Department of Chemistry, University of La Rioja, C/Madre de Dios 53, 26006, Logroño, La Rioja, Spain.
Centro de Investigación en Síntesis Química (CISQ), University of La Rioja, C/Madre de Dios 53, 26006, Logroño, La Rioja, Spain.
Photochem Photobiol Sci. 2022 Mar;21(3):337-347. doi: 10.1007/s43630-022-00172-9. Epub 2022 Feb 2.
The photocatalytic degradation of paracetamol (a common analgesic also known as acetaminophen) in ultrapure water with different photocatalytic systems was performed under ultraviolet or visible irradiation. The photocatalysts employed were: commercial Degussa-P25 TiO and Au-TiO under UVA irradiation (365 nm) and g-CN and Au-g-CN under visible light irradiation (low-power (4 × 10 W) white light LEDs), improving the effectiveness of degradation rates when the gold nanoparticles (Au NPs) were combined with the semiconductors. The nanostructured photocatalysts were synthesised and characterised by transmission electron microscope (TEM), UV-vis diffuse reflectance spectroscopy and, in the case of g-CN photocatalysts by X-ray photoelectron spectroscopy (XPS). The influence of the pH in the depletion of paracetamol with g-CN and visible light was evaluated. In addition, the stability and lifetime of the photocatalyst g-CN in the degradation of paracetamol were studied.
在超纯水中，采用不同的光催化体系，在紫外光或可见光照射下，对扑热息痛（一种常见的镇痛药，也称为对乙酰氨基酚）进行光催化降解。所使用的光催化剂为：在 UVA 照射（365nm）下的商业 Degussa-P25 TiO 和 Au-TiO，以及在可见光照射（低功率（4×10 W）白光 LED）下的 g-CN 和 Au-g-CN，当金纳米粒子（Au NPs）与半导体结合时，提高了降解速率的有效性。通过透射电子显微镜（TEM）、紫外-可见漫反射光谱对纳米结构光催化剂进行了合成和表征，对于 g-CN 光催化剂，还通过 X 射线光电子能谱（XPS）进行了表征。评估了 g-CN 和可见光在耗尽扑热息痛时 pH 的影响。此外，还研究了 g-CN 光催化剂在降解扑热息痛过程中的稳定性和寿命。
