Adsorption Removal of Methyl Orange from Aqueous Solution by Mesoporous Al2O3

Mesoporous Al2O3 was synthesized from aluminum nitrate using different surfactants as structure-directing agents. The adsorption capability of prepared Al2O3 was studied in methyl orange solution. The Al2O3 prepared by Tween80-mediated has the best adsorption capability. The surfactant dosage influences the pore structure and adsorption capability of Al2O3, the best Tween80 dosage is 0.3g. Pore size distribution shows that the prepared Al2O3 has mesoporous structure, the pore diameter mainly centers at 1-4nm. For the inner diffusional resistance of the pore canal to achieve adsorption balance, suitable adsorption time is 80 minutes.

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The Adsorption Performance of Polyaniline/ZnO Synthesized through a Two-Step Method

Crystals ◽

10.3390/cryst12010034 ◽

2021 ◽

Vol 12 (1) ◽

pp. 34

Author(s):

Yiqi Jing ◽

Yongliang Lai ◽

Shujia Zhang ◽

Ruijuan Wang ◽

Zhuohui Xu ◽

...

Keyword(s):

Kinetic Equation ◽

Methyl Orange ◽

Methyl Orange Solution ◽

Order Kinetic ◽

Adsorption Efficiency ◽

X Ray Diffraction ◽

Step Method ◽

Adsorption Effect ◽

Adsorption Time ◽

Orange Solution

Polyaniline/Zinc oxide (PANI/ZnO) were prepared using a two-step method, and the morphology and the structure of PANI/ZnO composites were characterized through a scanning electron microscope (SEM) and X-ray diffraction (XRD). Factors such as the content of ZnO, the adsorption time and the mass of the adsorbent, and the kinetic equation of PANI/ZnO as adsorbents for the adsorption of methyl orange solution were studied. The results showed that the adsorption efficiency of methyl orange by polyaniline with the increase of adsorbent mass firstly increased and then decreased. Among the composites with the same quality, PANI composites with 8% ZnO have a better adsorption effect for methyl orange, and the maximum adsorption ratio can reach 69% with the increase of adsorption time at 0.033 g; With the increase of adsorbent mass, the adsorption efficiency of PANI composites with 8% ZnO increased continuously. When the mass increased from 0.033 g to 0.132 g, the adsorption rate increased from 69% to 93%, and the adsorption of the methyl orange solution by PANI/ZnO composites was more in line with the quasi-second-order kinetic equation.

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The Preparation and Sunlight Activity of Nanocomposite Photocatalysts for Degradation of Methyl Orange Solution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.1397 ◽

2013 ◽

Vol 750-752 ◽

pp. 1397-1400 ◽

Cited By ~ 1

Author(s):

Li Mei Duan ◽

Jing Hai Liu ◽

Xiu Ting Xu ◽

Ling Xu ◽

Zong Rui Liu

Keyword(s):

Methyl Orange ◽

Synthesis Method ◽

Reaction System ◽

Methyl Orange Solution ◽

Degradation Efficiency ◽

Composite Photocatalyst ◽

One Step ◽

Orange Solution ◽

Xrd And Tem ◽

Degradation Of Methyl Orange

Applying one-step solvothermal synthesis method, different CdS/TiO2 nanocomposite materials are obtained by changing the ratio of sulfur and titanium sources. The composite structure and morphology are determined by XRD and TEM. Taking the degradation of methyl orange solution as a model reaction, the photocatalytic activity of CdS/TiO2 composite materials is investigated. The results show that the amount of CdS in composite photocatalyst has great effects on the degradation efficiency of methyl orange under the irradiation of sunlight, and the lower pH of reaction system is also needed to sustain the high degradation efficiency for methyl orange.

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Enhanced adsorption removal of methyl orange from aqueous solution by nanostructured proton-containing δ-MnO2

Journal of Materials Chemistry A ◽

10.1039/c4ta07112c ◽

2015 ◽

Vol 3 (10) ◽

pp. 5674-5682 ◽

Cited By ~ 94

Author(s):

Yan Liu ◽

Chao Luo ◽

Jian Sun ◽

Haizhen Li ◽

Zebin Sun ◽

...

