Effect of Divalent Metals on the UV-Shielding Properties
of MII/MgAl Layered Double Hydroxides
Posted on 2019-06-11 - 17:43
Both the particle
size and compositions have a strong influence
on the UV-shielding performance of layered double hydroxides (LDHs),
and they will interact with each other. To investigate the effects
of divalent metal ions on the UV-shielding properties of layered double
hydroxides (LDHs), MII/MgAl–CO3 LDHs
(M = Mg, Co, Ni, Cu, or Zn) with the same primary and secondary particle
size have been prepared and their UV-shielding performance have been
studied in this work. The UV–vis spectra show that the ZnMgAl-LDHs
exhibit the highest absorbance under the ultraviolet B and ultraviolet
A rays among these LDH samples, but in the ultraviolet C region, the
CuMgAl-LDHs show the highest absorbance and this result is in good
accordance with the UV-shielding performance, which was examined by
protecting the photocatalytic degradation of rhodamine B aqueous solution.
Moreover, under UV rays, PP/ZnMgAl-LDH films show excellent resistance
to UV aging, which can be attributed to the strong inhibition of ZnMgAl-LDHs
during the production of free radicals in polypropene, as has been
confirmed by electron spin resonance results.
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Zhang, Yi; Yang, Jiaqi; Fan, Faying; Qing, Binju; Zhu, Chaoliang; Shi, Yifei; et al. (2019). Effect of Divalent Metals on the UV-Shielding Properties
of MII/MgAl Layered Double Hydroxides. ACS Publications. Collection. https://doi.org/10.1021/acsomega.9b00721