TY - JOUR
T1 - ZnO nanorod-chitosan composite coatings with enhanced antifouling properties
AU - Al-Belushi, Mohammed A.
AU - Myint, Myo Tay Zar
AU - Kyaw, Htet Htet
AU - Al-Naamani, Laila
AU - Al-Mamari, Rahma
AU - Al-Abri, Mohammed
AU - Dobretsov, Sergey
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - The current study describes the fabrication of chitosan‑zinc oxide nanorods composite (CHT/ZnO) on fiberglass panels (support substrate). ZnO nanorods (NRs) with size ranging from 20 to 100 nm and some microrods with an approximate size of 0.5–1 μm were grown on fiberglass panels. CHT 1%/ZnO composite had ZnO NRs incorporated into chitosan (CHT) coating while ZnO NRs were not visible in the CHT 2%/ZnO NRs composite. XRD and FTIR results showed the presence of the ZnO and chitosan. The water contact angle decreased from 80° ± 2° (control) to 65° ± 2° for CHT 1%/ZnO NRs and 42 ± 2° for CHT 2%/ZnO NRs composite coatings. The antimicrobial activities of the coated fiberglass panels were investigated using biofilm-forming bacteria Bacillus subtilis and Escherichia coli under both light and dark conditions. CHT/ZnO composite coated fiberglass panels showed the strongest antimicrobial activity compared to chitosan, ZnO NRs coatings, and Zn-based antifouling paint in the experiments with B. subtilis and E. coli under light conditions. The highest antifouling activity was observed for CHT 2%/ZnO composites. CHT/ZnO composites can be good alternatives to the toxic antifouling paints.
AB - The current study describes the fabrication of chitosan‑zinc oxide nanorods composite (CHT/ZnO) on fiberglass panels (support substrate). ZnO nanorods (NRs) with size ranging from 20 to 100 nm and some microrods with an approximate size of 0.5–1 μm were grown on fiberglass panels. CHT 1%/ZnO composite had ZnO NRs incorporated into chitosan (CHT) coating while ZnO NRs were not visible in the CHT 2%/ZnO NRs composite. XRD and FTIR results showed the presence of the ZnO and chitosan. The water contact angle decreased from 80° ± 2° (control) to 65° ± 2° for CHT 1%/ZnO NRs and 42 ± 2° for CHT 2%/ZnO NRs composite coatings. The antimicrobial activities of the coated fiberglass panels were investigated using biofilm-forming bacteria Bacillus subtilis and Escherichia coli under both light and dark conditions. CHT/ZnO composite coated fiberglass panels showed the strongest antimicrobial activity compared to chitosan, ZnO NRs coatings, and Zn-based antifouling paint in the experiments with B. subtilis and E. coli under light conditions. The highest antifouling activity was observed for CHT 2%/ZnO composites. CHT/ZnO composites can be good alternatives to the toxic antifouling paints.
KW - Antifouling
KW - Bacteria
KW - Biofouling
KW - Chitosan-ZnO nanocomposite
KW - Zinc oxide (ZnO) nanorods
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U2 - 10.1016/j.ijbiomac.2020.08.096
DO - 10.1016/j.ijbiomac.2020.08.096
M3 - Article
C2 - 32800955
AN - SCOPUS:85089749527
SN - 0141-8130
VL - 162
SP - 1743
EP - 1751
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -