Visible light photodegradation of dyes over mesoporous titania prepared by using chrome azurol S as template

Gong, Wenjuan; Tao, Huiwang; Zi, Guoli; Yang, Xiaoyun; Yan, Yali; Li, Bin; Wang, Jiaqiang

doi:10.1007/s11164-009-0105-x

Cited by 14 publications

(11 citation statements)

References 47 publications

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“…To the best of our knowledge, there is no report on using natural pigments as a template for synthesis of mesoporous materials, let alone the simultaneous achievement of highly crystalline mesoscopic frameworks and visible-light photocatalytic activity. In particular, the prepared mesoporous TiO 2 show good activity in the phenol degradation under visible-light irradiation, which have not yet studied in our previous reports [14,15]. , an edible red shell and heart radish which have a long planting history locally.…”

Section: Introductionmentioning

confidence: 87%

“…Recently, Xu et al [13] have also prepared mesoporous silica by using basic fuchsin as template and methylene diisocyanate or aminopropyltriethoxysilane as bridging molecules. More recently, in our group chrome azurol S [14] and even commercial synthetic dyes [15] have been successfully used as templates in synthesis of mesoporous anatase TiO 2 , shifting the absorption edge of TiO 2 to the visible-light range, narrowing the band gap, and resulting in strong absorption in the visible region. The prepared TiO 2 exhibited significant photocatalytic activity in the degradation of four dyes, gentian violet, methyl violet, rhodamine B, and methylthionine chloride under solar light irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Visible-Light Degradation of Dyes and Phenols over Mesoporous Titania Prepared by Using Anthocyanin from Red Radish as Template

Yan

Gong

Chen

et al. 2014

International Journal of Photoenergy

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Heterogeneous photocatalysis is able to operate effectively to eliminate organic compounds from wastewater in the presence of semiconductor photocatalyst and a light source. Although photosensitization of titania by organic dyes is one of the conventional ways for visible-light utilization of titania, previous studies have not yet addressed the use of natural food coloring agents as templates in the synthesis of mesostructured materials, let alone the simultaneous achievement of highly crystalline mesoscopic framework and visible-light photocatalytic activity. In this work, anthocyanin, a natural pigment from red radish was directly used as template in synthesis of highly crystalline mesoporous titania. The synthesized mesoporous titania samples were characterized by a combination of various physicochemical techniques, such as XRD, SEM, HRTEM, nitrogen adsorption/desorption, and diffuse reflectance UV-Vis. The prepared mesoporous titania photocatalyst exhibited significant activity under visible-light irradiation for the degradation of dyes and phenols due to its red shift of band-gap-absorption onset and visible-light response as a result of the incorporation of surface carbon species.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Visible-Light Degradation of Dyes and Phenols over Mesoporous Titania Prepared by Using Anthocyanin from Red Radish as Template

Yan

Gong

Chen

et al. 2014

International Journal of Photoenergy

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“…3b). The main peak at 284.6 eV is ascribed to the carbon atoms in C-C, C=C, and C-H bonds [18] . The other peaks at 286.4 eV, is assigned to the C-O, and the peak at 287.8 eV is attributed to the C= O bond [19] .…”

Section: Resultsmentioning

confidence: 99%

Synthesis of MnFe$lt;inf$gt;2$lt;/inf$gt;O$lt;inf$gt;4$lt;/inf$gt;/cellulose aerogel nanocomposite with strong magnetic responsiveness

Li¹,

Jiao²,

Wan³

2017

Front. Agr. Sci. Eng.

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Cellulose aerogel, with abundant three-dimensional architecture, has been considered as a class of ideal eco-friendly matrix materials to encapsulate various nanoparticles for synthesis of miscellaneous functional materials. In the present paper, hexagonal single-crystalline MnFe 2 O 4 was fabricated and inserted into the cellulose aerogel using an in situ chemical precipitation method. The as-prepared MnFe 2 O 4 nanoparticles were well dispersed and immobilized in the micro/nanoscale pore structure of the aerogel, and exhibited superparamagnetic behavior. In addition, the nanocomposite was easily actuated under the effect of an external magnetic field, revealing its strong magnetic responsiveness. Combined with the advantages of environmental benefits, facile synthesis method, strong magnetic responsiveness, and unique structural feature, this class of MnFe 2 O 4 / cellulose aerogel nanocomposite has possible uses for applications such as magnetically actuated adsorbents.

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“…However, the use of suspensions requires separation and recycling of the ultrafine catalyst from the treated liquid and can be an inconvenient, time-consuming, and expensive process. The key to the problem of industrializing the technology seems to be simple and low-cost immobilization of catalysts [20][21][22][23] on solid media is suitable for the treatment process [24].…”

Section: Introductionmentioning

confidence: 99%

Easy simultaneous synthesis–immobilization of nanosized CuO–ZnO on perlite as a photocatalyst for degradation of acid orange 7 from aqueous solution in the presence of visible light

Khani

Pezeshki

2015

Desalination and Water Treatment

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A B S T R A C TIn order to improve the photocatalytic activity, the researchers have loaded some metals or metal oxides on semiconductors such as TiO 2 and ZnO surface. This study investigated the degradation of acid orange 7 (AO7) from aqueous solution by prepared nanosized CuOZnO immobilized on expanded perlite (nCuO-ZnO-P) as a photocatalyst in the presence of visible light. First, nCuO-ZnO-P was simultaneously synthesized-immobilized by pyrolysis of previously adsorbed Cu 2+ and Zn 2+ on perlite at 723.15 K in oven. The results showed that, unlike ZnO, the prepared nanosized photocatalyst has an effective photocatalytic activity in the presence of visible light. The effective parameters on AO7 degradation which were evaluated in the designed batch photoreactor included initial concentration of AO7 (C 0 ), pH, the granule size of used perlite for immobilization (D), and temperature (T). It was found that the content of degradation was followed by increasing order: C 0 = 15 > 25 > 35 > 45 > 55 mg l −1 , pH 7 > 8 > 9 > 6 > 5, D = 0.50 > 0.75 > 1.00 > 1. 25 > 1.50 mm, and T = 318.15 > 308.15 > 298.15 > 288.15 > 278.15 K.

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Visible light photodegradation of dyes over mesoporous titania prepared by using chrome azurol S as template

Cited by 14 publications

References 47 publications

Visible-Light Degradation of Dyes and Phenols over Mesoporous Titania Prepared by Using Anthocyanin from Red Radish as Template

Visible-Light Degradation of Dyes and Phenols over Mesoporous Titania Prepared by Using Anthocyanin from Red Radish as Template

Synthesis of MnFe$lt;inf$gt;2$lt;/inf$gt;O$lt;inf$gt;4$lt;/inf$gt;/cellulose aerogel nanocomposite with strong magnetic responsiveness

Easy simultaneous synthesis–immobilization of nanosized CuO–ZnO on perlite as a photocatalyst for degradation of acid orange 7 from aqueous solution in the presence of visible light

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