SYNTHESIS AND SURFACE MODIFICATION OF ZNO NANOPARTICLES

By R. Hong, T. Pan, J. Qian, Hong-zhong Li. 2006

514 citations recorded by the source corpus.

ZnO precursor was prepared by direct precipitation from zinc acetate and ammonium carbonate. ZnO nanoparticles were synthesized by calcination of the precursor at 450 degrees C for 3 h and the calcination after the heterogeneous azeotropic distillation of the precursor, respectively. The synthesized ZnO nanoparticles were characterized by FT-IR, XRD and TEM. It is concluded that the heterogeneous azeotropic distillation of the precursor effectively reduced the formation of hard agglomerates. The surface modification of synthesized ZnO nanoparticles was conducted by capping with oleic acid, and the existence of organic layer can be confirmed by the FT-IR spectra. The lipophilic degree of surface modified ZnO nanoparticles was measured. The ZnO nanoparticle surface was also modified by SiO2, coating. The FT-IR spectrum and XPS clearly showed the formation of an interfacial chemical bond between ZnO and SiO2. In addition, photocatalytic degradation of methyl orange in aqueous solution was performed using ZnO nanoparticles or ZnO/SiO2 nanoparticles as photocatalyst, respectively. The results showed that the ZnO/SiO2 nanoparticles have reduced catalytic activity than that of ZnO nanoparticles. (c) 2006 Elsevier B.V. All rights reserved.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7f0c104273de18d726116e4f5d414b1f1ce4ec46

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Citations in the corpus

Summary on Adsorption and Photocatalysis for Pollutant Remediation: Mini Review (2018, methodology): “Among different agglomeration inhibition methods such as, chemical treatment [116] coating [115], grafting polymerization [117], ligand exchange [115] and self-assembly [118]) techniques, ligand exchange are the one which is nicely acknowledged.”
Investigation of Photocatalytic Degradation of Methyl Orange by Using Nano-Sized ZnO Catalysts (2011, background): “In previous researches, the ZnO nanoparticles were ever modified by SiO2 [16], PMMA [17] and PSt [18], and the influence of particles on the mechanical properties of polymer matrix”
Synthesis, surface modification and photocatalytic property of ZnO nanoparticles (2009, methodology): “In our previous research, the ZnO nanoparticles were modified by SiO2 [23], PMMA [25] and PSt [26], and the influence of particles on the mechanical properties of polymer matrix was studied.”
Synthesis and microstructural properties of ZnO nanoparticles prepared by precipitation method (2013, methodology): “[32], which prepared ZnO precursor by a precipitation method from zinc acetate and ammonium carbonate.”
A review of ZnO nanoparticles as solar photocatalysts: Synthesis, mechanisms and applications (2018, methodology): “In addition, surface modification has also been used to tune the ultraviolet and visible light photoluminescence, as the chemical and physical properties of ZnO nanoparticles can be modified via chemical surface modification through chemical treatment [142], coating [141], grafting polymerization [7”