Atomic Layer Engineering of Pd Nanosheets for an Enhanced Hydrogen Evolution Reaction DOI
S. Ando, Eisuke Yamamoto, Makoto Kobayashi

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(36), P. 11239 - 11245

Published: Aug. 5, 2024

Thickness control of two-dimensional (2D) metal nanosheets (metallenes) has scientific significance for energy and catalyst applications, yet is unexplored owing to the lack an efficient approach tailored synthesis metallenes with controlled atomic layers. Here we report a 2D template-directed ultrathin Pd well-controlled thicknesses. Molecularly thin single-crystalline well-defined hexagonal morphologies were synthesized via one-pot method 2,4,6-trichlorophenyl formate. Such used as hard templates thicknesses (9, 11, 13, 15 layers). Hard X-ray photoelectron spectroscopy density functional theory calculations revealed unique electronic states in thickness-controlled nanosheets; these included reduced surface charges bulk, increased work functions, decreased d-band centers. Thus, layer engineering enabled fine-tuning improve hydrogen evolution reaction.

Language: Английский

Bimetal anchoring porous MXene nanosheets for driving tandem catalytic high‐efficiency electrochemical nitrate reduction DOI

Rongyu Guo,

Zhijie Cui,

Tianyang Yu

et al.

AIChE Journal, Journal Year: 2024, Volume and Issue: 71(2)

Published: Oct. 17, 2024

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) is considered a promising strategy for ammonia synthesis and removal, in which catalyst development crucial. Herein, series of bimetal (Co Cu) anchoring porous MXene nanosheets x Cu y @PM) catalysts were prepared by combining etching strategy. On the one hand, Co bimetals provided tandem catalytic active sites NO RR. other in‐plane PM exhibited good electrical conductivity multiple transport pathways. Consequently, optimized 7 @PM achieved high yield 7.43 mg h −1 cat. an excellent Faraday efficiency (FE) 95.9%. The mechanism RR was investigated analyzing electrolysis products situ Fourier transform infrared spectroscopy. Furthermore, based ZnNO − battery superior power density 5.59 mW cm −2 NH FE 92.3%. This work presents effective to design MXene‐based high‐performance electrocatalysts.

Language: Английский

Citations

6
Toward next-generation wearable sensors based on MXene hydrogels DOI

Qinglong He,

Chendong Zhao,

Hao Chen

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(38), P. 25622 - 25642

Published: Jan. 1, 2024

Here in this review, we systematically analyze the design principles of MXene hydrogels for next-generation wearable sensors. Emphasis is placed on multiple sensors based electrical/mechanical enhancement hydrogel network.

Language: Английский

Citations

5
Fueling the future of clean energy with self‐supported layered double hydroxides‐based electrocatalysts: A step toward sustainability DOI Creative Commons

Man‐Kei Wong,

Jian Yiing Loh,

Feng Ming Yap

et al.

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

Published: Nov. 5, 2024

Abstract Amid the ongoing transition toward renewable fuels, self‐supported layered double hydroxides (LDHs) are envisioned as propitious electrocatalysts for reinvigorating electrocatalysis realm, thereby facilitating environmental remediation and bolstering sustainable global energy security. Exploiting appealing attributes such unique lamellar structure, abundant active sites, tunable intercalation spacing compositional flexibility, LDHs boast remarkable activity, selectivity stability across diverse energy‐related applications. By virtue of addressing technological time prominence excavating their renaissance, this review first encompasses facile state‐of‐the‐art synthetic approaches alongside intriguing modification strategies, deciphering authentic structure–performance correlations advancing more robust precise catalyst design. Aside from this, heterostructure engineering employing diversified ranges coupling materials is highlighted, to construct ground‐breaking binder‐free LDHs‐based heterostructures endowing with unprecedented activity stability. Subsequently, milestone gained experimental research theoretical modeling frontier in multifarious electrocatalytic applications, including HER, OER, UOR, AOR, seawater splitting other fundamental conversion reactions rigorously unveiled. As a final note, brief conclusion presented an outline future prospects. Essentially, aspires offer enlightenment incite wise inspiration evolution innovative resilient next‐generation catalysts. image

Language: Английский

Citations

4
Cu‐Ru Bicenter Synergistically Triggers Tandem Catalytic Effect for Electroreduction of Nitrate to Ammonium DOI Open Access

Liyang Lv,

Hao Tan,

Yuying Liu

et al.

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

Published: Jan. 10, 2025

Abstract The electrochemical transformation of nitrate (NO 3 − ) into ammonia (NH holds significant promise to addresses nitration contamination and offers a sustainable alternative the Haber–Bosch process. However, sluggish kinetics hinders its large‐scale application. Herein, Cu‐doped SrRuO synergetic tandem catalyst is designed synthesized, which demonstrates exceptional performance in converting NO NH . Specifically, this achieves maximum Faradaic efficiency 95.4% for production, along with high yield rate 7196 µg h −1 mg cat. A series detailed characterizations reveals that doped Cu ions modify local electronic environment Ru 4 d e g orbital , thereby facilitating highly efficient electron transfer processes. In situ delta X‐ray absorption near‐edge structure (ΔXANES), synchrotron radiation‐based Fourier transform infrared (SR‐FTIR) Raman spectroscopy identified * 2 generated on active sites subsequently hydrogenated sites. Combined theoretical studies, it confirmed significantly reduces energy barriers rate‐determining step ( NOH), enhancing synthesis. This work not only fundamental insights mechanisms cation substitution regulating perovskite catalysts, but also provides promising avenue electro‐synthesis ammonia.

Language: Английский

Citations

0
Fine-tuning electronic structure of S-NiMoO4 coupled with NiFe-layered double hydroxides for enhanced electrochemical water oxidation DOI

Yujie Xiang,

Zhengting Wang, Ying Zhang

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 640, P. 236699 - 236699

Published: March 14, 2025

Language: Английский

Citations

0
Two-dimensional materials for NOx reduction to ammonia: From electrocatalyst to system DOI Creative Commons
Suwen Wang,

Junkai Xia,

Xiaohui Yang

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 535, P. 216610 - 216610

Published: March 21, 2025

Language: Английский

Citations

0
Atomic Layer Engineering of Pd Nanosheets for an Enhanced Hydrogen Evolution Reaction DOI
S. Ando, Eisuke Yamamoto, Makoto Kobayashi

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(36), P. 11239 - 11245

Published: Aug. 5, 2024

Thickness control of two-dimensional (2D) metal nanosheets (metallenes) has scientific significance for energy and catalyst applications, yet is unexplored owing to the lack an efficient approach tailored synthesis metallenes with controlled atomic layers. Here we report a 2D template-directed ultrathin Pd well-controlled thicknesses. Molecularly thin single-crystalline well-defined hexagonal morphologies were synthesized via one-pot method 2,4,6-trichlorophenyl formate. Such used as hard templates thicknesses (9, 11, 13, 15 layers). Hard X-ray photoelectron spectroscopy density functional theory calculations revealed unique electronic states in thickness-controlled nanosheets; these included reduced surface charges bulk, increased work functions, decreased d-band centers. Thus, layer engineering enabled fine-tuning improve hydrogen evolution reaction.

Language: Английский

Citations

2