In Situ XRay Absorption Fine Structure Studies on the Structure of Ni2P Supported on SiO2

Kawai, Takeshi; Sato, Shino; Chun, Wang‐Jae; Asakura, Kiyotaka; Bando, Kyoko K.; Matsui, Takashi; Yoshimura, Y.; Kubota, Takeshi; Okamoto, Yasuaki; Lee, Yong‐Kul; Oyama, Tetsuya

doi:10.1238/physica.topical.115a00822

Cited by 6 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ex situ , in situ , and operando spectra of the film all exhibited a pre-edge feature near 7711 eV that was similar to, but less intense than, that of the Co metal standard. This feature can be attributed to metal-to-ligand charge transfer, and resembles the pre-edge feature observed for Ni K-edge XANES spectra of Ni 2 P. , The ex situ spectrum also exhibited a white line feature at 7727 eV similar to that observed for the CoO standard material, indicating the presence of oxidized Co in the as-prepared material that was not detectable by XANES in the active electrocatalyst.…”

supporting

confidence: 53%

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

Saadi¹,

Carim²,

Drisdell

et al. 2017

J. Am. Chem. Soc.

148

View full text Add to dashboard Cite

Transition metal phosphides exhibit high catalytic activity toward the electrochemical hydrogenevolution reaction (HER) and resist chemical corrosion in acidic solutions. For example, an electrodeposited CoP catalyst exhibited an overpotential, η, of −η < 100 mV at a current density of −10 mA cm −2 in 0.500 M H 2 SO 4 (aq). To obtain a chemical description of the material asprepared and also while effecting the HER in acidic media, such electrocatalyst films were investigated using Raman spectroscopy and X-ray absorption spectroscopy both ex situ as well as under in situ and operando conditions in 0.500 M H 2 SO 4 (aq). Ex situ analysis using the tandem spectroscopies indicated the presence of multiple ordered and disordered phases that contained both near-zerovalent and oxidized Co species, in addition to reduced and oxygenated P species. Operando analysis indicated that the active electrocatalyst was primarily amorphous and predominantly consisted of near-zerovalent Co as well as reduced P.

show abstract

supporting

confidence: 53%

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

Saadi¹,

Carim²,

Drisdell

et al. 2017

J. Am. Chem. Soc.

148

View full text Add to dashboard Cite

show abstract

“…The H 2 consumption confirmed the occurrence of oxidations. This oxidation is consistent with Kawai et al’s research . In the TPR pattern of NiPO-400, three peaks were recognized.…”

Section: Resultssupporting

confidence: 92%

A Potential Regularity for Enhancing the Hydrogenation Properties of Ni₂P

Guan

Wei

et al. 2015

J. Phys. Chem. C

View full text Add to dashboard Cite

A regularity for transferring molecular hydrogen to active atomic hydrogen has the potential to unlock some key steps in petrochemical processing and in the synthesis of many compounds. Ni 2 P, which is regarded as a promising next-generation catalyst to replace noble metals in heterogeneous catalysts, is discussed in this paper. In this study, a potential modification regularity was inferred and proved for enhancing hydrogenation properties. This regularity is "modified elements with relatively high electronegativity will favor an increase in the hydrogenation activity, provided crystal metallic properties are retained". To obtain this regularity, three steps were followed. First, calculations were performed to infer a potential regularity for enhancing hydrogenation activity. Then, two series of catalysts were designed based on the calculations. Second, temperature-programmed oxidation, thermogravimetry, X-ray diffraction, and temperatureprogrammed reduction analyses were performed to verify the modification. In addition, catalysts were further studied by scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. Finally, the modified catalysts were then evaluated by hydrogenation reaction. Among these modified catalysts, the most fitting catalyst exhibited a hydrogenation catalytic activity 22.1 times that of Ni 2 P. As the catalytic promotion confirmed, the inferred regularity could potentially be applied to hydrogenation catalyst design.

show abstract

“…19 Among transition metal phosphides, nickel phosphides, as an important subclass, have garnered considerable attention. As a novel material, Ni 2 P is not only widely used in catalysis 20,21 but also holds promising applications in optoelectronic devices 22 and magnetic components. Therefore, the composite material of Ni 2 P and MOFs holds tremendous potential for applications in the field of nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Research on the preparation and performance of Ni₂P@MOF composite nanomaterials

Zhang,

Chen,

Zhou

et al. 2024

Nanoscale

View full text Add to dashboard Cite

show abstract

In Situ XRay Absorption Fine Structure Studies on the Structure of Ni2P Supported on SiO2

Cited by 6 publications

References 0 publications

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

A Potential Regularity for Enhancing the Hydrogenation Properties of Ni₂P

Research on the preparation and performance of Ni₂P@MOF composite nanomaterials

Contact Info

Product

Resources

About

In Situ XRay Absorption Fine Structure Studies on the Structure of Ni2P Supported on SiO2

Cited by 6 publications

References 0 publications

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

Operando Spectroscopic Analysis of CoP Films Electrocatalyzing the Hydrogen-Evolution Reaction

A Potential Regularity for Enhancing the Hydrogenation Properties of Ni2P

Research on the preparation and performance of Ni2P@MOF composite nanomaterials

Contact Info

Product

Resources

About

A Potential Regularity for Enhancing the Hydrogenation Properties of Ni₂P

Research on the preparation and performance of Ni₂P@MOF composite nanomaterials