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

46 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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/jp402240d

Cite this

@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 -