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Author:

Cao, Jiamei (Cao, Jiamei.) | Luo, Bing (Luo, Bing.) | Li, Jinghua (Li, Jinghua.) | Ma, Lijing (Ma, Lijing.) | Jing, Dengwei (Jing, Dengwei.)

Indexed by:

EI SCIE Scopus Engineering Village

Abstract:

Endowing photocatalyst with functional nanostructure can effectively improve its performance towards solar energy conversion. Here, a unique Ni–Fe-based mesoporous hollow spherical nanostructure (NiFeOx/NC-t) was facilely constructed via the direct thermal decomposition of Ni-BTC@PBA composites. The hybrids consist of in-situ formed nitrogen-enriched carbon layers constituting the mesoporous walls of hollow spherical, and amorphous NiFeOx nanoparticles and a small fraction of FeNi3 are embedded on the spherical walls during carbonization. After loading EY molecules on NiFeOx/NC-t as solar light absorbers, an optimal photocatalytic hydrogen evolution rate of 5352.7 μmol g−1 h−1 was achieved with excellent stability under visible light (λ > 420 nm) in the absence of co-catalyst. The excellent photocatalytic activity was revealed to be ascribed to: ) mesoporous hollow spherical structure having a large surface area, thus exposing more active sites; ) efficient injection of photo-generated electrons from excited EY− into NiFeOx and FeNi3 by the bridge of high-conductive nitrogen-enriched carbon layer. In brief, the structural and compositional features synergistically strengthen the photocatalytic activity of NiFeOx/NC-t. It is worth noting that MOF-derived route can significantly simplify the preparation process of mesoporous hollow spherical nanostructure. This work provides an approach for facile preparation of versatile photocatalysts with high efficiency for solar energy conversion. © 2022 Hydrogen Energy Publications LLC

Keyword:

Binary alloys Carbonization Crystalline materials Decomposition Energy conversion Gas adsorption Light Mesoporous materials Nanostructures Nitrogen Organometallics Photocatalytic activity Solar absorbers Solar energy Spheres

Author Community:

  • [ 1 ] [Cao, Jiamei]International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shaanxi, Xi'an; 710049, China
  • [ 2 ] [Luo, Bing]School of Chemical Engineering and Technology, Xi'an Jiaotong University, Shaanxi, Xi'an; 710049, China
  • [ 3 ] [Li, Jinghua]International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shaanxi, Xi'an; 710049, China
  • [ 4 ] [Ma, Lijing]International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shaanxi, Xi'an; 710049, China
  • [ 5 ] [Jing, Dengwei]International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shaanxi, Xi'an; 710049, China

Reprint Author's Address:

  • L. Ma;;International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China;;email: ljma@mail.xjtu.edu.cn;;

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Source :

International Journal of Hydrogen Energy

ISSN: 0360-3199

Year: 2022

Issue: 40

Volume: 47

Page: 17662-17672

5 . 8 1 6

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:7

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 13

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