A facile green synthesis of reduced graphene oxide by using pollen grains of Peltophorum pterocarpum and study of its electrochemical behavior

Abstract

Reduced graphene oxide (RGO) was prepared from graphite oxide (GO) by using pollen grains (Pgs) of Peltophorum pterocarpum as a reducing agent, and was then studied for its electrochemical behavior.The RGOs were also prepared without and with hydrazine hydrate as the reducing agent for comparison.All the RGOs were studied by X-ray diffraction, and by Raman and FTIR spectroscopies. The microstructure was studied by scanning and transmission electron microscopies, and the phase formation was further confirmed by electron energy loss spectroscopy. Reduction by the Pgs was comparable to that by hydrazine hydrate. Cyclic voltammetry studies showed the good electrochemical performance of RGO with a maximum specific capacitance of 27.1 F g À1 (at a scan rate of 5 mV s À1 ). This synthesis method is reported to be a green method, due to the non-hazardous nature of Pgs to the environment and cost effective.

Antibacterial Activities of Aliphatic Polyester Nanocomposites with Silver Nanoparticles and/or Graphene Oxide Sheets

“…The disadvantage of this chemical reduction strategy is the use of highly toxic hydrazine and sodium borohydride. In this regard, some attempts have been made by the researchers to reduce GO with eco-friendly extracts from biological plants [110,111]. Alternatively, thermal reduction route can be used to convert GO to thermally reduced graphene (TRG) through rapid heating at 1050 °C under an inert gas atmosphere [112].…”

Realization of Efficient Field Emitter Based on Reduced Graphene Oxide‐Bi2S3 Heterostructures

“…The X‐ray diffraction (XRD) pattern of the as‐synthesized rGO powder sample, shown in Figure a, shows a broad peak at 24.5° and a small hump at 43.5°, corresponding to the (002) and (100) planes of rGO, respectively . The XRD patterns of the rGO‐Bi 2 S 3 heterostructure and pristine Bi 2 S 3 are shown in Figure b,c, respectively.…”

“…The X-ray diffraction (XRD) pattern of the as-synthesized rGO powder sample, shown in Figure 1a, shows a broad peak at 24.5 and a small hump at 43.5 , corresponding to the (002) and (100) planes of rGO, respectively. [44] The XRD patterns of the rGO-Bi 2 S 3 heterostructure and pristine Bi 2 S 3 are shown in Figure 1b,c, respectively. The appearance of the set of well-defined diffraction peaks in Figure 1b,c clearly confirms the crystalline nature of the as-synthesized product.…”

Green Reduction of Graphene Oxide Involving Extracts of Plants from Different Taxonomy Groups and Its Applications

“…Another study by a similar group demonstrated that rGO synthesis from tobacco solution at a temperature of 100 °C outperforms rGO synthesis at room temperature as supercapacitor electrode materials [38]. Green synthesis rGO prepared from Peltophorum pterocarpum pollen grains demonstrated excellent electrochemical properties with a maximum specific capacitance of 27.1 F g -1 , which has the potential to be used to fabricate bilayer capacitors [109]. The electrochemical properties of Aloe vera (L.) Burm.…”