Self-assembling porous 3D titanium dioxide-reduced graphene oxide aerogel for the tunable absorption of oleic acid and RhodamineB dye

Xiang, Cheng; Guo, Ronghui; Lan, Jianwu; Jiang, Shou-xiang Kinor; Wang, Can; Du, Zoufei; Cheng, Cheng

doi:10.1016/j.jallcom.2017.11.034

Cited by 41 publications

(16 citation statements)

References 41 publications

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“…Guo et al reported a TiO 2 -decorated RGO aerogel (TiO 2 -RGA) prepared by ethylenediamine reduction assisted hydrothermal method. 141 With the addition of appropriate amount of TiO 2 , the whole aerogel was transformed from hydrophobic to hydrophilic, which increased the contact area between aerogel and polluted water containing RhB and improved the adsorption effect of RhB. Similarly, Wan et al synthesized graphene-CNT aerogel (GCAs) by embedding CNTs into graphene network through ethylenediamine-assisted reduction hydrothermal method.…”

Section: Adsorption and Removal Of Pollutantsmentioning

confidence: 99%

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

et al. 2022

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Section: Adsorption and Removal Of Pollutantsmentioning

confidence: 99%

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

et al. 2022

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“…Due to the fragile network, it is beneficial to combine TiO 2 aerogel with another nanomaterial to have more stable nanostructure and excellent porosity (Cheng et al, 2016;Xiang et al, 2018;Luna et al, 2020;Liu et al, 2021). Zu et al have found that the composite aerogel obtained by combining SiO 2 and TiO 2 has good moldability and a superior photocatalytic effect (Zu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Monolithic TiO2 Aerogels With Relatively Low Shrinkage and Improved Formability Assisted by CTAB

et al. 2021

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Monolithic TiO2 aerogels without severe shrink were obtained by the sol-gel method with the addition of the surfactant cetyltrimethylammonium bromide (CTAB) to control the hydrolysis and polycondensation process and acetonitrile solvent as the solvent to improve the crystallinity. After CO2 supercritical drying, the shrinkage ratio of monolithic TiO2 aerogels modified by CTAB decreased by up to ∼26.9%, compared with the pure TiO2 aerogel. Their apparent densities were all lower than 300 g/cm3. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier Transform infrared spectroscopy (FTIR) and BET Specific Surface Area Analysis were used to analyze the as-synthesized samples. The results revealed that all the samples were anatase-TiO2 phase with nanoporous network structures. The specific surface areas reached 250.2 m2/g confirmed by the BET (Brunaur–Emmett–Teller method) analysis. However, TiO2 aerogels without the addition of CTAB showed evident agglomeration and collapse of the network in comparison with CTAB-added samples. To further study the structure-property relationship, the photocatalysis performance of as-synthesized and 300°C-calcined aerogels was carried out contrastively. Interestingly, the influences of the CTAB adding amount of as-synthesized and calcined TiO2 aerogels are negative and positive, respectively, which is probably due to the synergistic effect of CTAB hindrance and grain refinement. Potentially, This kind of TiO2 aerogels assisted by CATB with low density, small shrinkage, improved formability, high specific surface area and fine crystalline grain may be applied in various applications, such as electrochemistry, photocatalysis, etc.

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“…Due to all of these characteristics, such rGO based 3D structures with integrated TiO 2 nanoparticles photocatalysts have raised increasing attention of the scientific community, especially for application in water depollution from various organic pollutants. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] In most of these works, these composite photocatalysts were synthesized either by hydrothermal, [36-39,41À 44] modified hydrothermal, [45,46] solvothermal [40] methods or UV radiation. [35] These photocatalysts in general demand their production during prolonged (> 24 h) periods of time at elevated temperatures (at least 180°C), often followed by calcination up to 500°C.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Visible Light Photocatalysts Based on Manganese Doped TiO₂ Integrated Within Monolithic Reduced Graphene Oxide/Polymer Porous Monolith

et al. 2020

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3D monolithic integrated photocatlysts were prepared by selfassembly of graphene platelets decorated with manganese doped TiO 2 nanoparticles. The self-assembly was induced by chemical reduction at mild reaction conditions. The physicochemical properties of the photocatalysts were improved by addition of polymer nanoparticles within the 3D structures. The rGO presence in the nanostructures affected their light absorption capability, which was red shifted. As a result, the band gap dropped from 3.12 eV in Mn doped TiO 2 to 2.8 eV in the monolithic composite made of rGO and TiO 2 . The photocatalysts were applied for the elimination of methylene blue (MB) from aqueous solutions, the degradation of which was monitored by the Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry. It was shown that (i) MB was completely eliminated from aqueous solution; (ii) all the adsorbed MB was photocatalytically degraded under visible light, giving rise to various smaller molecules as intermediate products of degradation; and (iii) one part of the MB was completely mineralized, demonstrated by the presence of final degradation products. These results indicate that the presented materials seem to be a powerful tool in water purification process with double impact. On one hand, it will allow re-use of water and decrease of its consumption in the textile producing plants, and on the other hand, it will assure protection of the environment by elimination of the hazards.

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Self-assembling porous 3D titanium dioxide-reduced graphene oxide aerogel for the tunable absorption of oleic acid and RhodamineB dye

Cited by 41 publications

References 41 publications

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

Synthesis of Monolithic TiO2 Aerogels With Relatively Low Shrinkage and Improved Formability Assisted by CTAB

Visible Light Photocatalysts Based on Manganese Doped TiO₂ Integrated Within Monolithic Reduced Graphene Oxide/Polymer Porous Monolith

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Self-assembling porous 3D titanium dioxide-reduced graphene oxide aerogel for the tunable absorption of oleic acid and RhodamineB dye

Cited by 41 publications

References 41 publications

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

Two-dimensional material-based functional aerogels for treating hazards in the environment: synthesis, functional tailoring, applications, and sustainability analysis

Synthesis of Monolithic TiO2 Aerogels With Relatively Low Shrinkage and Improved Formability Assisted by CTAB

Visible Light Photocatalysts Based on Manganese Doped TiO2 Integrated Within Monolithic Reduced Graphene Oxide/Polymer Porous Monolith

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Product

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Visible Light Photocatalysts Based on Manganese Doped TiO₂ Integrated Within Monolithic Reduced Graphene Oxide/Polymer Porous Monolith