Hydrogenation of CO2 to formate using nanopolyoxomolybdate supported onto dendritic fibrous nanosilica

The creation of green heterogeneous nanocatalysts with chemical modifications to convert CO2 into value-added products has many supporters. Here, we report a green and cost-effective CO2 reduction method for the synthesis of formate salts in the participation of nanosized polyoxomolybdate caprate [Mo368] supported by cellulose inter-dendritic fibrous nanosilica (DFNS). To generate the nanocatalyst as a substrate to support [Mo368], cellulose was utilized to control the metal leaching during the reaction. The products were conveniently isolated from the catalyst, and the green medium was deployed several times without a notable decrease in selectivity and function. The results of Raman spectral data, UV-vis, FT-IR, FESEM, TEM, XRD, and TGA confirmed that Mo (VI) peroxo complex collaborated in hydrogenation of CO2. To prepare the catalyst, the surface of DFNS was activated with cellulose to act as a substrate to support [Mo368] nanoparticles. The anatomy of the final complex changed the catalytic properties of the cellulose catalyst for the production of the final product.

Automated summary

A green and cost-effective method for reducing CO2 to synthesize formate salts using nanosized polyoxomolybdate caprate [Mo368] supported by cellulose inter-dendritic fibrous nanosilica (DFNS) was reported. The cellulose acted as a substrate to control metal leaching and the products were easily isolated from the catalyst. The experimental results confirmed the role of sodium polyoxomolybdate in the hydrogenation of CO2.