S-scheme CuInS2/ZnS heterojunctions for the visible light-driven photocatalytic degradation of tetracycline antibiotic drugs

CdBi2S4-Decorated Aminated Polyacrylonitrile Nanofiber for Photocatalytic Treatment of Cr(VI) and Tetracycline Wastewater

“…It could be observed that the splitting peaks attributed to Cd 2+ species and Bi 3+ species in the sample used were both shifted. Furthermore, the peaks of the N species of the used sample were shifted to lower binding energies, which is due to the sharing of electrons with metal ions, thus resulting in the decrease of the electron cloud density. − The O 1s energy level spectrum of the fresh sample was decomposed into two peaks at around 529.67 and 531.10 eV, belonging to surface adsorbed hydroxyls and lattice oxygens in the composite fibers, whereas the binding energies of O species of the used samples shifted to 529.41 and 531.35 eV, respectively (Figure e). , For S 2p, the peaks at 168.42, 162.73, and 161.83 eV for the fresh samples were indexed as SO 4 2– /S 2 O 3 2– , S 2p 1/2 , and S 2p 3/2 , which were located at 168.08, 162.81, and 161.97 eV, respectively, for the used samples (Figure f). ,, These sulfur defects facilitate the acceleration of carrier separation and transfer at the junction interface, thereby improving the visible light utilization. , …”

“…2− /S 2 O 3 2− , S 2p 1/2 , and S 2p 3/2 , which were located at 168.08, 162.81, and 161.97 eV, respectively, for the used samples (Figure 6f). 10,56,57 These sulfur defects facilitate the acceleration of carrier separation and transfer at the junction interface, thereby improving the visible light utilization. 58,59 The photocatalytic performance of the composite nanofibers was also tested in a TCH aqueous solution under simulated solar illumination (Figure 7).…”

“…At present, the main approaches for handling industrial wastewater both domestically and internationally are membrane separation, chemical oxidation, photocatalysis, physical adsorption, and so on. − Among these technologies, photocatalysis technology exhibits unparalleled competitive advantages in the treatment of water pollutants due to its rapid reaction rate, cost effectiveness, low energy consumption, and reusability. , However, in practical applications, the loss of catalyst during usage often leads to increased pollution levels. Constructing uniformly dispersed photocatalytic nanoparticles on the surface of a support such as nanofiber has the potential to enhance the photocatalytic performance while facilitating easier recycling of photocatalysts after use .…”

Photocatalytic Membranes Toward Practical Environmental Remediation: Fundamental, Fabrication, and Application

“…Qian et al prepared carbon quantum dots (CQDs) decorated Bi 2 WO 6 by wet-impregnation to degrade gaseous volatile organic compounds (VOCs), which expanded the absorption spec-trum to the visible region. [21] Sulfides used as photocatalysts include CdS, [22] ZnS, [23] CuInS 2 , [24] Cu 2 ZnSnS 4 , [25] etc. Chen et al successfully synthesized immobilized TiO 2 nanoribbons decorated with Au and CuS nanoparticles, and the Au-CuS-TiO 2 N-Bromosuccinimide significantly prevents the recombination of photogenic carriers and makes more effective use of the solar spectrum.…”

Biogenic Preparation of ZnO Nanostructures Using Leafy Spinach Extract for High-Performance Photodegradation of Methylene Blue under the Illumination of Natural Sunlight

“…Research on the proposed project aims at enhancing photocatalysis through the development of new classes of materials or the modification of surfaces. Therefore, a great deal of research has been conducted regarding the development of active photocatalytic materials [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. In comparison to other metal oxide semiconductors, titanium dioxide (TiO 2 ) is effective in removing dyes from water effluents, but it has been well-explored to synthesize inexpensive ZnO photocatalysts for removing synthetic organic dyes from aqueous solutions [ 32 , 33 , 34 ].…”