Keyword(s):

Aqueous Solution ◽

Methyl Orange ◽

Solid State ◽

Solid State Reaction ◽

Proton Exchange ◽

Precipitation Method ◽

Homogeneous Precipitation ◽

Adsorption Removal ◽

Homogeneous Precipitation Method ◽

Enhanced Adsorption

Two nanostructured proton-containing δ-MnO2 (H-δ-MnO2) materials were synthesized through proton exchange for K-containing δ-MnO2 (K-δ-MnO2) nanosheets and nanoparticles prepared by the hydrothermal homogeneous precipitation method and solid-state reaction.

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Influence of Ag Doping on the Crystal Structure and Photocatalytic Activity of FeVO4

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.919 ◽

2011 ◽

Vol 197-198 ◽

pp. 919-925 ◽

Cited By ~ 2

Author(s):

Min Wang ◽

Qiong Liu

Keyword(s):

Photocatalytic Activity ◽

Methyl Orange ◽

Photoelectron Spectroscopy ◽

Methyl Orange Solution ◽

Precipitation Method ◽

X Ray Diffraction ◽

Electron Hole ◽

X Ray ◽

Orange Solution ◽

Decoloration Rate

Silver (Ag+) doped iron (III) vanadate (FeVO4) samples are prepared by the precipitation method and then characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy(XPS). The photocatalytic activity under visible light is evaluated by photocatalytic degradation of methyl orange (MO) in the solution. The results show that both FeVO4 and Ag+ doped FeVO4 samples are triclinic, the later have different surface morphology, and some needle-shaped materials appear in the later. From XPS, there are more Fe2+ ions in Ag+ doped FeVO4 sample than that in FeVO4 one without Ag+. It indicates that Ag+ doping can increase the density of the surface oxygen vacancies of catalysts, which can act as electron traps promoting the electron-hole separation and then increase the photo-activity. The decoloration rate after Ag+ doping against methyl orange solution can reach about 81%, and be more about 20％ than that of pure FeVO4.

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Preparation and Characterization of Expanded Graphite with TiO2 Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.807 ◽

2011 ◽

Vol 197-198 ◽

pp. 807-810

Author(s):

Li Qin Wang ◽

Xiang Ni Yang ◽

Xiu Li Zhao ◽

Rui Jun Zhang ◽

Yu Lin Yang

Keyword(s):

Methyl Orange ◽

Expanded Graphite ◽

Methyl Orange Solution ◽

Tetrabutyl Titanate ◽

Excellent Performance ◽

Decolorization Rate ◽

Preparation Conditions ◽

The Rich ◽

Orange Solution

The composites of expanded ghaphite with TiO2(EG/TiO2) have been prepared in the method of precursor mixing, and the optimum preparation conditions have been studied. The morphology and crystal structure of the EG/TiO2composites have been characterized by the means of SEM and XRD. Also their performance of decolorization for methyl orange solution has been researched. The results are shown as follows: the EG/TiO2composites maintain the rich porous and network structure of EG, and a lot of anatase TiO2particles widely distribute on surfaces and in layers of EG. Compared with TiO2sol, taking tetrabutyl titanate as titanium source, the prepared EG/TiO2composites have better performance. Increasing the added amount of tetrabutyl titanate, the decolorization rate of methyl orange solution increases at first, and then decreases. When adding 2 mL tetralbutyl titanate, the decolorization rate is at the peak, up to 98.4%. These results show the composites have excellent performance of decolorization for methyl orange solution. We suppose it is mainly due to the interaction between the adsorption of EG and the degradation of TiO2particles.

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Photocatalytic decolorization of methyl orange solution with KIO3

Desalination and Water Treatment ◽

10.1080/19443994.2014.896288 ◽

2014 ◽

Vol 54 (8) ◽

pp. 2252-2258 ◽

Cited By ~ 1

Author(s):

Jianzhang Li ◽

Junbo Zhong ◽

Tao Wang ◽

Jun Zeng ◽

Jinjin He ◽

...

