Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

ACS Catalysis, Год журнала: 2020, Номер 10(17), С. 10253 - 10315

Опубликована: Авг. 27, 2020

The use of solar energy to catalyze the photo-driven processes has attracted tremendous attention from scientific community because its great potential address and environmental issues. In this regard, several attempts have been made by researchers design develop different materials with enhanced photocatalytic efficiencies. This Review comprehensively summarizes recent reports on perovskite oxide based photocatalysts for organic pollutant degradation, water splitting, carbon dioxide conversion, nitrogen fixation along basic understanding involved mechanisms, current trends advances in field. design, synthesis, development strategies discussed detail provide a comprehensive view materials' fabrication that influences their properties. Subsequently, insights materials, including simple oxides, mixed layered are provided above-mentioned applications detailed manner. Finally, summary perspective future research direction discussed. Based progress field, it is highly anticipated systems, comprising groundbreaking technologies large-scale realization these processes, can be established near environment-oriented challenges.

Язык: Английский

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Rational Catalyst Design for N₂ Reduction under Ambient Conditions: Strategies toward Enhanced Conversion Efficiency

ACS Catalysis, Год журнала: 2020, Номер 10(12), С. 6870 - 6899

Опубликована: Май 26, 2020

Ammonia (NH3), one of the basic chemicals in most fertilizers and a promising carbon-free energy storage carrier, is typically synthesized via Haber–Bosch process with high consumption massive emission greenhouse gases. The photo/electrocatalytic nitrogen reduction reaction (NRR) under ambient conditions has attracted increasing interests recently, providing alternative routes to realize green NH3 synthesis. Despite rapid advances achieved this attractive research field, unsatisfactory conversion efficiency including low yield rate, limited Faradaic or apparent quantum still remains as great challenge. NRR performance intrinsically related electronic surface structure catalysts. Rational design preparation advanced catalysts are indispensable improve (e.g., activity selectivity) NRR. In Review, various strategies for development desirable comprehensively summarized, mainly containing defect engineering, structural manipulation, crystallographic tailoring, interface regulation. State-of-the-art heterogeneous catalysts, prevailing theories underlying catalytic mechanisms, together current issues, critical challenges, perspectives discussed. It highly expected that Review will promote understanding recent area stimulate greater designing future.

Язык: Английский

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Vacancy Engineering in Semiconductor Photocatalysts: Implications in Hydrogen Evolution and Nitrogen Fixation Applications

Advanced Functional Materials, Год журнала: 2021, Номер 31(28)

Опубликована: Апрель 25, 2021

Abstract It is a well‐known fact that the pronounced photogenerated charge recombination and poor light absorption are main bottlenecks of photocatalysis applications. The conventional approaches to address these problems involve bandgap engineering suppression after irradiation, which results in an enhancement photocatalytic performance materials. However, most essential aspect surface modification engineer active sites on catalyst generally not given much importance. Contrary this, defect another approach by optical, separation, properties materials can be tuned. In this review article, effect introduction vacancies selected semiconductor materials, viz., metal oxides, perovskite sulfides, oxyhalides, nitrides comprehensively summarized. only improves their optical transfer but also affects properties, helpful adsorption reactants surface. Herein, hydrogen evolution nitrogen fixation applications vacancy engineered discussed detail along with current trends, scalability requirements, rigorous experimental protocols.

Язык: Английский

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A Janus Fe‐SnO₂Catalyst that Enables Bifunctional Electrochemical Nitrogen Fixation

Angewandte Chemie International Edition, Год журнала: 2020, Номер 59(27), С. 10888 - 10893

Опубликована: Апрель 3, 2020

Electrochemical N2 reduction reactions (NRR) and the oxidation reaction (NOR), using H2 O , are a sustainable approach to fixation. To date, owing chemical inertness of nitrogen, emerging electrocatalysts for electrochemical NRR NOR at room temperature atmospheric pressure remain largely underexplored. Herein, new-type Fe-SnO2 was designed as Janus electrocatalyst achieving highly efficient catalysis. A high NH3 yield 82.7 μg h-1 mgcat.-1 Faraday efficiency (FE) 20.4 % were obtained NRR. This catalyst can also serve an excellent with NO3- yields 42.9 FE 0.84 %. By means experiments DFT calculations, it is revealed that oxygen vacancy-anchored single-atom Fe effectively adsorb activate inert molecules, lowering energy barrier vital breakage N≡N resulting in enhanced fixation performance.

