Heterogeneous selective oxidation over supported metal catalysts: From nanoparticles to single atoms

Single atom catalyst-mediated generation of reactive species in water treatment

“…Examples include water splitting, hydrogenation reactions, reduction of carbon dioxide, oxidation of carbon monoxide, electrochemical reactions and photocatalytical reactions. [79][80][81][82][83] Many reviews on SACs have been written concerning their synthesis, characterization methods, and their activities in many applications. 71,72,84 The synthetic methods include solvothermal synthesis, pyrolysis, chemical vapor deposition (CVD) and atomic layer deposition (ALD).…”

Recent Advancements in the Preparation and Application of Copper Single-Atom Catalysts

“…In addition, it is observed that a higher fraction of surface atoms is present on smaller metal particles than that of larger metal particles, which has its impact not only on the proportion of catalytically active atoms of metal but also on selectivity. Therefore, increasing the dispersion of catalysts can considerably enhance the usage of active compounds and contribute to the development of sustainable catalytic technology. − Among them, copper SACs (Cu SACs) have been widely investigated for an extensive range of electrocatalytic applications, , such as carbon dioxide reduction reaction (CO 2 RR), oxygen reductin reaction (ORR), nitrogen reduction reaction (NRR), photocatalytic reactions, biotherapeutic applications, hydrogenation, environmental catalysis, coupling reactions, and others. The electrochemical processes that are driven by renewable electricity convert universal feedstocks (such as carbon dioxide, water, and nitrogen) into fuels as well as value-added chemicals (including ammonia, hydrogen, and hydrocarbons) via the electrochemical processes of water-splitting, CO 2 electroreduction, and N 2 electroreduction.…”

Iridium Nanoparticles on NiO as Heterogeneous Catalysts for Acceptorless Dehydrogenation of Primary Alcohols with Tunable Product Selectivity

“…From academic and industrial viewpoints, selective oxidation of primary alcohols to corresponding aldehydes or carboxylic acids has emerged as a very important transformation in organic synthesis 1,2 Traditional methods of oxidation require either a large amount or stoichiometric quantities of heavy metal oxidants 3,4 or addition of a hydrogen acceptor reagent. 5−8 These conventional methods not only display poor atom efficiency but also produce a large amount of toxic inorganic wastes and are thus not desirable from both economical and ecological perspectives.…”

“…0.25 mm) fitted with an FID and with ndodecane as the internal standard. 1 H and 13 C NMR analyses of products were performed on a Bruker AVANCE III HD-500 MHz spectrometer. 1 H NMR spectra of crude catalytic products were recorded in a Bruker India Scientific-Avance Neo 600 MHz spectrometer.…”

“…From academic and industrial viewpoints, selective oxidation of primary alcohols to corresponding aldehydes or carboxylic acids has emerged as a very important transformation in organic synthesis , Traditional methods of oxidation require either a large amount or stoichiometric quantities of heavy metal oxidants , or addition of a hydrogen acceptor reagent. − These conventional methods not only display poor atom efficiency but also produce a large amount of toxic inorganic wastes and are thus not desirable from both economical and ecological perspectives. Recently, with the growing demand for green and sustainable chemistry, an alternative atom-economical method has emerged in the literature that directly converts primary alcohols to corresponding aldehydes or carboxylic acids along with the concomitant generation of molecular hydrogen without the need for an external oxidant or acceptor. − This oxidant-free method, known as acceptorless dehydrogenation (AD), has received unprecedented recent focus from the hydrogen economy perspective as liquid alcohols, particularly those obtained from biomasses, can be used as liquid hydrogen storage materials and can be transported using the existing liquid fuel infrastructure and, thus, have the potential to resolve issues related to hydrogen storage and transportations. , …”