Unveiling the role of carbonate in nickel-based plasmonic core@shell hybrid nanostructure for photocatalytic water splitting

Talebi, Parisa; Kistanov, Andrey A.; Rani, Ekta; Singh, Harishchandra; Pankratov, V. A.; Pankratova, Viktorija; King, Graham; Huttula, Marko; Cao, Wei

doi:10.1016/j.apenergy.2022.119461

Cited by 21 publications

(23 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rather than through the due channel of S‐Ni bonding and Au buffer in MoS 2 ‐Au‐Ni composites, charge migrations occur mainly through the Ag buffer, either intercalated between Ni and side or basal plane of the MoS 2 flakes. The nickel‐MoS 2 contact is different from the Ni@NiO/NiCO 3 core‐shell where again the clear charge transfers are found between the components from the core to the shell 15 . The impurity levels emerged at the alloy regions 33 were not visible here since most of the microstructural and electronic structures of the three components do not show clear changes.…”

Section: Resultsmentioning

confidence: 77%

“…17,31 After thermodynamic clear charge transfers are found between the components from the core to the shell. 15 The impurity levels emerged at the alloy regions 33 were not visible here since most of the microstructural and electronic structures of the three components do not show clear changes. Finally, no electron-hole annihilation happens at the interfaces between Ni-Ag, or Ag-MoS 2 .…”

Section: Resultsmentioning

confidence: 80%

“…13 For instance, catalytic performances of the nickel core-shell composites, arisen from surface plasmonic resonance, 14 were affected by the particle sizes and extrinsic treatments to change the shell structures. 15 Though the Ni-MoS 2 composites have been constructed by using the noble metals as nano-glues, 16,17 the effects of the Ni sizes on the electronic properties of the heterostructures remain elusive.…”

Section: Introductionmentioning

confidence: 99%

“…Especially, Ni as an essential element, has been taken on an attractive prospect, because of the structural stability, facile preparation of Ni‐based structure, and high performance of its metallic and compositional forms in photocatalysis 13 . For instance, catalytic performances of the nickel core‐shell composites, arisen from surface plasmonic resonance, 14 were affected by the particle sizes and extrinsic treatments to change the shell structures 15 . Though the Ni‐MoS 2 composites have been constructed by using the noble metals as nano‐glues, 16,17 the effects of the Ni sizes on the electronic properties of the heterostructures remain elusive.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems

et al. 2022

Self Cite

View full text Add to dashboard Cite

Using heterogeneous photocatalysts for harvesting sunlight and converting it for water remediation and splitting are promising to mitigate the possible crisis of environment and energy. Among various composites, the MoS2‐based heterostructures and Ni‐based systems exhibit unique electronic, optical properties and redox capabilities, enabling their roles as photocatalysts. Herein, the impacts of chemical environments on the Ni electronic structures within the MoS2‐Ag‐Ni ternary systems are studied via X‐ray photoemission electron spectroscopy (X‐PEEM). Ni nanoparticles with two different sizes of 70 and 200 nm were loaded to MoS2 flakes with silver buffers as bridges. Heterostructures with a nominal mol percentage of (MoS2)77Ag3.7Ni19.3 were synthesized through an ultrasound‐assisted wet method. The oxidation states and various interfacial interactions of Ni with MoS2 in MoS2‐Ag‐Ni ternary composite are spectromicroscopically determined, combining the X‐ray absorption spectroscopy near Ni L‐edges and the imaging capability of the X‐PEEM. Results showed that Ni mainly retrains its chemical states of metal and native oxidizations without observable electronic features subjected to bonding with the sulfur from the MoS2 flakes. The charge migration channel set up by the Ag buffer thus contributes to electron–hole migrations that facilitate the photocatalytic performance of the ternary system eventually.

show abstract

Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…[28][29][30][31] The latter probes the possible charge migrations next to the luminescent centers, yet, giving the possible charge transfer between the heterojunctional counterparts. [32] Figure 1 shows the results of the PL spectroscopy. In Figure 1a, the TDPL spectra of the samples were measured in the temperature range of 10-160 K and in the wavelength range of 450-700 nm.…”

