Graphene‐based catalysts for electrochemical carbon dioxide reduction

Abstract

Electrochemical carbon dioxide (CO2) reduction is considered to be an efficient strategy to produce usable fuels and overcome the concerns regarding global warming. For this purpose, an efficient, earth abundant, and a low cost catalyst has to be designed. It has been found that graphene‐based materials could be promising candidates for CO2 conversion because of their unique physical, mechanical, and electronic properties. In addition, the surface of graphene‐based materials can be modified by using different strategies, including doping, defect engineering, producing composite structures, and wrapping shapes. In this review, the fundamentals of electrochemical CO2 reduction and recent progress of graphene‐based catalysts are investigated. Furthermore, recent studies on graphene‐based materials for CO2 reduction are summarized.

Preparation and characterization of colorful graphene oxide papers and flexible N‐doping graphene papers for supercapacitor and capacitive deionization

“…AFM images of (E) GO and (F) NDG papers with the corresponding height profiles respectively. AFM, atomic force microscope; FTIR, Fourier transform infrared; GO, graphene oxide; NDG, N-doped graphene; TGA, thermogravimetric analysis; XRD, X-ray diffraction C═O (288.2 eV) bonds with a decrease in the C-C sp 3 (284.6 eV), C-C sp 2 (283.9 eV) and π-π satellite (289.8 eV) bonds ( Figure 5A). 33,50,54 The conjugated structure of graphite was destroyed by the oxidation reaction, and these carbonaceous oxide bonds enhanced the forces between the sheet layers, increasing the flexibility of the GO paper.…”

“…Graphene, an emerging ultrathin, two‐dimensional (2D) carbon material, has attracted tremendous research efforts on its prospective applications because of its outstanding thermal, mechanical, optical, and electrochemical properties 1‐6 . The Hummer's method is extensively used and modified to prepare graphene oxide (GO), 7‐9 which can be fabricated into various architectures (2D paper, 10‐12 film, 13‐15 foam, 16 membrane, 17‐19 and 3D framework 20 ) for further development and demanding applications 21‐25 .…”

Mesoporous PdAg Nanospheres for Stable Electrochemical CO2 Reduction to Formate

“…Electrochemical CO 2 reduction reaction (CO 2 RR) has been widely advocated as a promising approach to capture and convert atmospheric CO 2 to value-added chemical fuels, thereby closing the anthropogenic carbon cycle. [1][2][3][4][5][6] Its commercial viability, however, relies on the development of efficient electrocatalyst materials so as to activate the relatively stable C=O double bond in CO 2 and to facilitate the formation of C-H and C-C bonds. [7][8][9][10][11][12][13] Among various possible products, formic acid or formate is suggested by recent technoeconomic analyses to be one of the most economically profitable products.…”

Polymer–Inorganic Thermoelectric Nanomaterials: Electrical Properties, Interfacial Chemistry Engineering, and Devices

“…Graphene is also one type of preferred nanofillers due to its large surface area and aspect ratio (Hasani et al, 2020 ). Compared with SWNT, graphene is easier to prepare at lower cost, which facilitates the practicability of the final thermoelectric product (Liu et al, 2019 ).…”