Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO3 and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis

Hajime Wagata; Kenta Sakakibara; Kenta Kawashima; Mirabbos Hojamberdiev; Kunio Yubuta; Katsuya Teshima

doi:10.1021/acsaem.9b00815

Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO₃ and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis

Hajime Wagata, Kenta Sakakibara, Kenta Kawashima, Mirabbos Hojamberdiev, Kunio Yubuta, Katsuya Teshima

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

7 Citations (Scopus)

Abstract

The polyhedral-shaped ilmenite-type ZnTiO₃ crystals with well-developed facets were grown from alkali metal chloride fluxes (ACl, A = Li, Na, K, Rb, and Cs). NaCl and CsCl were observed to be the most suitable fluxes for growing ilmenite-type ZnTiO₃ crystals without impurity phases. Doping nitrogen into the crystals was achieved via heating under the continuous flow of ammonia gas (NH₃). The resulting crystals exhibited enhanced photon harvesting capacity while still maintaining their original crystal phase (i.e., ZnTiO₃). The introduction of nitrogen into the lattice was confirmed through analytical techniques used for investigating the surface chemical states and bulk chemical compositions. The N-doped ZnTiO₃ served as a competent photocatalyst for water oxidations in AgNO₃ aqueous solutions under visible light irradiation.

Original language	English
Pages (from-to)	7762-7771
Number of pages	10
Journal	ACS Applied Energy Materials
Volume	2
Issue number	11
DOIs	https://doi.org/10.1021/acsaem.9b00815
Publication status	Published - Nov 25 2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

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10.1021/acsaem.9b00815

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title = "Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO3 and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis",

abstract = "The polyhedral-shaped ilmenite-type ZnTiO3 crystals with well-developed facets were grown from alkali metal chloride fluxes (ACl, A = Li, Na, K, Rb, and Cs). NaCl and CsCl were observed to be the most suitable fluxes for growing ilmenite-type ZnTiO3 crystals without impurity phases. Doping nitrogen into the crystals was achieved via heating under the continuous flow of ammonia gas (NH3). The resulting crystals exhibited enhanced photon harvesting capacity while still maintaining their original crystal phase (i.e., ZnTiO3). The introduction of nitrogen into the lattice was confirmed through analytical techniques used for investigating the surface chemical states and bulk chemical compositions. The N-doped ZnTiO3 served as a competent photocatalyst for water oxidations in AgNO3 aqueous solutions under visible light irradiation.",

author = "Hajime Wagata and Kenta Sakakibara and Kenta Kawashima and Mirabbos Hojamberdiev and Kunio Yubuta and Katsuya Teshima",

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T1 - Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO3 and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis

AU - Wagata, Hajime

AU - Sakakibara, Kenta

AU - Kawashima, Kenta

AU - Hojamberdiev, Mirabbos

AU - Yubuta, Kunio

AU - Teshima, Katsuya

PY - 2019/11/25

Y1 - 2019/11/25

N2 - The polyhedral-shaped ilmenite-type ZnTiO3 crystals with well-developed facets were grown from alkali metal chloride fluxes (ACl, A = Li, Na, K, Rb, and Cs). NaCl and CsCl were observed to be the most suitable fluxes for growing ilmenite-type ZnTiO3 crystals without impurity phases. Doping nitrogen into the crystals was achieved via heating under the continuous flow of ammonia gas (NH3). The resulting crystals exhibited enhanced photon harvesting capacity while still maintaining their original crystal phase (i.e., ZnTiO3). The introduction of nitrogen into the lattice was confirmed through analytical techniques used for investigating the surface chemical states and bulk chemical compositions. The N-doped ZnTiO3 served as a competent photocatalyst for water oxidations in AgNO3 aqueous solutions under visible light irradiation.

AB - The polyhedral-shaped ilmenite-type ZnTiO3 crystals with well-developed facets were grown from alkali metal chloride fluxes (ACl, A = Li, Na, K, Rb, and Cs). NaCl and CsCl were observed to be the most suitable fluxes for growing ilmenite-type ZnTiO3 crystals without impurity phases. Doping nitrogen into the crystals was achieved via heating under the continuous flow of ammonia gas (NH3). The resulting crystals exhibited enhanced photon harvesting capacity while still maintaining their original crystal phase (i.e., ZnTiO3). The introduction of nitrogen into the lattice was confirmed through analytical techniques used for investigating the surface chemical states and bulk chemical compositions. The N-doped ZnTiO3 served as a competent photocatalyst for water oxidations in AgNO3 aqueous solutions under visible light irradiation.

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Alkali Metal Chloride Flux Growth of Ilmenite-Type ZnTiO₃ and Subsequent Nitrogen Doping for Visible-Light-Driven Water Oxidation Catalysis

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