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01.10.2014 | Original Paper

In situ synthesis of Ag₃PO₄/cellulose nanocomposites with photocatalytic activities under sunlight

verfasst von: Qiyang Wang, Jie Cai, Lina Zhang

Erschienen in: Cellulose | Ausgabe 5/2014

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Abstract

In this work, we developed a strategy for Ag₃PO₄/cellulose nanocomposite hydrogels via in situ reduction and oxidation of Ag₃PO₄ nanoparticles in a cellulose matrix. The results of FT-IR, X-ray diffraction and X-ray photoelectron spectroscopy proved that the Ag₃PO₄ nanoparticles were successfully synthesized in situ in the cellulose hydrogels. Moreover, scanning electron microscopy and transmission electron microscopy indicated that various Ag₃PO₄ nanoparticles were synthesized, and they were dispersed uniformly in the regenerated cellulose hydrogels without aggregation with an average diameter of Ag₃PO₄ particles from 3.1 ± 2.7 to 11 ± 4.5 nm with an increase in Ag ion concentration. The photocatalytic degradation test of Ag₃PO₄/cellulose nanocomposite hydrogels provided evidence for the excellent photocatalytic degradation activity to rhodamine B under natural sunlight. Moreover, the photocatalytic degradation efficient increased with increasing Ag₃PO₄ concentration, where the decreasing of the Ag₃PO₄ nanoparticle size could increase the photocatalytic degradation speed. The porous structure of the cellulose hydrogels supplied not only cavities for the formation of Ag₃PO₄ nanoparticles, but also a shell to protect their nanostructure. The Ag₃PO₄/cellulose nanocomposite hydrogels exhibited good mechanical properties and thermal stability. This portable photocatalyst has good potential for application in the field of water pollution treatment.

Graphical Abstract

Ag₃PO₄ nanoparticles at each AgNO₃ concentration were synthesized and dispersed uniformly in the regenerated cellulose hydrogels without aggregation and the average diameter of Ag₃PO₄ particle of SP05, SP10 and SP40 increased gradually from 3.1±2.7 to 11±4.5 nm with increase in AgNO₃ concentration. Ag₃PO₄/cellulose nanocomposite hydrogels posses good degradation efficiency of photocatalytic degradation Rh B. Moreover, Ag₃PO₄ nanoparticle size is smaller and the degradation efficiency is higher. Ag₃PO₄/cellulose nanocomposite hydrogels have excellent mechanical property and moderate thermal stability. This material has potential application in field of visible light photocatalytic, water treatment and solar energy conversion.

Vorheriger Artikel Enhancing enzymatic hydrolysis of crystalline cellulose and lignocellulose by adding long-chain fatty alcohols

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Titel: In situ synthesis of Ag3PO4/cellulose nanocomposites with photocatalytic activities under sunlight
verfasst von: Qiyang Wang
Jie Cai
Lina Zhang
Publikationsdatum: 01.10.2014
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 5/2014
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-014-0340-1

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