Continuous-Flow Sunlight-Powered CO2 Methanation Catalyzed by y-AI2O3-Supported Plasmonic Ru Nanorods

Sunlight-Powered Reverse Water Gas Shift Reaction Catalysed by Plasmonic Au/TiO2 Nanocatalysts: Effects of Au Particle Size on the Activity and Selectivity

This study reports the low temperature and low pressure conversion (up to 160 ◦C, p = 3.5 bar) of CO2 and H2 to CO using plasmonic Au/TiO2 nanocatalysts and mildly concentrated artificial sunlight as the sole energy source (up to 13.9 kW·m−2 = 13.9 suns). To distinguish between photothermal and non-thermal contributors, we investigated the...

Comparing the Performance of Supported Ru Nanocatalysts Prepared by Chemical Reduction of RuCl3 and Thermal Decomposition of Ru3(CO)12 in the Sunlight-Powered Sabatier Reaction

The preparation of Ru nanoparticles supported on γ-Al2O3 followed by chemical reduction using RuCl3 as a precursor is demonstrated, and their properties are compared to Ru nanoparticles supported on γ-Al2O3 prepared by impregnation of γ-Al2O3 with Ru3(CO)12 and subsequent thermal decomposition. The Ru nanoparticles resulting from chemical...

Low temperature sunlight‐powered reduction of CO2 to CO using a plasmonic Au/TiO2 nanocatalyst

Sunlight-powered reduction of CO2to fuels and chemicals is apromising strategy to close the carbon loop and facilitate theenergy transition. In this research, we demonstrate that Aunanoparticles supported on TiO2are an efficient plasmoniccatalyst for the sunlight-powered reverse water-gas shift (rWGS)reaction. A maximum CO production rate of429...

Hydrogen production by Photocatalytic Degradation of Organic Substances Using Iron-Containing Metal-Ceramic Composites Under UV and Visible-Light Irradiation

Metal-ceramic composites with ceramic matrix modified with semiconductors (SiN-SiC and TiN) were synthetized by Selfpropagating high-temperature synthesis (SHS) technology. Xray diffraction (XRD) analysis was used to determine the phase composition of the composites based on the nitrides of silicon, titanium, vanadium, and boron. Surface...

Metal-Ceramic Composites for Photocatalytic Oxidation of Diclofenac in Aqueous Solution

Photocatalytic activity of metal-ceramic composites synthesized by self-propagating high-temperature synthesis (SHS) is investigated in the processes of degradation of diclofenac (DCF). Optical properties of the composites were studied, and the band gaps of ceramic matrix semiconducting components were calculated from the absorbance spectra. The...

Collective photothermal effect of Al2O3-supported spheroidal plasmonic Ru nanoparticle catalysts in the sunlight-powered Sabatier reaction

Suzuki-Miyaura Cross-Coupling Using Plasmonic Pd-Decorated Au Nanorods as Catalyst: A Study on the Contribution of Laser Illumination

The interaction between plasmonic metal catalysts and visible light can be exploited to increase their catalytic activity. This activity increase results from the generation of hot charge carriers or hot surfaces, or a combination of both. We have studied the light-induced Suzuki-Miyaura cross-coupling reaction of bromobenzene and m-tolylboronic...

Sunlight-Fueled, Low-Temperature Ru-Catalyzed Conversion of CO2 and H2 to CH4 with a High Photon-to-Methane Efficiency

Methane, which has a high energy storage density and is safely stored and transported in our existing infrastructure, can be produced through conversion of the undesired energy carrier H2 with CO2. Methane production with standard transition-metal catalysts requires high-temperature activation (300−500 °C). Alternatively, semiconductor metal...