Science China Materials, Journal Year: 2024, Volume and Issue: 67(6), P. 1706 - 1720
Published: April 8, 2024
Language: Английский
Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 4797 - 4806
Published: Feb. 7, 2024
Language: Английский
Citations
76
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)
Published: Jan. 30, 2024
Abstract Efficient dual‐single‐atom catalysts are crucial for enhancing atomic efficiency and promoting the commercialization of fuel cells, but addressing sluggish kinetics hydrogen oxidation reaction (HOR) in alkaline media facile site generation remains formidable challenges. Here, we break local symmetry ultra‐small ruthenium (Ru) nanoparticles by embedding cobalt (Co) single atoms, which results release Ru atoms from on reduced graphene oxide (Co 1 1,n /rGO). In situ operando spectroscopy theoretical calculations reveal that oxygen‐affine Co atom disrupts nanoparticles, resulting parasitic within nanoparticles. The interaction between forms effective active centers. parasitism modulates adsorption OH intermediates sites, accelerating HOR through faster formation *H 2 O. As anticipated, /rGO exhibits ultrahigh mass activity (7.68 A mg −1 ) at 50 mV exchange current density (0.68 mA cm −2 ), 6 7 times higher than those Ru/rGO, respectively. Notably, it also displays exceptional durability surpassing commercial Pt catalysts. This investigation provides valuable insights into hybrid multi‐single‐atom metal nanoparticle catalysis.
Language: Английский
Citations
72
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)
Published: Feb. 7, 2024
Single-atom nanozymes (SAzymes) showcase not only uniformly dispersed active sites but also meticulously engineered coordination structures. These intricate architectures bestow upon them an exceptional catalytic prowess, thereby captivating numerous minds and heralding a new era of possibilities in the biomedical landscape. Tuning microstructure SAzymes on atomic scale is key factor designing targeted with desirable functions. This review first discusses summarizes three strategies for their impact reactivity biocatalysis. The effects choices carrier, different synthesis methods, modulation first/second shell, type number metal centers enzyme-like activity are unraveled. Next, attempt made to summarize biological applications tumor therapy, biosensing, antimicrobial, anti-inflammatory, other from mechanisms. Finally, how designed regulated further realization diverse reviewed prospected. It envisaged that comprehensive presented within this exegesis will furnish novel perspectives profound revelations regarding SAzymes.
Language: Английский
Citations
50
Nano Letters, Journal Year: 2024, Volume and Issue: 24(3), P. 1015 - 1023
Published: Jan. 12, 2024
Ru-related catalysts have shown excellent performance for the hydrogen evolution reaction (HER) and oxidation (HOR); however, a deep understanding of Ru-active sites on nanoscale heterogeneous support catalysis is still lacking. Herein, click chemistry strategy proposed to design Ru cluster-decorated nanometer RuxFe3–xO4 heterointerfaces (Ru/RuxFe3–xO4) as highly effective bifunctional catalysts. It found that introducing into nanometric Fe3O4 species breaks symmetry configuration optimizes active site in Ru/RuxFe3–xO4 HER HOR. As expected, catalyst displays prominent alkaline HOR with mass activity much higher than commercial Pt/C well robust stability during because strong interaction between cluster support, optimized adsorption intermediate (Had OHad). This work sheds light promsing approach improving electrocatalysis by breaking atomic dimension symmetry.
Language: Английский
Citations
43
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)
Published: May 27, 2024
Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.
Language: Английский
Citations
41
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 10, 2024
Abstract Electrocatalytic water splitting driven by sustainable energy is a clean and promising water‐chemical fuel conversion technology for the production of high‐purity green hydrogen. However, sluggish kinetics anodic oxygen evolution reaction (OER) pose challenges large‐scale hydrogen production, limiting its efficiency safety. Recently, OER has been replaced nucleophilic oxidation (NOR) with biomass as substrate coupled (HER), which attracted great interest. Anode NOR offers faster kinetics, generates high‐value products, reduces consumption. By coupling reaction, can be enhanced while yielding products or degrading pollutants. Therefore, NOR‐coupled HER another new electrolytic strategy after significance realizing development global decarbonization. This review explores potential reactions an alternative to delves into mechanisms, guiding future research in production. It assesses different methods, analyzing pathways catalyst effects. Furthermore, it evaluates role electrolyzers industrialized discusses prospects challenges. comprehensive aims advance efficient economical
Language: Английский
Citations
40
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)
Published: May 9, 2024
Hydrazine oxidation-assisted water splitting is a critical technology to tackle the high energy consumption in large-scale H
Language: Английский
Citations
33
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(30)
Published: May 13, 2024
The hydrazine oxidation-assisted H
Language: Английский
Citations
29
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(33)
Published: May 28, 2024
Hydrolysis of ammonia borane (NH
Language: Английский
Citations
29
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(31), P. 21453 - 21465
Published: July 25, 2024
As the most promising hydrogen evolution reaction (HER) electrocatalysts, platinum (Pt)-based catalysts still struggle with sluggish kinetics and expensive costs in alkaline media. Herein, we accelerate by optimizing local environment of Pt species metal oxide heterointerfaces. The well-dispersed PtRu bimetallic clusters adjacent MO2–x (M = Sn Ce) on carbon nanotubes (PtRu/CNT@MO2–x) are demonstrated to be a potential electrocatalyst for HER, exhibiting an overpotential only 75 mV at 100 mA cm–2 1 M KOH. excellent mass activity 12.3 μg–1Pt+Ru specific 32.0 cm–2ECSA 70 56 64 times higher than those commercial Pt/C. Experimental theoretical investigations reveal that heterointerfaces between can simultaneously promote H2O adsorption activation, while modification Ru further optimizes H dissociation energy barriers. Then, matching accelerated elementary steps achieved superb generation This work provides new insight into catalytic design optimize obtaining ideal HER performance.
Language: Английский
Citations
29