Influence of the pH on the synthesis of reduced graphene oxide under hydrothermal conditions

Abstract

Here we describe the important role played by the pH on the morphology and structure of the reduced graphite oxide (rGO) samples obtained by hydrothermal treatment of the previously prepared GO. The nature of the resulting samples has been studied on the basis of a complete battery of experimental techniques.

A New Colorimetric Sensor for Cysteine Determination Based on Dual Reacting‐mediated Strategy

“…To achieve a satisfying result for cysteine detecting, the pH value, reaction time, Fe 3+ , and phenanthroline concentration of sensing system were optimized. 42 Therefore, the pH of our detection system is fixed at 5.8 in following experiments. 34 It is noteworthy that the pH value of the proposed colorimetric system plays a key role in the color-producing reaction involved in cysteine detecting.…”

Facile fabrication of graphene/nickel oxide composite with superior supercapacitance performance by using alcohols-reduced graphene as substrate

“…10% of the total mass. The second process occurs in the temperature range of 350-500°C, resulting from the removal of the unstable oxygen-containing function groups (carboxyl group, hydroxyl group and epoxy group) and the thermal decomposition [28]. Comparing the TGA curves of G/NiO-100, G/NiO-150 and G/NiO-200 in Fig.…”

Fabrication of few-layer molybdenum disulfide/reduced graphene oxide hybrids with enhanced lithium storage performance through a supramolecule-mediated hydrothermal route

“…4 also shows a slight shift of A 1g mode peak to 402.1 cm À1 for MoS 2 /rGO-1 and 401.7 cm À1 for MoS 2 /rGO-2 that is indicative of few-layer or de-layer MoS 2 [56]. In addition, both MoS 2 /rGO-1 and MoS 2 /rGO-2 composites display two Raman peaks at 1348.0 cm À1 and 1585.3 cm À1 that can be attributed to D band and G band of reduced graphene oxides [57]. The D band represents the dispersive, defect-induced vibrations while the G band represents the vibration of sp 2 -bond carbon atoms.…”