研究目的
To develop a sunlight-sensitive photocatalyst of nanocubic-like titanium dioxide (TiO2) and N-doped graphene quantum dots (N-GQDs) for the degradation of bisphenol A (BPA) under sunlight irradiation.
研究成果
The study successfully developed a sunlight-sensitive photocatalyst of nanocubic-like TiO2 and N-GQDs, which showed enhanced photocatalytic activity for BPA degradation under sunlight. The optimal weight percentage of N-GQDs was found to be 0.5%, achieving complete BPA removal in 30 minutes. This approach offers a green, facile, and economical method for degrading endocrine chemical compounds using solar energy efficiently.
研究不足
The increase of N-GQDs weight percentage created massive oxygen vacancies that suppressed the generation of active radicals, leading to longer degradation times for BPA.
1：Experimental Design and Method Selection:
The study involved the synthesis of nanocubic-like TiO2 and N-GQDs through hydrothermal and physical mixing methods. The composite photocatalyst was characterized using various physical and chemical analyses.
2：Sample Selection and Data Sources:
Bisphenol A (BPA) was used as the model pollutant. The photocatalytic activity was evaluated under sunlight irradiation.
3：List of Experimental Equipment and Materials:
Titanium (IV) butoxide, citric acid, urea, absolute ethanol, isopropyl alcohol, dimethyl sulphoxide, p-benzoquinone, ethylenediaminetetraacetic acid disodium, and deionized water were used. Equipment included FESEM, HRTEM, XRD, PL/Raman spectroscope, FTIR, XPS, and UV-Vis spectrophotometer.
4：Experimental Procedures and Operational Workflow:
The synthesis involved hydrothermal treatment, physical mixing, and characterization. Photocatalytic activity was assessed by measuring the degradation of BPA under sunlight.
5：Data Analysis Methods:
The degradation rate was analyzed using HPLC. Active radical species were identified through scavenger tests.
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-
High-resolution transmission electron microscope
JEM-2100F
Jeol
Used to obtain images of the composite
-
X-ray diffraction
Bruker D8 advance X-ray powder diffractometer
Bruker
Used to analyze the crystalline and phase compositions
-
Fourier transform infrared spectrophotometer
Perkin Elmer Spectrum 400
Perkin Elmer
Used to obtain FTIR spectrums
-
X-ray photoelectron spectra
Axis Ultra DLD
Kratos
Used to identify the chemical compositions and surface properties
-
UV-Vis diffuse reflectance spectra
Shimadzu UV-2600
Shimadzu
Used to characterize the optical properties
-
Field emission scanning electron microscope
Hitachi SU-8000
Hitachi
Used to investigate the morphology of the composite
-
Titanium (IV) butoxide
Sigma Aldrich
Used in the synthesis of nanocubic-like TiO2
-
Citric acid
R & M Chemicals
Used in the synthesis of N-GQDs
-
Urea
R & M Chemicals
Used in the synthesis of N-GQDs
-
Absolute ethanol
Used as a solvent in the synthesis process
-
Isopropyl alcohol
Hmbg Chemicals
Used in the synthesis process
-
Dimethyl sulphoxide
UNIVAR
Used in the synthesis process
-
p-benzoquinone
Sigma Aldrich
Used as a scavenger in the photocatalytic activity test
-
Ethylenediaminetetraacetic acid disodium
ChemSoln
Used as a scavenger in the photocatalytic activity test
-
Micro-PL/Raman spectroscope
Renishaw, inVia Raman Microscope
Renishaw
Used to acquire photoluminescence (PL) and Raman spectra
-
High-performance liquid chromatography
Perkin Elmer
Used to analyze the residual concentration of BPA solution samples
-
登录查看剩余14件设备及参数对照表
查看全部
