In situ modification of cobalt on MXene/TiO2 as composite photocatalyst for efficient nitrogen fixation

Recent advances in photocatalytic nitrogen fixation: from active sites to ammonia quantification methods

“…Taking Gao et al 's report in 2021 as an example, after comparing the adsorption energies of different materials for nitrogen and ammonia, they first proposed the influence of the adsorption energy of catalytic product NH 3 on the nitrogen fixation performance of the catalyst. 42 In this report, they tried to improve the catalytic performance by improving the desorption of the product.…”

Recent Advances in Oxidation Stable Chemistry of 2D MXenes

“…[177] Gao et al, investigated TiO 2 /Ti 3 C 2 heterojunction photocatalysts with Co modified by a two-step calcination method for photocatalytic nitrogen fixation. [178] Co modification might change the chemisorption equilibrium of the catalyst for reactant (N 2 ) and product (NH 3 ), enhancing product desorption on the catalyst and increasing the active site efficiency, and resulting in a remarkable yield of ammonia in clean water. [178] Fabricating defect states that may affect the physicochemical characteristics like charge transport and optical property is another viable method for increasing MXene activity.…”

“…[178] Co modification might change the chemisorption equilibrium of the catalyst for reactant (N 2 ) and product (NH 3 ), enhancing product desorption on the catalyst and increasing the active site efficiency, and resulting in a remarkable yield of ammonia in clean water. [178] Fabricating defect states that may affect the physicochemical characteristics like charge transport and optical property is another viable method for increasing MXene activity. [177] For example, Miao et al fabricated oxygen vacancy (OVs) modified TiO 2 /Ti 3 C 2 composites by using a hydrothermal oxidation method and heat treatment.…”

“…[ 178 ] Co modification might change the chemisorption equilibrium of the catalyst for reactant (N 2 ) and product (NH 3 ), enhancing product desorption on the catalyst and increasing the active site efficiency, and resulting in a remarkable yield of ammonia in clean water. [ 178 ]…”

Tuning the exposure of BiVO4-{010} facets to enhance the N2 photofixation performance

“…Photocatalytic N 2 xation, which employs solar energy and water to produce ammonium, is a promising sustainable and green strategy for NH 3 synthesis compared with the traditional Haber-Bosch process. [4][5][6][7][8][9] However, the photocatalytic performance of N 2 xation is far from satisfactory due to the inefficient separation of photogenerated carriers, the high activation energy barriers and hard cleavage of the strong N^N triple bond energy (941 kJ mol À1 ) of the N 2 molecule. 10 Crystal facet engineering of semiconductors is a signicant strategy for ne-tuning the charge separation of photocatalysts.…”