer
Cary Eclipse
Cary
Determination of the PL spectra of the samples
-
Diffuse re?ectance UV/Vis spectrometer
Avantes Avaspec-2048-TEC
Avantes
Measurement of the DRS-UV/Vis spectra of the samples
-
X-ray diffractometer
Seifert 3003 PTS
Seifert
Determination of the XRD pattern of the prepared catalysts
-
Field emission scanning electron microscope
MIRA3 TESCAN-XMU
TESCAN
Characterization of the morphology and size of nanoparticles
-
Transmission electron microscope
Philips CM30
Philips
Observation of the images of prepared nanoparticles
-
Nitrogen adsorption/desorption analyzer
Belsorp mini II
Belsorp
Determination of the nitrogen adsorption/desorption isotherms
-
UV/Vis spectrophotometer
Varian Cary300
Varian
Control of the degradation process of the pollutants
-
Spectrophotometer
Hach DR5000
Hach
Measurement of total organic carbon of the treated and untreated samples
-
Spectrometer
Varian SpectraAA200
Varian
Determination of total chromium of the treated samples
-
登录查看剩余8件设备及参数对照表
查看全部