Enhancing Compatibility of Two‐Step Tandem Catalytic Nitrate Reduction to Ammonia Over P‐Cu/Co(OH)₂

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) is a promising approach to realize ammonia generation and wastewater treatment. However, the transformation from NO − NH involves multiple proton‐coupled electron transfer processes by‐products 2 , H etc.), making high selectivity challenge. Herein, two‐phase nanoflower P‐Cu/Co(OH) electrocatalyst consisting of P‐Cu clusters P‐Co(OH) nanosheets designed match two‐step tandem process ) more compatible, avoiding excessive accumulation optimizing whole reaction. Focusing on initial 2e process, inhibited * desorption Cu sites in gives rise appropriate released electrolyte. Subsequently, exhibits superior capacity for trapping transforming desorbed during latter 6e due thermodynamic advantage contributions active hydrogen. In 1 m KOH + 0.1 leads yield rate 42.63 mg h cm Faradaic efficiency 97.04% at −0.4 V versus reversible hydrogen electrode. Such well‐matched achieves remarkable synthesis performance perspective catalytic reaction, offering novel guideline design RR electrocatalysts.

Language: Английский

---

Interface Engineering on Heterostructural Nanosheets for Efficient Electrocatalytic-Paired Upcycling of Waste Plastics and Nitrate

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 18095 - 18106

Published: Nov. 22, 2024

Language: Английский

---

Theoretical Screening of Efficient TM/GaN Single-Atom Catalysts for Electroreduction of Nitrate to Ammonia

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Language: Английский

---

High-Intensity Interfacial Electric Fields between Co-catalysts and Semiconductor: A Determinant Factor in Enhancing Photocatalytic Hydrogen Production

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125265 - 125265

Published: March 1, 2025

Language: Английский

---

In situ/Operando Investigation for Heterogeneous Electro-Catalysts: From Model Catalysts to State-of-the-Art Catalysts

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(9), P. 4414 - 4440

Published: Aug. 17, 2024

Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer real-time insights into catalyst behavior under reaction conditions, enabling a deeper understanding of structure–performance relationships and, therefore, guiding the design optimization electro-catalysts. This review discusses common situ/operando techniques, highlights their applications model catalysts, single-atom single-crystal further explores combinational analysis to study complex nanocatalysts. Finally, we provide suggestions perspectives on development advance field electrochemical catalysis.

Language: Английский

---

Designed of dual direct band gap graphdiyne/Co2VO4 S-scheme heterojunction: Enhance the bonding stability of Co active sites to promote photocatalytic hydrogen evolution

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157514 - 157514

Published: Nov. 1, 2024

Language: Английский

---

Advanced mechanisms and applications of microwave-assisted synthesis of carbon-based materials: a brief review

Nanoscale Advances, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

The interaction of microwave radiation with carbon-based materials induces rapid, instantaneous heating. When combined the plasma excitation capabilities microwaves, this property presents novel avenues for synthesizing that require high temperatures and catalytic activity. This review investigates response to radiation, analyzes dielectric loss mechanism responsible heat generation, details mechanisms employed in synthesis processing materials. Furthermore, structure reactors is discussed, followed by a discussion their diverse applications both laboratory industrial settings. Lastly, addresses challenges associated practical implementation technology explores future development prospects, particular focus on application microwaves material synthesis.

Language: Английский

---

Graphdiyne-based catalysts for efficient hydrogen energy conversion

Published: Jan. 1, 2025

Language: Английский

---

Defect‐Enriched Cobalt‐Based Coordination Polymers for Selective and Efficient Nitrate Electroreduction to Ammonia

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

Published: March 3, 2025

Abstract Electrocatalytic nitrate reduction to ammonia (NRA) offers an arousing route for converting widespread pollutant under mild conditions. Among other NRA catalysts, single‐atom catalyst (SAC) has emerged as a promising candidate due its numerous advantages such maximum metal‐atom‐utilization efficiency, homogeneous and tailorable active sites, which still encounters formidable challenge accelerate the kinetics simultaneously suppress competitive hydrogen evolution reaction, especially when operated in electrolytes with low concentration nitrate. Herein, general strategy is reported prepare defect‐enriched coordination polymer catalysts featuring well‐defined unsaturated metal can exhibit exceptional performance even at surpass SACs toward catalysis. Taking cobalt (Co) example, Co‐based polymers (d‐CoCP) counterpart CoCP without defects are investigated proof‐of‐concept study. Both experimental theoretical results elucidate that elaborately‐engineered d‐CoCP markedly decrease thermodynamic barrier reducing *NO *HNO rate‐limiting step along pathway, thus accelerating adsorption of promoting kinetics.

Language: Английский

---

Electronic perturbation of Pd single-atom catalysts on graphdiyne derivatives toward effective electrocatalytic nitrate reduction

ChemPhysMater, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

---