Preparation and Photocatalytic Activity of BiOCl-ov/palygorskite Nano-composites for the Selective Oxidation of Alcohols under Visible Light Irradiation

doi:10.6023/A18120503

	Preparation and Photocatalytic Activity of BiOCl-ov/palygorskite Nano-composites for the Selective Oxidation of Alcohols under Visible Light Irradiation
	Meng Shuangyan; Yang Hongju; Zhu Nan; Yang Jiao; Yang Ruirui; Yang Zhiwang
	2019-05-15
发表期刊	ACTA CHIMICA SINICA
ISSN	0567-7351
卷号	77 期号:5 页码:461-468
摘要	A series of BiOCl-ov/palygorskite (PGS) nanocomposites (abbreviated as x B/P, where x is the molar content of BiOCl-ov in the composites) were synthesized by simple one-step hydrothermal method. The structure, morphology and photoelectrochemical properties of the nanocomposites have been thoroughly characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N-2 adsorption-desorption, Fourier infrared spectroscopy (FT-IR), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), fluorescence spectroscopy (PL) and electrochemical impedance (EIS) spectra. As a typical rodlike natural mineral, PGS was commonly used as absorbent in many fields. Its photocatalytic properties was always ascribed to the defects in its crystal lattice after the acidic treatment, which would give contribution to the photoinduced electron conductions in its bulky nanoparticles. On the other hand, as a typical layered p-typed semiconductor, BiOCl-ov was widely used in many oxidations due to the many of oxygen vacancies existed in its nanostructure. The combination of rodlike PGS and layered BiOCl-ov could be successfully carried out through the formation of the nanocomposites due to their respective crystal structure as well as their catalytic activity. So the BiOCl- ov/PGS nanocomposites were well prepared according to the advantages of PGS and BiOCl-ov. With the carefully investigation of the structure of the nanocomposites, the results showed that the catalysts were successfully prepared. The structures of BiOCl-ov and PGS were all well remained after the preparing process. The photocatalytic activity of the prepared BiOCl-ov/PGS was detected through the selective oxidation of aromatic alcohols under visible-light conditions. It found that BiOCl-ov/PGS showed promising activity for the photocatalytic oxidation of alcohols under the irradiation of visible light. The conversion of 78% of benzalcohol as well as the selectivity of 86% of benzaldehyde was reached with the catalysis of the nanocomposites in the photocatalytic oxidation of benzalcohol. Some of the other substrates, including the derivatives of benzalcohol as well as diphenylmethanol could be well oxidized. Moreover, the nonaromatic substrate, that is, phenethyl alcohol, it was always thought to be not easy to be oxidized one, could also be oxidized to corresponding phenylacetaldehyde with high conversion (89%) and selectivity (99%). Meanwhile, the catalyst possessed well light stability. The photocatalytic mechanism of the oxidation was also investigated through the active species capturing experiments. It showed that the major active species of the oxidation system was center dot O-2(-) and center dot OH radicals.
关键词	palygorskite BiOCl-ov visible light catalysis aromatic alcohol selective oxidation
DOI	10.6023/A18120503
收录类别	SCIE
语种	中文
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000485149300010
出版者	SCIENCE PRESS
原始文献类型	Article
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.nwnu.edu.cn/handle/39RV6HYL/34497
专题	实体学院_化学化工学院_化工系实体学院_化学化工学院实体学院_初等教育学院
通讯作者	Yang Zhiwang
作者单位	Northwest Normal Univ, Key Lab Polymer Mat Gansu Prov, Key Lab Ecoenvironm Related Polymer Mat, Coll Chem & Chem Engn,Minist Educ, Lanzhou 730070, Gansu, Peoples R China
第一作者单位	化工系
通讯作者单位	化工系
第一作者的第一单位	化工系
推荐引用方式 GB/T 7714	Meng Shuangyan,Yang Hongju,Zhu Nan,et al. Preparation and Photocatalytic Activity of BiOCl-ov/palygorskite Nano-composites for the Selective Oxidation of Alcohols under Visible Light Irradiation[J]. ACTA CHIMICA SINICA,2019,77(5):461-468.
APA	Meng Shuangyan,Yang Hongju,Zhu Nan,Yang Jiao,Yang Ruirui,&Yang Zhiwang.(2019).Preparation and Photocatalytic Activity of BiOCl-ov/palygorskite Nano-composites for the Selective Oxidation of Alcohols under Visible Light Irradiation.ACTA CHIMICA SINICA,77(5),461-468.
MLA	Meng Shuangyan,et al."Preparation and Photocatalytic Activity of BiOCl-ov/palygorskite Nano-composites for the Selective Oxidation of Alcohols under Visible Light Irradiation".ACTA CHIMICA SINICA 77.5(2019):461-468.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Meng-2019-Preparatio（1269KB）	期刊论文		开放获取	CC BY-NC-SA	浏览下载