Robust photocatalytic hydrogen evolution over amorphous ruthenium phosphide quantum dots modified g-C3N4 nanosheet

Wang, Junfang; Chen, Juan; Wang, Peifang; Hou, Jun; Wang, Chao; Ao, Yanhui

doi:10.1016/j.apcatb.2018.08.048

Cited by 195 publications

(55 citation statements)

References 66 publications

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“…So far, many strategies have been developed to improve the light absorption ability of photocatalysts including surface modification, heteroatom doping, plasmonic metal deposition and so on. [ 99–104 ] In particular, compositing the semiconductor with carbonaceous motifs (such as graphene, [ 16 ] graphdiyne, [ 105 ] amorphous carbon, [ 106 ] MXene, [ 107 ] etc.) has been recognized to significantly improve the light absorption efficiency owing to their black color characteristic.…”

Section: Main Features Of 3d Graphenementioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

212

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Hydrogen (H2) has been deemed as the most promising and valuable alternative to nonrenewable fossil fuels. Photocatalytic and electrocatalytic water splitting are considered to be the most efficient and environmentally friendly approaches for the sustainable H2 evolution reaction (HER). Graphene with a 3D framework has been utilized for the HER due to its unique structure and properties, including its hierarchical network, large specific surface area, diverse pore distribution, outstanding light absorption ability, and excellent electrical conductivity. The large specific surface area and hierarchically porous structure of 3D graphene can not only maximize the exposure of active sites but also promote electron transfer and gas product diffusion. In addition, the free‐standing 3D graphene monolith is easily recycled compared with powder phase support, which can prevent the loss of active catalysts. By making full use of the aforementioned merits, 3D graphene‐based composite materials show great promise as high‐performance catalysts toward photocatalytic and electrocatalytic HER. In this review, recent advances in fabricating 3D graphene‐based composite materials and their applications in both photocatalytic and electrocatalytic HER are summarized and discussed. Furthermore, the current challenges and future vision associated with the design, fabrication, and integration of 3D graphene‐based composite materials toward HER are put forward.

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Section: Main Features Of 3d Graphenementioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

212

View full text Add to dashboard Cite

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“…However, the unfavorable aggregation and coarsening of Ru in synthesizing process have significantly affected its activity and stability . To overcome this dilemma, some proper supports, such as carbon materials, metal oxide, and hydroxides, are introduced to anchor and stabilize ultra‐small Ru species . More than acting as anchoring sites, these supports also have a significant impact on the catalyst activity and stability of Ru species …”

Section: Figurementioning

confidence: 99%

“…[23,24] To overcome this dilemma, some proper supports, such as carbon materials, metal oxide, and hydroxides, are introduced to anchor and stabilize ultrasmall Ru species. [25][26][27][28][29] More than acting as anchoring sites, these supports also have a significant impact on the catalyst activity and stability of Ru species. [30,31] Transition metal nitrides (TMNs), known as its special electronic structure, have attracted considerable attention in energy fields.…”

mentioning

confidence: 99%

Synthesis of Ru‐Doped VN by a Soft‐Urea Pathway as an Efficient Catalyst for Hydrogen Evolution

et al. 2020

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Unraveling the effect of metal doping on the intrinsic activity of metal nitride remains a grand challenge. Herein, Ru (Rh)‐doped vanadium nitride are successfully synthesized via a simple soft‐urea pathway. In comparison, the Ru‐doped VN electrocatalyst exhibits much better HER performance than Rh‐doped VN electrocatalysts. The optimal Ru‐VN catalyst delivers a low overpotential of 134 (144) mV at current density of 10 mA cm−2, and a low Tafel slope of 35 (73) mV dec−1 in acidic (alkaline) condition. Such excellent performance can be attributed to the unique synergetic effect between Ru and VN. Moreover, moderate Ru dopant can effectively promote the HER kinetics of VN, resulting in mechanism transformation of hydrogen evolution from Volmer‐Heyrovsky to Volmer‐Tafel route, especially in acidic condition. This simple and facile strategy can be utilized to fabricate a series of Ru‐doped nitrides, which can be applied in energy conversion fields.

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“…According to the previous reports, compared with crystalline cocatalyst materials, amorphous cocatalysts usually show a higher H 2 -evolution activity because of the highly irregular structure and abundant unsaturated or defected atoms, which can serve as the ideal H 2 -evoluion active sites [48,49]. In this work, the Ni-P alloy with amorphous structure, as a highly efficient H 2 -evolution cocatalyst, was efficiently deposited on the g-C 3 N 4 surface through a Ni-P (TEOA)-mediated photodeposition method.…”

Section: Introductionmentioning

confidence: 99%

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

Gao

et al. 2020

Sci. China Mater.

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Developing efficient, stable, and low-cost novel electron-cocatalysts is crucial for photocatalytic hydrogen evolution reaction. Herein, amorphous NiP alloy particles were successfully modified onto g-C 3 N 4 to construct the Ni-P/ g-C 3 N 4 photocatalyst through a simple and green triethanolamine (TEOA)-mediated photodeposition method. It was found that the TEOA could serve as an excellent complexing agent to coordinate with Ni 2+ to form [Ni(TEOA)] 2+ complex, which can promote the rapid and effective deposition of amorphous NiP alloy on the g-C 3 N 4 surface. Photocatalytic tests suggest that the hydrogen-evolution performance of g-C 3 N 4 can be greatly promoted through integrating amorphous NiP alloy. Especially, the Ni-P/g-C 3 N 4 (5 wt%) exhibits the superior H 2-generation activity (118.2 μmol h −1 g −1), which is almost 35.8 times that of bare g-C 3 N 4. Furthermore, the amorphous NiP alloy cocatalyst can also serve as the general hydrogen-production cocatalyst to greatly enhance the photocatalytic performance of traditional semiconductor materials such as TiO 2 and CdS. Based on the present results, the mechanism of the amorphous NiP alloy as the high-efficiency electron transfer medium was proposed for the boosted H 2generation rate. The present facile route may broaden the horizons for the efficient development of highly active cocatalysts in photocatalytic field.

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Robust photocatalytic hydrogen evolution over amorphous ruthenium phosphide quantum dots modified g-C3N4 nanosheet

Cited by 195 publications

References 66 publications

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Synthesis of Ru‐Doped VN by a Soft‐Urea Pathway as an Efficient Catalyst for Hydrogen Evolution

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

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Robust photocatalytic hydrogen evolution over amorphous ruthenium phosphide quantum dots modified g-C3N4 nanosheet

Cited by 195 publications

References 66 publications

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

Synthesis of Ru‐Doped VN by a Soft‐Urea Pathway as an Efficient Catalyst for Hydrogen Evolution

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

Contact Info

Product

Resources

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3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst