Jishma P, Roshmi Thomas, Snigdha S, Radhakrishnan E K
1School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala 686 560 India.
2International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala 686 560 India.
3 Biotech. 2018 Feb;8(2):97. doi: 10.1007/s13205-018-1116-3. Epub 2018 Jan 25.
In the study, biogenic gold nanoparticles (AuNPs) were used for the photocatalytic degradation of triphenylmethane dyes Victoria blue B (VBB) and R (VBR). The process was found to result in an approximate degradation of 65 and 52%, respectively, for VBB and VBR within a period of 8 h. The relative rate of photocatalytic degradation of VBB and VBR was identified to be 0.0195 ± 0.0031/min and 0.0295 ± 0.0025/min, respectively, by using the Langmuir-Hinshelwood model. By using the model system, the degradation products were demonstrated to have non-toxic effect. Moreover, the less toxic nature of AuNPs used for dye removal highlights its feasibility for large-scale application. Hence, the AuNPs-based photocatalytic dye degradation as described in the study is cost-effective, rapid and environment-friendly.
在该研究中，生物源金纳米颗粒（AuNPs）被用于光催化降解三苯甲烷染料维多利亚蓝B（VBB）和维多利亚蓝R（VBR）。结果发现，在8小时内，VBB和VBR的降解率分别约为65%和52%。通过使用朗缪尔-欣谢尔伍德模型，确定VBB和VBR的光催化降解相对速率分别为0.0195±0.0031/分钟和0.0295±0.0025/分钟。通过使用该模型系统，证明降解产物具有无毒作用。此外，用于去除染料的AuNPs毒性较小，突出了其大规模应用的可行性。因此，该研究中描述的基于AuNPs的光催化染料降解具有成本效益高、速度快和环境友好的特点。
