Highly Efficient and Selective Carbon-Doped BN Photocatalyst Derived from a Homogeneous Precursor Reconfiguration

Abstract

The modification of inert boron nitride by carbon doping to make it an efficient photocatalyst has been considered as a promising strategy. Herein, a highly efficient porous BCN (p-BCN) photocatalyst was synthesized via precursor reconfiguration based on the recrystallization of a new homogeneous solution containing melamine diborate and glucose. Two crystal types of the p-BCN were obtained by regulating the recrystallization conditions of the homogeneous solution, which showed high photocatalytic activities and a completely different CO2 reduction selectivity. The CO generation rate and selectivity of the p-BCN-1 were 63.1 μmol·g−1·h−1 and 54.33%; the corresponding values of the p-BCN-2 were 42.6 μmol·g−1·h−1 and 80.86%. The photocatalytic activity of the p-BCN was significantly higher than those of equivalent materials or other noble metals-loaded nanohybrids reported in the literature. It was found that the differences in the interaction sites between the hydroxyl groups in the boric acid and the homolateral hydroxyl groups in the glucose were directly correlated with the structures and properties of the p-BCN photocatalyst. We expect that the developed approach is general and could be extended to incorporate various other raw materials containing hydroxyl groups into the melamine diborate solution and could modulate precursors to obtain porous BN-based materials with excellent performance.

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

“…The obtained values were depicted in Figure 5a –e. The enhanced light absorption properties could be attributed to the grey/black colour of MBN and enhanced charge transfer attained due to the change in the electronic structure through the formation of C–N moieties in the BN framework [ 16 ].…”

“…This demonstrates the potential of HBN to be used as a photocatalytic material. However the studies in the sense of exploring its photocatalytic ablity intented for environmental applications is very limited [15][16][17]. This has motivated us to extend our study on the specified subject.…”

Efficient and Selective Hydrogenolysis of 5‐Hydroxymethylfurfural to 2,5‐Dimethylfuran by a Bimetallic Copper‐Palladium Catalyst on a Carbon‐Doped Boron Nitride Support

“…reported that carbon doped BN has excellent photocatalytic properties and high selectivity for CO 2 conversion. Also, the structure and properties of C‐doped BN have been changed [20] . Liu et al.…”

“…It has been shown that the doping of heteroatoms in h‐BN materials can achieve the tuning of its structure and properties [19–20] . Lu et al.…”

“…Also, there was a strong interaction between the support BN and Co. [18] It has been shown that the doping of heteroatoms in h-BN materials can achieve the tuning of its structure and properties. [19][20] Lu et al reported that carbon doped BN has excellent photocatalytic properties and high selectivity for CO 2 conversion. Also, the structure and properties of C-doped BN have been changed.…”