Cu/M:ZnO (M = Mg, Al, Cu) colloidal nanocatalysts for the solution hydrogenation of carbon dioxide to methanol

Abstract

Doped-ZnO nanoparticles, capped with dioctylphosphinate ligands, are synthesised by the controlled hydrolysis of a mixture of organometallic precursors.

Facile one-pot synthesis of CuCN by pulsed laser ablation in nitrile solvents and mechanistic studies using quantum chemical calculations

“…Ablation of the Cu plate at 355, 532, and 1064 nm in propionitrile and butyronitrile led to the formation of Cu NPs. The peaks at 43.2° and 50.4° were consistent with face-centered cubic copper NPs (JCPDS #01-085-1326) 21 . These peaks coincided with the diffraction of the (111) and (200) planes, respectively.…”

Secured Nanosynthesis–Deposition Aerosol Process for Composite Thin Films Incorporating Highly Dispersed Nanoparticles

“…This approach involves neither a purification step, nor corrosive byproducts, it operates at low temperature, is fast and ensures a quantitative yield of well‐defined NPs. [ 37 , 38 , 39 , 40 ] The formation of ZnO NPs by this approach is highly appealing as ZnO NPs present wide technological applications due to their unique properties. These include electro‐optical properties, [ 41 , 42 ] which can be used in devices such as ultraviolet (UV) light‐emitting diodes (LEDs), [ 42 , 43 ] blue luminescent devices or UV lasers [ 44 ] ; photo(electro)catalytic water treatment, [ 45 , 46 , 47 ] antibacterial agents, [ 48 , 49 ] solar cells, [ 50 , 51 , 52 , 53 , 54 ] and others.…”

“…[ 17 , 18 , 19 , 20 ] Although some publications report low toxicity for ZnO NPs, [ 21 , 22 ] the insecure handling of NPs before any further process implementations comprising the direct application, is currently encountered in classical processes like chemical precipitation, sol‐gel, solvothermal/hydrothermal methods, microemulsion and synthesis from organometallics precursors. [ 23 , 24 , 25 , 26 , 27 , 28 ] The development of processes that avoid contact with NPs remains therefore highly desirable.…”

Effect of the Synthesis Method on Physicochemical Properties and Performance of Cu/ZnO/Nb2O5 Catalysts for CO2 Hydrogenation to Methanol

“…4,5 The properties of these materials can be modulated using promoters 6,7 and applying different synthesis methods. 8,9 Promoters, such as Fe, 10 Ga, 10,11 Mg, 12 Al, 12 and In, 13 can increase the dispersion of Cu, maximizing interface sites and the basicity, raising the CO 2 adsorption, while the synthesis method influences the morphology and structure of the catalysts, 14−16 allowing the optimization of the methanol generation.…”

“…In these processes, a wide variety of value-added chemicals can be obtained. − In particular, methanol is an interesting product of catalytic CO 2 hydrogenation, owing to its broad range of applications. Previous studies showed that Cu/ZnO-based materials are promising for large-scale methanol production from CO 2 and H 2 . , The properties of these materials can be modulated using promoters , and applying different synthesis methods. , Promoters, such as Fe, Ga, , Mg, Al, and In, can increase the dispersion of Cu, maximizing interface sites and the basicity, raising the CO 2 adsorption, while the synthesis method influences the morphology and structure of the catalysts, − allowing the optimization of the methanol generation.…”