Advanced X-ray absorption spectroscopy for probing dynamics in CO2 reduction reaction electrocatalysts DOI Creative Commons

Beibei Sheng,

Dengfeng Cao, Shuangming Chen

et al.

Communications Materials, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 4, 2025

Language: Английский

Closing Kok’s cycle of nature’s water oxidation catalysis DOI Creative Commons
Yu Guo, Lanlan He,

Yunxuan Ding

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 16, 2024

Abstract The Mn 4 CaO 5(6) cluster in photosystem II catalyzes water splitting through the S i state cycle ( = 0–4). Molecular O 2 is formed and natural catalyst reset during final 3 → (S ) 0 transition. Only recently experimental breakthroughs have emerged for this transition but without explicit information on -state reconstitution, thus progression after release remains elusive. In report, our molecular dynamics simulations combined with density functional calculations suggest a likely missing link closing cycle, i.e., restoring first catalytic state. Specifically, formation of closed-cubane intermediates all hexa-coordinate observed, which would undergo proton release, dissociation, ligand transfer to produce open-cubane structure Thereby, we theoretically identify previously unknown structural isomerism that acts as origin proposed flexibility prevailing may be functionally important nature’s oxidation catalysis.

Language: Английский

Citations

8
Introduction: Operando and In Situ Studies in Catalysis and Electrocatalysis DOI
Beatriz Roldán Cuenya, Miguel Á. Bañares

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(13), P. 8011 - 8013

Published: July 10, 2024

Language: Английский

Citations

6
Insight into the Rate-Determining Step in Photocatalytic Z-Scheme Overall Water Splitting by Employing A Series of Perovskite RTaON2 (R = Pr, Nd, Sm, and Gd) as Model Photocatalysts DOI Creative Commons
Hai Zou, Qi Yu, Shiwen Du

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 4, 2024

Photocatalysis is an intricate process that involves a multitude of physical and chemical factors operating across diverse temporal spatial scales. Identifying the dominant influence photocatalyst performance one central challenges in field. Here, we synthesized series perovskite RTaON

Language: Английский

Citations

4
CRISPR-integrated metal-organic frameworks for biosensing applications: Recent advances and future perspective DOI Creative Commons
Babak Mikaeeli Kangarshahi,

Anahita Beigi,

Seyed Morteza Naghib

et al.

Sensing and Bio-Sensing Research, Journal Year: 2025, Volume and Issue: unknown, P. 100736 - 100736

Published: Jan. 1, 2025

Language: Английский

Citations

0
Tantalum and niobium – same row, different connectivity. A XAFS study of La2O3-Nb2O5-B2O3 and La2O3-Ta2O5-B2O3 glasses DOI
R. O. Alekseev, L. A. Avakyan,

E.A. Tret'iakov

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178622 - 178622

Published: Jan. 1, 2025

Language: Английский

Citations

0
Effect of the naphthylene linker on the J‐aggregation abilities of chlorophyll‐a derivatives DOI Creative Commons

Yuma Hisahara,

Takeo Nakano, Hitoshi Tamiaki

et al.

Photochemistry and Photobiology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Chlorophyll(Chl)‐ a derivatives inserting an ethynylene‐naphthylene linker between the chlorin π‐skeleton and hydroxymethyl group were prepared as models of chlorosomal Chls. Their syntheses achieved via Sonogashira coupling reaction. J ‐aggregation behaviors investigated by electronic absorption circular dichroism spectroscopic measurements. These studies revealed that 2,6‐naphthylene inserted Chl‐ gave single species in aqueous Triton X‐100 micellar solution with larger red‐shift value (1270 cm −1 ) Qy band spite its longer compared p ‐phenylene derivative (970 ). unique optical properties also discussed based on computational studies, which indicated different positional relation rings assemblies structure.

Language: Английский

Citations

0
Time-Dependent Chemiluminescence Fingerprint for Ultrasensitive Trap State Identification in Zinc Gallates DOI
Feng Yang,

Yuxian Zhou,

Xinyi Yang

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

With the growing demand for highly efficient sensors capable of rapid and reliable detection trap states in semiconductors, developing novel chemical physical phenomena induced by at nanomaterial interfaces has thus emerged as a critical technological field. Herein, we developed an innovative time-dependent chemiluminescence (CL) method evaluating semiconductor materials. By leveraging unique Cr3+-activated zinc gallate (ZGOC) semiconductors hydroxyl radical (·OH)-rich EDTA-Fe2+-H2O2 system, achived rational manipulation ·OH-triggered near-infrared (NIR) CL induction. To extract high-information-density outputs from response, ZGOC nanocrystals associated with different Cr3+-related were precisely identified distinct "fingerprint" pattern robust statistical analysis. Remarkably, generalizability this was validated using mixed models containing two typical samples other adjustable systems. The probe state evaluation provides advantages such cost-effectiveness, operational simplicity, offering promising alternative to conventional assessment methods.

Language: Английский

Citations

0
Comprehensive Understanding of the Structural Modulation Principles for Highly Efficient Photoelectrochemical/Photocatalytic Processes via X‐Ray Absorption Spectroscopy DOI Open Access
Tao Yi, Xiaolan Xu, Xiaodong Chen

et al.

ChemCatChem, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Photoelectrochemical (PEC) and photocatalytic (PC) reactions offer promising pathways toward the efficient conversion of intermittent solar energy into high value‐added chemicals. To improve efficiency energy, rational modulation both light absorbers surface sites is required for sunlight‐harvesting capacity reaction activity, yet depending on a comprehensive understanding process. In this regard, X‐ray absorption spectroscopy (XAS) plays critical role in probing electronic geometric structures active materials PEC PC reactions, thereby revealing related structure‒activity relationships providing guide further structural modulation. This review begins with principles PEC/PC reactions. The fundamental knowledge XAS then introduced, including basics near edge structure (XANES) extended fine (EXAFS), general experimental methods, situ technique. Furthermore, we provide several examples to illustrate how can be utilized reveal (e.g., water splitting, CO 2 reduction, N fixation). Finally, major challenges future opportunities exciting field are highlighted.

Language: Английский

Citations

0
Advanced X-ray absorption spectroscopy for probing dynamics in CO2 reduction reaction electrocatalysts DOI Creative Commons

Beibei Sheng,

Dengfeng Cao, Shuangming Chen

et al.

Communications Materials, Journal Year: 2025, Volume and Issue: 6(1)

Published: April 4, 2025

Language: Английский

Citations

0