Facile construction of 2D g-C3N4 supported nanoflower-like NaBiO3 with direct Z-scheme heterojunctions and insight into its photocatalytic degradation of tetracycline

Self-Assembly of Bi2Sn2O7/β-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

“…Figure a shows the PL spectra of the Bi 2 Sn 2 O 7 /β-Bi 2 O 3 heterojunction (excitation wavelength [λ ex ]: 530 nm). Semiconductors with higher PL emissions can recombine more photocarriers in general. − BSO/BO-0.4 had a lower quenching PL emission intensity than Bi 2 Sn 2 O 7 and β-Bi 2 O 3 , which indicates that construction of the Bi 2 Sn 2 O 7 /β-Bi 2 O 3 heterojunction hinders the recombination of the photogenerated carriers, ensuring that the photogenerated carriers last longer and that interfacial charge transfer is more efficient. Thus, the photocatalytic performance of the Bi 2 Sn 2 O 7 /β-Bi 2 O 3 heterojunction could be improved (notably, BSO/BO-0.4 had the lowest PL emission intensity).…”

3D chrysanthemum-like g-C3N4/TiO2 as an efficient visible-light-driven Z-scheme hybrid photocatalyst for tetracycline degradation

“…23,29 It has three absorption regions, among which the broad peak centered at 3155 cm −1 is ascribed to the stretching vibration of the adsorbed H 2 O and N–H bond, and the peaks ranging from 1250 to 1630 cm −1 are ascribed to the typical CN stretching vibration and the aromatic mode of C–N stretching. 30 The sharp peak at about 809 cm −1 is the breathing mode of triazine units. 23,29,30 For pure TiO 2 , the broad peak at about 3433 cm −1 is the OH stretching of surface adsorbed H 2 O, the peak at about 1635 cm −1 is assigned to the OH bending modes of water molecules.…”

“…30 The sharp peak at about 809 cm −1 is the breathing mode of triazine units. 23,29,30 For pure TiO 2 , the broad peak at about 3433 cm −1 is the OH stretching of surface adsorbed H 2 O, the peak at about 1635 cm −1 is assigned to the OH bending modes of water molecules. 31 The absorption peak below 850 cm −1 is attributed to the stretching vibration mode of Ti–O–Ti.…”

Chemical Vapor Deposition Growth of MoS2 on g-C3N4 Nanosheets for Efficient Removal of Tetracycline Hydrochloride

“…At present, there are many ways to remove antibiotics such as biological method, photocatalytic oxidation method, membrane filtration method, and adsorption method. − The adsorption method not only has low cost and simple operation but also avoids secondary pollution. − Xiang et al studied the influencing factors and mechanism of adsorption for TCH on ball milled biochar (BM-biochar). The adsorption capacity of BM-biochar for TCH was 84.54 mg/g.…”