Synthesis And Electrocatalysis Of Ordered Mesoporous Carbon Composite Materials

Carbon nanomaterials such as carbon nanotube (CNT), carbon nanofiber (CNF), graphene and mesoporous carbon (MC) have attracted considerable attention in both the research and industrial fields, due to their novel unique electronic, chemical inertness, thermal and mechanical properties. However, the ordered mesoporous carbon (OMC) which was first synthesized in 1999, due to their high surface area, well defined pore size, and easily host-guest chemistry, are drawing significant perspectives in a number of potential applications, especially in heterogeneous catalysis. OMC can appear to be more attractive as catalytic materials than other carbon nano-materials. So we have discussed the synthesis and electrocatalytic performance of OMC-based composite materials. This article mainly consists of two aspects:(1) A novel composite film which contains ordered mesoporous carbon (OMC) along with the incorporation of poly (neutral red) (PNR) has been synthesized on glassy carbon electrode by potentionstatic method. This composite film was characterized by scanning electron microscope (SEM) and cyclic voltammetry (CV). The influence of redox peak of the PNR/OMC/GCE on the scan rates and pH were also investigated. Two pairs of the redox peaks appear at formal potential E0/ = +0.045 V (peak I) and E0/ = -0.49 V (peak II) at the PNR/OMC/GCE. And it is found that only the redox waves (peak I) exhibits good electrocatalytic activity towards L-cysteine (L-CySH), nicotinamide adenine dinucleotide (NADH) and 2-mercaptoethanol (2-ME). Amperometry method was used to determine the concentration of L-CySH, NADH and 2-ME, respectively. In pH 7.0, sensors for different biomolecules under their corresponding optimized conditions, were developed with acceptable sensitivity and low detection limits in large determination ranges. In addition, these sensors have good reproducibility and stability.(2) A simple hydrothermal method for the synthesis of Nickel Hydroxide/Ordered Mesoporous Carbon nanocomposite is reported. The Ni(OH)2/OMC nanocomposite was characterized by X-ray diffraction (XRD), X-ray photoelectronspectroscopy (XPS), Nitrogen adsorption–desorption and Fourier transform infrared spectroscopy (FT-IR). The results confirms that the synthesize isβ- Ni(OH)2. The cyclic voltammetry and amperometry were employed to investigate the electrochemical properties of the nanocomposite. Compared with the pristine OMC modified electrode, the new material modified electrode displays well electrocatalytic activity towards glycine which make Ni(OH)2/OMC electrode a promising candidate sensor for glycine detection. On the other hand, the well catalytic to methanol and ethonal have attracted considerable attention in both the research and industrial fields.