Keyword(s):

Methyl Orange ◽

Methyl Orange Solution ◽

Photocatalytic Decolorization ◽

Orange Solution

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Synthesis and Characterization of Refluxed Sols and TiO2 Thin Films Using TiOSO4

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.2189 ◽

2007 ◽

Vol 336-338 ◽

pp. 2189-2192

Author(s):

Lei Ge ◽

Ming Xia Xu ◽

Hai Bo Fang ◽

Ming Sun

Keyword(s):

Thin Films ◽

Methyl Orange ◽

Uv Light ◽

Methyl Orange Solution ◽

Light Transmittance ◽

Tio2 Films ◽

Tio2 Thin Films ◽

Photocatalytic Activities ◽

Orange Solution ◽

Degradation Of Methyl Orange

Nano anatase TiO2 thin films on glass slide substrates were prepared via a dip-coating method using refluxed sols (RS) as precursors, then dried under infrared light and calcined at 500°C for 30min. The RS sols and TiO2 films were characterized by FT-IR, XRD, TEM, UV-Vis and SEM. The photocatalytic activities of the film samples were tested by the degradation of methyl orange solution with a concentration of 10mg/L under UV light irradiation. The results reveal that the RS sols are flavescent, alkalescent and contain needle-like anatase crystals. The TiO2 films are uniform, compact and transparent, their maximal light transmittance exceed 80% under visible light region. The degradation of methyl orange results illustrate that the RS-6 TiO2 thin films show the best photocatalytic activities, the decoloration rate of the methyl orange solution with RS-6 TiO2 thin films reachs 99% after irradiated 160min under UV light.

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Synthesis and Recycle of ZnO Particles for Degradation of Methyl Orange Aqueous Solution

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.121-126.587 ◽

2011 ◽

Vol 121-126 ◽

pp. 587-591 ◽

Cited By ~ 1

Author(s):

Li Qin Wang ◽

Xiang Ni Yang ◽

Xiu Li Zhao ◽

Yang Han ◽

Rui Jun Zhang ◽

...

Keyword(s):

Aqueous Solution ◽

Photocatalytic Activity ◽

Methyl Orange ◽

Lamellar Structure ◽

Degradation Rate ◽

Mesoporous Structure ◽

High Photocatalytic Activity ◽

Type Iv ◽

Zno Particles ◽

Adsorption Desorption

The ZnO particles with mesoporous and lamellar structure were synthesized in the method of precipitation, using zinc acetate as precursor. The ZnO particles were characterized by the means of scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and N2 adsorption–desorption measurements. The photoactivity of as-prepared ZnO particles was evaluated by degradation experiment of methyl orange aqueous solution. The results showed the obtained ZnO particles were irregular polygons with lamellar structure, and the particle size was in the range of 50 nm to 300 nm. According to XRD and N2 absorption results, ZnO particles were pure and integrated crystals with high crystallinity, and adsorption-desorption isotherms correspond to the typical type IV isotherm with a hysteresis loop of type H3, which showed ZnO particles had mesoporous structure with slit pore shape. The ZnO particles had high photocatalytic activity, the maximum degradation rate of methyl orange aqueous solution can reach 99%. When reused for the fifth time, the photocatalytic activity of ZnO particles was similar with the fresh ones, and recycled for the tenth time, the degradation rate of methyl orange aqueous solution still standed by 84.7%.

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The Application of Modified Nanometer Titanium Dioxide in Degradation of Methyl Orange Solution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.1401 ◽

2013 ◽

Vol 750-752 ◽

pp. 1401-1404

Author(s):

Xin Qian Shu ◽

Zhi Qiang Shan

Keyword(s):

Methyl Orange ◽

Doping Concentration ◽

Sol Gel ◽

Methyl Orange Solution ◽

Optimum Concentration ◽

Thin Membrane ◽

Glazed Ceramic ◽

Gel Processing ◽

Orange Solution ◽

Degradation Of Methyl Orange

The nanometer TiO2 thin membrane on different substrates doped with La3+ was prepared from Ti (OC4H9)4 and La (NO3)3 by Sol-Gel processing using dipping technique. The photocatalytic activity of membrane at different doping concentration in photocatalytic methyl orange was studied. The result showed that both the degraded rate and the optimum concentration depended on the change of doping concentration and substrates. When TiO2 thin membrane was doped with 0.5 La3+ on the substrates of glazed ceramic, aluminum and stainless steel, TiO2 membrane has the maximum degradation rate.

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