In-Situ Fabrication of g-C3N4/ZnO Nanocomposites for Photocatalytic Degradation of Methylene Blue: Synthesis Procedure Does Matter

doi:10.3390/nano9020215

SIC OpenIR

	In-Situ Fabrication of g-C3N4/ZnO Nanocomposites for Photocatalytic Degradation of Methylene Blue: Synthesis Procedure Does Matter
	Zhang, Shengqiang; Su, Changsheng; Ren, Hang; Li, Mengli; Zhu, Longfeng; Ge, Shuang; Wang, Min; Zhang, Zulei; Li, Lei; Cao, Xuebo
	2019-02-01
Source Publication	NANOMATERIALS
ISSN	2079-4991
Volume	9 Issue:2
Subtype	Article
Abstract	The nanocomposite preparation procedure plays an important role in achieving a well-established heterostructured junction, and hence, an optimized photocatalytic activity. In this study, a series of g-C3N4/ZnO nanocomposites were prepared through two distinct procedures of a low-cost, environmentally-friendly, in-situ fabrication process, with urea and zinc acetate being the only precursor materials. The physicochemical properties of synthesized g-C3N4/ZnO composites were mainly characterized by XRD, UV-VIS diffuse reflectance spectroscopy (DRS), N-2 adsorption-desorption, FTIR, TEM, and SEM. These nanocomposites' photocatalytic properties were evaluated in methylene blue (MB) dye photodecomposition under UV and sunlight irradiation. Interestingly, compared with ZnO nanorods, g-C3N4/ZnO nanocomposites (x:1, obtained from urea and ZnO nanorods) exhibited weak photocatalytic activity likely due to a "shading effect", while nanocomposites (x:1 CN, made from g-C3N4 and zinc acetate) showed enhanced photocatalytic activity that can be ascribed to the effective establishment of heterojunctions. A kinetics study showed that a maximum reaction rate constant of 0.1862 min(-1) can be achieved under solar light illumination, which is two times higher than that of bare ZnO nanorods. The photocatalytic mechanism was revealed by determining reactive species through adding a series of scavengers. It suggested that reactive center dot O-2(-) and h(+) radicals played a major role in promoting dye photodegradation.
Keyword	ZnO nanorods dye photodegradation graphitic carbon nitride nanocomposites in situ synthesis
DOI	10.3390/nano9020215
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science
Publisher	MDPI
Citation statistics	Cited Times:11[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27348
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Zhang, Shengqiang,Su, Changsheng,Ren, Hang,et al. In-Situ Fabrication of g-C3N4/ZnO Nanocomposites for Photocatalytic Degradation of Methylene Blue: Synthesis Procedure Does Matter[J]. NANOMATERIALS,2019,9(2).
APA	Zhang, Shengqiang.,Su, Changsheng.,Ren, Hang.,Li, Mengli.,Zhu, Longfeng.,...&Cao, Xuebo.(2019).In-Situ Fabrication of g-C3N4/ZnO Nanocomposites for Photocatalytic Degradation of Methylene Blue: Synthesis Procedure Does Matter.NANOMATERIALS,9(2).
MLA	Zhang, Shengqiang,et al."In-Situ Fabrication of g-C3N4/ZnO Nanocomposites for Photocatalytic Degradation of Methylene Blue: Synthesis Procedure Does Matter".NANOMATERIALS 9.2(2019).

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