Kinetics and Thermodynamics of Zinc Phosphate Hydrate Synthesized by a Simple Route in Aqueous and Acetone Media

Boonchom, Banjong; Baitahe, Rattanai; Kongtaweelert, Samart; Vittayakorn, Naratip

doi:10.1021/ie901626z

Cited by 31 publications

(17 citation statements)

References 26 publications

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“…These growth media commonly contain inorganic phosphates, sodium, potassium, and chloride ions, as well as complex organic components including tryptone, yeast extract, soya peptone, and glucose. Zinc oxide has been demonstrated to form precipitates with phosphates, 29,30 complexes with chloride, 31 hydroxide ions, 32 and organic compounds such as citrate 33 and amino acids. 14 Despite the potential for any number of these components to react with the zinc oxide nanomaterials, this is rarely accounted for during tests of the antibacterial efficacy of zinc oxide.…”

Section: Introductionmentioning

confidence: 99%

The effect of common bacterial growth media on zinc oxide thin films: identification of reaction products and implications for the toxicology of ZnO

et al. 2014

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This study provides a thorough investigation on the effects of the commonly-employed microbial growth medium, namely the peptide-containing luria-bertani broth, tryptic soy broth, the glucose-containing M9 Minimal Salts Media as well as phosphate-buffered saline solution on the dissolution and microstructural transformation of zinc oxide thin film. Morphology and chemical composition of the ZnO film after incubation in the media was thoroughly characterised. In addition, the amount and rate of soluble zinc released by the ZnO thin films was quantified. Exposure of ZnO thin film in the different growth media saw formation of new zinc compounds, resulting from various chemical reactions of zinc with the medium components. Deposition of the new zinc compounds on top of the thin film caused morphological transformation of the film. Zinc leaching was observed in all of the tested media, with significantly higher extent of dissolution observed in peptide-containing organic media, such as luria bertani and tryptic soy broth. Complex organic components, such as amino acids and peptides form complexes with zinc oxide coatings, resulting in complexation-mediated leaching of zinc. Soluble zinc re-precipitates with components in the media, and therefore substantially reduced the amount of dissolved zinc. The results suggest strong influence of solution chemistry on ZnO speciation in a test medium, which have important implications for the mechanistic interpretation of ZnO toxicity.

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Section: Introductionmentioning

confidence: 99%

The effect of common bacterial growth media on zinc oxide thin films: identification of reaction products and implications for the toxicology of ZnO

et al. 2014

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“…The result showed that effective anti-corrosion time was 408 h which was 158 h longer than zinc phosphate bulk materials on market. Because of the existence of crystal water inside the zinc phosphate crystal, a thin liquid layer formed in the surface of the product composed with Zn 2+ , PO 4 3and water. In the follow reaction equation, the M meant the composition of the metal basement.…”

Section: Anti-corrosion Effectmentioning

confidence: 99%

“…Meanwhile, the common technology of zinc phosphate production was hard to manufacture nanoscaled products. So, various techniques such as hydrothermal method [3][4][5], sol-gel method [6] and solid-state method [7] have been investigated for synthesis of zinc phosphate nanocrystals in the recent several years. However, these methods were difficult to be applied in the industry production because of the high cost and complicated technology.…”

Section: Introductionmentioning

confidence: 99%

One-Step Preparation and Characterization of Zinc Phosphate Nanocrystals with Modified Surface

Wang¹,

Li²,

Liu³

et al. 2011

SNL

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The surface-modified zinc phosphate (Zn3(PO4)2) nanocrystals were synthesized by a facile and efficient one-step ultrasonic-template-microwave (UTM) assisted route. The crystal structure, optical properties and morphologies of zinc phosphate nanocrystals were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and transmission electron microscope. And the TEM image showed that the product had good dispersion with a particle size of 30 – 35 nm. The anti-corrosion function of anti-corrosive paint using zinc phosphate nanocrystals was researched and the experiment result showed that the salt atmosphere–resistant time was 158 h longer than that of zinc phosphate bulk materials on market. The performance of zinc phosphate nanocrystals with modified surface synthesized by one-step UTM assisted route was improved 63.2% compared with the bulk materials

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“…Zinc phosphate is non-toxic and an important multifunctional anticorrosive material for polymeric coatings, which has been studied extensively for potential applications such as plastic, electrical fields, medicine (dental cements) and anticorrosive coatings/pigment (Nevare et al, 2014;Boonchom et al, 2010). Nano-size fillers with low volume have been reported as efficient material over their conventional size materials.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of renewable myristic acid based polyurethane nano zinc phosphate hybrid coatings to mitigate corrosion of mild steel

Rajput

Patil

Gite

2018

PRT

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Purpose The present study aims to demonstrate the use of renewable source in the preparation of polyurethane (PU) coatings and mitigation of corrosion of mild steel using nano zinc phosphate. Results indicated improvement in the properties of the PU coatings, especially anticorrosive properties by the addition of nano zinc phosphate. Design/methodology/approach Renewable-source-based polyestermyristamide polyol was synthesized using myristic acid as a starting material. The synthesis of polyol was carried by amidation as well as by esterification by a one-pot route. The structure of the prepared polyestermyristamide was confirmed with the support of end-group analysis and spectral study. PU coatings were prepared from synthesized polyestermyristamide polyol and used to protect metal substrate against corrosion. Corrosion properties of the prepared PU were found to be lower; hence, to improve the performance of these coatings, nano zinc phosphate was added to the coatings. The nano zinc phosphate was synthesized in the laboratory by reported sonication method and analyzed for morphology by scanning electron microscopy. Performance of coatings was studied with respect to effect of percentage nano zinc phosphate on thermal stability, mechanical properties and chemical resistances of PU coatings. Findings The combination of zinc phosphate nano rods and particles in myristic acid-based PU coatings provided substantial corrosion barrier properties to the coatings. Different per cent of the synthesized zinc phosphate nano rods and particles were loaded into the matrix, and corresponding coatings were estimated for corrosion resistance, thermal and chemical properties. Immersion study of the coated panels in 3.5 per cent NaCl solution showed good corrosion resistance for both PU coatings containing 2 and 3 per cent nano zinc phosphate. Practical implications This paper has provided the solution to replace existing petroleum-based raw materials with myristic acid as a renewable source in preparing PU coatings. Conventional coatings act as physical barriers against aggressive species but do not have ability to perform as permanent impassable to corrosive species. Hence, nano-sized zinc phosphate is used as corrosion inhibitor in to the synthesized PU coatings for enhancing anticorrosive performance. Originality/value In the paper, polyesteramide polyol is synthesized using renewable-source-based material, i.e. myristic acid to replace existing petroleum-based acid as a greener approach. Normally, vegetable oils are preferred as they have such kinds of polyols. The polyesteramide reaction is one pot that avoids the extra steps required in the synthesis. Further, it has been found that the pristine renewable coatings are unable to fully protect subtract from corrosion, whereas an addition of the nano-size zinc phosphate has enhanced the corrosion properties of the coatings.

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Kinetics and Thermodynamics of Zinc Phosphate Hydrate Synthesized by a Simple Route in Aqueous and Acetone Media

Cited by 31 publications

References 26 publications

The effect of common bacterial growth media on zinc oxide thin films: identification of reaction products and implications for the toxicology of ZnO

The effect of common bacterial growth media on zinc oxide thin films: identification of reaction products and implications for the toxicology of ZnO

One-Step Preparation and Characterization of Zinc Phosphate Nanocrystals with Modified Surface

Fabrication of renewable myristic acid based polyurethane nano zinc phosphate hybrid coatings to mitigate corrosion of mild steel

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