Material design for converting an oxidative-type BiVO₄ catalyst into a reductive BiV(S,O)_4−x sulfo-oxide catalyst for nitrogen photoreduction to ammonia

Abstract

Herein, we demonstrated the S2− anion incorporated into BiVO4 for converting an oxidative-type BiVO4 photocatalyst into a reductive-type BiV(S,O)4-x sulfo-oxide photocatalyst for efficient N2 fixation under an ambient environment. The...

Photocatalytic fixation of nitrogen to ammonia with a Ce/S co-doped TiO2 catalyst: synergistic tuning of heterovalent metal states and oxygen vacancy defects

“…Step II: active Vo can not only capture H 2 O molecules that weaken O–H bonds to produce protons 24–26 but also adsorb and activate N 2 . 16,23 Step III: within TiCeOS-3, the Vo always emerges near Ce 3+ . 54,70,71 This linkage promotes electron transfer between Ce 3+ and Ce 4+ , effectively extends electron lifetimes, and activates O–H bonds and NN.…”

“…Takata et al 22 produced a stable oxysulfide catalyst of Ln 2 Ti 2 S 2 O 5 (Ln = Pr–Er) for water oxidation and reduction. Chen et al 23 synthesized a reducing BiVOS catalyst by adding S into an oxidizing BiVO 4 catalyst to achieve efficient nitrogen fixation in visible light.…”

Oxygen-doped Sn17Sb6S29 bimetal oxysulfide catalysts for efficient reduction of organic pollutants and hexavalent chromium in the dark

“…5j depicts the SnSbOS-3 catalyst at a constant potential of 1.0 V for 24 h. It can be seen that the current density has no significant changes, which indicates that SnSbOS-3 has super-electrochemical stability. 49–51…”

Synergism of heterovalent valence state and oxygen vacancy defect engineering in Co/S co-doped TiO2 for nitrogen photoreduction to ammonia

“…95 Finally, the active nitrogen (N 2 ) captured on the active atoms Co 3+ is desorbed from the catalyst surface by the combined action of protons (H + ) and electrons (e − ), which causes the NN bond to break completely, realizing the conversion of N 2 to NH 3 . 25,26…”

“…They promoted the electron transfer to the antibonding orbitals of N 2 molecules, which resulted in excellent nitrogen fixation efficiency of the catalyst (563.6 μmol g −1 h −1 ). 25 Moreover, they designed a Ce/S co-doped TiO 2 sulfur oxide catalyst for effective photocatalytic ammonia nitrogen fixation under visible light. 26…”