Lanthanoid oxide layers on rhodium-loaded (Ga1-xZn x)(N1-xOx) photocatalyst as a modifier for overall water splitting under visible-light irradiation

Masaaki Yoshida; Kazuhiko Maeda; Daling Lu; Jun Kubota; Kazunari Domen

doi:10.1021/jp402240d

Lanthanoid oxide layers on rhodium-loaded (Ga_1-xZn _x)(N_1-xO_x) photocatalyst as a modifier for overall water splitting under visible-light irradiation

Masaaki Yoshida, Kazuhiko Maeda, Daling Lu, Jun Kubota, Kazunari Domen

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

Lanthanoid oxide modifier layers were applied to Rh metal nanoparticles on (Ga_1-xZn_x)(N_1-xO_x) photocatalyst for overall water splitting under visible-light irradiation. Structural analysis by transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy revealed that lanthanoid(III) oxide layers coated the Rh nanoparticles on (Ga _1-xZn_x)(N_1-xO_x), although they were also deposited directly on the (Ga_1-xZn_x)(N _1-xO_x) surface. Certain lanthanoid oxide layers (La, Pr, Sm, Gd, and Dy) functioned as modifiers for Rh-metal/(Ga_1-xZn _x)(N_1-xO_x) to produce H₂ and O ₂ gases, although the Rh-metal/(Ga_1-xZn _x)(N_1-xO_x) photocatalyst exhibited little activity for overall water splitting due to rapid water formation from H ₂ and O₂ on Rh. Ce and Eu oxide layers showed no photocatalytic activity, most likely due to their ability to capture photoexcited electrons from Rh-metal/(Ga_1-xZn_x)(N _1-xO_x). The enhancement of photocatalytic activity by lanthanoid oxide loading was shown to be dependent on the formation of redox-inactive lanthanoid(III) oxide layers on the Rh nanoparticles, which effectively suppresses the backward water formation reaction to enable H ₂ evolution on Rh.

Original language	English
Pages (from-to)	14000-14006
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	117
Issue number	27
DOIs	https://doi.org/10.1021/jp402240d
Publication status	Published - 2013 Jul 11

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

Access to Document

10.1021/jp402240d

Fingerprint Dive into the research topics of 'Lanthanoid oxide layers on rhodium-loaded (Ga1-xZn x)(N1-xOx) photocatalyst as a modifier for overall water splitting under visible-light irradiation'. Together they form a unique fingerprint.

Cite this

Lanthanoid oxide layers on rhodium-loaded (Ga_1-xZn _x)(N_1-xO_x) photocatalyst as a modifier for overall water splitting under visible-light irradiation. / Yoshida, Masaaki; Maeda, Kazuhiko; Lu, Daling; Kubota, Jun; Domen, Kazunari.

In: Journal of Physical Chemistry C, Vol. 117, No. 27, 11.07.2013, p. 14000-14006.

Research output: Contribution to journal › Article › peer-review

@article{4299fe73da3c43929fb574848c6bd484,

title = "Lanthanoid oxide layers on rhodium-loaded (Ga1-xZn x)(N1-xOx) photocatalyst as a modifier for overall water splitting under visible-light irradiation",

abstract = "Lanthanoid oxide modifier layers were applied to Rh metal nanoparticles on (Ga1-xZnx)(N1-xOx) photocatalyst for overall water splitting under visible-light irradiation. Structural analysis by transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy revealed that lanthanoid(III) oxide layers coated the Rh nanoparticles on (Ga 1-xZnx)(N1-xOx), although they were also deposited directly on the (Ga1-xZnx)(N 1-xOx) surface. Certain lanthanoid oxide layers (La, Pr, Sm, Gd, and Dy) functioned as modifiers for Rh-metal/(Ga1-xZn x)(N1-xOx) to produce H2 and O 2 gases, although the Rh-metal/(Ga1-xZn x)(N1-xOx) photocatalyst exhibited little activity for overall water splitting due to rapid water formation from H 2 and O2 on Rh. Ce and Eu oxide layers showed no photocatalytic activity, most likely due to their ability to capture photoexcited electrons from Rh-metal/(Ga1-xZnx)(N 1-xOx). The enhancement of photocatalytic activity by lanthanoid oxide loading was shown to be dependent on the formation of redox-inactive lanthanoid(III) oxide layers on the Rh nanoparticles, which effectively suppresses the backward water formation reaction to enable H 2 evolution on Rh.",

author = "Masaaki Yoshida and Kazuhiko Maeda and Daling Lu and Jun Kubota and Kazunari Domen",

year = "2013",

month = jul,

day = "11",

doi = "10.1021/jp402240d",

language = "English",

volume = "117",

pages = "14000--14006",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "27",

