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

Yao, Kun; Basnet, Pradip; Sessions, Henry; Larsen, George K.; Murph, Simona E.  Hunyadi; Zhao, Yiping

doi:10.1016/j.cattod.2015.10.026

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

Journal Article · Wed Nov 11 00:00:00 EST 2015 · Catalysis Today

DOI:https://doi.org/10.1016/j.cattod.2015.10.026· OSTI ID:1254431

Yao, Kun ^[1]; Basnet, Pradip ^[1]; Sessions, Henry ^[2]; Larsen, George K. ^[2]; Murph, Simona E. Hunyadi ^[3]; Zhao, Yiping ^[1]

Univ. of Georgia, Athens, GA (United States)
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Georgia Regents Univ, Augusta, GA (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Savannah River Site (SRS), Aiken, SC (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC09-08SR22470

OSTI ID:: 1254431

Alternate ID(s):: OSTI ID: 1373342

Report Number(s):: SRNL--STI-2015-00609; PII: S0920586115006847

Journal Information:: Catalysis Today, Journal Name: Catalysis Today Journal Issue: C Vol. 270; ISSN 0920-5861

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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