فهرس المقالات nano TiO2

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  1 - Simultaneous Cross-linking and Antibacteial Finishing of Cationized Cotton by 3-chloro2-hydroxy propyl tri methyl ammonium chloride (Quat -188) and nano TiO2
  Ali Nazari
  10.30495/ijtnbm.2023.1974253.1015
  In this research, the simultaneous cross-linking and antibacterial finishing of bleached cotton and cationized cotton by 3-chloro2-hydroxy propyl tri methyl ammonium chloride (Quat -188) with butane tetra carboxylic acid (BTCA) and nano TiO2 was explored. Butane tetra c أکثر

  In this research, the simultaneous cross-linking and antibacterial finishing of bleached cotton and cationized cotton by 3-chloro2-hydroxy propyl tri methyl ammonium chloride (Quat -188) with butane tetra carboxylic acid (BTCA) and nano TiO2 was explored. Butane tetra carboxylic acid can be linked to the cellulosic chains by ionic and covalent bonds. To do this, different concentrations of nano TiO2 and BTCA were examined to obtain the highest cross-linking and antibacterial effects Various characteristics of samples such as antibacterial against different microorganisms like two gram-positive bacteria (Bacillus cereus, Staphylococcus aureus), one gram-negative bacteria (Escherichia coli), and one fungus (Candida albicans), crease recovery angle, bending length, yellowness index, weight changes, water drop absorption time were investigated. The results showed that both the bleached cotton, and cationized cotton can be finished by the optimum concentration of nano TiO2 and BTCA for producing a cotton fabric with anti-wrinkle and antibacterial properties. تفاصيل المقالة
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  2 - Self-Cleaning Measurement of Nano-Sized Photoactive TiO2
  Majid Farahmandjou
  Titanium dioxide (TiO2)nanoparticles have been frequently employed in the environmental treatment and purification purposes as a cheap and highly efficient photocatalyst. A photocatalyst can facilitate the breakdown and removal of a variety of environmental pollutants a أکثر

  Titanium dioxide (TiO2)nanoparticles have been frequently employed in the environmental treatment and purification purposes as a cheap and highly efficient photocatalyst. A photocatalyst can facilitate the breakdown and removal of a variety of environmental pollutants at room temperature. TiO2 photocatalyst is the best candidatebecause of its strong oxidized ability, non-toxicity and longthermal photostability. The TiO2 is also importantand need deep studies because it can be used as self-cleaningand anti-fogging glass in future.In this paper, TiO2 nanoparticles were synthesized by liquid phase method. The samples were characterized by x-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses after heat treatments. The XRD results show the sharp picks after annealing process. The TEM results reveal that the size of nanoparticles is in the range of 20-40 nm in diameter. Raman scattering pattern of the TiO2 nanoparticles confirm the TEM analysis and indicate the anatase phase تفاصيل المقالة
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  3 - Nano TiO2@SiO2 as an efficient and reusable catalyst for the synthesis of multi-substituted imidazoles
  Maryam Haghighi Kobra Nikoofar
  Nano TiO2 supported on SiO2 (Nano TiO2@SiO2) as a solid Lewis acid, was described to be an effective and reusable catalyst for one-pot three-component reaction of benzil, aryl aldehydes and ammonium acetate for the synthesis 2-aryl-4,5-diphenyl-1H-imdazoles synthesis. T أکثر

  Nano TiO2 supported on SiO2 (Nano TiO2@SiO2) as a solid Lewis acid, was described to be an effective and reusable catalyst for one-pot three-component reaction of benzil, aryl aldehydes and ammonium acetate for the synthesis 2-aryl-4,5-diphenyl-1H-imdazoles synthesis. To explore the high efficacy of the catalytic system the four-component cyclization of benzil, aryl aldehydes, ammonium acetate and anilines has also been accomplished successfully to obtain their 1,2-diaryl-4,5-diphenyl-1H-imidazole adducts. A plausible mechanism has also been expressed. The catalyst has been recovered and its reusability confirmed in 4 runs. High yields, simple operation, easy-work procedure, mild reaction conditions in addition with reusability are some advantages of this protocol. تفاصيل المقالة