Efficient Advanced Reduction with Cobalt Phthalocyanine-Decorated N-Doped Mesoporous Carbon DOI
Mengjiao Xu, Kaizhi Wang, Wendi Guo

et al.

Published: Jan. 1, 2023

Effective removal of environmental pollutants relies heavily on advanced reduction processes (ARPs), and developing effective low cost catalysts is pivotal. Herein, we demonstrate that cobalt phthalocyanine (CoPc) adsorbed nitrogen-doped mesoporous carbon (NMC) can serve as an efficient catalyst for ARPs. The CoPc-NMC composite stands out its remarkable ability to reduce hexavalent Cr(VI) using formic acid the reducing agent. This exceptional performance attributed distinct characteristics composite, including atomically dispersed CoPc strong π-π interactions with rich pyridinic N-doped support. Our research also reveals complex involvement active species, such electrons hydrogen radicals, which clarifies mechanism behind this catalytic process. Ultimately, study not only sheds light factors influence activity but offers critical insights into more strategies in applications.

Language: Английский

Adjacent Metal Atomic Pairs Within Atomically Dispersed Catalysts for Reaching a Synergistic Electrocatalytic CO2 Reduction: A Review DOI
Changli Wang,

Zunhang Lv,

Xiao Feng

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(21)

Published: Feb. 27, 2024

Abstract In response to the global climate change and energy crisis, electrocatalytic CO 2 reduction reaction (ECR) is regarded as one of potential ways simultaneously reach conversion obtain various value‐added products. Currently, several challenges remain for in‐depth understanding ECR from fundamentals, including ambiguous structure‐activity relationships, uncontrollable catalytic selectivity, complex mechanisms. Compared traditional metal nanoparticle‐based materials, atomically dispersed catalysts (ADCs) have aroused significant interest owing their maximal atomic utilization simplified site configuration, offering a superior platform discussing relationships during ECR. Especially, adjacent pairs (AAPs) within ADCs are gradually emphasized novel concept follow synergistic mechanisms Herein, first time broad AAPs analyzed how reached effect summarized. view varying on different supports, three types supports illustrated (containing graphene model, functional porous frameworks, metals oxides), aiming help scholars with more insights in broadening feasible ADCs.

Language: Английский

Citations

15
Hydrogen production from chemical hydrogen storage materials over copper‐based catalysts DOI Creative Commons

Jianjun Long,

Haochong Wu,

Yuan‐Ting Liu

et al.

cMat., Journal Year: 2024, Volume and Issue: 1(1)

Published: June 1, 2024

Abstract Hydrogen, as a clean and efficient energy source, is one of the important carriers in future. However, safe storage delivery hydrogen still bottleneck its practical applications. Chemical hydrides (such NaBH 4 , NH 3 BH N 2 H ·H O, HCOOH) are considered potential chemical materials that can achieve rapid on‐site production. At present, most critical issue for them to develop economic catalysts production from hydrides. Copper (Cu) promising catalyst reactive metals among first‐row transition economically cheap. In this review, we outline recent advancements Cu‐based catalyzing Moreover, synthesis methods, characterization techniques, catalytic activity were also introduced. Finally, brief conclusion outlook given application dehydrogenation We hope review will stimulate interest research area

Language: Английский

Citations

15
Precise synthesis of dual atom sites for electrocatalysis DOI
Yao Wang,

Fengya Ma,

Guoqing Zhang

et al.

Nano Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Language: Английский

Citations

13
Towards Functionality and Deactivation of Metal‐Single‐Atom in Heterogeneous Photocatalysts DOI
Lei Cheng,

Qiaolin Wu,

Hanjun Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: June 25, 2024

Single-atom heterogeneous catalysts (SAHCs) provide an enticing platform for understanding catalyst structure-property-performance relationships. The 100% atom utilization and adjustable local coordination configurations make it easy to probe reaction mechanisms at the atomic level. However, progressive deactivation of metal-single-atom (MSA) with high surface energy leads frequent limitations on their commercial viability. This review focuses atomistic-sensitive reactivity atomistic-progressive MSA a unifying framework specific functionality potential drivers MSA, thereby bridging function, purpose-modification structure-performance insights sustainable accessibility. dominant functionalization atomically precise acting properties encompassing photocatalytic reactions is first systematically explored. Afterward, detailed analysis various modes strategies enhance durability presented, providing valuable into design SAHCs deactivation-resistant stability. Finally, remaining challenges future perspectives toward industrialization, anticipating shedding some light next stage atom-economic chemical/energy transformations are presented.

Language: Английский

Citations

9
Combination of nanoparticles with single-metal sites synergistically boosts co-catalyzed formic acid dehydrogenation DOI Creative Commons
Yanzhe Shi, Bing Luo, Rui Sang

et al.

