研究目的
To synthesize and characterize a one-dimensional Zinc(II) coordination complex and investigate its photocatalytic properties for the degradation of organic pollutants, specifically rhodamine B, under visible light irradiation.
研究成果
The synthesized CP1 coordination complex exhibits high photocatalytic activity and good recycling stability for degrading rhodamine B under visible light, primarily through a mechanism involving hydroxyl radicals. It shows potential as an effective photocatalyst for treating organic pollutants, with implications for environmental remediation applications.
研究不足
The study may have limitations in the scalability of the synthesis method, the specificity to RhB degradation, potential variability in photocatalytic performance under different environmental conditions, and the need for further optimization of the complex for industrial applications.
1：Experimental Design and Method Selection:
The study involved synthesizing the coordination complex CP1 using a solvothermal method with Zn(NO3)2·6H2O and CPDC in DMF, followed by characterization using various techniques to analyze its structure and properties, and photocatalytic tests to evaluate degradation efficiency of RhB under visible light.
2：Sample Selection and Data Sources:
Samples included synthesized CP1 crystals and RhB dye solution. Data were obtained from laboratory experiments using purchased reagents.
3：List of Experimental Equipment and Materials:
Equipment included Rigaku Ultima IV diffractometer for PXRD, JCM-6000PLUS microscope for SEM, Carlo-Erba CHNO-S microanalyzer for elemental analysis, Shimadzu TGA for thermal analysis, Nicolet Magna 550II FT-IR spectrophotometer for IR, Hitachi U-3010 spectrophotometer for UV/Vis, Hitachi F-4500 fluorescence spectrophotometer for fluorescence, and a 250W incandescent lamp for visible light irradiation. Materials included RhB, CPDC, Zn(NO3)2·6H2O, DMF, ethanol, KBr, and deionized water.
4：Experimental Procedures and Operational Workflow:
Synthesis involved heating a mixture in an autoclave at 393K for 3 days, cooling, washing, and drying. Characterization involved PXRD, SEM, elemental analysis, TGA, IR, UV/Vis, and fluorescence spectroscopy. Photocatalytic tests involved dispersing CP1 in RhB solution, irradiating with light, sampling at intervals, centrifuging, and analyzing concentration with UV/vis spectrophotometer.
5：Data Analysis Methods:
Data were analyzed using standard techniques for each instrument, including comparison with simulated patterns for PXRD, calculation of weight loss for TGA, and measurement of absorption and emission peaks for spectroscopy. Photocatalytic efficiency was calculated based on concentration changes over time.
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Powder X-ray diffractometer
Ultima IV
Rigaku
Used to acquire powder X-ray diffraction patterns for characterizing the crystal structure of CP1.
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Scanning electron microscope
JCM-6000PLUS
JEOL
Used to take SEM images to observe the morphology and structure of CP1 crystals.
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Thermogravimetric analyzer
TGA
Shimadzu
Used for thermal analysis to determine weight loss and stability of CP1 under heating.
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UV spectrophotometer
U-3010
Hitachi
Used for UV/Vis absorption spectroscopy to study optical properties of CP1.
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Fluorescence spectrophotometer
F-4500
Hitachi
Used to record fluorescence emission spectra with an excitation wavelength of 219 nm.
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Microanalyzer
CHNO-S
Carlo-Erba
Used for elemental analysis of carbon, hydrogen, and nitrogen in the coordination complex.
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FT-IR spectrophotometer
Magna 550II
Nicolet
Used to obtain infrared spectra in the range of 4000-400 cm?1 for functional group analysis.
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Incandescent lamp
250W
Used as a visible light source for photocatalytic experiments.
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Autoclave
Teflon-lined
Used for solvothermal synthesis of the coordination complex at high temperature and pressure.
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