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Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution.

Publication ,  Journal Article
He, X; Ding, Y; Huang, Z; Liu, M; Chi, M; Wu, Z; Segre, CU; Song, C; Wang, X; Guo, X
Published in: Angewandte Chemie (International ed. in English)
June 2023

A photocatalyst TiO2 /Ti-BPDC-Pt is developed with a self-grown TiO2 /Ti-metal-organic framework (MOF) heterojunction, i.e., TiO2 /Ti-BPDC, and selectively anchored high-density Pt single-atomic cocatalysts on Ti-BPDC for photocatalytic hydrogen evolution. This intimate heterojunction, growing from the surface pyrolytic reconstruction of Ti-BPDC, works in a direct Z-scheme, efficiently separating electrons and holes. Pt is selectively anchored on Ti-BPDC by ligands and is found in the form of single atoms with loading up to 1.8 wt %. The selective location of Pt is the electron-enriched domain of the heterojunction, which further enhances the utilization of the separated electrons. This tailored TiO2 /Ti-BPDC-Pt shows a significantly enhanced activity of 12.4 mmol g-1  h-1 compared to other TiO2 - or MOF-based catalysts. The structure-activity relationship further proves the balance of two simultaneously exposed domains of heterojunctions is critical to fulfilling this kind of catalyst.

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Published In

Angewandte Chemie (International ed. in English)

DOI

EISSN

1521-3773

ISSN

1433-7851

Publication Date

June 2023

Volume

62

Issue

25

Start / End Page

e202217439

Related Subject Headings

  • Titanium
  • Organic Chemistry
  • Metal-Organic Frameworks
  • Hydrogen
  • Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences
 

Citation

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He, X., Ding, Y., Huang, Z., Liu, M., Chi, M., Wu, Z., … Guo, X. (2023). Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution. Angewandte Chemie (International Ed. in English), 62(25), e202217439. https://doi.org/10.1002/anie.202217439
He, Xiaoyu, Yujia Ding, Zhennan Huang, Min Liu, Miaofang Chi, Zili Wu, Carlo U. Segre, Chunshan Song, Xiang Wang, and Xinwen Guo. “Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution.Angewandte Chemie (International Ed. in English) 62, no. 25 (June 2023): e202217439. https://doi.org/10.1002/anie.202217439.
He X, Ding Y, Huang Z, Liu M, Chi M, Wu Z, et al. Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution. Angewandte Chemie (International ed in English). 2023 Jun;62(25):e202217439.
He, Xiaoyu, et al. “Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution.Angewandte Chemie (International Ed. in English), vol. 62, no. 25, June 2023, p. e202217439. Epmc, doi:10.1002/anie.202217439.
He X, Ding Y, Huang Z, Liu M, Chi M, Wu Z, Segre CU, Song C, Wang X, Guo X. Engineering a Self-Grown TiO2 /Ti-MOF Heterojunction with Selectively Anchored High-Density Pt Single-Atomic Cocatalysts for Efficient Visible-Light-Driven Hydrogen Evolution. Angewandte Chemie (International ed in English). 2023 Jun;62(25):e202217439.
Journal cover image

Published In

Angewandte Chemie (International ed. in English)

DOI

EISSN

1521-3773

ISSN

1433-7851

Publication Date

June 2023

Volume

62

Issue

25

Start / End Page

e202217439

Related Subject Headings

  • Titanium
  • Organic Chemistry
  • Metal-Organic Frameworks
  • Hydrogen
  • Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences