Single Pt atoms deposition on g-C3N4 nanosheets for photocatalytic H2 evolution or NO oxidation under visible light

Ou, Man; Wan, Shipeng; Zhang, Shule; Wang, Yanan

doi:10.1016/j.ijhydene.2017.09.047

Cited by 105 publications

(47 citation statements)

References 43 publications

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“…Single-atom noble metals coordinated with N atoms of g-C 3 N 4 can change the intrinsic band structure and light absorption process, boosting the mass and charge transfer during H 2 production. [164][165][166] Xie and coworkers synthesized atomically dispersed Pt on g-C 3 N 4 via a simple liquid-phase reaction of g-C 3 N 4 and H 2 PtCl 6 , followed by low-temperature annealing, which exhibited the H 2 evolution rate of 318 μmol h À1 and turnover frequency (TOF) of 775 h À1 in photocatalytic water splitting. [45] It was revealed that single-atom Pt can be anchored on the five-membered rings of g-C 3 N 4 through Pt-C and Pt-N bonds, and the photocatalytic activity of the synthesized cocatalyst was obviously improved due to the maximized utilization efficiency of isolated Pt atoms.…”

Section: Single Precious Metal Atoms Anchored By G-c 3 N 4 Substratesmentioning

confidence: 99%

Recent Progress in Single‐Atom Catalysts for Photocatalytic Water Splitting

Zhang

Guan

2020

Solar RRL

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Photocatalytic water splitting can realize a direct conversion from solar energy into green hydrogen energy, which is conducive to effectively mitigate energy crisis and environmental issues. Single‐atom catalysts (SACs) have shown great potential in photocatalytic hydrogen evolution, with unique geometric and electronic structures that help to boost mass and charge transfer during photocatalytic processes. Herein, recent advances of SACs in photocatalytic water splitting are focused upon. To decrease aggregation and realize sufficient utilization of metal atoms, different synthesis strategies for SACs are documented. For photocatalytic hydrogen evolution, the catalytic performances, active sites, and structure–property relationships of SACs including Al, Co, Ni, Pd, Ag, and Pt single sites are highlighted. The existing challenges and future directions of SACs in photocatalytic water splitting are provided.

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Section: Single Precious Metal Atoms Anchored By G-c 3 N 4 Substratesmentioning

confidence: 99%

Recent Progress in Single‐Atom Catalysts for Photocatalytic Water Splitting

Zhang

Guan

2020

Solar RRL

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“…Indeed, metal and non‐metal atom doping is one of the most effective and convenient way to improve the separation rate of photo‐generated electrons and holes. Pt single‐atoms were embedded in g‐C 3 N 4 and used as a co‐catalyst in photocatalytic HER ,. Ultrafast transient absorption spectroscopy has shown that the Pt SAC changed the surface trap states of graphitic carbon nitride, dramatically improving the performances .…”

Section: Catalysis With Single Atom Catalysts On Carbon‐based Materialsmentioning

confidence: 99%

Single Atom Catalysts on Carbon‐Based Materials

2018

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Metal particle size is an important parameter to consider when looking at supported catalyst performances. As for other properties, surface reactivity of metallic nanoparticles is thus highly size‐dependent. The smallest size that can be reached for this type of object is of course the isolated atom deposited on a support. The preparation of single‐atom catalysts (SAC) is not trivial, since to avoid clustering, the mean adsorption energy of the metal on the support should be higher than its cohesive energy. The choice of a support that allows a strongly interacting environment with the metal is therefore a key step in the preparation of such catalysts. The spectrum of carbon (nano)materials is very broad, and their structure as well as their surface chemistry, although sometime complex, can be tuned and exploited for the stabilization of SAC. This Review summarizes in a comprehensive manner experimental and computational studies aiming at: i) preparing SAC on carbon materials, ii) understanding the metal‐support interactions in SAC, and iii) studying how this relates to catalytic performances. The use of SAC follows well the needs dictated by society (energy and environment issues), and many studies have already been published in various fields, such as thermal catalysis, photocatalysis and electrocatalysis.

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“…Such heterojunction materials offer enhanced separation of photoexcited charge carriers, and hence suppressed recombination and energy loss through fluorescence [39,91]. Noble metal-promoted g-C3N4 offers improved UV and visible light harvesting, fast molecular diffusion, and a high density of photoactive sites [100][101][102]. TiO2/g-C3N4 heterojunctions have been fabricated by a two-step hydrothermal-calcination route from melamine, followed by an in-situ solid-state reaction [103].…”

Section: H 2 Evolutionmentioning

confidence: 99%

g-C3N4-Based Nanomaterials for Visible Light-Driven Photocatalysis

2018

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Graphitic carbon nitride (g-C 3 N 4 ) is a promising material for photocatalytic applications such as solar fuels production through CO 2 reduction and water splitting, and environmental remediation through the degradation of organic pollutants. This promise reflects the advantageous photophysical properties of g-C 3 N 4 nanostructures, notably high surface area, quantum efficiency, interfacial charge separation and transport, and ease of modification through either composite formation or the incorporation of desirable surface functionalities. Here, we review recent progress in the synthesis and photocatalytic applications of diverse g-C 3 N 4 nanostructured materials, and highlight the physical basis underpinning their performance for each application. Potential new architectures, such as hierarchical or composite g-C 3 N 4 nanostructures, that may offer further performance enhancements in solar energy harvesting and conversion are also outlined.

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Single Pt atoms deposition on g-C3N4 nanosheets for photocatalytic H2 evolution or NO oxidation under visible light

Cited by 105 publications

References 43 publications

Recent Progress in Single‐Atom Catalysts for Photocatalytic Water Splitting

Recent Progress in Single‐Atom Catalysts for Photocatalytic Water Splitting

Single Atom Catalysts on Carbon‐Based Materials

g-C3N4-Based Nanomaterials for Visible Light-Driven Photocatalysis

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