OXYNITRIDE HETEROJUNCTION, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Title:

OXYNITRIDE HETEROJUNCTION, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2024/077929

Kind Code:

A1

Abstract:

The present disclosure discloses an oxynitride heterojunction, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) preparing a first precursor, which is AM2Ta3O10 or ARTa2O7, wherein in AM2Ta3O10, A is Cs or Rb, and M is Ca, Sr or Ba; and in ARTa2O7, A is Cs or Rb, and R is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu or Y; (2) preparing a second precursor from the first precursor by means of a liquid phase exfoliation method; (3) subjecting the second precursor to a molten salt treatment or a hydrothermal treatment to prepare a third precursor; and (4) nitriding the third precursor to generate an oxynitride heterojunction in situ.

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Inventors:

LUO YANPEI (CN)
WANG LELE (CN)
FANG CHAOJUN (CN)
BAO QIANG (CN)
CHEN BAOKANG (CN)
YAO YAN (CN)
MA YUNLONG (CN)
KONG FANHAI (CN)
YANG XIAONING (CN)
LEI SIYUAN (CN)
WANG KAI (CN)

Application Number:

PCT/CN2023/090661

Publication Date:

April 18, 2024

Filing Date:

April 25, 2023

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Assignee:

SUZHOU TPRI ENER & ENVIRO TECH CO LTD (CN)

International Classes:

B01J27/24; C01B3/04

Foreign References:

CN115518668A	2022-12-27
CN108187718A	2018-06-22
JP2009096704A	2009-05-07

Other References:

LUO YANPEI; LI HAO; LUO YALING; LI ZHENG; QI YU; ZHANG FUXIANG; LI CAN: "Heterostructure of Ta3N5 nanorods and CaTaO2N nanosheets fabricated using a precursor template to boost water splitting under visible light", JOURNAL OF ENERGY CHEMISTRY, ELSEVIER, AMSTERDAM, NL, vol. 67, 23 September 2021 (2021-09-23), AMSTERDAM, NL , pages 27 - 33, XP086970951, ISSN: 2095-4956, DOI: 10.1016/j.jechem.2021.09.025

Attorney, Agent or Firm:

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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