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

Published: Sept. 18, 2024

Language: Английский

Citations

7
Alkali Metal Ions Stabilizing Copper(I)–Sulfur Bonds for Efficient Formate Production from Electrochemical CO2 Reduction DOI
Xianglong Cui, Ming Wu, Guoyu Hou

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(15), P. 11857 - 11864

Published: July 25, 2024

Low-cost copper (Cu)-based electrocatalysts have been widely established with the special capability of generating C2+ products from CO2 reduction reaction (CO2RR). However, efficient formate production has rarely achieved due to instant most reported Cu-based catalysts upon CO2RR, and derived metallic Cu compromises C1 selectivity. Herein, we demonstrate that incorporation alkali metal ions is intrinsically effective for stabilizing Cu(I)–S bonds by forming ternary sulfides (M–Cu(I)–S, M = Na, K, Rb). The strengthened Cu–S can be well preserved in M–Cu(I)–S during contributing protonation effect thus highly formate. Moreover, also exhibit enhanced electrical conductivity relative Cu2S, favorably promoting kinetics. Accordingly, RbCu7S4 as a representative catalyst achieves Faradaic efficiency 90.4 ± 1.3% at only −0.7 V versus reversible hydrogen electrode (VRHE), high partial current density 272.1 mA cm–2 stable operation over 72 h. This study could provide different series on an industrial scale CO2RR.

Language: Английский

Citations

4
Green, mild, and rapid plasma synthesis of nitrogen/amino-cofunctionalized MWCNTs-supported Pd catalyst in solution for boosting formic acid dehydrogenation DOI

Xiaonan Du,

Fei Gao, Yue Hua

et al.

Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132751 - 132751

Published: Aug. 14, 2024

Language: Английский

Citations

4
Fully Exposed Ru Clusters for the Efficient Multi‐step Toluene Hydrogenation Reaction DOI
Yue Wang, Hancheng Yu, Yurong He

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Liquid organic hydrogen carriers (LOHCs) are attractive platform molecules that play an important role in energy storage and utilization. The multi-step hydrogenation of toluene (TOL) to methylcyclohexane (MCH) has been widely studied the LOCHs systems, due their relatively low toxicity reasonable capacity. Noble metal catalysts such as Ru exhibited good performance reactions, while application is still hindered by high cost specific activity. Therefore, primary challenge lies development noble with both robust activity efficient atomic In this study, a series species ranging from single atoms, fully exposed clusters nanoparticles were fabricated investigate structural evolution TOL reaction. atomically dispersed clusters, composed average 3 exhibit superior catalytic recycle ability hydrogenation. Moreover, it delivers turnover frequency 9850.3 h

Language: Английский

Citations

4
Synthesis of aromatic amides from lignin and its derivatives DOI Creative Commons
Zhuang Ma, Zupeng Chen, Zeli Yuan

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 11, 2025

Benzamides constitute an important class of bulk and fine chemicals as well essential parts many life science molecules. Currently, all these compounds are majorly produced from petrochemical-based feedstocks. Notably the selective aerobic oxidative conversion lignin lignin-derived to primary, secondary, tertiary amides phenols offers potential for a more sustainable synthesis valuable building blocks chemicals, monomers polymers, biologically active molecules, diverse consumer products. Here we present concept "lignin amides" which is demonstrated by one-pot, multi-step oxidation process utilizing molecular oxygen 3d-metal catalyst with highly dispersed stable cobalt species (Co-SACs) supported on nitrogen-doped carbon in water solvent. Moreover, our cobalt-based methodology allows cost-efficient transformation its variety derivates simply using O2 organic amines. Mechanistic investigations control experiments suggest that involves initial dehydrogenation Cα-OH, cleavage Cβ-O C(O)-C bond condensation resulting carboxylic acids Spectroscopic studies indicate formation superoxide (O2●-) specific Co-nitrogen sites anchored mesoporous sheets key success this transformation.

Language: Английский

Citations

0
Potential‐Driven Dynamic Spring‐Effect of Pd─Cu Dual‐Atoms Empowered Stability and Activity for Electrocatalytic Reduction DOI Creative Commons

Pei‐Hua Li,

Yuan‐Fan Yang,

Zong‐Yin Song

et al.

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

Published: April 26, 2025

Abstract Atomic‐level catalysts are extensively applied in heterogeneous catalysis fields. However, it is a general but ineluctable issue that active metal atoms may migrate, aggregate, deactivate, or leach during reaction processes, suppressing their catalytic performances. Designing superior intrinsic‐structural stability of atomic‐level with high activity and revealing dynamic structure evolution vital for wide applications complex reactions harsh conditions. Herein, high‐stable Pd─Cu dual‐atom PdN 3 ─CuN coordination engineered via strong chelation Cu 2+ ‐ions electron pairs from palladium‐source, achieving the highest turnover frequency under lowest overpotential Cr(VI) electrocatalytic reduction detection strong‐acid electrolytes. In situ X‐ray absorption fine spectra reveal “spring‐effect” Cu─Pd Cu─N bonds reversibly stretched potential changes can be recovered at 0.6 V regeneration. The modulated electron‐orbit coupling effect prevents Cu‐atoms aggregating as metallic nanoparticles. dual‐atoms interact two O H 2 CrO 4 , forming stable bridge configurations transferring electrons to promote Cr─O bond dissociation, which prominently decreases energy barriers. This work provides feasible route boost robustness single‐atoms easily affected by conditions sustainable applications.

Language: Английский

Citations

0