Efficient bifunctional hydrogen and oxygen evolution reaction electrocatalyst based on the NU-1000/CuCo2S4 heterojunction

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 48(39), P. 14749 - 14762

Published: Jan. 20, 2023

Language: Английский

---

Vanadium- and manganese-based metal-organic frameworks for potential environmental and catalysis applications

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216231 - 216231

Published: Sept. 25, 2024

Language: Английский

---

Recent advanced strategies for bimetallenes toward electrocatalytic energy conversion reactions

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(23), P. 3129 - 3137

Published: Jan. 1, 2024

Designing low-dimensional nanomaterials is vital to address the energy and environmental crisis by means of electrocatalytic conversion reactions. Bimetallenes, as an emerging class 2D materials, present promise for By leveraging atomically thin layers, bimetallenes unsaturated surface coordination, high specific area conductivity, which are all indispensable features heterogeneous electrochemical However, intrinsic activity stability needs be improved further bimetallene electrocatalysts, due higher demands practical applications. Recently, many strategies have been developed optimize chemical or electronic structure accommodate transfer reactants, adsorption desorption intermediates, dissociation products. Considering that most such work focuses on adjusting structure, this review offers in-depth insight into recent representative optimizing mainly including alloying, strain effects, ligand defects heteroatom doping. Moreover, summarizing performance optimized using various strategies, we provide a understand structure-property relationships. In addition, future prospects challenges discussed development electrocatalysts.

Language: Английский

---

Water-Stable Pillared Three-Dimensional Zn–V Bimetal–Organic Framework for Promoted Electrocatalytic Urea Oxidation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(12), P. 5642 - 5651

Published: March 12, 2024

Urea oxidation reaction (UOR) is one of the potential routes in which urea-rich wastewater used as a source energy for hydrogen production. Metal–organic frameworks (MOFs) have promising applications electrocatalytic processes, although there are still challenges identifying MOFs' molecular regulation and obtaining practical catalytic systems. The current study sought to synthesize [Zn6(IDC)4(OH)2(Hprz)2]n (Zn-MOF) with three symmetrically independent Zn(II) cations connected via linear N-donor piperazine (Hprz), rigid planar imidazole-4,5-dicarboxylate (IDC3–), −OH ligands, revealing 3,4T1 topology. optimized noble-metal-free Zn0.33V0.66-MOF/NF electrocatalysts show higher robustness performance compared those parent Zn monometallic MOF/NF electrode other bimetallic MOFs different Zn–V molar ratios. low 1.42 V (vs RHE) at 50 mA cm–2 1.0 M KOH 0.33 urea required by developed Zn0.33V0.66-MOF makes its application UOR more feasible. availability exposed active sites, ion diffusion path, conductivity result from distinctive configuration synthesized electrocatalyst, highly stable capable synergistic effects, consequently enhancing desired reaction. research contributes introducing practical, cost-effective, sustainable solution decompose produce hydrogen.

Language: Английский

---

Postsynthetic Modification of Amine-Functionalized MIL-101(Cr) Metal–Organic Frameworks with an EDTA–Zn(II) Complex as an Effective Heterogeneous Catalyst for Hantzsch Synthesis of Polyhydroquinolines

ACS Omega, Journal Year: 2024, Volume and Issue: 9(26), P. 28114 - 28128

Published: June 21, 2024

The present work aims at preparing the EDTA–Zn(II) complex─supported on amine-functionalized MIL-101(Cr) MOF─as a new and effective heterogenized catalyst. optimization of hydrothermal process shows that 120 °C is best condition to grow MIL-101(Cr)–NH2 MOF crystals. Moreover, regarding use postsynthetic modification (PSM) method, hexadentate EDTA was grafted this support via simple aminolysis before further coordinating it with Zn ions create corresponding Zn(II) catalytic complex. activity compound then investigated in context one-pot synthesis polyhydroquinolines. This approach has number advantages including following: solvent not hazardous, applying porous catalyst inexpensive, secure, recyclable; rapid reaction times, high levels efficiency, simplicity separation. Accordingly, question can be given label "green chemistry".

Language: Английский

---

Copper-Based Bio-MOF/GO with Lewis Basic Sites for CO₂ Fixation into Cyclic Carbonates and C–C Bond-Forming Reactions

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(27), P. 12667 - 12680

Published: June 25, 2024

Several measures, including crude oil recovery improvement and carbon dioxide (CO2) conversion into valuable chemicals, have been considered to decrease the greenhouse effect ensure a sustainable low-carbon future. The Knoevenagel condensation CO2 fixation introduced as two principal solutions these challenges. In present study for first time, bio-metal–organic frameworks (MOF)(Cu)/graphene oxide (GO) nanocomposites used catalytic agents reactions. view of attendance amine groups, biological MOFs with NH2 functional groups Lewis base sites protruding on channels' internal surface were used. bio-MOF(Cu)/20%GO performs efficaciously in fixation, leading more than 99.9% TON = 525 via solvent-free reaction under 1 bar atmosphere. It has shown that are highly due basic sites, i.e., NH2, pyrimidine, C═O groups. Besides, active exert synergistic effects render bio-MOF(Cu)/10%GO nanostructures efficient catalysts, significantly accelerating reactions aldehydes malononitrile substrates, thanks high TOF (1327 h–1) acceptable reusability. Bio-MOFs can be stabilized using GO oxygen-containing contribute substitutes, an expeditious speed facilitating substrate absorption.

Language: Английский

---

Photo-assisted charging of heterostructured NiCo2S4@NiCo-LDH composite electrode with remarkable photoelectronic memory effect for high-performance asymmetric supercapacitor

Energy Conversion and Management, Journal Year: 2024, Volume and Issue: 315, P. 118769 - 118769

Published: July 10, 2024

Language: Английский

---

Multi-walled carbon nanotubes with embedded nickel sulphide as an effective electrocatalyst for Bi-functional water splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 67, P. 373 - 380

Published: April 22, 2024

Language: Английский

---

Integration of Open Metal Sites in an Amino-Functionalized Sm(III)–Organic Framework toward Enhanced Third-Order Nonlinear Optical Property

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(39), P. 18173 - 18181

Published: Sept. 13, 2024

A variety of new inorganic and organic materials have emerged to advance laser technologies optical engineering. rational design approach can contribute significantly fabricating nonlinear optically active metal-organic frameworks (MOFs) by considering the underlying structure-property linkage. Here, it has been embarked on a study novel samarium(III) MOF, ([Sm

Language: Английский

---

Hydrothermally fabricated MoTe2/rGO as a proficient electrocatalyst for robust oxygen evolution reaction

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: 148, P. 111364 - 111364

Published: July 1, 2024

Language: Английский

---