Sea urchin-like WO3-x loaded with Ag for photocatalytic degradation and bactericidal

Improved photocatalytic and sterilization performance of Cu doped sea urchin-like WO3−x

“…The (010) and (020) crystal planes exhibit two diffraction peaks at 2y = 23.21 and 2y = 47.51, respectively. 33 The XRD patterns of WO 3Àx and Cu-WO 3Àx were similar, indicating that the higher crystallinity of WO 3Àx was not changed after doping with Cu. Additional crystallographic data for CW3 are presented in Table S1 (ESI †).…”

PVA/WO3–x/Ag2WO4 Hydrogel for Enhanced Photocatalytic Disinfection and Accelerated Wound Healing

“…Bacteria grown on TSA medium were eluted by 0.85% saline and diluted to the concentration of bacterial solution required for the experiment (10 7 CFU/mL). For pure photocatalyst, 10 mg of photocatalyst was mixed into 20 mL of bacterial mixture and exposed to simulated sunlight for 2 h. 18 The simulated solar light source uses a 500 W xenon lamp and an AM1.5G filter. The optical power was determined to be 100 mW/cm 2 by aligning the distance between the light source and the liquid with an optical power meter.…”

“…16,17 There are many ways in which the photocatalytic performance of semiconductor materials can be improved. For example, precious metal nanoparticles are contacted with semiconductors to improve the performance through the surface plasmon resonance effect, 18 elemental doping of semiconductors is used to extend the light absorption range, 19,20 and complexing with other semiconductors to create heterojunctions is also an effective way to improve photocatalytic performance. 21 WO 3 , a common photocatalyst, has an energy band gap of 2.4−2.8 eV.…”

“…TiO 2 is considered to be one of the most promising photocatalysts, and studies have been conducted to demonstrate its photocatalytic bactericidal properties. , However, the wide band gap prevents TiO 2 from effectively using sunlight, and its short photogenerated carrier lifetime affects its photocatalytic performance. , There are many ways in which the photocatalytic performance of semiconductor materials can be improved. For example, precious metal nanoparticles are contacted with semiconductors to improve the performance through the surface plasmon resonance effect, elemental doping of semiconductors is used to extend the light absorption range, , and complexing with other semiconductors to create heterojunctions is also an effective way to improve photocatalytic performance …”