The effect of microemulsion composition on the morphology of Pd nanoparticles deposited at the surface of TiO2 and photoactivity of Pd-TiO2

Długokęcka, Marta; Łuczak, Justyna; Polkowska, Żaneta; Zaleska-Medynska, Adriana

doi:10.1016/j.apsusc.2017.02.014

Cited by 24 publications

(6 citation statements)

References 56 publications

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“…Interestingly, Pt can be deposited over anatase TiO 2 selectively over specific surface planes (like (101)), favoring specific reactions like hydrogen production [ 140 ]. Pd promotion of TiO 2 activity was also investigated [ 141 ]. The work analyzed the control of the metal particle size and showed that an average particle size of 2.4 nm improves activity significantly with respect to bare TiO 2 , particularly under visible light [ 141 ].…”

Section: Composite Photocatalystsmentioning

confidence: 99%

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Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

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Photo-catalysis is a research field with broad applications in terms of potential technological applications related to energy production and managing, environmental protection, and chemical synthesis fields. A global goal, common to all of these fields, is to generate photo-catalytic materials able to use a renewable energy source such as the sun. As most active photocatalysts such as titanium oxides are essentially UV absorbers, they need to be upgraded in order to achieve the fruitful use of the whole solar spectrum, from UV to infrared wavelengths. A lot of different strategies have been pursued to reach this goal. Here, we selected representative examples of the most successful ones. We mainly highlighted doping and composite systems as those with higher potential in this quest. For each of these two approaches, we highlight the different possibilities explored in the literature. For doping of the main photocatalysts, we consider the use of metal and non-metals oriented to modify the band gap energy as well as to create specific localized electronic states. We also described selected cases of using up-conversion doping cations. For composite systems, we described the use of binary and ternary systems. In addition to a main photo-catalyst, these systems contain low band gap, up-conversion or plasmonic semiconductors, plasmonic and non-plasmonic metals and polymers.

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Section: Composite Photocatalystsmentioning

confidence: 99%

“…Pd promotion of TiO 2 activity was also investigated [ 141 ]. The work analyzed the control of the metal particle size and showed that an average particle size of 2.4 nm improves activity significantly with respect to bare TiO 2 , particularly under visible light [ 141 ].…”

Section: Composite Photocatalystsmentioning

confidence: 99%

Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

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“…Owing to the broad band gap of titania (anatase, ~3.2 eV) there are some disadvantages to its effectiveness in photocatalysis applications [11] such as titania is active only in ultraviolet-light irradiation with high energy [15][16][17]. Another disadvantages, the high recombination of photogenerated electron-hole pair of titania resulting in low photocatalytic activity and low affinity [18,19]. Modification of TiO 2 with non-metals dopant such as nitrogen and carbon have been proposed to enhance photocatalytic activity in visiblelight irradiation to degrade organic and inorganic pollutant [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Kinetics studies on photodegradation of methyl orange in the presence of C-N-codoped TiO2 catalyst

et al. 2019

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T his work investigated the photodegradation of azo dye, methyl orange, without and with the addition of C-N-codoped TiO 2 catalyst using a visible halogen-lamp as a light source. C-Ncodoped TiO 2 was prepared by free-organic solvent peroxo sol-gel method. The effects of initial dye concentration, catalyst dosage, and pH solution on the photodegradation of methyl orange were studied. Photodegradation process for methyl orange solution at acidic condition showed high removal percentage. 5 mg L-1 methyl orange achieved color removal until 94% for 180 min irradiation in photodegradation process with the presence of C-N-codoped TiO 2 catalyst, and approximately 70% TOC removed as the results of mineralization process. The kinetics reaction rate of photodegradation of methyl orange dye with the addition of C-N-codoped TiO2 followed pseudo-first order represented by Langmuir-Hinshelwood model, the kinetics constant of photodegradation became higher by decreasing the initial concentration of methyl orange. Three organic byproducts of methyl orange formed during photodegradation process was identified by LC-MS/MS system then degradation pathway of methyl orange photodegradation in the presence of C-N-codoped TiO 2 catalyst was proposed.

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“…The preparation methods of composite photocatalysts include chemical reduction, − light-induced reduction, photodeposition, thermal decomposition, liquid impregnation, sol–gel, and hydrothermal method. Photocatalysts synthesized by various methods have effective photocatalytic properties, which provide broad prospects for applications in the fields of optical computation, solar cells, photocatalysis, and communication.…”

Section: Introductionmentioning

confidence: 99%

Simple Preparation of Hierarchically Porous Ce/TiO₂/Graphitic Carbon Microspheres for the Reduction of CO₂with H₂O under Simulated Solar Irradiation

Zhang

Qian

et al. 2019

ACS Omega

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Hierarchically porous Ce/TiO2/graphitic carbon microsphere composites (xCe/TiO2/GCM, where x = 0.2, 1.0, 2.0, 5.0 mmol·L–1) were prepared for the first time by using a simple colloidal crystal template and characterized by X-ray diffraction, nitrogen adsorption and desorption, scanning electron microscopy, and ultraviolet–visible diffuse reflectance spectra. In addition, the photocatalytic activity of CO2 reduction by H2O under simulated solar irradiation was studied. The results showed that the Ce/TiO2/GCM composite material was characterized by large porosity, high concentration of metal compounds and graphitized carbon matrix, and the content of acetone solvent having a great impact on its form. In terms of the photocatalytic CO2 reaction, the CH4 and CO productions were 4.587 and 357.851 μmol·g–1, respectively. The 2Ce/TiO2/GCM photocatalyst gave the highest production rate for three products. Under simulated solar irradiation, the Ce/TiO2/GCM has excellent photocatalytic activity in the photoreduction of CO2 from H2O, which was related to the special composition and the Ce/TiO2/GCM structure.

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The effect of microemulsion composition on the morphology of Pd nanoparticles deposited at the surface of TiO2 and photoactivity of Pd-TiO2

Cited by 24 publications

References 56 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Kinetics studies on photodegradation of methyl orange in the presence of C-N-codoped TiO2 catalyst

Simple Preparation of Hierarchically Porous Ce/TiO₂/Graphitic Carbon Microspheres for the Reduction of CO₂with H₂O under Simulated Solar Irradiation

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The effect of microemulsion composition on the morphology of Pd nanoparticles deposited at the surface of TiO2 and photoactivity of Pd-TiO2

Cited by 24 publications

References 56 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Kinetics studies on photodegradation of methyl orange in the presence of C-N-codoped TiO2 catalyst

Simple Preparation of Hierarchically Porous Ce/TiO2/Graphitic Carbon Microspheres for the Reduction of CO2with H2O under Simulated Solar Irradiation

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Product

Resources

About

Simple Preparation of Hierarchically Porous Ce/TiO₂/Graphitic Carbon Microspheres for the Reduction of CO₂with H₂O under Simulated Solar Irradiation