Advancements in Pd-Based Supported Porous Nanocatalysts for the C-C Cross-Coupling Reactions DOI Open Access
Debabrata Chakraborty, Asim Bhaumik

Catalysts, Journal Year: 2024, Volume and Issue: 15(1), P. 16 - 16

Published: Dec. 28, 2024

Palladium (Pd) is a 4d transition metal with electronic configuration [Kr] 4d10 5s0, and it one of the most widely studied metals in periodic table due to its versatile catalytic role organic synthesis. The choice ligands that can coordinate Pd sites plays crucial progress reaction. Due coexistence multiple oxidation states (Pd(0)/Pd(II)), active catalysts participate various stages coupling Pd-catalyzed C-C reactions proceed through four steps: (1) oxidative addition reactant site, (2) transmetallation, (3) rearrangements ligand centers (4) reductive elimination products. For heterogeneous nanocatalysts, are often strongly bound (chelated) solid catalyst surfaces. In this review, we have highlighted advancements made nanocatalysts an emphasis on types different classes porous solids, which could ligate via strong covalent bonds. high specific surface areas small these provide larger number thus facilitate Mechanistic aspects cross-coupling discussed context structure–reactivity relationship.

Language: Английский

Defect anchoring of atomically dispersed Pd on nitrogen-doped holey carbon nanotube for catalytic hydrogenation of nitroarenes DOI
Jie Huang, Xiaozhi Li,

Rui-Hong Xie

et al.

Applied Surface Science, Journal Year: 2023, Volume and Issue: 615, P. 156344 - 156344

Published: Jan. 6, 2023

Language: Английский

Citations

49
Palladium Nanoparticles Supported on Porous Silica Materials as Heterogeneous Catalysts of C−C Coupling and Cross‐Coupling Reactions DOI
Ágnes Mastalir, Árpàd Molnár

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(19)

Published: July 27, 2023

Abstract Noble metal nanoparticles supported on porous silica materials represent an important class of heterogeneous catalysts. Recently, a remarkable progress has been made concerning the synthesis, characterization, and catalytic application noble immobilized zeolites mesoporous silica‐based materials. Various synthesis strategies have developed, including ligand‐assisted precursors, multistep procedures, post‐synthetic modifications, magnetic particles. Emphasis laid introduction green based utilization environmentally friendly solvents, efficient stabilizing agents, non‐toxic reagents, mild reaction conditions. Palladium long recognized as most catalysts in wide range organic transformations, Heck, Suzuki, Stille, Sonogashira reactions. Although these transformations extensively investigated homogeneous systems, catalysts, silica‐supported Pd 0 nanoparticles, gained increasing importance. This may be due to easy handling recovery latter which facilitates their repeated applications. The aim this review is provide outlook current research achieved development novel synthetic affording highly dispersed materials, proved recyclable C−C coupling cross‐coupling focus results published last six years with handful examples previous years.

Language: Английский

Citations

23
In situ and bio-green synthesis of silver nanoparticles immobilized on zeolite as a recyclable catalyst for the degradation of OPDs DOI Creative Commons

Fujiang Zhou,

Danfeng He,

Guojian Ren

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 11, 2024

Abstract In this study, silver nanoparticles (Ag-NPs) were synthesized using a green and biologically inspired approach by utilizing reducing compounds from Thyme plant leaves . Zeolite was used to immobilize the Ag-NPs (Ag@Z). The modified served as catalyst for reduction reaction of various organic pollutant dyes (OPDs) including 4-nitrophenol (4-NP), 4-nitroaniline (4-NA), methylene blue (MB), methyl orange (MO) with sodium borohydride. degradation OPDs monitored measuring changes in their maximum absorption wavelength intensity. A thorough examination multiple parameters (catalyst, borohydride dosage, yield degradation, time) carried out identify optimized conditions OPDs. results showed that Ag@Z achieved an efficiency over 93% less than 10 min recoverability reusability examined, revealing partial loss after four recovery stages. Structural analysis XRD, SEM, TEM techniques confirmed characteristics morphology catalyst.

Language: Английский

Citations

11
Indium nanocubes based recyclable fluorescent chemosensor for sustainable environmental monitoring: pH-induced fluorescence transition and selective detection of Pd(II) ions DOI
Pooja Sharma, Sudhanshu Naithani, Vikas Yadav

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 920, P. 171043 - 171043

Published: Feb. 16, 2024

Language: Английский

Citations

9
Facile synthesis of pure silicon zeolite-confined silver nanoparticles and their catalytic activity for the reduction of 4-nitrophenol and methylene blue DOI
Sheng Liu, Yujuan Guo, Shunmin Yi

et al.

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 307, P. 122727 - 122727

Published: Nov. 24, 2022

Language: Английский

Citations

37
Fluorescent and chromogenic organic probes to detect group 10 metal ions: design strategies and sensing applications DOI

Nidhi Goswami,

Sudhanshu Naithani, Jimmy Mangalam

et al.

