Surface-layer bromine doping enhanced generation of surface oxygen vacancies in bismuth molybdate for efficient photocatalytic nitrogen fixation

Boosting Photocatalytic Nitrogen Fixation via In Situ Constructing Bi Metal Active Sites over BiOBr/BiOI Heterojunction

“…The two absorption peaks located at 2920 and 1410 cm −1 belong to the absorption peaks of NH 4 + . [ 37–39 ] The intensity of peaks increases gradually with the extension of irradiation time, proving that ammonia is gradually produced. Therefore, the loading of BiOI and the in situ reduction of Bi metal can synergistically promote the adsorption and activation of N 2 , and the ternary BiOBr/BiOI/Bi composite catalyst has high performance of photocatalytic nitrogen fixation.…”

Cocatalyst engineering to weaken the charge screening effect over Au–Bi4Ti3O12 for piezocatalytic pure water splitting

“…6A and C, the Fermi edges ( E Fm ) of BTO and Au–BTO are 2.10 eV and 1.91 eV, and their secondary electron cutoff edges ( E c ) are 17.41 eV and 17.38 eV, respectively. According to E VB = −( hν − E c + E Fm ), 50 the E VB of BTO and Au–BTO is calculated to be −5.91 eV and −5.75 eV ( vs. vacuum level), respectively. The E VB ( vs. SHE) can be further figured out to be 1.47 eV and 1.31 eV, respectively, since 0 eV ( vs. SHE) corresponds to −4.44 eV ( vs. vacuum level).…”

Structural design and control of photocatalytic nitrogen-fixing catalysts

“…The doping of heteroatoms in the material is conducive to importing lots of O v s, thus further improving the adsorption of N 2 . 33 Wang et al 76 made plenty of oxygen vacancies through the doping of Br in the surface layer, which showed better nitrogen fixation performance as compared with pure Bi 2 MoO 6 . This work mainly studied the mechanism of introducing oxygen vacancies by doping elements.…”