Chirality Engineering of Nanostructured Copper Oxide for Enhancing Oxygen Evolution from Water Electrolysis DOI
Ying Li, Liang Qiu, Rui Tian

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract The exploration of a new conceptual strategy for improving the oxygen evolution reaction (OER) earth‐abundant electrocatalysts is critical. In this study, chiral copper oxide nanoflower explored by self‐assembly method. characterization suggests structure originates from crystal plane‐level helical stack secondary nanosheets. Of note, assembly illustrates record‐high degree spin polarization 96%, indicating ideal alignment electron spin. Moreover, density function theory calculations show reducing energy barrier (REB) while switching potential‐determining step *O→*OOH to *OH→*O. Together with enhanced electrochemical active surface area and accelerated charge transfer, production ground‐state triplet O 2 improved via spin‐forbidden route that involves singlet H O/OH•. Consequently, shows overpotential 308 mV at 10 mA cm −2 Tafel slope 93.5 dec −1 , which even superior commercial RuO (310 mV, 101 ). This study presents OER activity simultaneously enhancing electronic properties lowering REB an non‐noble electrocatalyst chirality engineering.

Language: Английский

Chiral Induced Spin Selectivity DOI Creative Commons
Brian P. Bloom, Yossi Paltiel, Ron Naaman

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(4), P. 1950 - 1991

Published: Feb. 16, 2024

Since the initial landmark study on chiral induced spin selectivity (CISS) effect in 1999, considerable experimental and theoretical efforts have been made to understand physical underpinnings mechanistic features of this interesting phenomenon. As first formulated, CISS refers innate ability materials act as filters for electron transport; however, more recent experiments demonstrate that displacement currents arising from charge polarization molecules lead without need net flow. With its identification a fundamental connection between symmetry materials, promises profound ubiquitous implications existing technologies new approaches answering age old questions, such homochiral nature life. This review begins with discussion different methods measuring then provides comprehensive overview known exhibit CISS-based phenomena before proceeding identify structure-property relations delineate leading models effect. Next, it identifies some physics, chemistry, biology. The ends critical assessment field comments future outlook.

Language: Английский

Citations

121
Metal–Ligand Spin-Lock Strategy for Inhibiting Anion Dimerization in Li-Rich Cathode Materials DOI

Zewen Jiang,

Kun Zhang, Qihang Ding

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Anion dimerization poses a significant challenge for the application of Li-rich cathode materials (LCMs) in high-energy-density Li-ion batteries because its deleterious effects, including rapid capacity and voltage decay, sluggish reaction kinetics, large hysteresis. Herein, we propose metal–ligand spin-lock strategy to inhibit anion dimerization, which involves introducing an Fe–Ni couple having antiferromagnetic superexchange interaction into LCM lock spin orientations unpaired electrons anions same direction. As proof concept, applied this intralayer disordered Li2TiS3 (ID-LTS) S–S dimerization. Electrochemical characterization using galvanostatic charge/discharge intermittent titration technique demonstrated considerably enhanced anionic redox activity, reduced hysteresis, improved kinetics Fe–Ni-couple-incorporated ID-LTS. Fe L2,3-edge X-ray absorption spectroscopy magnetic susceptibility measurements revealed that effect consequent suppression involve ligand-to-metal charge transfer between S Fe. Further electrochemical tests on layered oxide (Li0.7Li0.1Fe0.2Ni0.1Mn0.6O2) indicated importance π backbond enhancing from These findings demonstrate potential our development high-performance LCMs.

Language: Английский

Citations

2
Tuning the Chirality Evolution in Achiral Subnanometer Systems by Judicious Control of Molecule Interactions DOI
Qingda Liu,

Zhou Sheng,

Wenxiong Shi

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(18), P. 12819 - 12827

Published: April 26, 2024

Chirality evolution from molecule levels to the nanoscale in an achiral system is a fundamental issue that remains undiscovered. Here, we report assembly of polyoxometalate (POM) clusters into chiral subnanostructures systems by programmable single-molecule interactions. Driven competing binding Ca2+ and surface ligands, POM assemblies would twist helical nanobelts, nanorings, nanotubes with tunable helicity. Chiral molecules can be used differentiate formation energies isomers immobilize homochiral isomer, where strong circular dichroism (CD) signals are obtained both solutions films. nanobelts as circularly polarized light (CPL) photodetectors due their distinct chiroptic responsivity for right left CPL. By fine-tuning interactions at levels, morphology CD spectra precisely controlled, providing atomic precision model investigation structure–chirality relationship chirality manipulation nanoscale.

