TY - JOUR
T1 - Supported single Fe atoms prepared via atomic layer deposition for catalytic reactions
AU - Wang, Xiaofeng
AU - Jin, Baitang
AU - Jin, Ye
AU - Wu, Tianpin
AU - Ma, Lu
AU - Liang, Xinhua
N1 - Publisher Copyright:
© 2020 American Chemical Society
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Atomic layer deposition
KW - CO oxidation
KW - Iron
KW - Photocatalytic degradation
KW - Single-atom catalyst
UR - https://www.scopus.com/pages/publications/85089747397
U2 - 10.1021/acsanm.0c00146
DO - 10.1021/acsanm.0c00146
M3 - Article
AN - SCOPUS:85089747397
SN - 2574-0970
VL - 3
SP - 2867
EP - 2874
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 3
ER -