Influence of the reduction strategy in the synthesis of reduced graphene oxide

A highly responsive methanol sensor based on graphene oxide/polyindole composites

“…Although these reducing agents provide very powerful reduction ability, they are highly toxic. 23 Recently, green reducing reagents such as sugars, amino acids, plat extracts, and, especially, ascorbic acid or vitamin C have emerged as interesting alternative reducing agents because of their non-toxicity, powerful reduction ability, low cost, production of more stable rGO, and lack of heteroatom creation. 14,24,25 Thermal reduction is classied in two methods, (i) thermal annealing and (ii) microwave and photo reduction; thermal annealing provides a higher degree of reduction and lower cost.…”

“…14,24,25 Thermal reduction is classied in two methods, (i) thermal annealing and (ii) microwave and photo reduction; thermal annealing provides a higher degree of reduction and lower cost. 14,23 Gas sensing materials fabricated from graphene-based materials exhibit good sensing properties. They show high surface areas and provide low limits of detection; facilitate gas interaction owing to the oxygen species functionalized on their structures, which promote energy and gas adsorption; 26 and can achieve high sensitivity and selectivity by hybridization or compositing with other materials.…”

Optimization of the catalytic support and membrane for the electrochemical reforming of ethanol in alkaline media

“…Palladium‐based anodic catalysts, denoted as Pd/X (where X refers to the different carbonaceous supports), were synthetized according to the sodium borohydride (NaBH 4 ) reduction method . Firstly 1600 mg of the selected support (functionalized low‐surface nanofibers (CNF f‐LS) or graphene flakes (GF), which were synthetized in our laboratory, or non‐functionalized low‐density nanofibers (CNF LS), commercially supplied by (Graphenano SL, Murcia, Spain) was dissolved in 200 mL of deionized water and stirred for 6 h. Then a PdN 2 O 7 · x H 2 O (1102.53 mg in 22.05 mL of deionized water) solution was added to the support‐suspended solution and kept under vigorous stirring for 12 h. The solvent was subsequently evaporated from the slurry sample on a Rotavapor R‐210 (Buchi, Flawil, Switzerland) at 60 °C. The resulting product was dried in an oven (Nabertherm) at 80 °C for 12 h. Finally a 0.2 mol L −1 solution of NaBH 4 was added dropwise to the solid sample (NaBH 4 /precursor molar ratio of 10) to reduce the metal ions to the active phase.…”

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

“…In this sense, graphene-based nanomaterials have been widely used in several fields of the knowledge. One of these stages is the reduction of GO; reduced graphene oxides (r-GO) ( Figure 1e) can be obtained by thermal reduction, through heating GO samples to temperatures varying from 250ºC (Lavin-Lopez et al, 2017) to above 800ºC (McAllister et al, 2007). Besides, a chemical reduction of GO can be achieved by adding reducing agents, whose choice depends mainly on avoiding parallel reactions, the cost of synthesis and also the aggressiveness of these compounds to the environment (De .…”