国产一级a毛一级a看免费视频,久久久久久国产一级AV片,免费一级做a爰片久久毛片潮,国产精品女人精品久久久天天,99久久久无码国产精品免费了

 文獻名： Cr2O3/cellulose hybrid nanocomposites with unique properties: Facile synthesis, photocatalytic, bactericidal and antioxidant application

 

作者： eng Lu^a Yongxia Cui^a Suxia Zhao^b Ali Fakhri^cd 

^a College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China

^b Third Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450008, China

^c Department of Chemistry, Nano Smart Science Institute, Tehran, Iran

^d Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran

 

 

摘要：Development of high responsive photocatalysts for the degradation of dye from water is a significance method to solve the difficulties of water contamination. In the present project, Cr₂O₃ nanoparticles were decorated onto cellulose through a facile synthesis method, which was exposed to characterization by XRD, FESEM, DLS, PL, and UV–vis spectroscopy. The structural attributes confirmed the presence of rhombohedral phase of Cr₂O₃ nanoparticles. The mean crystal size of Cr₂O₃, and Cr₂O₃/cellulose nanocomposites were 38.50 nm, and 50.11 nm, respectively. The band gap values (Eg) of Cr₂O₃, and Cr₂O₃/cellulose nanocomposites were was found 3.00, and 2.53 eV, respectively. Moreover, the morphological and optical studies have been showed the impressive photocatalytic properties of the prepared Cr₂O₃/cellulose nanocomposites. The photocatalytic efficiency of Cr₂O₃, and Cr₂O₃/cellulose nanocomposites has been investigated for the photo-degradation of crystal violet in the ultraviolet light region. The Cr₂O₃/cellulose indicated promising photocatalytic performance and up to 99.65% of the crystal violet was photo-degraded in 40 min. The obtained crystal violet degradation results were fitted onto a Langmuir-Hinshelwood (L-H) plot. The antioxidant performances of Cr₂O₃, and Cr₂O₃/cellulose were analyzed. The beneficial antibacterial performance of the Cr₂O₃/cellulose nanocomposites was tested by various bacteria as Escherichia coli, Pseudomonas aeruginosa, staphylococcus aurous, and Streptococcus pyogenes.