Section: Physical Properties Of the Studied Materialsmentioning

confidence: 99%

Filterless Visible‐Range Color Sensing and Wavelength‐Selective Photodetection Based on Barium/Nickel Codoped Bandgap‐Engineered Potassium Sodium Niobate Ferroelectric Ceramics

et al. 2022

Self Cite

View full text Add to dashboard Cite

Photosensors, photodetectors, or color sensors are key components for various optical and optoelectronic applications. Semiconductor‐based photodetection has been a dominator which is excellent at measuring the photon intensity of incident light. However, the wavelength of the incident light to be measured must be known beforehand and it mostly depends on auxiliary methods to filter unknown wavelengths. Herein, an alternative but simple mechanism that is using a monolithic, bandgap‐engineered photoferroelectric ceramic to blindly determine the wavelength and intensity of incident light at the same time is demonstrated. The photoferroelectric compound is Ba‐ and Ni‐codoped (K,Na)NbO3 exhibiting a direct bandgap of ≈2 eV and a spontaneous polarization of ≈0.25 C m−2. The band–band charge carrier transition is confirmed by multiple characterization methods of photoluminescence, photodielectric spectroscopy, and photoconductivity. The existent optoelectrical cumulative effect enabled by the simultaneous narrow bandgap and strong ferroelectricity allows to reliably distinguish the wavelengths of 405, 552, and 660 nm as well as the power density ranging from ≈0.1 to 10 W cm−2, with the photoresponsivity of up to 60 μA W−1. Consequently, this work proposes an alternative to semiconductor‐based counterparts for filterless, wavelength‐selective photodetection and color sensing.

show abstract

Photochemical Synthesis of Porous Triazine‐/Heptazine‐Based Carbon Nitride Homojunction for Efficient Overall Water Splitting

et al. 2023

View full text Add to dashboard Cite

Porous triazine‐/heptazine‐based carbon nitride (THCN) homojunction with chloride (Cl) doping was synthesized by a simple, one‐step photochemical synthesis route for efficient visible‐light‐driven overall water splitting. The phase ratio of triazine‐based carbon nitride (TCN) and heptazine‐based carbon nitride (HCN), texture and morphology of the THCN isotype junction were finely tuned by varying ultraviolet irradiation time and washing solvents. After washing with acetonitrile, the resulting porous THCN nanosheets with 48 h irradiation contain 21 wt % TCN and 79 wt % HCN units and reveal a significantly improved photocatalytic performance with H2 and O2 production rates up to 7.9 and 4.2 μmol h−1, respectively, about 3.8 times higher than that of THCN prepared by 36 h illumination. The dual‐phase interaction, holey structure, and Cl dopants favor the exposure of active sites, extended visible‐light harvesting, accelerated charge transfer, and enhanced photoreduction ability, thereby improving photocatalytic activity.

show abstract

Unveiling the role of carbonate in nickel-based plasmonic core@shell hybrid nanostructure for photocatalytic water splitting

Cited by 21 publications

References 49 publications

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems

Filterless Visible‐Range Color Sensing and Wavelength‐Selective Photodetection Based on Barium/Nickel Codoped Bandgap‐Engineered Potassium Sodium Niobate Ferroelectric Ceramics

Photochemical Synthesis of Porous Triazine‐/Heptazine‐Based Carbon Nitride Homojunction for Efficient Overall Water Splitting

Contact Info

Product

Resources

About

Unveiling the role of carbonate in nickel-based plasmonic core@shell hybrid nanostructure for photocatalytic water splitting

Cited by 21 publications

References 49 publications

Spectromicroscopic determinations of chemical environments of Ni in MoS2‐Ag‐Ni ternary systems

Spectromicroscopic determinations of chemical environments of Ni in MoS2‐Ag‐Ni ternary systems

Filterless Visible‐Range Color Sensing and Wavelength‐Selective Photodetection Based on Barium/Nickel Codoped Bandgap‐Engineered Potassium Sodium Niobate Ferroelectric Ceramics

Photochemical Synthesis of Porous Triazine‐/Heptazine‐Based Carbon Nitride Homojunction for Efficient Overall Water Splitting

Contact Info

Product

Resources

About

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems

Spectromicroscopic determinations of chemical environments of Ni in MoS₂‐Ag‐Ni ternary systems