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Synthesis of Unique Flowerlike Bi 2 O 2 (OH)(NO 3 ) Hierarchical Microstructures with High Surface Area and Superior Photocatalytic Performance
Author(s) -
Han Qiaofeng,
Pang Jiawei,
Wang Xin,
Wu Xiaodong,
Zhu Junwu
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201604085
Subject(s) - x ray photoelectron spectroscopy , photocatalysis , rhodamine b , materials science , diffuse reflectance infrared fourier transform , bismuth , microstructure , specific surface area , chemical engineering , adsorption , nuclear chemistry , chemistry , catalysis , organic chemistry , composite material , engineering , metallurgy
Unique flowerlike Bi 2 O 2 (OH)(NO 3 ) (denoted as BION) hierarchical microstructures assembled by ultrathin nanosheets were hydrothermally synthesized from incomplete hydrolysis of anhydrous bismuth nitrate (Bi(NO 3 ) 3 ) after adsorption of glacial acetic acid (HAc). The structure, composition, and optical properties of the products were characterized by X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), UV/Vis spectroscopy, etc. The as‐prepared flowerlike BION possessed an ultra‐high surface area and thus exhibited exceptional photocatalytic activity for rhodamine B (RhB) degradation under UV light irradiation with an efficiency of about 17; 6 and 2.5 times higher than spherical, aggregated sheet‐like BION and P25 TiO 2 , respectively, and also superior to the reported sheet‐like BION. It also showed good photocatalytic activity for crystal violet (CV) degradation. This work opens new routes for the rational design and synthesis of nontoxic basic bismuth nitrates with a facile synthetic approach, controllable morphology, and excellent photoreactivity.