Influence of CeO2 loading on the structural, textural, optical and photocatalytic properties of single-pot sol-gel derived ultrafine CeO2/TiO2 nanocomposites for the efficient degradation of tetracycline under visible light irradiation

The preparation of three-dimensional flower-like TiO2/TiOF2 photocatalyst and its efficient degradation of tetracycline hydrochloride

“…[4][5][6] Over the years, and until now, almost all known symbiotic bacteria and pathogenic bacteria have acquired the ability to produce resistance to one or more antibiotics. 7,8 Compared with aerosols and soil, water phase transport is considered to be the main way for antibiotics and antibiotic resistance to spread to remote areas and society. Therefore, the treatment of antibiotic wastewater is urgent.…”

“…In recent years, several methods for treating wastewatercontaining TCH have been studied, such as microbial degradation, 11,12 adsorption, 2,5,9 electrochemical method, 13 and photocatalytic degradation. 6,7 Although these methods have a certain removal effect on TCH in wastewater, most of them have some problems. Due to the antibacterial property of TCH, microorganisms do not easily survive in the process of biodegradation, and traditional microbial degradation methods (such as the activated sludge method) cannot effectively remove TCH residues in wastewater.…”

“…[18][19][20] TiO 2 , as the most commonly used semiconductor photocatalyst, is nontoxic and chemically stable. 5,7 However, it has a wide energy band gap (3.0-3.2 eV, which means it only reacts to UV) and a high carrier recombination rate. 21,22 So far, much effort has been made to make up for these shortcomings, such as metal doping, 23 non-metal doping, 24,25 and building a heterogeneous semiconductor composite.…”

Antibiotics Contaminated Irrigation Water: An Overview on Its Impact on Edible Crops and Visible Light Active Titania as Potential Photocatalysts for Irrigation Water Treatment

“…Moreover, after five cylcels of use (Wang W. et al, 2017), the samples were characterized by XRD and FTIR and no structrual changes were detected, confirming the textural and structural stability of the Fe 3 O 4 /rGO/TiO 2 catalyst. For the CeO 2 /TiO 2 binary heterojunction, Pudukudy et al (Pudukudy et al, 2020) confirmed using FESEM elemental mapping, no Ce leaching after the 7 th use of the catalyst. Similarly, Bi et al reported that the leached percentages of Mn and Co metals from MnCo 2 O 4.5 /TiO 2 catalyst were in the range (4-10%).…”

Fabrication of Graphene-Based TiO2@CeO2 and CeO2@TiO2 Core–Shell Heterostructures for Enhanced Photocatalytic Activity and Cytotoxicity

“…This would be because of the charge transfer in the material, especially from the transferred electrons from the valence band (VB) to conduction band (CB). 68 Also, the band gap edge of CeO 2 was around 500 nm. The CeO 2 @ TiO 2 core−shell nanospheres showed the redshift compared with TiO 2 .…”