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Role of ZnO on nylon 6 surface and the photocatalytic efficiency of methylene blue for wastewater treatment

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Abstract

Nylon 6 and its modification as a compound have been employed in several applications such as in the textile industry. To gain effectiveness in textile applications, nylon 6’s self-cleaning and antibacterial properties were modified. ZnO was successfully synthesized using a wet chemical synthetic procedure. The thermal decomposition of the ZnO precursor was investigated using thermogravimetric analysis. The calcination temperature was set to be 500–1000 °C for 2 h. Decomposition products of the organic phase were removed at temperatures ranging from 300 to 500 °C. X-ray diffraction and scanning electron microscopy showed the single phase of ZnO and the variable-sized hexagonal-shaped cross-section, respectively. With incremental increases in the calcination temperature, there was no residue from char, and agglomeration of the ZnO increased. The ZnO was dispersed in methanol and subsequently spin-coated onto a nylon 6 surface. The efficiency of ZnO coating on the nylon 6 surface was investigated by the photocatalytic activity of methylene blue degradation. The apparent rate constant was estimated to be 0.5 by the Langmuir-Hinshelwood equation. The photocatalytic activity of ZnO coated on nylon 6 exhibited excellent performance for wastewater treatment in the textile industry.

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Acknowledgments

The supply of nylon 6 pellets from UBE Technical Center (Asia), Limited, is greatly appreciated.

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Authors and Affiliations

  1. Advanced Functional Polymeric Materials Research Group, Faculty of Science and Technology, Thammasat University, Patumtani, 12120, Thailand

    S. Ummartyotin & C. Pechyen

  2. Materials Research Center, in collaboration with HORIBA Scientific and Thammasat University, Patumtani, 12120, Thailand

    S. Ummartyotin & C. Pechyen

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  1. S. Ummartyotin
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  2. C. Pechyen
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Correspondence to S. Ummartyotin or C. Pechyen.

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Ummartyotin, S., Pechyen, C. Role of ZnO on nylon 6 surface and the photocatalytic efficiency of methylene blue for wastewater treatment. Colloid Polym Sci 294, 1217–1224 (2016). https://doi.org/10.1007/s00396-016-3881-z

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  • DOI: https://doi.org/10.1007/s00396-016-3881-z

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