Enhanced visible‐light‐driven photocatalytic activities of LiInO₂ by Mo⁶⁺‐doping strategy

Abstract

A novel visible-light-driven photocatalyst of Mo-doped LiInO 2 nanocomposite was successfully synthesized through a sol-gel method. The effect of Mo-doping concentrations on the microstructures and properties of LiInO 2 was characterized by X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy, photoluminescence, and ultraviolet-visible absorption spectra. The photocatalytic properties of the as-prepared samples were evaluated by the photocatalytic degradation of methylene blue (MB) dye under visible-light irradiation. The results demonstrated that the photocatalytic activity of 6% Mo-LiInO 2 reached to 98.6%, which was much higher than that of the undoped photocatalyst LiInO 2 (only 46.8%). The enhanced photocatalytic activity is ascribed to Mo-doping strategy. The holes play an important role in the process of the photodegradation of MB. The superior photocatalytic activity of the as-prepared Mo-LiInO 2 nanocomposites suggests a potential application for organic dye degradation of wastewater remediation. This work provides a further understanding on tailoring the band structure of semiconductor photocatalyst for enhancing visible-light absorption and promoting electron-hole separation by Mo-doping strategy.

Biodegradable Hollow MoSe2/Fe3O4 Nanospheres as the Photodynamic Therapy-Enhanced Agent for Multimode CT/MR/IR Imaging and Synergistic Antitumor Therapy

“…From Figure 6G, the characteristic diffraction peaks of the sample after degradation can be assigned to MoO 3 (JCPDS: 47-1320) and Fe 2 (MoO 4 ) 3 (JCPDS: 35-0183). As shown in XPS, the emerging characteristic peaks at 232.7 and 235.7 eV are assigned to the Mo 6+ 3d 5/2 and Mo 6+ 3d 3/2 (Figure 6H), 59 and the Se 2− is also detected (Figure S19A). However, without Fe 3 O 4 , it is difficult for the pure MoSe 2 to be degraded as displayed in Figure 6I,J.…”

One-pot synthesis of Cu2O/C@H-TiO2 nanocomposites with enhanced visible-light photocatalytic activity

“…Triethanolamine (TEOA, 0.01 mol L À1 ), isopropyl alcohol (IPA, 0.02 mol L À1 ), and p-benzoquinone (BZQ, 0.1 mmol L À1 ) are used as scavengers of photogenerated holes (h + ), hydroxyl radical ($OH), and superoxide radicals ($O 2À ), respectively. [52][53][54] Meanwhile, the experiment with no scavenger under the same experimental conditions is carried out for compared. The addition of TEOA and BZQ in the experiment cause a signicant decrease in photocatalytic degradation, indicating that photogenerated holes (h + ), and superoxide radicals ($O 2À ) play a major role in the degradation of MB.…”

High-throughput screening of heat-shielding carrier-doped semiconductor materials via first principles calculations

“…42) K 2 CdO 2 43) and Mg 2 SnO 4 44) are used in battery electrodes. CaIn 2 O 4 , 45) Sr 2 Sb 2 O 7 , 46) and LiInO 2 47) are photocatalysts. Cd 2 SiO 4 is used in electrochemical hydrogen storage.…”