Highly active and stable TiO2-supported Au nanoparticles for CO2 reduction

In this work, we study the trans influence of boryl ligands and other commonly used non-boryl ligands in order to search for a more active catalyst than the ruthenium dihydride complex Ru(PNP)(CO)H2 for the hydrogenation of CO2. The theoretical calculation results show that only the B ligands exhibit a stronger trans influence than the hydride ligand and are along increasing order of trans influence as follows: –H < –BBr2 < –BCl2 ≈ –B(OCH)2 < –Bcat < –B(OCH2)2 ≈ –B(OH)2 < –Bpin < –B(NHCH2)2 < –B(OCH3)2 < –B(CH3)2 < –BH2. The computed activation free energy for the direct hydride addition to CO2 and the NBO analysis of the property of the Ru–H bond indicate that the activity of the hydride can be enhanced by the strong trans influence of the B ligands through the change in the Ru–H bond property. The function of the strong trans influence of B ligands is to decrease the d orbital component of Ru in the Ru–H bond. The design of a more active catalyst than the Ru(PNP)(CO)H2 complex is possible.

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A high-performance oxygen evolution catalyst in neutral-pH for sunlight-driven CO2 reduction

Nature Communications ◽

10.1038/s41467-019-12009-8 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 14

Author(s):

Li Qin Zhou ◽

Chen Ling ◽

Hui Zhou ◽

Xiang Wang ◽

Joseph Liao ◽

...

Keyword(s):

Oxygen Evolution ◽

High Performance ◽

Specific Activity ◽

Co2 Reduction ◽

Poor Performance ◽

Electrolysis Cell ◽

Neutral Ph ◽

Highly Active ◽

Order Of Magnitude ◽

Neutral Conditions

Abstract The efficiency of sunlight-driven reduction of carbon dioxide (CO2), a process mimicking the photosynthesis in nature that integrates the light harvester and electrolysis cell to convert CO2 into valuable chemicals, is greatly limited by the sluggish kinetics of oxygen evolution in pH-neutral conditions. Current non-noble metal oxide catalysts developed to drive oxygen evolution in alkaline solution have poor performance in neutral solutions. Here we report a highly active and stable oxygen evolution catalyst in neutral pH, Brownmillerite Sr2GaCoO5, with the specific activity about one order of magnitude higher than that of widely used iridium oxide catalyst. Using Sr2GaCoO5 to catalyze oxygen evolution, the integrated CO2 reduction achieves the average solar-to-CO efficiency of 13.9% with no appreciable performance degradation in 19 h of operation. Our results not only set a record for the efficiency in sunlight-driven CO2 reduction, but open new opportunities towards the realization of practical CO2 reduction systems.

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Formation of lattice-dislocated bismuth nanowires on copper foam for enhanced electrocatalytic CO2 reduction at low overpotential

Energy & Environmental Science ◽

10.1039/c9ee00018f ◽

2019 ◽

Vol 12 (4) ◽

pp. 1334-1340 ◽

Cited By ~ 60

Author(s):

Xiaolong Zhang ◽

Xinghuan Sun ◽

Si-Xuan Guo ◽

Alan M. Bond ◽

Jie Zhang

Keyword(s):

Crystal Lattice ◽

Co2 Reduction ◽

Bismuth Nanowire ◽

Highly Active ◽

Copper Foam ◽

Bismuth Nanowires ◽

Low Overpotential

Twisted bismuth nanowire (BiNW) with abundant crystal lattice dislocations is a highly active electrocatalyst for CO2 reduction to formate at low overpotential.

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La-doped Al2O3 supported Au nanoparticles: highly active and selective catalysts for PROX under PEMFC operation conditions

Chemical Communications ◽

10.1039/c3cc49193e ◽

2014 ◽

Vol 50 (21) ◽

pp. 2721-2724 ◽

Cited By ~ 15

Author(s):

Qingquan Lin ◽

Botao Qiao ◽

Yanqiang Huang ◽

Lin Li ◽

Jian Lin ◽

...

Keyword(s):

High Activity ◽

Au Nanoparticles ◽

Co Adsorption ◽

Operation Conditions ◽

Highly Active ◽

La Doped

LaAlO3-doped γ-Al2O3 supported Au catalysts show high activity and selectivity by strengthening CO adsorption meanwhile significantly decreasing H2 oxidation.

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Highly Active and Selective Electrochemical CO2 Reduction to Formate Enabled By Structural Defects on Converted Bi2O3 Nanotubes

ECS Meeting Abstracts ◽

10.1149/ma2019-02/22/1067 ◽

2019 ◽

Keyword(s):

Co2 Reduction ◽

Structural Defects ◽

Highly Active ◽

Electrochemical Co2 Reduction

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Effect of surface ligands on gold nanocatalysts for CO2 reduction

Chemical Science ◽

10.1039/d0sc05089j ◽

2020 ◽

Vol 11 (45) ◽

pp. 12298-12306

Author(s):

Hongyu Shang ◽

Spencer K. Wallentine ◽

Daniel M. Hofmann ◽

Quansong Zhu ◽

Catherine J. Murphy ◽

...

Keyword(s):

Metal Ions ◽

Au Nanoparticles ◽

Co2 Reduction ◽

Permeable Membrane ◽

Surface Ligands ◽

Minimal Loss ◽

Effect Of Surface

Dodecanethiol on Au nanoparticles significantly enhances selectivity and stability with minimal loss in activity by acting as a CO2-permeable membrane, which blocks the deposition of metal ions that are otherwise responsible for rapid deactivation.

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Highly active catalysts of iron-based materials with Au nanoparticles for soot oxidation

E3S Web of Conferences ◽

10.1051/e3sconf/201913606029 ◽

2019 ◽

Vol 136 ◽

pp. 06029

Author(s):

Chao Wei ◽

Zhenzhen Chen ◽

Chao Hu ◽

Haitao Wang

Keyword(s):

Gold Nanoparticles ◽

Catalytic Activity ◽

Transition Metal ◽

Metal Oxide ◽

Au Nanoparticles ◽

Soot Oxidation ◽

Transition Metal Oxide ◽

Initial Oxidation ◽

Highly Active ◽

Iron Based

Gold nanoparticles supported on transition metal oxide catalysts have been prepared by deposition-precipitation. Their catalytic activity with or without Au doped has been tested for soot oxidation. Au improves the catalytic activity of transition metal oxide for the oxidation of soot particles. Under the catalysis of Au/Co3O4, the initial oxidation temperature of soot is 354 ℃.

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