In:
Frontiers in Chemistry, Frontiers Media SA, Vol. 9 ( 2021-12-14)
Abstract:
Bi 5 O 7 I/g-C 3 N 4 p-n junctioned photocatalysts were synthesized by alcohol-heating and calcination in air. The structures, morphologies and optical properties of as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–Vis diffuse reflectance spectroscopy (DRS). Photocatalytic activity of the heterojunctioned composites were evaluated by degradation of Rhodamine B (RhB) and tetracycline hydrochloride (TCH) under visible light illumination. The results indicated that the composites exhibited superior efficiencies for photodegradation of RhB and TCH in comparison with pure BiOI, Bi 5 O 7 I and g-C 3 N 4 . An effective built-in electric field was formed by the interface between p-type Bi 5 O 7 I and n-type g-C 3 N 4 , which promoted the efficient separation of photoinduced electron-hole pairs. In addition, 8% Bi 5 O 7 I/g-C 3 N 4 composite showed excellent photostability in a five-cycle photocatalytic experiment. Experiments on scavenging active intermediates revealed the roles of active species.
Type of Medium:
Online Resource
ISSN:
2296-2646
DOI:
10.3389/fchem.2021.781991
DOI:
10.3389/fchem.2021.781991.s001
DOI:
10.3389/fchem.2021.781991.s002
DOI:
10.3389/fchem.2021.781991.s003
DOI:
10.3389/fchem.2021.781991.s004
DOI:
10.3389/fchem.2021.781991.s005
DOI:
10.3389/fchem.2021.781991.s006
DOI:
10.3389/fchem.2021.781991.s007
DOI:
10.3389/fchem.2021.781991.s008
DOI:
10.3389/fchem.2021.781991.s009
DOI:
10.3389/fchem.2021.781991.s010
DOI:
10.3389/fchem.2021.781991.s011
DOI:
10.3389/fchem.2021.781991.s012
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2021
detail.hit.zdb_id:
2711776-5
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