Structural Biology and Nanomedicine Laboratory, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, 769008, Odisha, India.
Environ Sci Pollut Res Int. 2022 Jun;29(26):40226-40240. doi: 10.1007/s11356-022-18796-w. Epub 2022 Feb 4.
Here, conjugate of nano-graphene oxide (GO) and titanium dioxide nanoparticle (nTiO) was proposed for the photocatalytic degradation of two toxic azo dyes, Congo red (CR) and Methylene blue (MB), under sunlight irradiation. Furthermore, the optimized weight ratio between GO and nTiO of 1:5 demonstrated the highest degradation efficiency. The nanoconjugate induced 85% degradation of 40 ppm of CR in 60 min and a complete degradation within 70 min, while it degraded more than 90% of 20 ppm of MB in 80 min. The photocatalyst can be reused for five cycles of photocatalysis. Thus, the photocatalytic potential of GO/nTiO under visible light may be used as a very suitable and cost-effective photocatalyst industrially for the removal of toxic dyes from water.
在这里，提出了纳米氧化石墨烯（GO）和二氧化钛纳米粒子（nTiO）的缀合物，用于在阳光照射下光催化降解两种有毒偶氮染料，刚果红（CR）和亚甲蓝（MB）。此外，GO 和 nTiO 的最佳重量比为 1:5，显示出最高的降解效率。纳米缀合物在 60 分钟内将 40ppm 的 CR 降解了 85%，并在 70 分钟内完全降解，而在 80 分钟内将 20ppm 的 MB 降解了 90%以上。该光催化剂可重复使用五次进行光催化。因此，GO/nTiO 在可见光下的光催化潜力可作为一种非常合适且具有成本效益的工业光催化剂，用于从水中去除有毒染料。
