Insights into the hydrogen generation and catalytic mechanism on Co-based nanocomposites derived from pyrolysis of organic metal precursor DOI Creative Commons
Huanhuan Zhang, Shuling Liu, Yanyan Liu

et al.

iScience, Journal Year: 2024, Volume and Issue: 27(5), P. 109715 - 109715

Published: April 10, 2024

Hydrogen generation from boron hydride is important for the development of hydrogen economy. Cobalt (Co) element has been widely used in hydrolysis hydride. Pyrolysis a common method materials synthesis catalytic fields. Herein, Co-based nanocomposites derived pyrolysis organic metal precursors and are summarized discussed. The different consisting MOF, supported, metal, phosphide summarized. mechanism dissociation based on oxidative addition-reduction elimination, pre-activation mechanism, SN2 four-membered ring acid-base intensively Finally, conclusions outlooks conveyed design high-efficiency catalysts, characterization catalyst structure, enhancement activities, investigation stability active structure. This review can provide guidance designing catalysts boosting

Language: Английский

Thermal catalytic reforming for hydrogen production with zero CO 2 emission DOI
Mi Peng, Yuzhen Ge, Rui Gao

et al.

Science, Journal Year: 2025, Volume and Issue: 387(6735), P. 769 - 775

Published: Jan. 2, 2025

Carbon-neutral hydrogen production is of key importance for the chemical industry future. We demonstrate a new thermal catalytic route partial reforming ethanol into and acetic acid with near-zero carbon dioxide emissions. This reaction enabled by catalyst containing high density atomic Pt 1 Ir species supported on reactive alpha-molybdenum carbide substrate, achieving rate 331.3 millimoles per gram hour an selectivity 84.5% at 270°C, therefore more energy-efficient compared standard reforming. Techno-economic analysis demonstrates potential profitability operation industrial scale, presenting opportunity to produce substantially reduced footprint.

Language: Английский

Citations

3
High-curvature single-atom catalysts for electrocatalysis: A review DOI

Caili Chen,

Zekai Zhang,

Liangli Dai

et al.

Applied Catalysis A General, Journal Year: 2025, Volume and Issue: unknown, P. 120160 - 120160

Published: Feb. 1, 2025

Language: Английский

Citations

2
Al Promotion of In2O3 for CO2 Hydrogenation to Methanol DOI Creative Commons
Liang Liu,

Brahim Mezari,

Nikolay Kosinov

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(24), P. 15730 - 15745

Published: Nov. 22, 2023

In2O3 is a promising catalyst for the hydrogenation of CO2 to methanol, relevant renewable energy storage in chemicals. Herein, we investigated promoting role Al on using flame spray pyrolysis prepare series In2O3–Al2O3 samples single step (0–20 mol % Al). promoted methanol yield, with an optimum being observed at content 5 %. Extensive characterization showed that can dope into lattice (maximum ∼ 1.2 %), leading formation more oxygen vacancies involved adsorption and formation. The rest present as small Al2O3 domains surface, blocking active sites contributing higher CO selectivity. At (≥10 Al), particle size decreases due stabilizing effect Al2O3. Nevertheless, these smaller particles are prone sintering during since they appear be easily reduced. These findings show subtle effects structural promoter such reducibility texture catalyst.

Language: Английский

Citations

30
Stabilizing Undercoordinated Zn Active Sites through Confinement in CeO2 Nanotubes for Efficient Electrochemical CO2 Reduction DOI

Si‐Tong Guo,

Yu‐Wei Du,

Huihua Luo

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(2)

Published: Dec. 8, 2023

Abstract Zn‐based catalysts hold great potential to replace the noble metal‐based ones for CO 2 reduction reaction (CO RR). Undercoordinated Zn (Zn δ+ ) sites may serve as active enhanced production by optimizing binding energy of *COOH intermediates. However, there is relatively less exploration into dynamic evolution and stability during process. Herein, we present ZnO, /ZnO varying applied potential. Theoretical studies reveal that could suppress HER HCOOH induce generation. And presents highest selectivity (FE 70.9 % at −1.48 V vs. RHE) compared ZnO. Furthermore, propose a CeO nanotube with confinement effect Ce 3+ /Ce 4+ redox stabilize species. The hollow core–shell structure /ZnO/CeO catalyst enables extremely expose electrochemically area while maintaining long‐time stability. Certainly, target affords FE 76.9 −1.08 RHE no significant decay in excess 18 h.

Language: Английский

Citations

29
Atomically engineering the metal-support interaction of single-atom Cu/TiO2 for efficient polyethylene terephthalate plastic photoreforming DOI
Zhida Li, Yang Yang, Chunyue Zhang

et al.

