10.6084/M9.FIGSHARE.21258596.V1
Huining Zhang
Huining
Zhang
Yankui Xiao
Yankui
Xiao
Zhongyu Shi
Zhongyu
Shi
Lihong Tian
Lihong
Tian
Yuling Tang
Yuling
Tang
Xingmao Liu
Xingmao
Liu
Yangyi Tian
Yangyi
Tian
Yan Lin
Yan
Lin
Facile in situ fabrication of a direct Z-scheme BiOCl/bismuth niobate heterojunction and its effective photodegradation of RhB
<p>Bismuth-based photocatalytic technology has been a promising way to degrade contaminants in the aqueous system. In this work, a direct Z-scheme BiOCl/Bi<sub>3</sub>NbO<sub>7</sub> heterojunction with a different molar ratio of Bi and Nb elements was fabricated through a facile in situ growth method. The structural and photoelectric characteristics of these as-prepared samples were investigated by SEM, XPS, TEM, XRD, BET, UV-vis DRS, PL, EIS and TPC. The photocatalytic activity was evaluated by the degradation of RhB, and its mechanism was analyzed by the active species trapping experiments and DFT calculation. The results showed that compared with other as-prepared samples, BN-4 had the highest activity for RhB degradation with the value of the rate constant (<i>k</i>) being 0.01664 min<sup>−1</sup>. The reason that might be those different molar ratios of Bi and Nb elements in BiOCl/Bi<sub>3</sub>NbO<sub>7</sub> heterojunction would impact the interface structure. And an appropriate molar ratio of that could bring a lower interface resistance that enhances the photocatalytic activity. The •OH and •O<sup>2−</sup> were the main active substances during the RhB photocatalytic process, and a reasonable degradation pathway was proposed.</p>
Biophysics
Biochemistry
Microbiology
Biotechnology
Chemical Sciences not elsewhere classified
Computational Biology
Taylor & Francis
2022
2022-10-02
2024-02-15
Online resource
0 Bytes
10.6084/m9.figshare.21258596
10.1080/01932691.2022.2127755
CC BY 4.0