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Supported Single Fe Atoms Prepared via Atomic Layer Deposition for Catalytic Reactions

Journal Article · · ACS Applied Nano Materials
 [1];  [2];  [2];  [3];  [3];  [2]
  1. Missouri Univ. of Science and Technology, Rolla, MO (United States); Dalian Maritime Univ. (China)
  2. Missouri Univ. of Science and Technology, Rolla, MO (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

In this work, we report a general strategy to synthesize Fe single-atom catalysts (SACs) on various substrates (e.g., multiwalled carbon nanotubes, SiO2, and TiO2) with high Fe loading (>1.5 wt %) by atomic layer deposition (ALD) through optimization of ferrocene (Fe precursor) dose time. Fe/SiO2 and Fe/TiO2 SACs were used for CO oxidation reactions and catalytic degradation of a methylene blue (MB) solution, respectively. Compared with reported iron oxide catalysts, the efficiency of Fe/SiO2 for CO oxidation was more than 2 orders of magnitude higher than the reported values. The photocatalysis experiment demonstrated that TiO2 nanoparticles, deposited with two cycles of Fe ALD, showed the highest activity and had a more than 6-fold photocatalytic activity enhancement over pure TiO2 for the degradation of MB. This universal method, optimized Fe ALD, expands the potential applications of Fe SACs on different substrates.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1767141
Journal Information:
ACS Applied Nano Materials, Journal Name: ACS Applied Nano Materials Journal Issue: 3 Vol. 3; ISSN 2574-0970
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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