Cu-doped CoS2 polyhedrons with high catalytic activity and long-term stability

Yin, Jie; Chen, Pin; Lu, Minglong; Song, Lili; Zhang, Renyun; Xu, Feng; Wu, Ningning; Wang, Yuqiao

doi:10.1007/s40843-020-1316-1

Cited by 15 publications

(12 citation statements)

References 26 publications

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“…The conduction and valence band regions in the PMC composite were contributed by the electronic states in g-C 3 N 4 , while the Fermi level region was occupied by the electronic states in Pt and MoS 2 . Moreover, 0.879 electronic states were contributed by MoS 2 near the Fermi level in the PMC composite (Figure E), indicating that MoS 2 can improve the electronic conductivity . The enhanced conductivity should accelerate the electron transport, thus benefiting the photocatalytic performance.…”

Section: Resultsmentioning

confidence: 96%

“…Moreover, 0.879 electronic states were contributed by MoS 2 near the Fermi level in the PMC composite (Figure 2E), indicating that MoS 2 can improve the electronic conductivity. 25 The enhanced 3A. For g-C 3 N 4 , a strong diffraction peak at 27.8 was assigned to the (002) plane of graphitic g-C 3 N 4 , which is corresponding to the interlayer stacking of the conjugated aromatic units in g-C 3 N 4 .…”

Section: ■ Results and Discussionmentioning

confidence: 98%

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Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Ding

Song

et al. 2022

ACS Appl. Energy Mater.

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Construction of effective charge separation and transfer channels is a critical issue in photocatalytic energy conversion. In this work, ultrasmall fine Pt nanoparticles and MoS 2 nanosheets were deposited on the surface of g-C 3 N 4 as cocatalysts. The presence of MoS 2 can effectively induce the structural reconstruction of g-C 3 N 4 and the redistribution of surface charges. The enriched electrons localized in the S and N atoms were conductive to the reduction of Pt 4+ and the promotion of the metal− support interaction, thus boosting charge separation and transfer. As a result, the obtained Pt/MoS 2 /g-C 3 N 4 composite provided a highly photocatalytic hydrogen activity, up to 1595.3 μmol h −1 with an AQE of 30.9% at 435 nm, 87.6 times higher than g-C 3 N 4 . This work may provide some insights into the rational design of high-efficient composite photocatalysts for solar energy conversion.

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Section: Resultsmentioning

confidence: 96%

Section: ■ Results and Discussionmentioning

confidence: 98%

Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Ding

Song

et al. 2022

ACS Appl. Energy Mater.

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“…Cu-doped CoS 2 polyhedrons (Cu-CoS 2 -P) were controllably synthesized on FTO substrate by Yin et al through the hydrothermal method. [88] The formation mechanism of the truncated tetragonal bipyramidal shaped CoS 2 with ( 111), (100), and (110) facets can be elucidated by the Wulff construction via DFT calculations. Meanwhile, the optimized E I ad of ( 111), (100), and (110) facets further demonstrated that the number of active crystal planes existed in Cu-CoS 2 -P can deliver a highly efficient catalytic activity toward I 3 − reduction, thus a PCE of 7.34% has been achieved when DSSCs assembled with Cu-CoS 2 -P, almost identical to that of the Pt electrode (7.37%).…”

Section: Heteroatom Effect On Sulfides (Oxides)mentioning

confidence: 99%

Review on Low‐Cost Counter Electrode Materials for Dye‐Sensitized Solar Cells: Effective Strategy to Improve Photovoltaic Performance

Wang

Zhao

Kan

et al. 2021

Adv Materials Inter

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The photoelectric conversion efficiency (PCE) of dye‐sensitized solar cells (DSSCs) can be remarkably improved by optimizing the catalytic activity and charge transfer ability of the counter electrode (CE) materials. The attentive hotspots of CE catalysts for DSSCs are to design multifunctional materials that balance the fabrication cost, environmental friendliness, PCE, and electrochemical stability, then to achieve the substitution of the benchmark Pt. In this review, the four effective strategies are highlighted for further improving the photovoltaic performance of the DSSCs based on low‐cost CE materials, such as heteroatom‐doped materials, development of noble metal‐free chalcogenides with well‐controlled facets, construction of heterostructure, and synthesis of composites with a synergistic effect. In some typical examples, the influence of these strategies on catalytic activity, charge transfer ability, and reaction mechanism are elucidated by the theoretical calculation. Then the research opportunities and the challenges for the high‐efficiency DSSCs based on low‐cost CE materials are presented.

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“…However, the large family of low-dimensional materials can be explored for developing more heterostructure photodetection devices. For example, other low-dimensional TMDCs such as TiX 2 , CoX 2 , NiX 2 , SnX 2 , NbX 2 , TaX 2 (X = S, Se, Te) [103][104][105][106][107][108], can be explored for developing new high-performance photodetectors. TMDCs are also advancing as multifunctional materials for future wearable electronic and optoelectronic devices as an inexpensive alternative to the costly manufactured semiconducting materials currently employed in the electronics industry.…”

Section: Brief Summarymentioning

confidence: 99%

Recent progress in optoelectronic applications of hybrid 2D/3D silicon-based heterostructures

et al. 2021

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Silicon-based semiconductor technology has made great breakthroughs in the past few decades, but it is reaching the physical limits of Moore's law. In recent years, the presence of two-dimensional (2D) materials was regarded as an opportunity to break the limitation of traditional siliconbased optoelectronic devices owing to their special structure and superior properties. In consideration of the widely studied hybrid integration of 2D material detectors and 3D siliconbased systems, in this paper, the basic properties of several 2D materials used in photodetectors are summarized. Subsequently, the progress in silicon photonic integrated photodetectors based on 2D materials is reviewed, followed by the summarization of the device structure and main performances. Then, the combination of some other traditional and 2D devices is discussed as a supplement. Finally, the prospective development of the hybrid 2D/3D silicon-based heterostructures is expected.

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Cu-doped CoS2 polyhedrons with high catalytic activity and long-term stability

Cited by 15 publications

References 26 publications

Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Interfacial Engineering of the Platinum/Molybdenum Disulfide/graphitic Carbon Nitride Composite for Enhanced Photocatalytic Hydrogen Production

Review on Low‐Cost Counter Electrode Materials for Dye‐Sensitized Solar Cells: Effective Strategy to Improve Photovoltaic Performance

Recent progress in optoelectronic applications of hybrid 2D/3D silicon-based heterostructures

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