Advances in Electrode Materials

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

“…Supporting metal nanoparticles, metal oxides, or some sulfur metals (depending on the precursor) on carbon-based materials is another efficient way to obtain low-cost electrocatalysts, partly because metal nanoparticles can achieve good conversion efficiencies using lower metal loading and carbon materials support has reasonably priced. In addition, functionally they allow a good dispersion of the nanoparticles, they have good mechanicalelectrical properties, and their structural properties are tunable, thus having better control of the active sites of the catalyst [172]. For example, Au bulk catalysts have been studied for the reduction of CO 2 to CO, which are expensive and scarce, therefore the possibility of using Au in the form of nanoparticles [173] dispersed on carbon paper allows to use a smaller amount of gold to obtain comparable faradic efficiencies with respect to a commercial Au rod.…”

“…For example, Hossain and co-workers [199] and Zhang and co-workers [200] supported copper nanoparticles (3-60 nm) to obtain methanol and tin dioxide nanoparticles to obtain formate, respectively. To date, this material is still interesting due to its tubular structure and its resistance to acidic and basic environments [172,199]. Authors such as Zheng and co-workers [201], advocating the structural characteristics of these materials, studied the effect of confinement of Ni nanoparticles within carbon nanotubes for the production of CO.…”