Fe Single-Atom Catalyst for Visible-Light-Driven Photofixation of Nitrogen Sensitized by Triphenylphosphine and Sodium Iodide

Hou, Tingting; Peng, Hailong; Yue, Xin; Wang, Sanmei; Zhu, Wenkun; Chen, Lanlan; Yao, Yuan; Zhang, Wenhua; Liang, Shuquan; Wang, Liangbing

doi:10.1021/acscatal.0c00920

Cited by 63 publications

(43 citation statements)

References 33 publications

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“…S22b ). It indicates that PM-CDs-30 exhibits the best photo-response property, while PM-CDs-0 shows the worst compared to others, strongly suggesting that PM-CDs-30 has superior charge generation property compared to pristine polymer PM-CDs-0 31 . A series of in situ TPV tests on PM-CDs- x (from PM-CDs-0 to PM-CDs-30) were carried out and shown in Fig.…”

Section: Resultsmentioning

confidence: 98%

“…To understand the mechanism of photocatalytic H 2 O 2 production over the PM-CDs-30 in seawater, by using AgNO 3 , EDTA-2Na, tert -butyl alcohol (TBA), and benzoquinone (BQ) as electron ( e − ), hole (h + ), hydroxyl radical (·OH), and superoxide radical (·O 2 − ) scavengers, the active species trapping experiments were performed 4 , 31 . As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater

et al. 2021

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Artificial photosynthesis of H2O2 from H2O and O2, as a spotless method, has aroused widespread interest. Up to date, most photocatalysts still suffer from serious salt-deactivated effects with huge consumption of photogenerated charges, which severely limit their wide application. Herein, by using a phenolic condensation approach, carbon dots, organic dye molecule procyanidins and 4-methoxybenzaldehyde are composed into a metal-free photocatalyst for the photosynthetic production of H2O2 in seawater. This catalyst exhibits high photocatalytic ability to produce H2O2 with the yield of 1776 μmol g−1h−1 (λ ≥ 420 nm; 34.8 mW cm−2) in real seawater, about 4.8 times higher than the pure polymer. Combining with in-situ photoelectrochemical and transient photovoltage analysis, the active site and the catalytic mechanism of this composite catalyst in seawater are also clearly clarified. This work opens up an avenue for a highly efficient and practical, available catalyst for H2O2 photoproduction in real seawater.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater

et al. 2021

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“…In addition, the detection of product NH 3 also requires careful selection of appropriate detection methods. Commonly used ammonium detection methods include: ion chromatography, [ 214,220 ] colorimetry (indophenol blue method and Nessler's reagent), [ 221–224 ] 1 H NMR spectroscopy, [ 225 ] and ammonia ion selective electrodes. [ 226 ] For aqueous ammonia solutions, these methods have shown higher accuracy in a wide range of ammonia concentrations.…”

Section: Photocatalytic Nitrogen Fixationmentioning

confidence: 99%

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Zhang

et al. 2021

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Photocatalysis is a promising energy conversion and environmental restoration technology. The main focus of photocatalysis is the development and manufacture of highly efficient photocatalysts. Semiconductor‐based photocatalysis technology based on harnessing solar energy is considered as an attractive approach to solve the problems of global energy shortage and environmental pollution. Since 2009 pioneering work has been carried out on polymeric carbon nitride (PCN) for visible photocatalytic water splitting, thus PCN‐based photocatalysis has become a hot research topic, demanding significant research attention. This article reviews the physical and chemical properties, synthesis methods, and the methods to control the morphology, heteroatom doping, and construction of heterojunctions to improve the performance of PCN‐based photocatalysts in water splitting and nitrogen fixation. Through different design strategies, the photo‐generated electron‐hole pair separation efficiency of PCN materials can be effectively improved, thereby improving their photocatalytic performance. Finally, the challenges of PCN‐based photocatalysts in water splitting and nitrogen fixation applications are discussed herein. It is strongly believed that through different design strategies, efficient PCN‐based photocatalysts can be constructed for both water splitting and nitrogen reduction. These excellent modification strategies can be used as a guiding theory for photocatalytic reactions of other promising catalysts and further promote the development of photocatalysis.

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“…Photocatalytic nitrogen fixation is considered as a sustainable and green technology for ammonia synthesis. [ 5,180 ] Single‐atom photocatalyst exhibited excellent performance for N 2 reduction to NH 3 due to the outstanding catalytic activities of single metal sites. Some works provided insightful understandings of mechanism for nitrogen fixation.…”

Section: Applications Of Single‐atom Catalystsmentioning

confidence: 99%

Synthesis Strategies, Catalytic Applications, and Performance Regulation of Single‐Atom Catalysts

Jung

et al. 2021

Adv Funct Materials

167

106

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The recent dramatic increase in research on isolated metal atoms has received extensive scientific interest in the new frontier of single‐atom catalysis. As newly advanced materials in catalysis, single‐atom catalysts (SACs) have received enormous interest from the perspectives of both scientific research and industrial applications due to their remarkable activity. In addition, other catalytic properties of single metal atoms, including stability and selectivity, can be further improved by tuning their electronic/geometric structures and modulating the metal–support interactions. SACs usually consist of dispersed atoms and appropriate support materials, which are employed to anchor, confine, and/or coordinate with isolated metal atoms. Therefore, the nature of single metal sites allows acquiring a maximum atom utilization approaching 100%, which is of significance, particularly for the development of noble‐metal‐based catalysts. In order to systematically understand the structure–property relationships and the underlying catalytic mechanisms relationship of SACs, the representative scientific research efforts in their synthesis strategies, catalytic applications, and performance regulation are discussed here. Typical single‐atom catalysis processes and the corresponding mechanisms in electrochemistry, photochemistry, organic synthesis, and biomedicine are also summarized. Finally, the challenges and prospects for the development of single‐atom catalysis and SACs are highlighted.

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Fe Single-Atom Catalyst for Visible-Light-Driven Photofixation of Nitrogen Sensitized by Triphenylphosphine and Sodium Iodide

Cited by 63 publications

References 33 publications

A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater

A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Synthesis Strategies, Catalytic Applications, and Performance Regulation of Single‐Atom Catalysts

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