Sustainable oxidation catalysis supported by light: Fe-poly (heptazine imide) as a heterogeneous single-atom photocatalyst

Considering single-atom catalysts as photocatalysts from synthesis to application

“…For instance, da Silva et al. mixed Na-PHI and FeCl 3 together to introduce Fe 3+ into the poly(heptazine imides) (PHI) matrix, thereby obtaining the target catalyst Fe-PHI ( Figure 10 A) ( da Silva et al., 2022 ). In Figure 10 B, the Fe-PHI XRD peaks were mainly significant differences between 25° and 30°.…”

“…(H) Conversion and selectivity of ethylbenzene for different batches of Fe-PHI (0.1%) SAP. Reproduced with permission from Ref ( da Silva et al., 2022 ). Copyright 2022, Elsevier.…”

Photocharging of Semiconductor Materials: Database, Quantitative Data Analysis, and Application in Organic Synthesis

“…[40] Using X-ray absorption spectroscopy data, da Silva et al found that in Fe-PHI, metal cations are in the pores between the layers coordinated by 4 nitrogen atoms-two from each neighboring layer. [41] The structure of cyanamide-functionalized heptazine-based polymer (NCN-CNx, Figure 3c) is represented by zigzag-like strands of heptazine units. [13,34] The strands are arranged into 2D layers via hydrogen bonding (not shown in Figure 3c), similar to melon-type graphitic carbon nitride followed by packing into 3D structured via van der Waals forces.…”

Improving hydrogen production for carbon-nitride-based materials: crystallinity, cyanimide groups and alkali metals in solution working synergistically

“…5 Although polymeric carbon nitride (PCN) stands out as the most investigated carbon nitride-based material in the hydrogen evolution reaction (HER), pristine PCN displays a poor activity even in the presence of scavengers. [6][7][8][9][10][11][12] However, the recently developed carbon nitride materials synthesized in the presence of an inorganic salt, such as NaCl, 13 KCl and LiCl, give highly crystalline photocatalysts with enhanced efficiency in the HER. [14][15][16][17][18][19][20] As illustrated in Fig.…”