Tailoring Non‐Covalent Interaction Via Single Atom to Boost Interfacial Charge Transfer Toward Photoelectrochemical Water Oxidation

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Photoelectrochemical (PEC) water splitting for hydrogen generation holds immense potential addressing environmental and energy crises. Tailoring non‐covalent interaction via a single atom is anticipated to realize prominent hole extracting facilitating PEC performance, but it has never been reported. In this study, Co‐N 4 coordinated with 5‐fluoroanthranilic acid (FAA) molecules, then used as hole‐extracting layer on BiVO substrate. Experiments including X‐ray absorption fine spectra, Kelvin probe force microscopy, transient absorption, theoretical calculation demonstrate the FAA coordination alters local configuration of central Co atom, adjusting interfacial interaction, thereby reducing barrier charge transfer between layer. Consequently, photogenerated carriers are more effectively separated, oxidation performance significantly enhanced photocurrent density 5.47 mA cm −2 at 1.23 V versus RHE, much higher than those previously reported photoanodes composited porphyrin‐based compounds. simulation confirm that boosted originates from exceptional rather surface catalysis dynamic. This study provides an efficient strategy tailoring by regulating single‐atom promoting extract boost activity.

Language: Английский

---

An optimized heterointerface of BiVO₄/C₃N₄ by Co single atom and F-doping for boosting photoelectrochemical water splitting

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(8), P. 4635 - 4642

Published: Jan. 1, 2024

A new strategy for boosting photocatalytic activity by optimizing the band structure of a heterojunction is proposed, and photoanode achieves current density 5.89 mA cm −2 at 1.23 V RHE .

Language: Английский

---

Nonstoichiometric In–S group yielding efficient carrier transfer pathway in In₂S₃ photoanode for solar water oxidation

SusMat, Journal Year: 2024, Volume and Issue: 4(1), P. 154 - 165

Published: Feb. 1, 2024

Abstract The construction of high‐efficiency photoanodes is essential for developing outstanding photoelectrochemical (PEC) water splitting cells. Furthermore, insufficient carrier transport capabilities and sluggish surface oxidation kinetics limit its application. Using a solvothermal annealing strategy, we prepared nonstoichiometric In–S (NS) group on the an In 2 S 3 photoanode in situ unexpectedly formed type II transfer path carrier, thereby reducing interfacial recombination promoting bulk separation. First‐principles calculations comprehensive characterizations demonstrated NS as excellent oxygen evolution cocatalyst (OEC) that effectively facilitated transport, lowered overpotential, increased active site, accelerated reaction by precisely altering rate‐determining steps * to *OH *O *OOH. These synergistic effects remarkably enhanced PEC performance, with high photocurrent density 5.02 mA cm −2 at 1.23 V versus reversible hydrogen electrode negative shift onset potential 310 mV. This work provides new strategy preparation OECs ideas constructing channels.

Language: Английский

---

Architecture of a Long-Wavelength Visible–Light–Driven N-Doped WO₃/BiVO₄ Heterojunction Structure for Highly Efficient Photoelectrochemical Water Splitting

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(30), P. 13180 - 13188

Published: July 22, 2024

Language: Английский

---

Decreased energy barrier and improved interfacial kinetics for efficient photoelectrochemical water splitting using La-engineered LDHs coupled with BiVO₄

Inorganic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A hydrothermal method was used to load Co 2 Fe x La 1− -LDHs on surface of BiVO 4 photoanode as a co-catalyst. The can generate more oxygen vacancies, enhance the energy barrier rate-determining step and improve kinetics process.

Language: Английский

---

Both Hole Transfer and Cocatalysis Exhibited by Organometallic Complexes for Enhancing Water-Splitting Performance of the Photoreducing BiVO₄ Photoanode

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Language: Английский

---

High-efficiency oxygen evolution on γ-Fe2O3 catalysts with BiVO4 photoabsorbers and TpAQ hole transport layers for photoelectrochemical water splitting

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 689, P. 137213 - 137213

Published: March 2, 2025

Language: Английский

---

Tailoring p‐Orbital Electron Delocalization Induced by Sulfur Defect Engineering for Enhancing Photoelectrochemical Water Splitting Performance

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract Indium sulfide (In 2 S 3 ) as water splitting photocatalyst has been broadly investigated due to its narrow bandgap (2.0–2.3 eV) and optimized opto‐electronic properties. However, In still suffers from a rapid photogenerated charge carrier recombination rate. addition, the main group metals (such In) lack active d ‐orbital electrons for catalysis, thus limits activation of intermediates during catalytic reaction. Herein, overcome above limitations , /TiO heterojunction with sulfur defects are constructed by temperature control strategy. The vacancy (Sv) can induce electron density transformation 5 p localized states delocalized states, which efficiently enhances chemical affinity * OOH. Thus, interaction between O atoms greatly facilitates rate‐determining step ( OOH → +O ), realizing high yield rate 10.00 µmol cm −2 h −1 at 1.23 V versus RHE. Furthermore, heterogeneous structure also enhance interfacial electric field (IEF) stability promoting oxygen generation. This work provides an efficient pathway improve photoelectrochemical (PEC) activity manipulating delocalization through defect engineering.

Language: Английский

---

Collaborative control of charge transfer and ultrafast transient behavior through coupling and interfacial engineering in MXene/TMDs heterostructures realize effective photoelectrochemical

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236826 - 236826

Published: March 26, 2025

Language: Английский

---

Recent progress on molecular catalysts integrated photoelectrochemical systems for water oxidation

Materials Today Catalysis, Journal Year: 2024, Volume and Issue: 4, P. 100042 - 100042

Published: Feb. 9, 2024

The major limitations of photoelectrochemical (PEC) water splitting lies in the currently unsatisfying efficiency and stability semiconductor materials-based systems. By addressing these limitations, immobilization molecular catalysts on photoanodes to establish a hybrid inorganic-organic PEC system has attracted an increasing research attention. It is crucial choose suitable catalyst effectively couple it into photoelectrode system. In this review, focusing oxidation process, integrated systems are highlighted from perspective roles integration strategies most recent advances summarized with various case studies presented, based which perspectives proposed provide guidance toward rational design for future development.

Language: Английский

---