Язык: Английский

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Metal-organic framework as a photocatalyst: Progress in modulation strategies and environmental/energy applications

Progress in Energy and Combustion Science, Год журнала: 2020, Номер 81, С. 100870 - 100870

Опубликована: Июль 7, 2020

Язык: Английский

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Layered bismuth-based photocatalysts

Coordination Chemistry Reviews, Год журнала: 2022, Номер 463, С. 214515 - 214515

Опубликована: Апрель 7, 2022

Язык: Английский

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Point‐Defect Engineering: Leveraging Imperfections in Graphitic Carbon Nitride (g‐C₃N₄) Photocatalysts toward Artificial Photosynthesis

Small, Год журнала: 2021, Номер 17(48)

Опубликована: Апрель 28, 2021

Abstract Graphitic carbon nitride (g‐C 3 N 4 ) is a kind of ideal metal‐free photocatalysts for artificial photosynthesis. At present, pristine g‐C suffers from small specific surface area, poor light absorption at longer wavelengths, low charge migration rate, and high recombination rate photogenerated electron–hole pairs, which significantly limit its performance. Among myriad modification strategies, point‐defect engineering, namely tunable vacancies dopant introduction, capable harnessing the superb structural, textural, optical, electronic properties to acquire an ameliorated photocatalytic activity. In view burgeoning development in this pacey field, timely review on state‐of‐the‐art advancement engineering vital significance advance solar energy conversion. Particularly, insights into intriguing roles point defects, synthesis, characterizations, systematic control as well versatile application defective ‐based nanomaterials toward water splitting, dioxide reduction nitrogen fixation will be presented detail. Lastly, conclude with balanced perspective technical scientific hindrances future prospects. Overall, it envisioned that open new frontier uncover novel functionalities nanostructures catalysis.

Язык: Английский

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The Journey toward Low Temperature, Low Pressure Catalytic Nitrogen Fixation

Advanced Energy Materials, Год журнала: 2020, Номер 10(19)

Опубликована: Апрель 13, 2020

Abstract Ammonia and its derived products are vital to modern societies. Artificial nitrogen fixation ammonia via the Haber–Bosch process has been employed industrially for over 100 years. However, is energy intensive not sustainable in current form as it uses hydrogen sourced from steam methane reforming reduce N 2 . The roadmap NH 3 production demands discovery of novel approaches under near ambient conditions that preferably use water reducing agent. Over last decade, great efforts have made develop catalysts capable mild reaction conditions, using strategies such low temperature thermal catalysis, nonthermal plasma enzymatic photocatalysis, electrocatalysis generate other valuable nitrogen‐containing chemicals. In parallel with catalytic performance studies, researchers also placed emphasis on mechanistic understanding natural artificial catalysts. this work, various routes now being explored summarized. different dinitrogen activation hydrogenation pathways described, whilst describing key advances date journey toward synthesis. Key obstacles need be overcome attract industry interest discussed.

Язык: Английский

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Nanostructured photocatalysts for nitrogen fixation

Nano Energy, Год журнала: 2020, Номер 71, С. 104645 - 104645

Опубликована: Фев. 26, 2020

Язык: Английский

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Developing sustainable, high-performance perovskites in photocatalysis: design strategies and applications

Chemical Society Reviews, Год журнала: 2021, Номер 50(24), С. 13692 - 13729

Опубликована: Янв. 1, 2021

Recent progress of earth-abundant, nontoxic perovskite oxides, halides and oxyhalides for photocatalysis is discussed related to composition structure.

Язык: Английский

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