Nitrogen-rich carbon nitrogen polymers for enhancing the sorption of uranyl

Nitrogen‐rich graphitic carbon nitride (g‐C3N5): Emerging low‐bandgap materials for photocatalysis

“…These ions would come from industrial practices, accumulate, and be absorbed by organisms to cause severe problems. [102] In a few studies, g-C 3 N 5 and its derivatives were OH. Reproduced with permission: Copyright 2023, Wiley-VCH.…”

“…These ions would come from industrial practices, accumulate, and be absorbed by organisms to cause severe problems. [ 102 ] In a few studies, g‐C 3 N 5 and its derivatives were mainly used to eliminate these ions, as demonstrated in Table 3. Chu and colleagues fabricated flower‐like structures of Bi 4 O 5 I 2 coupled with g‐C 3 N 5 , as shown in Figure 28, for eliminating gaseous Hg based on Z‐scheme mechanisms with 92.6% of removal efficiency.…”

Adsorption-photoreduction behaviors and mechanisms of layered double hydroxide loaded on uranium(vi) removal

“…At a pH of 2.0–6.0 (stage I), U( vi ) presented as positive species of UO 2 2+ , UO 2 OH + , (UO 2 ) 2 (OH) 2 2+ , (UO 2 ) 3 (OH) 5 + and (UO 2 ) 4 (OH) 7 + . 33 There was a large number of protonated hydroxyl groups (–OH 2 + ) on the outer surface of LDHs, so there were positive zeta potential values (pH pzc ) in a wide solution pH range. The pH pzc values of NiAl and ZnNiAl were ∼8.36 and ∼9.18, respectively (Fig.…”

Engineered g-C3N5-Based Nanomaterials for Photocatalytic Energy Conversion and Environmental Remediation

“…The resultant h + , ·O 2 − , 1 O 2 , and ·OH may oxidize organic pollutants to form CO 2 and H 2 O, while electrons can photo-reduce pollutants from high valence to low valence. For example, Cr (VI) and U (VI) can be reduced to Cr (IV) and U (IV), respectively [ 44 , 45 , 62 , 73 ]. Meanwhile, the h + can also oxidize Hg 0 to Hg 2+ [ 43 ].…”