研究目的
To synthesize a novel Ag/Bi3O4Cl photocatalyst and evaluate its performance in degrading tetracycline under visible light irradiation, aiming to address environmental pollution issues.
研究成果
The Ag/Bi3O4Cl photocatalyst, especially with 1.0 wt% Ag, significantly enhances TC degradation under visible light due to improved light absorption and charge separation via SPR. Active species include ?O??, ?OH, and h?. The catalyst shows good stability and recyclability, offering a promising approach for environmental remediation.
研究不足
The study may have limitations in scalability for industrial applications, potential agglomeration of Ag nanoparticles at higher loadings reducing efficiency, and the need for further optimization under real environmental conditions. The use of specific light sources and laboratory settings may not fully replicate natural solar irradiation.
1：Experimental Design and Method Selection:
The study involved synthesizing Ag/Bi3O4Cl photocatalysts via a photodeposition process to enhance photocatalytic activity. Methods included hydrothermal synthesis for Bi3O4Cl and photodeposition for Ag loading, with characterization and activity tests under visible light.
2：Sample Selection and Data Sources:
Samples included pure Bi3O4Cl and Ag/Bi3O4Cl with varying Ag contents (0.5, 1.0, 3.0, 5.0 wt%). Tetracycline (TC) was used as the pollutant model, sourced from commercial suppliers.
3：5, 0, 0, 0 wt%). Tetracycline (TC) was used as the pollutant model, sourced from commercial suppliers. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Materials included Bi(NO3)3·5H2O, NH4Cl, AgNO3, EDTA-2Na, TBA, VC, ethanol, ethanediol from Aladdin. Equipment included XRD (Rigaku D/MAX-2500), SEM (Hitachi), TEM (Tecnai G2, FEI Co.), UV-vis spectrophotometer (UV-2450, Shimadzu), ESR spectrometer (Bruker EPR A 300-10/12), electrochemical workstation (CHI 760D), xenon lamps (250W and 300W), autoclave, muffle furnace.
4：Experimental Procedures and Operational Workflow:
Bi3O4Cl was synthesized hydrothermally, then Ag was deposited via photodeposition using a xenon lamp. Photocatalytic tests involved dispersing catalyst in TC solution, stirring in dark for adsorption equilibrium, irradiating with visible light, sampling at intervals, and measuring TC concentration via UV-vis spectroscopy. Photoelectrochemical and ESR measurements were conducted as described.
5：Data Analysis Methods:
Data were analyzed using the Langmuir-Hinshelwood model for kinetics, with rate constants calculated. ESR and trapping experiments identified active species. UV-vis DRS was used to determine band gaps.
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-
X-ray diffractometer
D/MAX-2500
Rigaku
To obtain XRD patterns of samples for crystalline structure analysis
-
SEM
Hitachi
Hitachi
To collect EDX images and analyze morphology
-
TEM
F20 S-TWIN
FEI Co.
To obtain TEM and HRTEM images for microstructure analysis
-
UV-vis spectrophotometer
UV-2450
Shimadzu
To perform UV-vis DRS for light absorption analysis
-
ESR spectrometer
EPR A 300-10/12
Bruker
To detect active species via ESR spectra
-
Electrochemical workstation
CHI 760D
CH Instruments
To conduct photocurrent and EIS measurements
-
Xenon lamp
250W
Used as light source for photodeposition and photocatalytic tests
-
Autoclave
Teflon-lined stainless-steel
For hydrothermal synthesis of Bi3O4Cl
-
Muffle furnace
For annealing samples
-
登录查看剩余7件设备及参数对照表
查看全部
