rGO'nun P. Chrysosporium'un Mikrobiyal Aktivitesi Üzerindeki Etkisinin İncelenmesiyle Grafen Bazlı Malzemelerin Potansiyel Çevresel Risklerinin Değerlendirilmesi.

Abstract

Graphene has been used in various applications in many fields. In recent years, its annual output has reached one hundred tons. Graphene has shown great potential in analytics, medicine, electronics, energy, agriculture, and environmental remediation. With increasing applications and production, the environmental risks and hazards of graphene have increased public concern. It was a key issue in environmental risk assessments of graphene materials. Microbial degradation of graphene and graphene oxide and its degradation by fungi in the environment have been previously studied. However, reduced graphene oxide (rGO) was difficult to degrade by fungi, and there were limited studies on this subject. In this study, the white rot fungus Phanerochaete chrysosporium was incubated with the culture system rGO for one week. The independent variables of microorganism concentration, pH, and rGO concentration were analyzed with the Box Behnken statistical method using response surface methodology. The potential environmental risks of graphene-based materials were assessed by examining the effect of rGO on the microbial activity of P. chrysosporium. The results revealed that rGO inhibited microbial activity during incubation and acted as an inhibitor in the medium. In addition, pH was found to be effective in inhibiting the environment, while microbial activity decreased at low pH. Moreover, P.chrysosporium was thought to degrade the oxygen groups on the rGO surface due to its decomposition ability. To test the environmental impact of graphene-based materials in general, it was aimed at unraveling the structure-activity relationships of the fungus P. chrysosporium.