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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Photocatalytic H2 generation on macro-mesoporous oxide-supported Pt nanoparticles

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Title
Photocatalytic H2 generation on macro-mesoporous oxide-supported Pt nanoparticles
Author(s)
Song Yi Moon; Brundabana Naik; An K.; Sun Mi Kim; Jeong Young Park
Publication Date
2016-02
Journal
RSC ADVANCES, v.6, no.22, pp.18198 - 18203
Publisher
ROYAL SOC CHEMISTRY
Abstract
A series of photocatalysts were prepared with crystalline macro-mesoporous oxides and Pt nanoparticles (Pt-TiO2, Pt-Ta2O5, Pt-Nb2O5, Pt-ZrO2, and Pt-Al2O3). Transmission electron microscopy, X-ray diffraction, and N2 adsorption-desorption isotherms reveal that the oxides have prominent macro- and mesoporosity in the crystalline walls. The high surface area and crystalline walls of the oxides play significant roles in photocatalytic H2 production. Pt-TiO2 catalysts show enhanced photocatalytic water splitting efficiency for H2 generation (solar energy conversion efficiency of 1.06%) under a 150 W and 1.5 AM solar simulator. Pt-Ta2O5 and Pt-Nb2O5 also generate noticeable photocatalytic activities of 0.21% and 0.16%, respectively. The enhanced photocatalytic activity is attributed to correct band alignment of the porous oxides with absorption in the UV-visible range, and ordered macro- and mesoporosity of the crystalline oxides for efficient charge transfer. © The Royal Society of Chemistry 2016
URI
https://pr.ibs.re.kr/handle/8788114/2691
ISSN
2046-2069
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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