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In Situ Time-Resolved X-ray Absorption Fine Structure and Small Angle X-ray Scattering Revealed an Unexpected Phase Structure Transformation during the Growth of Nickel Phosphide Nanoparticles
Tan, YY; Sun, DB; Yu, HY; Jiao, SQ; Gong, Y; Yan, S; Chen, ZJ; Xing, XQ; Mo, G; Cai, Q; Wu, ZH; Gong Y(宫宇); Chen ZJ(陈中军); Xing XQ(邢雪青); Mo G(默广); Cai Q(蔡泉); Wu ZH(吴忠华)
2018
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume122Issue:28Pages:16397-16405
SubtypeArticle
AbstractNickel phosphide (Ni-P) nanoparticles have been extensively studied because of their promising catalytic activities in both hydrogen evolution reaction and oxygen evolution reaction. However, controllable synthesis of the nickel phosphide catalyst is still a challenge because of its complex phase transformations during the synthesis procedure. Deep understanding of the nanoparticle formation mechanism should be taken into account for an efficient catalyst tailoring of size, shape, structure, and eventually performance. Unfortunately, there are only few reports regarding their formation processes. In this regard, we investigated the formation process of Ni-P nanoparticles by a conjunction of in situ X-ray absorption fine structure (XAFS) from the Ni K-edge, ex situ XAFS from the P K-edge, in situ small angle X-ray scattering, and high-resolution transmission electron microscopy techniques. A novel phase structure transformation was unraveled from views of evolutions of chemical valence, coordination structures, and size distributions along with the reaction time. The results demonstrated a four-stage formation mechanism of Ni-P nanoparticles: nucleation of crystalline Ni, nucleation of Ni-P, phase transformation from crystalline Ni to noncrystalline Ni-P, and growth of noncrystalline Ni-P nanoparticles. Furthermore, different growth manners were also observed at different growing stages. Our results shed light on efficient control of the phase structure, particle size, and compositions of nickel phosphide nanoparticles, which would enlighten and promote their further development.
DOI10.1021/acs.jpcc.8b03883
WOS KeywordMETAL NANOCLUSTER FORMATION ; HYDROGEN EVOLUTION REACTION ; NI-P NANOPARTICLES ; PLATINUM NANOPARTICLES ; CONTINUOUS NUCLEATION ; XAFS SPECTROSCOPY ; SOLID-SOLUTIONS ; MECHANISM ; TEMPERATURE ; CRYSTALLIZATION
Indexed BySCI ; EI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000439661000069
EI Accession Number20182705400060
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286139
Collection多学科研究中心
Corresponding AuthorWu ZH(吴忠华)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Tan, YY,Sun, DB,Yu, HY,et al. In Situ Time-Resolved X-ray Absorption Fine Structure and Small Angle X-ray Scattering Revealed an Unexpected Phase Structure Transformation during the Growth of Nickel Phosphide Nanoparticles[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(28):16397-16405.
APA Tan, YY.,Sun, DB.,Yu, HY.,Jiao, SQ.,Gong, Y.,...&吴忠华.(2018).In Situ Time-Resolved X-ray Absorption Fine Structure and Small Angle X-ray Scattering Revealed an Unexpected Phase Structure Transformation during the Growth of Nickel Phosphide Nanoparticles.JOURNAL OF PHYSICAL CHEMISTRY C,122(28),16397-16405.
MLA Tan, YY,et al."In Situ Time-Resolved X-ray Absorption Fine Structure and Small Angle X-ray Scattering Revealed an Unexpected Phase Structure Transformation during the Growth of Nickel Phosphide Nanoparticles".JOURNAL OF PHYSICAL CHEMISTRY C 122.28(2018):16397-16405.
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