In situ construction of Z-scheme g-C3N4/Mg1.1Al0.3Fe0.2O1.7 nanorod heterostructures with high N2 photofixation ability under visible light

Wang, Yanjuan; Wei, Wan In; Li, Mengyan; Hu, Shaozheng; Zhang, Jian; Ren, Feng

doi:10.1039/c7ra00097a

Cited by 54 publications

(16 citation statements)

References 48 publications

(36 reference statements)

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“…[340][341][342][343] Recently, the photocatalytic activity of production of NH 3 from N 2 and H 2 O (Equation 42) has been much improved by using g-C 3 N 4 based heterostructured photocatalysts and other semiconductors such as BDD. [344][345][346][347][348] The selective conversion of dinitrogen into ammonia was also made possible through plasmon-induced charge separation by using a strontium titanate (SrTiO 3 ) photoelectrode loaded with gold nanoparticles (Au-NPs) and a zirconium/zirconium oxide (Zr/ZrOx) thin film to produce simultaneous stoichiometric amounts of ammonia and oxygen from nitrogen and water under visible-light irradiation (Equation 42). 349 The NH 3 formation action spectrum approximately agrees with the plasmon resonance spectrum.…”

Section: Photocatalytic Production Of Ammonia By Nitrogen Fixation Anmentioning

confidence: 99%

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Fukuzumi

2017

Joule

171

116

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This review focuses on the production of liquid fuels using solar energy combined with their use in direct liquid fuel cells. The production of formic acid, which is the two-electron reduced product of CO 2 , as a solar liquid fuel as well as a hydrogen storage material is discussed together with its use in direct formate fuel cells. Other CO 2 reduction products such as methanol and formaldehyde as solar liquid fuels as well as hydrogen storage materials are reviewed with the performance of the corresponding fuel cells. The production of nitrogen fixation products such as ammonia and hydrazine is also reviewed together with their fuel cells. Finally, the production of hydrogen peroxide from not only pure water but also seawater and dioxygen in the air using solar energy is discussed and combined with the recent development of one-compartment hydrogen peroxide fuel cells.

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Section: Photocatalytic Production Of Ammonia By Nitrogen Fixation Anmentioning

confidence: 99%

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Fukuzumi

2017

Joule

171

116

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“…As-synthesized bismuth monoxide (BiO) materials were applied in the photocatalytic reduction of N 2 to NH 3 under solar light. Research results [28] showed that the NH 3 synthesis rate is up to 1226 mmol•g −1 •h −1 which is about 1000 times higher than that of the Fe-TiO 2 photocatalyst (Table 2). Obviously, deactivation of this photocatalyst did not occur even after being used more than 120 hours.…”

Section: Other Metal Oxide-based Materialsmentioning

confidence: 95%

Progress of Metal Oxide (Sulfide)-Based Photocatalytic Materials for Reducing Nitrogen to Ammonia

Yang

2018

Journal of Chemistry

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The Haber–Bosch process has been an important approach to produce ammonia for meeting the food need of increasing population and the worldwide need of nitrogenous fertilizers since 1913. However, the traditional ammonia production process is a high energy-consumption process, which usually produces 1 metric ton ammonia with releasing around 1.9 metric tons CO2. Photocatalytic ammonia synthesis under solar light as energy source, an attractive and promising alternative approach, is a very challenging target of reducing fossil energy consumption and environmental pollution. Therefore, photocatalytic ammonia production process would emerge huge opportunities by directly providing nitrogenous fertilizers in a distributed manner as needed in the agricultural fields. In this article, different metal oxide (sulfide)-based photocatalytic materials for reducing nitrogen to ammonia under ambient conditions are reviewed. This review provides insights into the most recent advancements in understanding the photocatalyst materials which are of fundamental significance to photocatalytic nitrogen reduction, including the state-of-the-art, challenges, and prospects in this research field.

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“…This work highlights the possibility of designing hybrid systems with organic and inorganic semiconductors for N2 photofixation. As mentioned above, construction heterojunction is the preferable approach to elevate the N2 fixation performance of g-C3N4 [241][242][243][244] .…”

Section: N2 Photofixationmentioning

confidence: 99%

Review of Z-Scheme Heterojunctions for Photocatalytic Energy Conversion

Liu¹,

Chen²,

Li³

et al. 2020

Acta Physico Chimica Sinica

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Inspired by the photosynthesis of green plants, various artificial photosynthetic systems have been proposed to solve the energy shortage and environmental problems. Water photosplitting, carbon dioxide photoreduction, and nitrogen photofixation are the main systems that are used to produce solar fuels such as hydrogen, methane, or ammonia. Although conducting artificial photosynthesis using man-made semiconducting materials is an ideal and potential approach to obtain solar energy, constructing an efficient photosynthetic system capable of producing solar fuels at a scale and cost that can compete with fossil fuels remains challenging. Therefore, exploiting the efficient and low-cost photocatalysts is crucial for boosting the three main photocatalytic processes (light-harvesting, surface/interface catalytic reactions, and charge generation and separation) of artificial photosynthetic systems. Among the various photocatalysts developed, the Z-scheme heterojunction composite system can increase the light-harvesting ability and remarkably suppress charge carrier recombination; it can also promote surface/interface catalytic reactions by preserving the strong reductive/oxidative capacity of the photoexcited electrons/holes, and therefore, it has attracted considerable attention. The continuing progress of Z-scheme nanostructured heterojunctions, which convert solar energy into chemical energy through photocatalytic processes, has witnessed the importance of these heterojunctions in further improving the overall efficiency of photocatalytic reaction systems for producing solar fuels. This review summarizes the progress of Z-scheme heterojunctions as photocatalysts and the advantages of using the direct Z-scheme heterojunctions over the traditional type II, all-solid-state Z-schemel, and liquid-phase Z-scheme ones. The basic principle and corresponding mechanism of the two-step excitation are illustrated. In particular, applications of various types of Z-scheme nanostructured materials (inorganic, organic, and inorganic-organic hybrid materials) in photocatalytic energy conversion and different controlling/engineering strategies (such as extending the spectral absorption region, promoting charge transfer/separation and surface chemical modification) for enhancing the photocatalytic efficiency in the last five years are highlighted. Additionally, characterization methods (such as sacrificial reagent experiment, metal loading, radical trapping testing, in situ X-ray photoelectron spectroscopy, photocatalytic reduction experiments, Kelvin probe force microscopy, surface photovoltage spectroscopy, transient absorption spectroscopy, and theoretical calculation) of the Z-scheme photocatalytic mechanism, and the assessment criteria and methods of the photocatalytic performance are discussed. Finally, the challenges associated with Z-scheme heterojunctions and the possible growing trend are presented. We believe that this review will provide a new understanding of the breakthrough direction of photocatalytic performance and p...

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In situ construction of Z-scheme g-C₃N₄/Mg_1.1Al_0.3Fe_0.2O_1.7 nanorod heterostructures with high N₂ photofixation ability under visible light

Cited by 54 publications

References 48 publications

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Progress of Metal Oxide (Sulfide)-Based Photocatalytic Materials for Reducing Nitrogen to Ammonia

Review of Z-Scheme Heterojunctions for Photocatalytic Energy Conversion

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