Assembling UiO-66@TiO2 nanocomposites for efficient photocatalytic degradation of dimethyl sulfide

Designing and Fabricating a Vulcanized ZnAl LDH-Modified g-C3N4 Heterojunction for Enhanced Visible-Light-Driven Photocatalytic Degradation Activity

“…Figure c,d displays the change in the degradation rate of TC with ZASCN-3 heterojunctions in the presence of different TC concentrations (10–40 mg/L) and the first-order degradation kinetic plot, respectively. After increasing the initial concentration from 10 to 20 ppm, the photodegradation efficiency of TC increased from 88.10 to 94.05%, and the corresponding degradation rate constant increased from 0.011 to 0.016 min –1 , respectively, demonstrating that the reactive sites on the surface of ZASCN-3 materials were unsaturated within the concentration range . However, as the TC concentration rose from 20 to 40 ppm, the decomposition rate of TC gradually decreased from 94.05% (0.016 min –1 ) to 91.35% (0.009 min –1 ).…”

A high-performance electrochemical sensor for sensitive detection of tetracycline based on a Zr-UiO-66/MWCNTs/AuNPs composite electrode

“…26 The frequency bands at 823 cm À1 and 748 cm À1 may be related to the vibrations of the C-H and O-H bend in the terephthalic acid ligand, respectively, 27 and the sharp peak presented at 545 cm À1 should be caused by the asymmetric stretching vibration of Zr-(OC). 25 The strong absorption peaks at 664 and 486 cm À1 correspond to the asymmetric stretching vibration of the O-Zr-O bond. 28 Compared with pristine Zr-UiO-66, the band at 1660 cm À1 (asymmetric stretching vibration of C]O) was remarkably enhanced and the peaks at 1157 and 1100 cm À1 assigned to the vibrations of C-OH also improved for Zr-UiO-66/ MWCNTs (Fig.…”

“…S2,† for the Zr-UiO-66, the peaks at 1660 cm −1 were attributed to the asymmetric stretching vibration of the CO in carboxyl group and 1398 cm −1 was assigned to the symmetric stretching of O–C–O. 25 The characteristic bands at 1589, 1559 cm −1 , and 1500 cm −1 may correspond to the CC vibration of the benzene ring. 26 The frequency bands at 823 cm −1 and 748 cm −1 may be related to the vibrations of the C–H and O–H bend in the terephthalic acid ligand, respectively, 27 and the sharp peak presented at 545 cm −1 should be caused by the asymmetric stretching vibration of Zr-(OC).…”

Metal–organic framework‐based heterojunction photocatalysts for organic pollutant degradation: design, construction, and performances

“…The main disadvantages of g-C 3 N 4 are the limited electron migration rate caused by poor conductivity and the fewer active sites owing to the low specific surface area and poor hydrophilicity; these drawbacks make it necessary to explore other materials to obtain MOF-based type-II heterojunctions, such as metal oxides, chalcogenides, and perovskites (TiO 2 , 53,145 CdS, 146 WO 3 , 147,148 Bi 2 WO 6 ). 54,149,150 The photocatalytic activity of these heterojunctions is comparable to that of the MOF@g-C 3 N 4 composites.…”

“…However, the stability of this photocatalyst remains unknown, so it is interesting to investigate its reusability. Another example of the MOF@TiO 2 with type‐II heterojunction is the composite obtained by Man et al ., 145 who investigated the performances of UiO‐66@TiO 2 photocatalysts in the photocatalytic degradation of dimethyl sulfide under UV irradiation. They demonstrated that the use of a hybrid with the MOF:TiO 2 mass ratio of 1:3 allows for the highest photocatalytic activity, which was about 17.8 and 7.1 times higher than that of the pristine UiO‐66 and TiO 2 , respectively.…”