Bio-Inspired nacre-like nanolignocellulose-poly (vinyl alcohol)-TiO2 composite with superior mechanical and photocatalytic properties

Abstract

Nacre, the gold standard for biomimicry, provides an excellent example and guideline for assembling high-performance composites. Inspired by the layered structure and extraordinary strength and toughness of natural nacre, nacre-like nanolignocellulose/poly (vinyl alcohol)/TiO2 composites possessed the similar layered structure of natural nacre were constructed through hot-pressing process. Poly (vinyl alcohol) and TiO2 nanoparticles have been used as nanofillers to improve the mechanical performance and synchronously endow the superior photocatalytic activity of the composites. This research would be provided a promising candidate for the photooxidation of volatile organic compounds also combined with outstanding mechanical property.

The properties of fibreboard based on nanolignocelluloses/CaCO3/PMMA composite synthesized through mechano-chemical method

“…More attention has been paid to the research of lignocellulose-based composites such as the lignocellulose-plastic composites 6–10 , lignocellulose/inorganic nanoparticles composites 11–13 , fiber/organic phase composites 14–18 . However, there have been only few literature reporting on the synthesis of high mechanical properties slab-like nanolignocellulose/inorganic composites.…”

“…However, there have been only few literature reporting on the synthesis of high mechanical properties slab-like nanolignocellulose/inorganic composites. It is thought that nanoparticles could dramatically induce an improvement in mechanical and electrical properties, heat resistance, radiation resistance 19 , and other properties as a result of the nanometric scale dispersion of the filler in the lignocellulose matrix 11 . These composites generally exhibit superior stiffness, strength, and heat distortion temperatures with respect to unreinforced polymers 20 .…”

Preparation of High Mechanical Performance Nano-Fe3O4/Wood Fiber Binderless Composite Boards for Electromagnetic Absorption via a Facile and Green Method

“…Figure 3 b shows the XRD patterns of cellulose, nano-Fe 3 O 4 and NFF composites. The two diffraction peaks at 2 θ = 22.8° and 16.2°, standing for (002) plane and (101) plane, respectively, which were the characteristic peaks of cellulose [ 27 ]. It can be observed that the peaks appeared at 2 θ = 18.2°, 30.6°, 35.7°, 43.4°, 57.4°, and 62.9°, which stand for the (111), (220), (311), (400), (511) and (440) planes of the Fe 3 O 4 (PDF No.…”

“…In particular, as the content of nano-Fe 3 O 4 increased, the relative intensities of diffraction peaks significantly increased. The average crystalline size of nano-Fe 3 O 4 particles on the fiber can be obtained by the Debye-Scherer equation [ 27 ]: where λ was the wavelength of the radiation, K was 0.89, 2 θ was the Bragg’s angle, and β was the full width at half maximum of (311) plane. The average crystalline size of the nano-Fe 3 O 4 particles was approximately 18.2 nm.…”

Polyacrylamide exotemplate-assisted synthesis of hierarchically porous nanostructured TiO2macrobeads for efficient photodegradation of organic dyes and microbes

“…33 Likewise, the nacre-like nanolignocellulosepoly(vinyl alcohol)-TiO 2 composite microstructures have been used for photodegradation of methyl orange. 34 Whereas, the hierarchical ower-like Co 3Àx Fe x O 4 hollow microspheres and the hierarchically porous Fe 3 O 4 @SiO 2 @TiO 2 @Pt core-shell microspheres presented improved photocatalytic degradation of methylene blue and rhodamine B together with their rapid magnet-assisted separation. 35,36 Moreover, a polymer-templatedirected TiO 2 and the mixed TiO 2 /metal oxide (Al, Ga and In) microspheres have been developed for the efficient photocatalytic decomposition of 2-chlorophenol.…”