Facile synthesis of graphene-tin oxide nanocomposite derived from agricultural waste for enhanced antibacterial activity against Pseudomonas aeruginosa

Abstract

Antibacterial screening of graphene-tin oxide nanocomposites synthesized from carbonized wood and coconut shell is investigated against Pseudomonas aeruginosa for the first time. Efficient and facile one step hydrothermal process adopted in the present work for the synthesis of graphene-tin oxide nanoparticles provides an ideal method for the economic large-scale production of the same. Graphene-tin oxide nanocomposites derived from wood charcoal possess a spherical morphology whereas rod like structures are seen in the case of coconut shell derivatives. An excitation independent fluorescence response is observed in graphene-tin oxide nanohybrids while graphene oxide nanostructures exhibited an excitation dependent behavior. These hydrophilic nanostructures are highly stable and exhibited no sign of luminescence quenching or particle aggregation even after a storage of 30 months. Bactericidal effects of the nanostructures obtained from coconut shell is found to be relatively higher compared to those procured from wood. This variation in antibacterial performance of the samples is directly related to their morphological difference which in turn is heavily influenced by the precursor material used. MIC assay revealed that coconut shell derived graphene-tin oxide composite is able to inhibit the bacterial growth at a lower concentration (250 μg/mL) than the other nanostructures. Nanocomposites synthesized from agro-waste displayed significantly higher antimicrobial activity compared to the precursor and graphene oxide nanostructures thereby making them excellent candidates for various bactericidal applications such as disinfectants, sanitary agents etc.

Biomass‐Derived Graphene‐Based Nanocomposites: A Futuristic Material for Biomedical Applications

“…The prepared material can be used as an excellent candidate for bactericidal applications. [85] The bactericidal property of graphene makes it an ideal candidate to be used in tissue engineering applications.…”

“…The prepared nanohybrid structures were tested against the gram‐negative bacteria Pseudomonas aeruginosa and found that the nanocomposite prepared from the coconut shell shows more antibacterial activity than the graphene tin oxide prepared from the wood charcoal. The prepared material can be used as an excellent candidate for bactericidal applications [85] . The bactericidal property of graphene makes it an ideal candidate to be used in tissue engineering applications.…”

Synthesis and applications of graphene and graphene-based nanocomposites: Conventional to artificial intelligence approaches

“…Graphene has been reported to possess significant antimicrobial properties, making it a suitable candidate for the development of new anti-fungal and anti-bacterial chemicals (Wang et al, 2014;Mohan and Panicker, 2019). These microbes are responsible for causing some severe disease infections in plant species resulting in significant yield losses (Mansfield et al, 2012).…”

“…Some articles discuss only the conventional methods of synthesis (Gorga and Cohen, 2004;Yuan et al, 2009;Rourke et al, 2011;Goenka et al, 2014;Jayasena and Melkote, 2015;Jaleh et al, 2017). Moreover, some articles mentioned the applications of GNCs in the fields of the environment sector (Hao et al, 2012;Cao and Li, 2014;Latha et al, 2016;Luo and Yang, 2017), energy sector (Choi et al, 2010;Kamat, 2010;Dimakis et al, 2015), and agricultural sector (Gomez De Arco et al, 2010;Nuvoli et al, 2011;Fan et al, 2018;Mohan and Panicker, 2019) separately. This review article, however, explored AI-based synthesizing methods and also, a combined approach toward applications in all three sectors is evaluated.…”

A review on tin dioxide gas sensor: The role of the metal oxide doping, nanoparticles, and operating temperatures

“…Tin (IV) Oxide (SnO2) is an n-type transparent semiconductor with a wide bandgap of 3.6 eV at 300 K [12,13]. SnO2 is used in a wide variety of applications, including photovoltaic devices [14][15][16][17][18], biological applications [19][20][21][22][23], solar cells [24][25][26][27][28], electrochemical applications [29][30][31], and gas sensors [32][33][34][35][36][37]. Due to its high sensitivity to reducing and oxidizing gases such as CO, H2, and NO, tin oxide is commonly employed in gas sensor applications.…”