During the past few years, several procedures have been established for the synthesis of graphene and its derivatives, including mechanical exfoliation, SNX-5422 research buy epitaxial growth, unzipping carbon nanotubes, exfoliation of GO, and liquid-phase exfoliation of graphite [21]. Moreover, several other

methods were implemented to prepare high-quality graphene such as chemical vapor deposition PI3K inhibitor onto thin films of metal, epitaxial growth on electrically insulating surfaces like silicon carbide, and the scotch tape method [21]. All of these methods can produce highly crystalline graphene but are not suitable for mass production [22, 23]. Several researchers have attempted to propose environmentally friendly and green approach including flash photo reduction [24] hydrothermal dehydration [22], solvothermal reduction [23], and catalytic [25] and photocatalytic reduction [26]. The most promising method for the large-scale production of graphene is the chemical oxidation of graphite, conversion of the resulting graphite oxide to GO, and subsequent reduction of GO. The exfoliation of GO is one of the well-established methods for the mass production of graphene in the presence of some chemical reducing

agents such as hydrazine and sodium borohydride [27, 28]. The usage of strong chemical reducing ATM inhibitor agents such as hydrazine is found to be corrosive, highly

Myosin explosive, and highly toxic [29]. In addition, hydrazine seems to be a hepatotoxic and carcinogenic agent in the kidney, and liver damage can result in blood abnormalities, irreversible deterioration of the nervous system, and even DNA damage [30]. In this context, many studies used the green chemistry approach for the reduction of GO to overcome the toxicity problem using various biological molecules as reducing agents such as vitamin C [31], melatonin [32], sugars [33], polyphenols of green tea [34, 35], bovine serum albumin [36], and biomass of bacteria [37, 38]. The biologically derived graphene nanomaterials are biocompatible, stable, and soluble. Biocompatibility is an essential factor for tissue engineering applications. Recent studies suggest that the biocompatibility of carbon-based nanomaterials depends strongly on mass, purity, ratio, and surface functional groups. A variety of biological applications depend on the functionalization of graphene. The ability of the functionalization of graphene and its derivatives brought the attention of nanomaterials in various applications including biosensors and tissue engineering. Several studies have reported the biocompatibility of graphene derivatives in proximity of mammalian cells. Biris et al.