Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Kim, Sung Phil; Choi, Myong Yong; Choi, Hyun Chul

doi:10.1016/j.apsusc.2015.09.044

Cited by 80 publications

(20 citation statements)

References 47 publications

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“…To solve these problems, numerous attempts such as synthesizing various structures, doping with elements, coupling with other semiconductors, and supporting with other materials have been developed [7][8][9]. Among these methods, coupling with carbon materials such as CNT, C 3 N 4 and graphene is regarded as a promising method [10][11][12][13][14]. Especially, due to its excellent transparency, superior electron mobility and high chemical stability, graphene has been widely used to synthesize graphene-based hybrid photocatalytic materials such as graphene-TiO 2 , graphene-ZnO, and graphene-CdS for water purification and energy conversion [15].…”

Section: Introductionmentioning

confidence: 99%

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Shen

Zhao

Duan

et al. 2017

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Shen

Zhao

Duan

et al. 2017

Applied Surface Science

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“…The demand for solutions against several environmental issues has recently increased; in particular, the presence of air pollutants and organic dyes in water are global concerns. Since the latters are often highly toxic and have mutagenic properties, their removal is a major problem in the industry [1,2,3]. Until now, many efforts have been made to decompose the organic pollutants by using various processes involving, e.g., (homogeneous and/or heterogeneous) catalysts, adsorbents, and ozone [4,5,6,7,8] and photocatalysis is one of the most effective and economical paths for their removal [9,10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of SnO2 Aerogel/Reduced Graphene Oxide Nanocomposites via in Situ Annealing for the Photocatalytic Degradation of Methyl Orange

et al. 2019

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SnO2 aerogel/reduced graphene oxide (rGO) nanocomposites were synthesized using the sol–gel method. A homogeneous dispersion of graphene oxide (GO) flakes in a tin precursor solution was captured in a three-dimensional network SnO2 aerogel matrix and successively underwent supercritical alcohol drying followed by the in situ thermal reduction of GO, resulting in SnO2 aerogel/rGO nanocomposites. The chemical interaction between aerogel matrix and GO functional groups was confirmed by a peak shift in the Fourier transform infrared spectra and a change in the optical bandgap of the diffuse reflectance spectra. The role of rGO in 3D aerogel structure was studied in terms of photocatalytic activity with detailed mechanism of the enhancement such as electron transfer between the GO and SnO2. In addition, the photocatalytic activity of these nanocomposites in the methyl orange degradation varied depending on the amount of rGO loading in the SnO2 aerogel matrix; an appropriate amount of rGO was required for the highest enhancement in the photocatalytic activity of the SnO2 aerogel. The proposed nanocomposites could be a useful solution against water pollutants.

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“…Among various contaminants of water, dyes in many views are considered as the most dangerous contaminants (1). Synthetic dyes are widely used in various industries such as textile, leather, food, hygienic-cosmetics, printing, paper, plastic, and pigment production (2,3). In textile factories, for example, large volumes of water are used through dying phases.…”

Section: Introductionmentioning

confidence: 99%

Removal of Acid Orange 7 dye from aqueous solutions using polyaniline-modified rice bran: isotherms, kinetics, and thermodynamics

Bagheri¹,

Mardani²

2019

Environ Health Eng Manag

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Background: Today, due to increasing usage of dyes in various industrials and their destructive effects on health and environment, it is necessary to remove them from industrial wastes. Although there are few studies on the use of rice bran modified with polyaniline (RB/PANI) for removal of different dyes, but the effect of this adsorbent on the removal of Acid Orange 7 (AO7) dye has not been evaluated yet. Therefore, this study was conducted to investigate the removal of AO7 dye by RB/PANI as an adsorbent. Methods: The adsorbent characteristics were determined using scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. Also, the adsorbent surface area was measured by Brunauer–Emmett–Teller (BET) technique. The method of one-factor-at-a-time was used to optimize various factors including pH, temperature, and adsorbent dosage. Results: The optimal values for the factors affecting AO7 dye removal were calculated. It was revealed that the maximum dye removal was obtained at pH = 3, temperature = 25˚C, dye concentration = 30 mg/L, adsorbent dosage = 30 mg/L, and contact time= 60 minutes. The maximum removal percentage for RB/PANI was 97.13%. It was also revealed that Langmuir isotherm is the best fitted isotherm model. Conclusion: According to the results, the polyaniline-modified rice bran could be used as an excellent adsorbent for the removal of AO7 from aqueous solutions. The maximum dye removal efficiency for AO7 was obtained at pH = 3. Also, it was revealed that AO7 dye removal follows the pseudo-secondorder kinetic model and it is a spontaneous process.

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Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Cited by 80 publications

References 47 publications

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Facile Synthesis of SnO2 Aerogel/Reduced Graphene Oxide Nanocomposites via in Situ Annealing for the Photocatalytic Degradation of Methyl Orange

Removal of Acid Orange 7 dye from aqueous solutions using polyaniline-modified rice bran: isotherms, kinetics, and thermodynamics

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