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author:

Zhong, Zhou (Zhong, Zhou.) [1] | Zhang, Heng-Jian (Zhang, Heng-Jian.) [2] | Yang, Ya-Ying (Yang, Ya-Ying.) [3] | Zhang, Tian-Kuan (Zhang, Tian-Kuan.) [4] | Qu, Xing-Hua (Qu, Xing-Hua.) [5] | Ma, Li (Ma, Li.) [6] | Cao, Hai-Lei (Cao, Hai-Lei.) [7] | Hou, Yi-Dong (Hou, Yi-Dong.) [8] | Lü, Jian (Lü, Jian.) [9]

Indexed by:

EI

Abstract:

The low efficiency of photogenerated charge separation significantly hinders the photocatalytic nitrogen (N2) fixation. Local polarization electric field (LPEF) induced by defects has been known to enhance charge separation, yet the synergistic effects and mechanisms related to different types of defects in pure phases remain poorly understood. In this study, defect-free bismuth oxybromide (BiOBr; BOB), together with single vacancy (BOB-VBr and BOB-VO) and dual vacancy (BOB-VBrO) analogues, were successfully synthesized, and the presence of these specific vacancies was comprehensively characterized. Notably, the dual vacancy BOB-VBrO exhibited the highest photocatalytic NH3 generation rate of 266 μmol g-1 h-1 in a liquid-solid biphasic system, which was 6.1, 1.5, and 1.4 times higher than those of BOB, BOB-VBr, and BOB-VO, respectively. Furthermore, the NH3 generation capacity of BOB-VBrO reached an impressive rate of 978 μmol g-1 h-1 in a gas-liquid-solid triphasic system. Photoelectrochemical tests revealed that BOB-VBrO demonstrated the highest light conversion efficiency, followed by BOB-VO, BOB-VBr, and BOB. The relative intensity of the internal electric field in BOB-VBrO was also significantly high, being 1.8, 2.4, and 3.9 times greater than those of BOB-VO, BOB-VBr, and BOB, respectively. The Br and O vacancies synergistically induced LPEF between the [O]/[Br] and [Bi] layers. In situ irradiation X-ray photoelectron spectroscopy indicated that O and Br vacancies of the oligomers could synergistically enhance the LPEF, thereby facilitating the transfer of photogenerated electrons from O/Br to Bi. Additionally, the practical feasibility of BOB-VBrO in photocatalytic N2 fixation was validated to produce liquid nitrogenous fertilizer for plant growth, revealing its potential application in agricultural production. © 2025 American Chemical Society.

Keyword:

Algae control Alkanolamines Bromine compounds Color centers Crystal growth from gel Crystal growth from melt Cubic boron nitride Dilution Electrodialysis Grain boundaries Herbicides Induced polarization logging Ionic strength Leak detection Liquefied natural gas Membrane technology Microfiltration Nanofiltration Nitrogen fertilizers Nitrogen fixation Partial discharges Photocatalytic activity Photoionization Photolysis Solvent extraction Surface discharges Triethanolamine Water filtration

Community:

  • [ 1 ] [Zhong, Zhou]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 2 ] [Zhong, Zhou]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; 350116, China
  • [ 3 ] [Zhang, Heng-Jian]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 4 ] [Yang, Ya-Ying]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 5 ] [Zhang, Tian-Kuan]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 6 ] [Qu, Xing-Hua]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 7 ] [Ma, Li]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China
  • [ 8 ] [Cao, Hai-Lei]Instrumental Analysis Center of Fujian Agriculture, Forestry University, Fuzhou; 350002, China
  • [ 9 ] [Hou, Yi-Dong]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; 350116, China
  • [ 10 ] [Lü, Jian]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou; 350002, China

Reprint 's Address:

  • [lü, jian]fujian provincial key laboratory of soil environmental health and regulation, college of resources and environment, fujian agriculture and forestry university, fuzhou; 350002, china

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Source :

ACS Catalysis

Year: 2025

Issue: 8

Volume: 15

Page: 6334-6345

1 1 . 7 0 0

JCR@2023

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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