Confining nano-sized platinum in nitrogen doped ordered mesoporous carbon: An effective approach toward efficient and robust hydrogen evolution electrocatalyst

Yin, Yitong; Liu, Tingting; Liu, Dan; Wang, Zhao; Deng, Qibo; Qu, Deyu; Xie, Zhipeng; Tang, Haolin; Li, Junsheng

doi:10.1016/j.jcis.2018.06.096

Cited by 35 publications

(17 citation statements)

References 38 publications

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“…Decrease in platinum content with the increase in electrocatalytic activity was also reported for platinum nanoparticles dispersed on Ni(OH)2 [60][61][62], Ni3N [63] CoP [64], nitrogen-doped carbon/Ni nanofibers [65], nitrogen-doped ordered mesoporous carbon [66], sulfur-doped graphene [67] and Fe-doped α-Ni(OH)2 [68]. Similar synthetic procedures as those described in the preceding text were used for preparation of other supported PGMs or their alloys and composites with non-noble metals, including Pd@Cu(II) phthalocyanine/MOF [69], Ru nanoparticles supported on cobalt carbonate hydroxide nanowires [70], PtCu anchored on N-doped carbon nanofibers [71], and Co, Fe co-doped Ru on carbon [72].…”

Section: Supported Metallic Nanoparticlessupporting

confidence: 55%

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

Gutić¹,

Dobrota²,

Fako³

et al. 2020

Preprint

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Hydrogen evolution reaction (HER) is one of the most important reaction in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is impossible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and, recently emerging, single atom catalysts for HER.3 of 36 HER at single crystal surfaces and bulk surfacesA crystalline solid can be considered as a series of mutually parallel lattice planes, arranged in a periodic way. Close to the surface, the spatial arrangement of the lattice planes, their crystallographic structure, as well as the dynamics of the constituent atoms may differ from the corresponding features in the bulk [1]. Most clean metals show the tendency to minimize their surface energy. One of the mechanisms is relaxation, the shift of one or more lattice planes located near to the surface, usually perpendicularly to the surface, so that the interlayer distance changes compared to the bulk lattice. The other one is reconstruction -change in equilibrium positions and bonding of surface atoms so that the projection of bulk unit cell to the given surface does not correspond to the surface unit cell. Different crystallographic planes (with different Miller indices) of the same metal exhibit unequal surface densities (number of atoms per surface area), and therefore undergo surface relaxation/reconstruction to different extents [2]. For example, Pt(100) has lower surface density compared to densely packed Pt(111) and therefore has a stronger tendency to relax/reconstruct. Since the main driving force for the mentioned surface modifications is the low coordination number (non-saturation) of surface atoms, it is obvious that atom/molecule adsorption on clean metal surfaces can have a significant effect on its surface structure, inducing relaxation/reconstruction changes. This is of huge importance for HER, as it involves adsorbed atomic hydrogen (Hads) as an intermediate. Additionally, in an electrochemical system, the electrode will be modified by adsorption of "spectator" species (ions/molecules from the electrolyte), so HER will not be taking place on clean metal surfaces, but rather on modified ones. Obviously, there is a complex dynamic interplay between the catalyst surface, reactants, intermediates, and electrolyte.According to the Sabatier principle, the interaction of the reaction reactants/intermediates with the catalyst has to be optimal in strength. If it is too weak, the reactants will not bind to the catalyst and the reaction will not be able to take place. In...

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Section: Supported Metallic Nanoparticlessupporting

confidence: 55%

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

Gutić¹,

Dobrota²,

Fako³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Referring to reported electrochemical HER performances of noble‐metal‐NP‐based electrocatalysts, the as‐developed Au–Rh aerogel catalyst is among the most favorable ones with a high activity and fast kinetics (Figure 2j–l and Table S4, Supporting Information). [ 21–32 ] It is worth mentioning that, while quite a few noble‐metal‐based catalysts were investigated for HER across a wide range of pH values, only few can outperform commercial Pt/C in every environment. For example, ruthenium‐dots‐loaded self‐crosslinking carbon dots (Ru@SC‐CDs) performed slightly better than commercial Pt/C from the aspects of overpotential and exchange current density, while it is inferior to Pt/C in acid and neutral environment.…”

Section: Resultsmentioning

confidence: 99%

Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis

Jin

Hübner

et al. 2020

Advanced Energy Materials

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The advent of noble metal aerogels (NMAs), that feature the high catalytic activity of noble metals and unique structural attributes of aerogels, has stimulated research on a new class of outstanding electrocatalysts. However, limited by the available compositions, the explored electrocatalytic reactions on NMAs are highly restricted and certain important electrochemical processes have not been investigated. Here, an effective gelation approach is demonstrated by using a strong salting‐out agent (i.e., NH4F), thereby expanding the composition of NMAs to various multimetallic systems and providing a platform to investigate composition‐dependent electrocatalytic performance of NMAs. Combining structural features of aerogels and optimized chemical compositions, the Au–Pt and Au–Rh aerogel catalysts manifest remarkable pH‐universal (pH = 0–14) performance surpassing commercial Pt/C and many other nanoparticle (NP)‐based catalysts in the electrocatalytic oxygen reduction reaction, hydrogen evolution reaction, and water splitting, displaying enormous potential for the electrochemical hydrogen production, fuel cells, etc.

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“…Decrease in platinum content with the increase in electrocatalytic activity was also reported for platinum nanoparticles dispersed on Ni(OH) 2 [73][74][75], Ni 3 N [76] CoP [77], nitrogen-doped carbon/Ni nanofibers [78], nitrogen-doped ordered mesoporous carbon [79], sulfur-doped graphene [80], and Fe-doped α-Ni(OH) 2 [81]. Similar synthetic procedures as those described in the preceding text were used for preparation of other supported PGMs or their alloys and composites with non-noble metals, including Pd@Cu(II) phthalocyanine/MOF [82]; Ru nanoparticles supported on cobalt carbonate hydroxide nanowires [83]; PtCu anchored on N-doped carbon nanofibers [84]; and Co, Fe co-doped Ru on carbon [85].…”

Section: Supported Metallic Nanoparticlesmentioning

confidence: 73%

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

et al. 2020

View full text Add to dashboard Cite

Hydrogen evolution reaction (HER) is one of the most important reactions in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is not possible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and recently emerging, single-atom catalysts for HER.

show abstract

Confining nano-sized platinum in nitrogen doped ordered mesoporous carbon: An effective approach toward efficient and robust hydrogen evolution electrocatalyst

Cited by 35 publications

References 38 publications

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

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