Polymer-derived mesoporous SiOC/ZnO nanocomposite for the purification of water contaminated with organic dyes

Hojamberdiev, Mirabbos; Prasad, Ravi Mohan; Morita, Koji; Schiavon, Marco A.; Riedel, Ralf

doi:10.1016/j.micromeso.2011.10.015

Cited by 55 publications

(40 citation statements)

References 52 publications

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“…The SAED pattern of representative PZO/chitosan in (Fig. 3(d)) shows a different planes and the spacing of about 0.281, 0.260 and 0.247 nm which correspond to the planes of (1 0 0), (1 0 2), (1 0 1) hexagonal wurtzitetype ZO crystal [28]. To investigate the chemical composition of the composites, the experiments for the energy-dispersive X-ray spectrum (EDXS) were performed in Fig.…”

Section: Morphology Of Pzo and Pzo/chitosanmentioning

confidence: 99%

Synthesis of adsorption cum photocatalytic nature of polyaniline-ZnO/chitosan composite for removal of textile dyes

Pandiselvi

Thambidurai

2015

Desalination and Water Treatment

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A B S T R A C TThe polyaniline-ZnO/chitosan (PZO/chitosan) nanocomposite synthesized using aniline, ZnCl 2 and chitosan through precipitation-oxidation method and the synthesized composite was extensively characterized by Fourier transform infrared spectra, UV-vis spectroscopy, scanning electron microscopy, transmission electron microscopy and X-ray diffraction measurements which indicated that the successful formation of ZO nano-rod present inside the chitosan-polyaniline composite. The adsorption and photocatalytic properties of the prepared samples were evaluated by measuring the decrease in concentration of reactive orange after adsorption in the dark and photocatalytic reaction under UV irradiation, respectively. The influences of initial dye concentration, catalyst amount and pH of the reaction solution on reactive orange decolorization were investigated. It was found that the rate of composite/dye interaction was enhanced with the increased load of composite and retarded with the increase in initial dye concentration and pH. Compared with reactive orange, methylene blue as a target pollutant, the adsorption-photocatalytic activities of the resulting composites under different light sources (dark, sunshade, UV and direct sunlight) were also investigated. Results indicates that the maximum color removal were 96% and 88.5% for reactive orange and methylene blue with the corresponding dye concentration 50 mg L −1 , PZO/chitosan amount of 0.3 g L −1 and neutral pH in 120 min of sunlight exposure respectively. Based on the results, we conclude that PZO/chitosan nanocomposite having both the advantages of photodegradation-adsorption process in the abatement of various wastewater pollutants.

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Section: Morphology Of Pzo and Pzo/chitosanmentioning

confidence: 99%

Synthesis of adsorption cum photocatalytic nature of polyaniline-ZnO/chitosan composite for removal of textile dyes

Pandiselvi

Thambidurai

2015

Desalination and Water Treatment

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“…From our previous works, we know that porous ceramic that is obtained at 700 C shows higher BET specific surface area and higher micropore volume compared to those obtained at higher temperatures at 800 and 900 C. [50,51] Therefore, further characterizations were done only for the ceramic powder synthesized at 700 C. As . Nitrogen gas adsorption-desorption isotherm of SiOC ceramics were found to be of Type I (Figure 4) classified by IUPAC, [52] confirming formation of microporous SiOC ceramic with a BET specific surface area of about 410 m 2 g À1 .…”

Section: Structurementioning

confidence: 99%

Mechanism of Gas Separation through Amorphous Silicon Oxycarbide Membranes

et al. 2015

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Polymer-derived amorphous silicon oxycarbide (SiOC) ceramics are designed for hydrogen separation at high temperatures. To form amorphous SiOC top-coating with the thickness of about 300 nm, tubular porous g-Al 2 O 3 /a-Al 2 O 3 substrates with gradient porosity are threefold coated by vinylfunctionalized polysiloxane and pyrolyzed at 700 C under argon. N 2 -physisorption measurement confirms formation of microporous material with a specific surface area of about 400 m 2 g -1 . Single gas permeance characterization of the SiOC membrane at 300 C reveals H 2 /CO 2 and H 2 /SF 6 ideal permselectivities of about 10 and 320, respectively. The experimental gas permeance data are modeled using solid-state diffusion (for He and H 2 ) and gas translational diffusion (for CO 2 and SF 6 ) mechanisms.

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“…Porous polymer-derived ceramics (PDCs) have recently attracted a lot of interest due to their exceptionally low creep rate, high thermal stability, excellent chemical durability and tunable mechanical properties [1][2][3][4][5], which make PDCs attain the potential applications in catalyst supports, purification of water contaminated with organic dyes, electrodes, supercapacitors, gas storage and drug delivery [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis and electrical properties of porous SiOC ceramics decorated with SiC nanowires

Pan

Yan

Cheng

et al. 2016

Ceramics International

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Polymer-derived mesoporous SiOC/ZnO nanocomposite for the purification of water contaminated with organic dyes

Cited by 55 publications

References 52 publications

Synthesis of adsorption cum photocatalytic nature of polyaniline-ZnO/chitosan composite for removal of textile dyes

Synthesis of adsorption cum photocatalytic nature of polyaniline-ZnO/chitosan composite for removal of textile dyes

Mechanism of Gas Separation through Amorphous Silicon Oxycarbide Membranes

In situ synthesis and electrical properties of porous SiOC ceramics decorated with SiC nanowires

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