A new polystyrene–TiO2 nanocomposite film and its photocatalytic degradation

Zan, Ling; Tian, Lihong; Liu, Zhongshi; Peng, Zhenghe

doi:10.1016/j.apcata.2003.12.046

Cited by 160 publications

(88 citation statements)

References 13 publications

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“…Polystyrene is widely used in building and packaging as expanded foam, but undergoes light-induced yellowing [34]. As previously noticed [26], and confirmed in our study, TiO 2 particles can actually speed up its photo-oxidative degradation rather than providing photoprotection. Sunscreens often include TiO 2 particles as inert light scatters and are supposed to provide improved protection in the UVA region [35].…”

Section: Discussionsupporting

confidence: 72%

“…Zan et al (2004) showed that TiO2 particles enhanced photo-oxidative degradation of polystyrene by generating reactive oxygen species under UV-illumination [26]. The hydroxyl radicals and active oxygen species formed attack the C-H bond in the polymer chain to form the carbonyl group [26]. showed that the crystal structure also plays an important role as anatase TiO2 nanoparticles were intrinsically more photocatalytically active than rutile TiO2 nanoparticles in photo-oxidative degradation of polyurethane [27].…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

“…Interestingly, nylon photo-oxidized at the highest rate for the first 100 h, but the rapid photo-oxidation rate slowed down for the remainder of the treatment period ( Figure 5, left inset). Zan et al (2004) showed that TiO2 particles enhanced photo-oxidative degradation of polystyrene by generating reactive oxygen species under UV-illumination [26]. The hydroxyl radicals and active oxygen species formed attack the C-H bond in the polymer chain to form the carbonyl group [26].…”

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

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Exploring the Use of Unprocessed Waste Chicken Eggshells for UV-Protective Applications

2017

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Photodegradation causes a steady loss of the useful physical, mechanical and optical properties of materials, necessitating their replacement over time. Because UV (Ultraviolet) light is most harmful in this regard, many materials now contain UV-protective additives. However, these additives are not always effective and durable, can be expensive, and their natural extraction or synthetic production can be harmful to the environment. Here, we investigated the use of unprocessed chicken eggshells in providing UV protection to two commonly used synthetic polymers: polystyrene and nylon. We show that unprocessed chicken eggshells provide a durable and effective UV protection. Our data sets the stage for future research to find a practical way to use the large amounts of unprocessed chicken eggshell waste as novel, economically appealing and environmentally friendly UV-protective additives.

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Section: Discussionsupporting

confidence: 72%

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

Section: Fourier-transform Infrared Spectroscopymentioning

confidence: 99%

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Exploring the Use of Unprocessed Waste Chicken Eggshells for UV-Protective Applications

2017

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“…Therefore, it seems that the composition of plastic with TiO 2 nanoparticles is a useful means to decompose solid polymer in the open air. Researchers have recently studied the solid-phase photocatalytic degradation of polymer-TiO 2 nano-composite [8][9][10][11][12] . But the photodegradation properties of PP nano-composites has rarely been studied.…”

Section: Hoomentioning

confidence: 99%

Photocatalytic degradation of polypropylene/TiO2 nano-composites

et al. 2014

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In this research, we have investigated the photocatalytic degradation of carbon-coated TiO 2 nanoparticles in polypropylene-based nano-composites. For this purpose, polypropylene-based nano-composites were prepared using carbon-coated TiO 2 nanoparticles and commercially available TiO 2 nanoparticles (Degussa, P25). Our results from SEM, FTIR, and tensile tests showed that the photocatalytic property of TiO 2 causes chain scission reactions, crosslinking and consequently photocatalytic degradation of polypropylene that affects the mechanical properties of exposed nano-composites. We have observed that with greater carbon content of the TiO 2 nano-powders, there is less photocatalytic degradation.

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“…A number of authors have conducted studies using TiO 2 and have documented it as environment friendly and safe [37][38][39][40][41]. But a research conducted has shown the amorphous TiO 2 and SiO 2 particles as hazardous when inhaled and have lead to water pollution affecting the fishes in the tested areas.…”

Section: Hazardous Effects Of Tiomentioning

confidence: 99%

Implicating Nanoparticles as Potential Biodegradation Enhancers: A Review

Bhatia¹,

Girdhar²,

Ch³

et al. 2013

J Nanomed Nanotechol

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Nanoparticles have entered the scientific world with varied potential applications, of which studies are often conducted in relation to pharmaceuticals as potent drug delivery systems. They perk up pharmacokinetic and pharmacodynamic properties. But, in the era of innovation the studies have revealed a novel side of nanoparticles that has shown their unique ability in enhancement of polymer degradation. Petroleum-plastics like Low Density Polyethylene (LDPE) being an unavoidable necessity, has crossed high levels of environmental pollution due to its poor waste disposal and thus, calls for better ways of its degradation management. The conventional methods have shown a limited degradation with environmental constraints which have been overcome by microbial and enzymatic process of biodegradation. Nanoparticles influence the growth profiles of LDPE degrading microorganisms to augment the biodegradation rate, a major conundrum faced. The review primarily focuses on researches related to the degradation aspect where nanoparticles have acted as enhancers of biodegradation.

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A new polystyrene–TiO2 nanocomposite film and its photocatalytic degradation

Cited by 160 publications

References 13 publications

Exploring the Use of Unprocessed Waste Chicken Eggshells for UV-Protective Applications

Exploring the Use of Unprocessed Waste Chicken Eggshells for UV-Protective Applications

Photocatalytic degradation of polypropylene/TiO2 nano-composites

Implicating Nanoparticles as Potential Biodegradation Enhancers: A Review

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