Language: Английский

Citations

9
Chiral carbonized polymer dots:A comprehensive review DOI

Hebing Pei,

Zengdong Zhang,

Meixuan Ouyang

et al.

Sustainable materials and technologies, Journal Year: 2025, Volume and Issue: 43, P. e01271 - e01271

Published: Jan. 31, 2025

Language: Английский

Citations

1
Chiral-induced spin selectivity in electrocatalysis DOI
Sujun Zheng, Hong Chen, Shuang‐Quan Zang

et al.

Matter, Journal Year: 2025, Volume and Issue: 8(2), P. 101924 - 101924

Published: Feb. 1, 2025

Language: Английский

Citations

1
Operando evidence on the chirality-enhanced oxygen evolution reaction in intrinsically chiral electrocatalysts† DOI Creative Commons
Felipe A. Garcés‐Pineda, Jiahao Yu, Camilo A. Mesa

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Intrinsically chiral oxides show enhanced activity towards the oxygen evolution reaction in full cell electrolysers. Enantiopure active sites were detected operando by circular dichroism-spectro-electrochemical data.

Language: Английский

Citations

1
Spin effects in electrocatalysis: Mechanisms, catalyst engineering, modulation, and applications DOI

Sichen Huo,

Xinyu Wang, Yanjie Chen

et al.

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 164, P. 100967 - 100967

Published: March 5, 2025

Language: Английский

Citations

1
Sub-1 nm Materials Chemistry: Challenges and Prospects DOI
Qingda Liu,

Xiaoya Wang,

Xun Wang

et al.

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

Published: Sept. 23, 2024

Subnanometer materials (SNMs) refer to nanomaterials with a feature size close 1 nm, similar the diameter of single polymer, DNA strand, and cluster/unit cell. The growth assembly subnanometer building blocks can be controlled by interactions at atomic levels, representing limit for precise manipulation materials. size, geometry, flexibility 1D SNMs inorganic backbones are polymer chains, bringing excellent gelability, adhesiveness, processability different from nanocrystals. ultrahigh surface atom ratio results in significantly increased energy, leading significant rearrangement atoms. Unconventional phases, immiscible metal alloys, high entropy few layers stabilized, spontaneous twisting may induce intrinsic structural chirality. Electron delocalization also emerge subnanoscale, giving rise enhanced catalytic activity. In this perspective, we summarized recent progress on SNMs, including their synthesis, polymer-like properties, metastable chirality, toward energy conversion. As critical region nanoscience, development functional fuse boundary polymers conduce manufacturing levels.

Language: Английский

Citations

8
Enhanced Replenishment of Active Lattice Oxygen Using Chiral Copper Oxide DOI
Xinru Chen,

Chengyan Li,

Meijia Jiang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(22), P. 28517 - 28525

Published: May 20, 2024

Effective catalytic performance of the transition metal oxide is attributed to high specific surface areas, abundant oxygen atoms, and balanced valence ratios. Although chirality has attracted attention, most studies have focused on optical application. A few chiral oxides were used as electrocatalysts photocatalysts. The influence catalysts thermal catalysis process been less explored. In this study, Mn-loaded (M/l-CuO M/d-CuO) achiral CuO (M/a-CuO) synthesized compared in oxidization toluene. Spectrally analyzed Mn was well-dispersed both CuO. l-CuO d-CuO showed nanoflower-like chirality. angles between each (001) plane source toluene turnover frequency (TOF) samples order Mn/d-CuO (5.6 × 10–5 s–1) > Mn/l-CuO (4.4 Mn/a-CuO (3.2 at 240 °C, consistent with replenishment rate. as-prepared had similar ratios lattice oxygen/surface adsorbed oxygen, Mn3+/Mn4+, Cu+/Cu2+. higher TOF chirality, which increased speed from gaseous phase solid surface. Our study indicates gas–solid a structure–activity viewpoint.

Language: Английский

Citations

7
Spin-related excited-state phenomena in photochemistry DOI Creative Commons
Chuang Zhang, Chen Ye, Jiannian Yao

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 11(9)

Published: July 18, 2024

ABSTRACT The spin of electrons plays a vital role in chemical reactions and processes, the excited state generated by absorption photons shows abundant spin-related phenomena. However, importance electron photochemistry studies has been rarely mentioned or summarized. In this review, we briefly introduce concept based on multiplicity state, which leads to observation various photophysical properties photochemical reactivities. Then, focus recent advances terms light-induced magnetic properties, excited-state magneto-optical effects spin-dependent reactions. review aims provide comprehensive overview utilize manipulating above processes. Finally, discuss existing challenges emerging field future opportunities such as smart materials, optical information technology spin-enhanced photocatalysis.

Language: Английский

Citations

6