Chem Catalysis, Journal Year: 2024, Volume and Issue: 4(3), P. 100902 - 100902

Published: Jan. 25, 2024

Language: Английский

Citations

15
Spatially and Temporally Resolved Dynamic Response of Co-Based Composite Interface during the Oxygen Evolution Reaction DOI

Xia Zhong,

Jingyao Xu,

Junnan Chen

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7467 - 7479

Published: March 6, 2024

Interfacial interaction dictates the overall catalytic performance and behavior rules of composite catalyst. However, understanding interfacial active sites at microscopic scale is still limited. Importantly, identifying dynamic action mechanism "real" site interface necessitates nanoscale, high spatial-time-resolved complementary-operando techniques. In this work, a Co3O4 homojunction with well-defined effect developed as model system to explore spatial-correlation response toward oxygen evolution reaction. Quasi in situ scanning transmission electron microscopy–electron energy-loss spectroscopy spatial resolution visually confirms size characteristics dimension, showing that activation originates from strong interactions 3 nm. Multiple time-resolved operando techniques explicitly capture changes adsorption for key reaction intermediates. Combined density functional theory calculations, we reveal adjustment multiple configurations intermediates by highly activated facilitates O–O coupling *OOH deprotonation processes. The dual regulation accelerates kinetics serves pivotal factor promoting activity structure. resulting catalyst (Co–B@Co3O4/Co3O4 NSs) exhibits an approximately 70-fold turnover frequency 20-fold mass than monomer structure (Co3O4 leads significant (η10 ∼257 mV). visual complementary analysis multimodal operando/in provides us powerful platform advance our fundamental structure–activity relationships structured catalysts.

Language: Английский

Citations

15
Evolution and performances of Ni single atoms trapped by mesoporous ceria in Dry Reforming of Methane DOI
Jiwei Li, Congcong Du,

Qingyue Feng

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 354, P. 124069 - 124069

Published: April 24, 2024

Language: Английский

Citations

13
Strongly Electron-Interacting Ru–Ce Pair Sites in RuOx/CeO2–HAP for Efficient Oxidation of MMF to FDCA DOI

Gaobo Lin,

Haoan Fan,

You Zhan

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(3), P. 1862 - 1873

Published: Jan. 19, 2024

As a potential alternative to petroleum-derived terephthalic acid (TPA), the general production of 2,5-furandicarboxylic (FDCA) through 5-hydroxymethylfurfural (HMF) oxidation has fallen short industrial expectations due HMF's storage instability and cost. Here, we propose strategy involving Ru cation coordination manipulation achieve efficient 5-methoxymethylfurfural (MMF) FDCA by constructing Ru–Ce paired site on CeO2-doped hydroxyapatite precursor (CeO2–HAP). By optimizing reaction conditions, RuOx/CeO2–HAP catalyst demonstrated complete MMF conversion 100% high yield 83.7% under base-free conditions (130 °C, 5 bar O2 pressure, 15 h). Hydrogen temperature-programmed reduction (H2-TPR) X-ray photoelectron spectroscopy (XPS) revealed strong interaction between Ce with electron transfer from Ru. Density functional theory (DFT) computations indicated that d–d π σ orbital interactions provided sufficient electrons for vacant orbitals Ru, dispersing density states (DOS) around low energy level facilitate adsorption appropriate strength, thereby enhancing process. This study not only provides an activity but also conducts comprehensive investigation into impact oxidation, offering insights subsequent high-value-added products such as FDCA.

Language: Английский

Citations

12
Specific and Magnetic Covalent Organic Framework Confined Os Nanoclusterzyme for Interference‐Free and Ultrasensitive Biosensing DOI
Pengyou Zhou,

Yuwei Dai,

Xiaorui Lin

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(34)

Published: April 13, 2024

Abstract The peroxidase (POD)‐mimic nanozymes can be a potential tool for point‐of‐care (POC) diseases diagnosis. However, the complex sample matrix and unspecific multiple‐enzyme activities of nanozyme generate false background signal decrease diagnostic accuracy. Here, magnetic POD‐specific covalent organic framework (COF) confined osmium (Os) nanoclusterzyme Fe 3 O 4 @COF@Os is developed biomarkers biosensing. First, found that catalytic activity specificity regulated by deoxidizers functional groups COF ligands. By using ascorbic acid as deoxidizer F ligands, displayed superior negligible oxidase (OXD) catalase (CAT) mimic activity. Therefore, separate analyze targets in bio‐matrix without interference. For application, based lateral flow assay established serum cancer biomarker prostate‐specific antigen, detection limit 3.83 pg mL −1 . clinical prostatic samples, accuracy 100% with correlation coefficient 0.998 commercial ELISA kit. chronic disease sensing, salivary glucose quantified low 0.1 µ m , interference favorable recyclability. This specific offer promising pretreatment‐free POC strategy rapid accurate

Language: Английский

Citations

12
Directional Growth and Density Modulation of Single‐Atom Platinum for Efficient Electrocatalytic Hydrogen Evolution DOI
Xinyang Liu, Yuxuan Zhou, Jingkai Lin

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(34)

Published: May 31, 2024

Dispersion of single atoms (SAs) in the host is important for optimizing catalytic activity. Herein, we propose a novel strategy to tune oxygen vacancies CeO

Language: Английский

Citations

12