High-Density Ultra-small Clusters and Single-Atom Fe Sites Embedded in Graphitic Carbon Nitride (g-C3N4) for Highly Efficient Catalytic Advanced Oxidation Processes

An, Sufeng; Zhang, Guanghui; Wang, Tingwen; Zhang, Wenna; Li, Keyan; Song, Chunshan; Miller, Jeffrey T.; Miao, Shu; Wang, Junhu; Guo, Xinwen

doi:10.1021/acsnano.8b04693

Title: High-Density Ultra-small Clusters and Single-Atom Fe Sites Embedded in Graphitic Carbon Nitride (g-C₃N₄) for Highly Efficient Catalytic Advanced Oxidation Processes

Journal Article · Wed Sep 05 00:00:00 EDT 2018 · ACS Nano

DOI:https://doi.org/10.1021/acsnano.8b04693· OSTI ID:1476106

An, Sufeng ^[1];

^[2]; Wang, Tingwen ^[1]; Zhang, Wenna ^[3]; Li, Keyan ^[1];

^[4]; Miller, Jeffrey T. ^[5]; Miao, Shu ^[6];

^[6];

^[1]

Dalian Univ. of Technology (People's Republic of China)
Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
Dalian Univ. of Technology (People's Republic of China); Pennsylvania State Univ., University Park, PA (United States)
Purdue Univ., West Lafayette, IN (United States)
Chinese Academy of Sciences (CAS), Dalian (PR China). Dalian Inst. of Chemical Physics

Ultra-small metal clusters have attracted great attention owing to their superior catalytic performance and extensive application in heterogeneous catalysis. However, the synthesis of high-density metal clusters is very challenging due to their facile aggregation. In this work, one-step pyrolysis was used to synthesize ultra-small clusters and single-atom Fe sites embedded in graphitic carbon nitride with high density (iron loading up to 18.2 wt %), evidenced by high-angle annular dark field-scanning transmission electron microscopy, X-ray absorption spectroscopy, X-ray photoelectron spectroscopy, and ⁵⁷Fe Mössbauer spectroscopy. The catalysts exhibit enhanced activity and stability in degrading various organic samples in advanced oxidation processes. The drastically increased metal site density and stability provide useful insights into the design and synthesis of cluster catalysts for practical application in catalytic oxidation reactions.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Organization:: National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; Qianren Program of China; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); Canadian Light Source

Grant/Contract Number:: 21401017; 21236008; DUT16LK12; AC02-06CH11357

OSTI ID:: 1476106

Journal Information:: ACS Nano, Vol. 12, Issue 9; ISSN 1936-0851

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: ENGLISH

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Cited by: 320 works

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ultra-small clusters
single atoms
FeNx/g-C3N4
high-density
AOPs

Title: High-Density Ultra-small Clusters and Single-Atom Fe Sites Embedded in Graphitic Carbon Nitride (g-C3N4) for Highly Efficient Catalytic Advanced Oxidation Processes

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