Journal
APPLIED SURFACE SCIENCE
Volume 430, Issue -, Pages 571-577Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.06.186
Keywords
BiOCl/Bi12O17Cl2; 2D nanojunction; Visible light; Photocatalytic activity; NO removal; In situ DRIFTS
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Funding
- Chongqing Post-doctoral Science Foundation [Xm2016027]
- Scientific and Technological Research Program of Chongqing Education Commission [KJ1600305]
- National Natural Science Foundation of China [21501016]
- Natural Science Foundation of Chongqing [cstc2016jcyjA0481]
- Science and Technology project of Chongqing Education Commission [KJ1600625]
- Innovative Research Team of Chongqing [CXTDG201602014, CXTDX201601016]
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Novel two-dimensional (2D) BiOCl/Bi12O17Cl2 nanojunctions were fabricated by a facile one-pot in situ method at room temperature. The as-prepared samples were analyzed by XRD, SEM, TEM, HRTEM, UV-vis DRS, PL, ESR and BET-BJH measurement in detail. The photocatalytic performance of the samples was evaluated by removal of NO at ppb level under visible-light illumination. The result reveals that the BiOCl/Bi12O17Cl2 nanojunctions manifests conspicuously enhanced photocatalytic efficiency for NO removal. The facilitated performance can be ascribed to the well-matched band structure and relatively high specific surface area. In addition, the in situ diffuse reflectance infrared Fourier transform spectroscopy was applied to investigate the adsorption and photocatalytic NO oxidation processes. The reaction mechanism of photocatalytic NO oxidation was proposed based on the observed intermediates. The present work could pave a way to synthesize novel visible light photocatalysts at room temperature for environmental application. (C) 2017 Elsevier B.V. All rights reserved.
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