In situ Synthesis of Au-Induced Hierarchical Nanofibers/Nanoflakes Structured BiFeO3 Homojunction Photocatalyst With Enhanced Photocatalytic Activity

Li, Yan'an; Li, Jiao; Chen, Long; Sun, Haibin; Zhang, Hua; Guo, Hong; Liu, Feng

doi:10.3389/fchem.2018.00649

Cited by 15 publications

(5 citation statements)

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“…When the Au content further increases, the performance of the catalyst decreases due to the opacity and light scattering caused by excess Au NPs, which reduces the utilization of sunlight . In addition, excess Au NPs may in turn act as charge recombination centers, thereby inhibiting the effective utilization of charge carriers and leading to a decrease in photocatalytic efficiency . Meanwhile, the crushed double-shell hollow dodecahedrons demonstrated a significant reduction in performance (Figure S14).…”

Section: Resultsmentioning

confidence: 99%

“…42 These results further confirmed that the Au/N−In 46 In addition, excess Au NPs may in turn act as charge recombination centers, thereby inhibiting the effective utilization of charge carriers and leading to a decrease in photocatalytic efficiency. 47 Meanwhile, the crushed doubleshell hollow dodecahedrons demonstrated a significant reduction in performance (Figure S14). It indicates that the morphology has a certain influence on the photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

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Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion

Yu,

Chen,

Sun

et al. 2024

ACS Appl. Nano Mater.

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Converting CO 2 into useful chemicals or fuels through photocatalysis makes an important contribution to mitigating energy shortages and climate change. Effective separation of photogenerated charges, as well as related surface states, plays a crucial role in semiconductor photocatalytic systems for efficient photocatalytic CO 2 reduction. In this research, to enhance the performance of In 2 O 3 on photocatalytic CO 2 reduction, we prepared unique N-doped In 2 O 3 double-shell hollow dodecahedrons coupled with Au and Co 3 O 4 dualcocatalysts (Au/N−In 2 O 3 /Co 3 O 4 ). The experimental analysis showed that dual-cocatalysts, double-shell hollow structure, and oxygen vacancies induced by N-doping can greatly achieve charge separation/utilization efficiency and increase active sites, visible light absorption, and the CO 2 adsorption capacity. The synergy of these positive factors makes the optimized hybrid catalyst exhibit enhanced photocatalytic activity, and the average yields of CO and CH 4 under simulated solar irradiation were 96.1 and 19.9 μmol h −1 g −1 , respectively, which were approximately twice as high as the yields of pure In 2 O 3 . This work reports a feasible strategy for establishing an In 2 O 3 -involved excellent photocatalytic CO 2 reduction system.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion

Yu,

Chen,

Sun

et al. 2024

ACS Appl. Nano Mater.

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“…Data collection and data reduction were performed using Agilent's CrysAlisPro software (Yarnton, Oxfordshire, UK) [79]. Structure solution and refinement were performed with ShelX [80,81], and Olex2 was used for graphical representation of the data [82]. All molecular modeling calculations were performed using Gaussian 09 [83] using the WebMO interface.…”

Section: Methodsmentioning

confidence: 99%

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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“…Among the Au x -BFO structures, the Au 1.2 -BFO sample proved the best photocatalytic activity (85.76%) after 3h of irritation, being much higher than pristine BFO samples (49.49%) considering the same experimental conditions. The authors attributed the notorious improvement of photocatalytic activity primarily to the SPR effect of Au NPs in the hierarchical of Au-BFO nanostructured homojunction and secondly to the structural defects (Fe 2+ /Fe 3+ pairs and oxygen vacancy) [81].…”

Section: Sol-gel Methodsmentioning

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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In situ Synthesis of Au-Induced Hierarchical Nanofibers/Nanoflakes Structured BiFeO3 Homojunction Photocatalyst With Enhanced Photocatalytic Activity

Cited by 15 publications

References 50 publications

Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion

Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion

Catalysis by Precious Metals, Past and Future

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

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In situ Synthesis of Au-Induced Hierarchical Nanofibers/Nanoflakes Structured BiFeO3 Homojunction Photocatalyst With Enhanced Photocatalytic Activity

Cited by 15 publications

References 50 publications

Oxygen Vacancy-Enriched N-Doped In2O3 Double-Shell Hollow Dodecahedrons Decorated with Au and Co3O4 Nanoparticles for the Photocatalytic CO2 Conversion

Oxygen Vacancy-Enriched N-Doped In2O3 Double-Shell Hollow Dodecahedrons Decorated with Au and Co3O4 Nanoparticles for the Photocatalytic CO2 Conversion

Catalysis by Precious Metals, Past and Future

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

Contact Info

Product

Resources

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Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion

Oxygen Vacancy-Enriched N-Doped In₂O₃ Double-Shell Hollow Dodecahedrons Decorated with Au and Co₃O₄ Nanoparticles for the Photocatalytic CO₂ Conversion