Selective N-formylation of amines and carbon dioxide through the utilization of Nd2Sn2O7 supported by Ar-g-C3N4 on dendritic filamentous nanotitanium

Nd2Sn2O7 NPs were synthesized by employing a straightforward synthetic method along with aromatic ring-doped g-C3N4 nanosheets loaded onto dendritic filamentous nanotitanium (DFNT/Ar-g-C3N4@Nd2Sn2O7). The inclusion of DFNT in this process was found to offer an abundance of O-H groups for the uniform charging of g-C3N4 through chemical bonding interaction. The topography and mesoporous anatomy of the DFNT/Ar-g-C3N4@Nd2Sn2O7 composite remained unchanged upon Ar-g-C3N4@Nd2Sn2O7 loading, indicating the sustained crystalline shape. This extraordinary catalyst exhibits a noteworthy capacity in facilitating the N-formylation reaction by establishing N-C bonds through the reaction between amine and carbon dioxide, all while conforming to environmentally favourable circumstances. Here, the DFNT/Ar-g-C3N4@Nd2Sn2O7 photocatalyst was synthesized utilizing a solvothermal approach for the N-formylation of N-methylaniline. The main products obtained were mono-N-formylated compounds, with favourable to excellent yields for all amines. Lastly, an explanation for the reaction between amine and carbon dioxide is put forward by conducting control experiments and verifying spectra. •The DFNT/Ar-g-C3N4@Nd2Sn2O7 was created utilizing a practical triple-stage procedure.•The nanocatalysts were applied for the N-formylation of N-methylaniline with CO2.•These nanocatalysts can be reused for ten cycles without changing characteristics.