In-situ construction of WS2/ZIF-8 composites with an electron-rich interface for enhancing nitrogen photofixation

Construction of Fe(III) Active Sites on Phenanthroline-Grafted g-C3N4: Reduced Work Function and Enhanced Intramolecular Charge Transfer for Efficient N2 Photofixation

“…Figure S15 displays the pore size distribution curves and N 2 adsorption–desorption isotherms for the CN and X -P-CN ( X = 0.5, 1, 4, 8, and 16) series of samples. The test results revealed that all the samples showed type IV isotherms with H3-type hysteresis loops, which indicates the existence of mesopores in the structure of the samples . The BET-specific surface area ( S BET ) of the pristine CN is small, only 7.42 m 2 g –1 , and with the introduction of 1,10-phenanthroline (0.5, 1, and 4), the S BET of X -P-CN gradually increases, with the S BET of 4-P-CN reaching 27.48 m 2 g –1 , which is 3.7 times the pristine CN surface area.…”

“…The test results revealed that all the samples showed type IV isotherms with H3-type hysteresis loops, which indicates the existence of mesopores in the structure of the samples. 37 The BET-specific surface area (S BET ) of the pristine CN is small, only 7.42 m 2 g −1 , and with the introduction of 1,10-phenanthroline (0.5, 1, and 4), the S BET of X-P-CN gradually increases, with the S BET of 4-P-CN reaching 27.48 m 2 g −1 , which is 3.7 times the pristine CN surface area. However, further increases in 1,10phenanthroline content (8 and 16) resulted in a significant decrease in the S BET and pore volume of X-P-CN, probably because the introduction of too much 1,10-phenanthroline disrupted the internal stabilization structure of CN (Table S4).…”

Flatland materials for photochemical and electrochemical nitrogen fixation applications: from lab-door experiments to large-scale applicability

“…Hydrothermally-derived optimized Mn-doped MoS 2 depicted an NH 3 yield as high as ∼213 μmol g cat −1 h −1 without using any sacrificial electron donor species, which was found to be nearly 5-fold higher than that for the bare MoS 2 photocatalyst. Recently, Yao et al 102 constructed a TMDs/metal organic framework (MOF) heterostructured photocatalyst composed of WS 2 /ZIF-8 to examine its photochemical NRR activity using tap water in real/simulated solar energy. The optimized photocatalyst revealed an NH 3 production rate as high as ∼191.6 μmol g cat −1 h −1 , as can be seen in Fig.…”

Improving Charge Carrier Separation through S-Scheme-Based 2D–2D WS2/Sulfur-Doped g-C3N4 Heterojunctions for a Superior Photocatalytic O2 Reduction Reaction

“…The S-scheme heterojunction can be developed between SCN and another semiconducting material with matched band alignment to heighten the photocatalytic H 2 O 2 generation. Recently, two-dimensional transition metal dichalcogenides (2D-TMDs) have attained extreme consideration owing to their extraordinary properties (the optoelectronic characteristics, high photon-capturing abilities, sturdy S–M–S covalent bonding, and the existence of weak van der Waals force in between each layering). , Therefore, investigation on utilizing 2D-TMDs to develop an S-scheme heterostructure, particularly focusing on WS 2 , has been explored because of its tunable band structure, excellent photon-absorbing abilities, biocompatibility, and easy synthesis . Additionally, the formation of S-scheme charge transfer between 2D–2D semiconductors will result in excellent photocatalytic activities.…”