High photocatalytic degradation activity of the polyvinyl chloride (PVC)–vitamin C (VC)–TiO2 nano-composite film

Yang, Changjun; Gong, Chuqing; Peng, Tianyou; Deng, Kejian; Zan, Ling

doi:10.1016/j.jhazmat.2010.01.056

Cited by 87 publications

(57 citation statements)

References 31 publications

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“…In contrast, the fractured surfaces of the nanocomposite (Figures 5b, c and d) are uneven and consist of a large number of squamous structures, exhibiting plastic deformation characteristics. The overall size of the plastic deformation zone is related to the fracture toughness [25,26]. The SEM results indicate that the nanocomposites have higher toughness than pristine PVC.…”

Section: Morphology Of Pvc/pmma-graftedmentioning

confidence: 99%

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

Liu¹,

Luo²,

Jia³

et al. 2011

Express Polym. Lett.

104

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Halloysite nanotubes(HNTs) grafted with Polymethyl methacrylate(PMMA) were synthesized via radical polymerization. The properties of PMMA-grafted HNTs were characterized by transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The results showed that PMMA grafted to the surfaces of HNTs successfully. Then, PVC/PMMA-grafted HNTs nanocomposites were prepared by melt compounding. The morphology, mechanical properties and thermal properties of the nanocomposites were investigated. PMMA-grafted HNTs can effectively improve the toughness, strength and modulus of PVC. The glass transition and thermal decomposition temperatures of PVC phase in PVC/PMMA-grafted HNTs nanocomposites are shifted toward slightly higher temperatures. The grafted HNTs were uniformly dispersed in PVC matrix as revealed by TEM photos. The fracture surfaces of the nanocomposites exhibited plastic deformation feature indicating ductile fracture behaviors. The improvement of toughness of PVC by PMMA-grafted HNTs was attributed to the improved interfacial bonding by grafting and the toughening mechanism was explained according to the cavitation mechanism

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Section: Morphology Of Pvc/pmma-graftedmentioning

confidence: 99%

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

Liu¹,

Luo²,

Jia³

et al. 2011

Express Polym. Lett.

104

View full text Add to dashboard Cite

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“…The second peak appearing at 222 nm proves the existence of Al 2 O 3 NPs in the NC structure, which cannot be seen in the PVC spectrum. 40 As shown in the NCs transmittance spectrum (Fig. 12), the transition intensity is reduced due to the addition of modified Al 2 O 3 .…”

Section: Optical Clarity Of Pvc/α-al 2 O 3 -Ca-aa Filmsmentioning

confidence: 81%

A Benign and Simple Strategy for Surface Modification of Al₂O₃ Nanoparticles with Citric Acid and L(+)‐Ascorbic Acid and Its Application for the Preparation of Novel Poly(vinyl chloride) Nanocomposite Films

Mallakpour

Sadeghzadeh

2015

Adv Polym Technol

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ABSTRACT:In this research, the preparation of nanocomposites (NCs) containing nonaggregated nanoparticles (NPs) was studied. Alumina NPs were functionalized by two coupling agents, citric acid and ascorbic acid. NCs of poly(vinyl chloride) (PVC) doped with varying amounts of modified Al 2 O 3 NPs were synthesized via the ultrasonication method. The X-ray diffraction confirmed that the structure of the modified Al 2 O 3 NPs was still preserved in a pure crystalline phase with the hexagonal structure. Surface morphology showed a picturesque network structure due to the existence of hydrogen bonds in the modified Al 2 O 3 . It also proved good dispersion of NPs in the polymer matrix in nanoscale. C

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“…Photocatalytic activity of Coupled TiO 2 6.1 Photocatalytic activity of TiO 2 with organic compounds Photodegradable polyvinyl chloride (PVC)-vitamin C(VC)-TiO 2 nanocomposite film show high photocatalytic activity which can be explained on the basis of the formation of a Ti IV -VC charge-transfer complex with five-member chelate ring structure and followed by rapid photogenerated charge separation [145]. Enhanced photocatalytic activity of the novel 1,3-bis(N-3H-3,3-dimethyl-2-methylene indolenine) squaraine dye (ISQ) sensitized TiO 2 nanocomposites was reported by Li et al, [146] for the degradation of MB under the visible-light irradiation.…”

