Photocatalytic hydrogen production by water splitting over Au/Al-SrTiO3

Saadetnejad, Dilara; Yıldırım, Ramazan

doi:10.1016/j.ijhydene.2017.10.154

Cited by 78 publications

(32 citation statements)

References 46 publications

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Section: Characterization and Hydrogen Bonding Interactionssupporting

confidence: 65%

“…This compound was reported previously by Ito et al, but at room temperature in a non-standard space group[70]. The bond lengths and angles of the compounds reported here may be compared with those reported previously in the literature[71][72][73][74].The 1 H NMR spectrum in D 2 O shows three multiplets at δ 4.08-3.63, 3.37-2.73, and 2.28-1.52, with integrated ratios of 1:2:4, respectively. Palladium's isotope distribution pattern was observed in the HRMS spectrum (see Supplementary Materials).D-proline was used to prepare cis-bis(D-prolinato)palladium(II), compound 8.…”

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confidence: 65%

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Catalysis by Precious Metals, Past and Future

Tejada¹,

Ivanova²

2020

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CSIC), within the Química de Superficies y Catálisis reseach group, with a Juan de la Cierva contract in 2012. Since 2016, she has been an associate professor. Her research interests include the synthesis and characterization of heterogeneous catalysts, and catalysts structuration and catalytic reactions for environmental and energetic applications. Svetlana Ivanova graduated in chemistry (specialty: inorganic and analytical chemistry) from the University of Sofia St. Kliment of Ohrid, Bulgaria, with a Master of Chemical Sciences from the same university and from the University Louis Pasteur, Strasbourg France (University of Strasbourg I), where subsequently she obtained her Ph.D. Her early research interests focus on heterogeneous catalysis based on noble metals (Au, PGM) and their applications to reactions of exhaust gas treatment, CO and VOCs oxidation, and NOx reductions. Later, she was involved in variety of projects including zeolites and silicon carbide application in diverse catalytic reactions, like partial oxidation of methane, production of synthetic fuels (Fischer-Tropsch process, dimethyl ether and olefins production from methanol). In 2008, she joined the Institute of Material Science of Seville, Spain, and shortly after the Inorganic Chemistry Department of the University of Seville, where integrates her teaching and research activities as a professor. Her investigation is centered on the design, synthesis, and application of heterogeneous precious metal catalysts for H2 clean-up processes and reactions for biomass chemical valorization to high-added-value products. vii Preface to "Catalysis by Precious Metals, Past and Future""Shiny, malleable, and resistant to corrosion" is the obvious definition of precious metals, to which "expensive" and scarce "can" be added. Their use in jewellery, trade, and arts has led to a new era in which metal catalytic potential has been discovered, and precious metals are now key players in the chemical industry. Platinum, alone or in combination with rhodium, was the first precious metal to be catalytically incorporated into the sulfuric and nitric acid production processes. Gold has entered the group of catalytically active metals in the last few decades.The use of all these metals in their bulk form was successively limited due to their high cost and the highly dispersed and supported metal nanoparticles that appeared. The use of supports improves the dispersion of the precious metals, thus reducing their quantity and decreasing the cost of the final catalyst and also preventing metal sintering, loss of catalytically active sites, and deactivation. Both support and precious metals cooperate in the formation of an efficient catalytic machine. The precious metal-support interaction depends on many factors, like precious metal contents, the nature of support and metal, employed preparation methods, and metal nanoparticles morphology. The addition of small amounts of noble metals into the formulation of other transition metals catalysts and the use of bimetallic noble...

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Section: Characterization and Hydrogen Bonding Interactionssupporting

confidence: 65%

supporting

confidence: 65%

Catalysis by Precious Metals, Past and Future

Tejada¹,

Ivanova²

2020

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“…The photo-excited electron and hole needed to migrate to the surface to play the catalytic role. The smaller the particle size, the shorter migration distance was [ 18 ]. Accordingly, the recombination possibility of the photo-excited electron and hole became smaller.…”

Section: Resultsmentioning

confidence: 99%

New Insights into Sensitization Mechanism of the Doped Ce (IV) into Strontium Titanate

et al. 2018

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SrTiO3 and Ce4+ doped SrTiO3 were synthesized by a modified sol–gel process. The optimization synthesis parameters were obtained by a series of single factor experiments. Interesting phenomena are observable in Ce4+ doped SrTiO3 systems. Sr2+ in SrTiO3 system was replaced by Ce4+, which reduced the surface segregation of Ti4+, ameliorated agglomeration, increased specific surface area more than four times compared with pure SrTiO3, and enhanced quantum efficiency for SrTiO3. Results showed that Ce4+ doping increased the physical adsorption of H2O and adsorbed oxygen on the surface of SrTiO3, which produced additional catalytic active centers. Electrons on the 4f energy level for Ce4+ produced new energy states in the band gap of SrTiO3, which not only realized the use of visible light but also led to an easier separation between the photogenerated electrons and holes. Ce4+ repeatedly captured photoelectrons to produce Ce3+, which inhibited the recombination between photogenerated electrons and holes as well as prolonged their lifetime; it also enhanced quantum efficiency for SrTiO3. The methylene blue (MB) degradation efficiency reached 98.7% using 3 mol % Ce4+ doped SrTiO3 as a photocatalyst, indicating highly photocatalytic activity.

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“…The relative performance of methanol and isopropyl medium seems to depend on the alcohol concentration since the isopropyl performs better at 10% and 30%, while methanol is better at 20%. Furthermore, the distinguished results obtained from differences among concentrations and different alcohol types may be related to the carbon number present in the alcohol molecules, which may result in different byproducts, the redox potential of alcohol, and their OH scavenging behavior [73].…”

Section: Solid-state Reactionmentioning

confidence: 99%

Perovskite Structure Associated with Precious Metals: Influence on Heterogenous Catalytic Process

et al. 2019

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The use of perovskite-based materials and their derivatives can have an important role in the heterogeneous catalytic field based on photochemical processes. Photochemical reactions have a great potential to solve environmental damage issues. The presence of precious metals in the perovskite structure (i.e., Ag, Au, or Pt) may improve its efficiency significantly. The precious metal may comprise the perovskite lattice as well as form a heterostructure with it. The efficiency of catalytic materials is directly related to processing conditions. Based on this, this review will address the use of perovskite materials combined with precious metal as well as their processing methods for the use in catalyzed reactions.

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Photocatalytic hydrogen production by water splitting over Au/Al-SrTiO3

Cited by 78 publications

References 46 publications

Catalysis by Precious Metals, Past and Future

Catalysis by Precious Metals, Past and Future

New Insights into Sensitization Mechanism of the Doped Ce (IV) into Strontium Titanate

Perovskite Structure Associated with Precious Metals: Influence on Heterogenous Catalytic Process

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