Dalton Transactions, Journal Year: 2023, Volume and Issue: 52(41), P. 14704 - 14732

Published: Jan. 1, 2023

Group 10 metals including Ni, Pd and Pt have been extensively applied in various essential aspects of human social life, material science, industrial manufactures, medicines biology. The ionic forms these are involved several biologically important processes due to their strong binding capability towards different biomolecules. However, the mishandling or overuse such has linked serious contamination our ecological system, more specifically soil water bodies with acute consequences. Therefore, detection group metal ions biological as well environmental samples is huge significance from health point view. Related this, considerable efforts underway develop adequately efficient facile methods achieve selective detection. Optical sensing gained increasing attention researchers, particularly settings. Innovatively designed optical probes (fluorescent colorimetric) usually comprised three basic components: an explicitly tailored receptor unit, a signalling unit clearly defined reporter unit. This review deals recent progress design fabrication fluorescent colorimetric organic sensors for (Ni(II), Pd(II) Pt(II)), general sensors.

Language: Английский

Citations

9
Hierarchically structured and highly active palladium-loaded Al-MIL-53-linked hybrid periodic mesoporous silica catalysts for Suzuki-Miyaura cross-coupling reaction DOI
Yucang Liang, Xin Ning, Yanzhong Zhen

et al.

Microporous and Mesoporous Materials, Journal Year: 2022, Volume and Issue: 346, P. 112329 - 112329

Published: Nov. 5, 2022

Language: Английский

Citations

13
Palladium-loaded ceramic membrane-catalyzed flow-through Suzuki–Miyaura reaction DOI

Shuangqiang Wang,

Jinliang Chen, Fei Zhang

et al.

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(43), P. 6568 - 6571

Published: Jan. 1, 2023

A general Pd-loaded ceramic membrane catalyzed Suzuki-Miyaura reaction in a flow-through reactor is reported for the first time. Versatile (hetero)aryl bromides and chlorides proceeded well with an array of boronic acids. The consistently high activity catalytic eight cycles has proved its good stability recyclability. Synthesis drug molecules further demonstrated that protocol powerful comprehensive alternative to traditional cross-coupling.

Language: Английский

Citations

5
Suzuki‐Miyaura Cross‐Coupling Reaction Using Palladium Catalysts Supported on Phosphine Periodic Mesoporous Organosilica DOI Open Access

Kosuke Iizuka,

Yoshifumi Maegawa, Yoshihiro Shimoyama

et al.

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 30(8)

Published: Nov. 29, 2023

Abstract Phosphine periodic mesoporous organosilicas (R‐P‐PMO‐TMS: R=Ph, t Bu), which possess electron‐donating alkyl substituents on the phosphorus atom, were synthesized using bifunctional compounds with alkoxysilyl‐ and phosphino groups, bis[3‐(triethoxysilyl)propyl]phenylphosphine borane ( 1 a ) bis[3‐(triethoxysilyl)propyl]‐ tert ‐butylphosphine b ). Immobilization of Pd(0) species was performed to give R‐P‐Pd‐PMO‐TMS: R=Ph 2 ), Bu 3 respectively. The immobilized applicable as catalysts for Suzuki‐Miyaura cross‐coupling reactions aryl chlorides phenylboronic acid. It revealed that bearing more groups exhibited higher catalytic activity. Various functional including both electron withdrawing donating compatible in system. recyclability examined support its moderate utility recycle use.

Language: Английский

Citations

4
Composite molecular sieve ZSM-5/MCM-48 based impregnation modification for efficient adsorption of CO2 DOI

Xuecong Ma,

Linlin Geng,

Yu Li

et al.

NANO, Journal Year: 2024, Volume and Issue: 19(03)

Published: March 1, 2024

Micro/mesoporous materials are low-cost functional with the potential for CO 2 adsorption. Modifying micro/mesoporous is significant enhancing adsorption and their high-value utilization. Herein, material of composite molecular sieve ZSM-5/MCM-48 (ZM) was synthesized by a two-step crystallization method using cetyltrimethylammonium bromide as template, tetraethyl orthosilicate silicon source ZSM-5 seed part aluminum source. Tetraethylenepentamine (TEPA) polyethyleneimine (PEI) were used impregnation modifiers to modify ZM amine groups. The results showed that increase loadings, both ZM-T60 (Impregnated TEPA) ZM-P60 PEI) functionalized adsorbents exhibited best capacities [Formula: see text] at 60, respectively, when loading sample 60%. kinetic analysis chemisorption-dominated process accompanied physical After 10 adsorption/desorption cycles, capacity decreased 8.7% 2.6%, respectively. This work demonstrates modification achieve efficient has practical application significance.

Language: Английский

Citations

1