New photocatalysts based on MIL-53 metal–organic frameworks for the decolorization of methylene blue dye

Du, Jingjing; Yuan, Yupeng; Sun, Jiaxin; Peng, Fumin; Xia, Junqiang; Qiu, Ling-Guang; Xie, Anjian; Zhu, Junfa

doi:10.1016/j.jhazmat.2011.04.029

Cited by 436 publications

(177 citation statements)

References 41 publications

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“…Figure 2a is the FTIR spectra of SiO 2 -NH 2 . The bands at 3423 and 1633 cm -1 were assigned to the N-H stretching and bending vibrations of the free amino groups on the surface of nanosilica [20,21]. The -CH 2 groups were confirmed by C-H stretching at 2928 cm -1 .…”

Section: Preparation and Characterization Of Catecholfunctionalized Nmentioning

confidence: 93%

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

Cui

Wang

Peng

et al. 2015

J Sol-Gel Sci Technol

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We prepared the catechol-functionalized nanosilica for adsorption of germanium (Ge) ions from aqueous media. The functionalized nanosilica was characterized by FTIR, TGA, TEM, BET, and XPS. The influence of pH, Ge initial concentration, and time of the adsorption process was investigated. Under the optimum condition, the maximum adsorption capacity of Ge ions was 0.048 mg m -2 at pH 4.5. The adsorption mechanism is the chelating interaction between hydroxyl and Ge(OH) 4 . The functionalized nanosilica was able to selectively adsorb Ge ions from tellurium(IV) and boron. Langmuir isotherm was found to better fit the experiment data rather than Freundlich isotherm. The kinetics of the adsorption process of Ge ions on the functionalized nanosilica was investigated using the pseudo-first-order and pseudo-second-order models, and the results indicated that the pseudosecond order equation model provided the best correlation with the experimental results. Graphical Abstract& Shixing Wang

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Section: Preparation and Characterization Of Catecholfunctionalized Nmentioning

confidence: 93%

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

Cui

Wang

Peng

et al. 2015

J Sol-Gel Sci Technol

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“…Meanwhile, some MOFs have been found to be effective for light harvesting and behave as semiconductors, which provide the possibility to use MOFs as photocatalysts (Horiuchi et al 2012(Horiuchi et al , 2013Nasalevich et al 2014;Sha et al 2014;Wang et al 2012;Zhang and Lin 2014). Photocatalytic degradation of organic compounds, especially organic dyes over MOFs, has thus been investigated since a few years ago (Das et al 2011;Du et al 2011;Guo et al 2012;Laurier et al 2013;Liu et al 2013;Mahata et al 2006;Yang et al 2012). Moreover, some studies have already shown that it is available as a semiconductor carrier.…”

Section: Introductionmentioning

confidence: 99%

Solar Light Photocatalytic Degradation of Nitrite in Aqueous Solution Over CdS Embedded on Metal–Organic Frameworks

Yang

Chen

et al. 2015

Water Air Soil Pollut

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A CdS embedded metal-organic framework (MIL-100) composite was synthesized and used for photocatalytic degradation of nitrite ions. The obtained samples were characterized by a series of techniques such as X-ray diffraction (XRD), N 2 adsorption/desorption, transmission electron microscopy (TEM) and UVVis diffuse reflectance spectra (DRS). The results show that CdS nanoparticles were dispread and embedded on the MIL-100 crystals. The CdS/MIL-100 composites exhibited significant activities for photocatalytic degradation of nitrite ions through a disproportionation process in a neutral aqueous solution without any sacrificial reagents. When 20 wt% of CdS was embedded, the highest degradation yield of 92 % was achieved in 10-ppm NaNO 2 aqueous solution under simulated solar light irradiation, which was fivefold of bare CdS. The enhancement in photocatalytic activities could be contributed to photosensitization and supporting of metalorganic framework scaffold.

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“…The current interest in the crystal engineering of coordination polymers (CPs) stems not only from their fascinating molecular topologies but also from their potential applications as smart porous [1][2][3][4][5], catalytic [6][7][8], magnetic [9,10], and optical materials [11,12]. Among all these CPs, it is found that polycarboxylate anions exhibit versatile coordination fashions to interlink metal atoms to generate intriguing variety of architectures and topologies.…”

Section: Introductionmentioning

confidence: 99%

“…4c, 1 mmol of isopropanol (IPA) as hydroxyl radical (ÁOH) scavenger is added, the degradation of MB was significantly depressed, suggesting that the ÁOH pathways have a crucial role in the process of MB oxidation. According to previous reports[6,34], a possible pathway for the photocatalytic degradation of MB with polymer 1 is proposed as follows: Under UV light irradiation, electrons (e -) in the HOMO (or valence band) of compound was excited to its LUMO (or conduction band), and holes (h ? ) was left in the valence band.…”

mentioning

confidence: 99%

Pb(II) Coordination Polymer Based on Mixed Ligands: Syntheses, Structures, Photoluminescence, and Photocatalysis

Gao

Niu

et al. 2015

J Inorg Organomet Polym

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A new coordination polymer [Pb(ttbt)(1,4-bdoa)] n Á2nH 2 O (1) (1,4-H 2 bdoa = benzene-1,4-dioxyacetic acid and ttbt = 10, 11,12,13-tetrahydro-4,5,9,14-tetraazabenzo[b]triphenylene) has been obtained under hydrothermal conditions. The structure of polymer 1 has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, infrared spectra (IR), powder X-ray diffraction (PXRD) and diffusereflectance UV-vis spectrum. Polymer 1 displays a onedimensional chain structure, which is further extended into a two-dimensional layer structure through p-p stacking interactions and hydrogen-bonding interactions. The photoluminescence behavior of polymer 1 was also discussed in paper. Meanwhile, polymer 1 represents good performance for the photocatalytic degradation of organic dyes under UV irradiation.

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New photocatalysts based on MIL-53 metal–organic frameworks for the decolorization of methylene blue dye

Cited by 436 publications

References 41 publications

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

Solar Light Photocatalytic Degradation of Nitrite in Aqueous Solution Over CdS Embedded on Metal–Organic Frameworks

Pb(II) Coordination Polymer Based on Mixed Ligands: Syntheses, Structures, Photoluminescence, and Photocatalysis

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