Mo(S,O)/(Ce,Mo)(S,O) sulfo-oxide with heterovalent metal states for efficient visible-light-driven hydrogen evolution and pollutant reduction via in-situ generated protons

Initiating highly efficient (Bi,Ce)2(O,S)3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

“…Recently, such defects have been identied as active sites for improving the catalyst's photocatalytic activity. [17][18][19] Oxygen vacancies (V O ) in the photocatalyst have enhanced the redox reaction activity such as hydrogen generation by H 2 O splitting. 20,21 Jin et al 22 selected an argon plasma technology to control the generation of surface V O on three-dimensional nanoporous BiVO 4 .…”

“…Recently, such defects have been identified as active sites for improving the catalyst's photocatalytic activity. 17–19…”

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

“…It is evident that the BiVOS-2 electrode can keep a high current density of 150 mA cm −2 for over 24 h and can still work at an even higher current density of 350 mA cm −2 for 24 h, which illustrates that the BiVOS-2 catalyst can operate with appreciable long-term stability even at high current density. All those stability data show that our BiVOS sulfo-oxide catalyst, by hybridizing O 2p with S 3p orbitals to stabilize S in the S 2− state, can avoid the severe problem of photo-corrosion 18,83,84 and is a suitable and reusable catalyst for N 2 fixation.…”

“…It is evident that the BiVOS-2 electrode can keep a high current density of 150 mA cm −2 for over 24 h and can still work at an even higher current density of 350 mA cm −2 for 24 h, which illustrates that the BiVOS-2 catalyst can operate with appreciable long-term stability even at high current density. All those stability data show that our BiVOS sulfo-oxide catalyst, by hybridizing O 2p with S 3p orbitals to stabilize S in the S 2− state, can avoid the severe problem of photo-corrosion 18,83,84 and is a suitable and reusable catalyst for N 2 xation. To gain insights into the role of S 2− anions incorporated into BiVO 4 in the superior photocatalytic N 2 xation, we employed DFT calculations to determine the N 2 bond length (L b ), adsorption energy (E ads ) of adsorbed N 2 , and electron transfer (E t ) for BiVO 4 , BiVOS without Vo defects (perfect-BiVOS), and BiVOS with Vo defects (Vo-BiVOS) on the (0 0 2) facet.…”

Sulfur Substitution and Defect Engineering in an Unfavored MnMoO4 Catalyst for Efficient Hydrogen Evolution under Visible Light

“…Solar energy is a renewable and clean energy source that has gained attention as an alternative to fossil fuels. , Researchers have been exploring ways to efficiently use solar energy for photocatalytic hydrogen evolution. − The activation of solar-to-hydrogen conversion with high efficiency requires appropriate defects in the photocatalyst. − Defects with trapped defect energy levels are capable of improving semiconductor light absorption. Point defects, such as sulfur vacancy, nitrogen vacancy, and V O , are simple 0D crystal defects that have been extensively studied in the field of photocatalysis. − V O can be generated in various metal oxides, including TiO 2 , ZnO, and WO 3 , − for photocatalytic water decomposition.…”