Red Phosphorus Grafted High‐Index (116) Faceted Anatase TiO₂ for Z‐Scheme Photocatalytic Pure Water Splitting

Abstract

Red phosphorus (RP) is an emerging visible‐light‐responsive photocatalyst, yet the rapid charge recombination has limited photocatalytic hydrogen production activity. In this work, a Z‐scheme heterostructure with RP nanolayer coated on high‐index (116) faceted anatase TiO2 nanoparticles (TiO2@RP) is designed and fabricated via chemical vapor deposition. Compared with pristine TiO2 and RP, the optimized TiO2@RP Z‐scheme heterostructure exhibits a significantly boosted photocatalytic activity for pure water splitting, with hydrogen evolution rate reaching 12.9 µmol·h−1, under simulated solar light irradiation. The strong interfacial interaction and staggered band alignment between (116) faceted TiO2 and RP result in the formation of built‐in electric field, which can drive the directional charge migration from the conduction band (CB) of TiO2 to the valance band (VB) of RP under light irradiation, with photoelectrons and holes of high redox ability maintained at the CB of RP and the VB of TiO2, respectively. This well‐designed heterostructure greatly promotes photogenerated charge separation and migration via a direct Z‐scheme charge transfer pathway.

Vaporization phosphorization-mediated synthesis of phosphorus-doped TiO2 nanocomposites for combined photodynamic and photothermal therapy of renal cell carcinoma

“…This extended the light absorption boundary of the material into visible or even near-infrared wavelengths, facilitating the efficient transfer of photogenerated electrons from the oxide catalyst to oxygen. 33 Furthermore, the O 1s spectrum of P/TiO 2 exhibited distinct P–O peaks. For the phosphorus precursors, the P 2p spectrum displayed double peaks at 130.13 and 130.95 eV for the P 2p 1/2 and P 2p 3/2 spin–orbit states of the P° chemical state.…”

Carbon dot hybrid porous carbon nanofibers as efficient electrocatalysts for the oxygen reduction reaction

“…Under the same conditions, the loss of the 3%-N,P-PCNFs-900 catalyst is lower than that of the Pt/C catalyst (approximately 59.8% after 10 h), indicating that the 3%-N,P-PCNFs-900 catalyst is more stable than the Pt/C catalyst. 45–47…”

Stable Structure and Fast Ion Diffusion: A Flexible MoO2@Carbon Hollow Nanofiber Film as a Binder-Free Anode for Sodium-Ion Batteries with Superior Kinetics and Excellent Rate Capability

“…To further investigate the Na + diffusion kinetics of the MoO 2 @HCNFs and MoO 2 @CNFs, electrochemical impedance spectroscopy (EIS) and the galvanostatic intermittent titration technique (GITT) were measured. The Nyquist plots shown in Figure 6 a consist of a semicircle in the high-medium frequency region and a sloping line in the low-frequency region, with the semicircle region relating to the SEI film resistance (R e ) and charge transfer resistance (R ct ) and the sloping line corresponding to the Warburg impendence (Z w ) of ion diffusion [ 39 , 40 , 41 ]. The MoO 2 @HCNF electrode exhibited a smaller R ct than that of the MoO 2 @CNFs before cycling.…”