scholarly journals Surface plasmon-driven catalytic reactions on a patterned Co3O4/Au inverse catalyst

RSC Advances ◽  
2017 ◽  
Vol 7 (88) ◽  
pp. 56073-56080 ◽  
Author(s):  
Si Woo Lee ◽  
Changhwan Lee ◽  
Kalyan C. Goddeti ◽  
Sun Mi Kim ◽  
Jeong Young Park
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Surface Plasmon ◽  
Catalytic Reactions ◽  
Hot Carriers ◽  
Inverse Catalyst

Hot carriers generated from LSPR excitation of Au can transfer to Co3O4, thus enhancing the catalytic activity for CO oxidation.

The surface plasmon-induced hot carrier effect on the catalytic activity of CO oxidation on a Cu2O/hexoctahedral Au inverse catalyst

Nanoscale ◽  
2018 ◽  
Vol 10 (23) ◽  
pp. 10835-10843 ◽  
Author(s):  
Si Woo Lee ◽  
Jong Wook Hong ◽  
Hyunhwa Lee ◽  
Dae Han Wi ◽  
Sun Mi Kim ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Surface Plasmon ◽  
Photon Absorption ◽  
Energetic Electrons ◽  
Hot Carrier ◽  
Carrier Effect ◽  
Hot Carrier Effect ◽  
Inverse Catalyst

The catalytic activity was enhanced when energetic electrons, generated from photon absorption on the HOH Au metal, were transferred to the reactive Cu2O.

Hot plasmonic electron-driven catalytic reactions on patterned metal–insulator–metal nanostructures

Nanoscale ◽  
2017 ◽  
Vol 9 (32) ◽  
pp. 11667-11677 ◽  
Author(s):  
Sun Mi Kim ◽  
Changhwan Lee ◽  
Kalyan C. Goddeti ◽  
Jeong Young Park
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Catalytic Reactions ◽  
Light Irradiation ◽  
Metal Nanostructures ◽  
Two Dimensional ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
2D Arrays

We fabricated two-dimensional (2D) arrays of metal–insulator–metal (MIM) plasmonic nanoislands designed to efficiently shuttle hot plasmonic electrons. These MIM nanostructures exhibit higher catalytic activity under light irradiation, revealing a significant impact on the catalytic activity for CO oxidation.

scholarly journals CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 131 ◽  
Author(s):  
Rola Mohammad Al Soubaihi ◽  
Khaled Mohammad Saoud ◽  
Myo Tay Zar Myint ◽  
Mats A. Göthelid ◽  
Joydeep Dutta
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Active Sites ◽  
Bond Activation ◽  
Dissociative Adsorption ◽  
High Catalytic Activity ◽  
Good Catalytic Activity ◽  
Pretreatment Conditions ◽  
Oxidation Efficiency

Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the catalysts continue to exhibit high catalytic activity (CO conversion remains at 100%) during the extinction even at temperatures lower than Tig. The catalyst was characterized using BET, TEM, XPS, TGA-DSC, and FTIR. In this work, the influence of pretreatment conditions and stability of the active sites on the catalytic activity and hysteresis is presented. The CO oxidation on the Pd/SiO2 catalyst has been attributed to the dissociative adsorption of molecular oxygen and the activation of the C-O bond, followed by diffusion of adsorbates at Tig to form CO2. Whereas, the hysteresis has been explained by the enhanced stability of the active site caused by thermal effects, pretreatment conditions, Pd-SiO2 support interaction, and PdO formation and decomposition.

scholarly journals On the Effects of Doping on the Catalytic Performance of (La,Sr)CoO3. A DFT Study of CO Oxidation

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 312 ◽  
Author(s):  
Antonella Glisenti ◽  
Andrea Vittadini
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Formation Energy ◽  
Oxygen Vacancies ◽  
Catalytic Performance ◽  
Energy Profiles ◽  
High Concentrations ◽  
3D Impurities

The effects of modifying the composition of LaCoO3 on the catalytic activity are predicted by density functional calculations. Partially replacing La by Sr ions has benefical effects, causing a lowering of the formation energy of O vacancies. In contrast to that, doping at the Co site is less effective, as only 3d impurities heavier than Co are able to stabilize vacancies at high concentrations. The comparison of the energy profiles for CO oxidation of undoped and of Ni-, Cu-m and Zn-doped (La,Sr)CoO3(100) surface shows that Cu is most effective. However, the effects are less spectacular than in the SrTiO3 case, due to the different energetics for the formation of oxygen vacancies in the two hosts.

CO Oxidation on Inverse CeOx/Cu(111) Catalysts: High Catalytic Activity and Ceria-Promoted Dissociation of O2

2011 ◽  
Vol 133 (10) ◽  
pp. 3444-3451 ◽  
Author(s):  
Fan Yang ◽  
Jesús Graciani ◽  
Jaime Evans ◽  
Ping Liu ◽  
Jan Hrbek ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
High Catalytic Activity

Effect of Impurity and Pretreatment Conditions on the Catalytic Activity of Au Powder for CO Oxidation

2004 ◽  
Vol 97 (3/4) ◽  
pp. 203-208 ◽  
Author(s):  
Yasuo Iizuka ◽  
Aya Kawamoto ◽  
Kazuhiro Akita ◽  
Masakazu Daté ◽  
Susumu Tsubota ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Pretreatment Conditions

scholarly journals Steps and catalytic reactions: CO oxidation with preadsorbed O on Rh(553)

2021 ◽  
pp. 121928
Author(s):  
Chu Zhang ◽  
Baochang Wang ◽  
Anders Hellman ◽  
Mikhail Shipilin ◽  
Andreas Schaefer ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Reactions

The anisotropic broadband surface plasmon polariton and hot carrier properties of borophene monolayer

Nanophotonics ◽  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Chaochao Jian ◽  
Xiangchao Ma ◽  
Jianqi Zhang ◽  
Jiali Jiang
Keyword(s):  
Transport Properties ◽  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Hot Carriers ◽  
Low Loss ◽  
Typical Application ◽  
Carrier Lifetimes ◽  
Photocatalytic Reactors ◽  
Plasmon Polariton ◽  
Energy And Momentum

Abstract Borophene monolayer with its intrinsic metallic and anisotropic band structures exhibits extraordinary electronic, optical, and transport properties. Especially, the high density of Dirac electrons enables promising applications for building low-loss broadband SPP devices. However, a systematic characterization of the surface plasmon polariton (SPP) properties and hot carriers generated from the inevitable SPP decay in borophene has not been reported so far. Most importantly, the mechanism for SPP losses remains obscurely quantified. In this work, from a fully first-principles perspective, we explicitly evaluate the main loss effects of SPP in borophene, including the Drude resistance, phonon-assisted intraband and direct interband electronic transitions. With this knowledge, we further calculate the frequency- and polarization-dependent SPP response of borophene, and evaluate some typical application-dependent figure of merits of SPP. On the other hand, we evaluate the generation and transport properties of plasmon-driven hot carriers in borophene, involving energy- and momentum-dependent carrier lifetimes and mean free paths, which provide deeper insight toward the transport of hot carriers at the nanoscale. These results indicate that borophene has promising applications in next-generation low-loss optoelectronic devices and photocatalytic reactors.

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