English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In this work, a highly efficient wide-visible-light-driven photoanode, namely, nitrogen and sulfur co-doped tungsten trioxide (S-N-WO 3 ), was synthesized using tungstic acid (H 2 WO 4 ) as W source and ammonium sulfide ((NH 4 ) 2 S), which functioned simultaneously as a sulfur source and as a nitrogen source for the co-doping of nitrogen and sulfur. The EDS and XPS results indicated that the controllable formation of either N-doped WO 3 (N-WO 3 ) or S-N-WO 3 by changing the n W :n (NH4)2S ratio below or above 1:5. Both N and S contents increased when increasing the n W :n (NH4)2S ratio from 1:0 to 1:15 and thereafter decreased up to 1:25. The UV-visible diffuse reflectance spectra (DRS) of S-N-WO 3 exhibited a significant redshift of the absorption edge with new shoulders appearing at 470-650 nm, which became more intense as the n W :n (NH4)2S ratio increased from 1:5 and then decreased up to 1:25, with the maximum at 1:15. The values of n W :n (NH4)2S ratio dependence is consistent with the cases of the S and N contents. This suggests that S and N co-doped into the WO 3 lattice are responsible for the considerable redshift in the absorption edge, with a new shoulder appearing at 470-650 nm owing to the intrabandgap formation above the valence band (VB) edge and a dopant energy level below the conduction band (CB) of WO 3 . Therefore, benefiting from the S and N co-doping, the S-N-WO 3 photoanode generated a photoanodic current under visible light irradiation below 580 nm due to the photoelectrochemical (PEC) water oxidation, compared with pure WO 3 doing so below 470 nm.

Fabrication of an Efficient N, S Co-Doped WO3 Operated in Wide-Range of Visible-Light for Photoelectrochemical Water Oxidation