Section: Photocatalytic Activity Of Non Metal Doped Tio 2 Nmsmentioning

confidence: 99%

PHOTOCATALYTIC ACTIVITY OF TiO2 NANOMATERIAL

Jain

Vaya

2017

J. Chil. Chem. Soc.

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Nanomaterials synthesize by different techniques exhibit excellent photocatalytic activity. These catalysts could be employed for environmental remediation, renewable energy sources, photocatalysis and many other applications in various fields. Nanophotocatalyst has been used for the treatment of hazardous materials such as industrial effluents containing complex organic compounds, dyes and metal ions successfully. The multidimensional study of composition, shape, size, surface area and nanostructure and different operating parameters like pH, concentration, temperature etc, of these photocatalyst help in current and further development of photocatalysts for different applications . The photocatalytic activity of nanoparticles has made a great contribution in providing definitive mechanistic information about the photocatalytic processes.The main aim of this review paper is to give an overview of the enhanced photocatalytic activities of titanium dioxide (TiO 2 ) nanoparticles. This review includes the basic properties of photocatalyst and mechanim of photocatalysis process followed by unique photocatalytic properties and research of TiO 2 nanoparticles as photocatalysts. An effort has also been made to give an overview of expedient photocatalytic activity of these doped nanoparticles. Many investigators have reported the enhanced photocatalytic activity by the degradation of dyes as a model compound.Key Words: photocatalysts, TiO 2 , nanoparticles, AOPs. INTRODUCTIONToday, the industrial revolution is putting its negative impacts on the entire globe. Over the year's complexities, varieties and the amount of hazardous compounds are increasing in wastewater discharged by various printing, dyeing, textile and other chemical industries into the ecosystem. These compounds are highly carcinogenic and mutagenic. Apart from aesthetic pollution, they are causing eutrophication, high Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD). In addition to that, these compounds absorb sunlight strongly which affects the photosynthetic activity of aquatic plants and seriously threatening the whole ecosystem [1,2]. Now days the perilous effects of organic dyes to the environment is a particular concern. To resolve this problem, the photocatalytic decomposition processes are being employed by many researchers to degrade the organic pollutants of industrial wastewater before discharge into receiving media [3]. Although various chemical and physical process are available for the degradation of textile effluents but they generate non-biodegradable contaminations and further require treatment involving expensive procedure. Conventional techniques such as coagulation/ flocculation, membrane separation, absorption methods as well as biological methods are also inefficient for removal of complex organic compounds [4][5][6][7][8][9][10][11]. To resolve such types of problems Advanced Oxidation Processes (AOPs) are proven to be most promising technique which is based on the generation of highly reactive hydroxyl radica...

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High photocatalytic degradation activity of the polyvinyl chloride (PVC)–vitamin C (VC)–TiO2 nano-composite film

Cited by 87 publications

References 31 publications

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

A Benign and Simple Strategy for Surface Modification of Al₂O₃ Nanoparticles with Citric Acid and L(+)‐Ascorbic Acid and Its Application for the Preparation of Novel Poly(vinyl chloride) Nanocomposite Films

PHOTOCATALYTIC ACTIVITY OF TiO2 NANOMATERIAL

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High photocatalytic degradation activity of the polyvinyl chloride (PVC)–vitamin C (VC)–TiO2 nano-composite film

Cited by 87 publications

References 31 publications

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

Enhancement of mechanical properties of poly(vinyl chloride) with polymethyl methacrylate-grafted halloysite nanotube

A Benign and Simple Strategy for Surface Modification of Al2O3 Nanoparticles with Citric Acid and L(+)‐Ascorbic Acid and Its Application for the Preparation of Novel Poly(vinyl chloride) Nanocomposite Films

PHOTOCATALYTIC ACTIVITY OF TiO2 NANOMATERIAL

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A Benign and Simple Strategy for Surface Modification of Al₂O₃ Nanoparticles with Citric Acid and L(+)‐Ascorbic Acid and Its Application for the Preparation of Novel Poly(vinyl chloride) Nanocomposite Films