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Photosensitized reduction of water to hydrogen using novel Maya blue-like organic–inorganic hybrid material

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Abstract.
On the basis of the understanding that membranes play an important role in the separation of the
intermediate photoproducts in the photosynthetic process, a novel efficient hydrogen evolution system
was constructed with Maya blue-like organic–inorganic hybrid material as a photocatalyst, in which
palygorskite acts as matrix and Eosin Y as a photosensitizer. Under visible light irradiation (λ>420 nm),
the highest rate of hydrogen evolution and apparent quantum yield are about 3247.2 μmol h−1 (g Eosin
Y)−1 and 12.5%, respectively. Negatively charged palygorskite particles could control the photosensitized
electron-transfer reaction by means of electrostatic interaction. Based on the activities of hydrogen
generation and the experimental measurements of UV–vis absorbance and fluorescence, a probable
mechanism for photosensitized hydrogen evolution was postulated.

Keywords:
Eosin Y
Palygorskite
Photosensitized hydrogen evolution
Visible light irradiation

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 333 (2009) 285–293

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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