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Title: Fe2O3–TiO2 core–shell nanorod arrays for visible light photocatalytic applications

By using the glancing angle deposition technique and post-deposition annealing, Fe2O3–TiO2 core-shell nanorod arrays with specific crystalline states can be designed and fabricated. The Fe2O3–TiO2 core-shell samples annealed at temperatures greater than 450°C formed α-Fe2O3 and anatase TiO2, and showed higher catalytic efficiency for the degradation of methylene blue (MB) under visible light illumination when compared with pure anatase TiO2 or α-Fe2O3 nanorod arrays. Solar conversion of carbon dioxide and water vapor in the presence of Fe2O3–TiO2 core-shell nanorod arrays was also investigated. Carbon monoxide, hydrogen, methane, and methanol along with other hydrocarbons were produced after only several hours’ exposure under ambient sunlight. It was determined that the core-shell structure showed greater efficiency for solar CO2 conversion than the pure TiO2 nanorod arrays.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [1]
  1. Univ. of Georgia, Athens, GA (United States)
  2. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
  3. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Georgia Regents Univ, Augusta, GA (United States)
Publication Date:
OSTI Identifier:
1254431
Report Number(s):
SRNL--STI-2015-00609
Journal ID: ISSN 0920-5861; PII: S0920586115006847
Grant/Contract Number:
AC09-08SR22470
Type:
Accepted Manuscript
Journal Name:
Catalysis Today
Additional Journal Information:
Journal Volume: 270; Journal Issue: C; Journal ID: ISSN 0920-5861
Publisher:
Elsevier
Research Org:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
Glancing angle deposition; nanorod arrays; core-shell Fe2O3-TiO2.