Synthetic application of gold complexes on magnetic supports

Abstract

Gold nanocatalysts (GNCs) have recently become a hot topic and are widely used in chemistry. Between heterogeneous and homogeneous catalyses, two main types of catalyses, heterogeneous catalysts have gained importance because of their ease of separation from the mixture with low contamination of the products. Currently, nano‐heterogeneous catalysis is the main subject in a wide range of research studies because nanostructures have unique abilities that are found only at the nano‐level of the molecular world. This review selectively discusses the magnetic phenomena of heterogeneous GNCs, in which their inherent magnetic property provides many advantages over the nonmagnetic counterparts and also highlights the synthesis, development, and recyclability of various types of magnetic GNCs in well‐known organic reactions. These insights are useful for researchers working on the future of magnetic‐type gold nanocatalysis to enhance organic transformations, in both rate and yield.

Au NPs fabricated on biguanidine-modified Zr-UiO-66 MOFs: a competent reusable heterogeneous nanocatalyst in the green synthesis of propargylamines

“…3,4 Since then, they have been used extensively in diverse arenas such as photocatalysis in UV and visible light conditions towards various transformations, oxidation, reduction, esterification and hydrogenation of different substrates, catalytic degradation of harmful organic dyes and chemicals, organic coupling reactions, etc. 5–10 Recently, Au NPs have also been used in several biomedical applications. 11–14…”

γ‐Fe2O3@HAp@PBABMD@Cu magnetic nanoparticles: Efficient, green, and recyclable novel nanocatalyst for the synthesis of densely functionalized pyrrole‐pyrido[2,3‐d]pyrimidine hybrids

“…1 Also, catalysis is becoming a strategic field of science because it represents a new way to confront the challenges of energy and sustainability. 2,3 Furthermore, one of the key strategies in the efficient green catalysts field is the design and development of new solids for heterogeneous catalytic processes that meet both efficiency and selectivity criteria while permitting recovery, reactivation, and reuse during numerous cycles, without mass losses. 4,5,6 Among the catalysts or heterogeneous supports, magnetic iron oxide (Fe 3 O 4 and γ-Fe 2 O 3 ) (NPs) have attracted much interest due to their unique attributes, such as superparamagnetic, surface-to-volume ratio, greater surface area, shapes, sizes, sustainable nature, inexpensive, nontoxicity, environmentally, and simple separation methodology.…”

“…Green chemistry is a concept that has been getting great attention in recent years by chemists and researchers 1 . Also, catalysis is becoming a strategic field of science because it represents a new way to confront the challenges of energy and sustainability 2,3 . Furthermore, one of the key strategies in the efficient green catalysts field is the design and development of new solids for heterogeneous catalytic processes that meet both efficiency and selectivity criteria while permitting recovery, reactivation, and reuse during numerous cycles, without mass losses 4,5,6 .…”

Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

“…To solve this problem, magnetic nanoadsorbents are used. One of the most widely used adsorbents is magnetic nanocomposites [25][26][27]. Magnetic nanocomposites due to their good magnetic property, high area surface and adsorption capacity have attracted the many researchers attention.…”