}

TY - JOUR

T1 - Lanthanoid oxide layers on rhodium-loaded (Ga1-xZn x)(N1-xOx) photocatalyst as a modifier for overall water splitting under visible-light irradiation

AU - Yoshida, Masaaki

AU - Maeda, Kazuhiko

AU - Lu, Daling

AU - Kubota, Jun

AU - Domen, Kazunari

PY - 2013/7/11

Y1 - 2013/7/11

N2 - Lanthanoid oxide modifier layers were applied to Rh metal nanoparticles on (Ga1-xZnx)(N1-xOx) photocatalyst for overall water splitting under visible-light irradiation. Structural analysis by transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy revealed that lanthanoid(III) oxide layers coated the Rh nanoparticles on (Ga 1-xZnx)(N1-xOx), although they were also deposited directly on the (Ga1-xZnx)(N 1-xOx) surface. Certain lanthanoid oxide layers (La, Pr, Sm, Gd, and Dy) functioned as modifiers for Rh-metal/(Ga1-xZn x)(N1-xOx) to produce H2 and O 2 gases, although the Rh-metal/(Ga1-xZn x)(N1-xOx) photocatalyst exhibited little activity for overall water splitting due to rapid water formation from H 2 and O2 on Rh. Ce and Eu oxide layers showed no photocatalytic activity, most likely due to their ability to capture photoexcited electrons from Rh-metal/(Ga1-xZnx)(N 1-xOx). The enhancement of photocatalytic activity by lanthanoid oxide loading was shown to be dependent on the formation of redox-inactive lanthanoid(III) oxide layers on the Rh nanoparticles, which effectively suppresses the backward water formation reaction to enable H 2 evolution on Rh.

AB - Lanthanoid oxide modifier layers were applied to Rh metal nanoparticles on (Ga1-xZnx)(N1-xOx) photocatalyst for overall water splitting under visible-light irradiation. Structural analysis by transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy revealed that lanthanoid(III) oxide layers coated the Rh nanoparticles on (Ga 1-xZnx)(N1-xOx), although they were also deposited directly on the (Ga1-xZnx)(N 1-xOx) surface. Certain lanthanoid oxide layers (La, Pr, Sm, Gd, and Dy) functioned as modifiers for Rh-metal/(Ga1-xZn x)(N1-xOx) to produce H2 and O 2 gases, although the Rh-metal/(Ga1-xZn x)(N1-xOx) photocatalyst exhibited little activity for overall water splitting due to rapid water formation from H 2 and O2 on Rh. Ce and Eu oxide layers showed no photocatalytic activity, most likely due to their ability to capture photoexcited electrons from Rh-metal/(Ga1-xZnx)(N 1-xOx). The enhancement of photocatalytic activity by lanthanoid oxide loading was shown to be dependent on the formation of redox-inactive lanthanoid(III) oxide layers on the Rh nanoparticles, which effectively suppresses the backward water formation reaction to enable H 2 evolution on Rh.

UR - http://www.scopus.com/inward/record.url?scp=84880139811&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880139811&partnerID=8YFLogxK

U2 - 10.1021/jp402240d

DO - 10.1021/jp402240d

M3 - Article

AN - SCOPUS:84880139811

VL - 117

SP - 14000

EP - 14006

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 27

ER -

Lanthanoid oxide layers on rhodium-loaded (Ga_1-xZn _x)(N_1-xO_x) photocatalyst as a modifier for overall water splitting under visible-light irradiation

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint Dive into the research topics of 'Lanthanoid oxide layers on rhodium-loaded (Ga<sub>1-x</sub>Zn <sub>x</sub>)(N<sub>1-x</sub>O<sub>x</sub>) photocatalyst as a modifier for overall water splitting under visible-light irradiation'. Together they form a unique fingerprint.

Cite this