Synthesis and characterization of TiO2/graphitic carbon nanocomposites with enhanced photocatalytic performance

Wanag, Agnieszka; Kusiak-Nejman, Ewelina; Kowalczyk, Łukasz; Kapica-Kozar, Joanna; Ohtani, Bunsho; Morawski, Antoni W.

doi:10.1016/j.apsusc.2017.07.298

Cited by 24 publications

(1 citation statement)

References 69 publications

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“…S BET area decreased after calcination from 142 m 2 /g for TiO 2 /rGO (starting material for calcination) to 21 m 2 /g for the sample heated at 900 • C. Furthermore, a correlation between increasing calcination temperature and decreasing surface area was observed. This was related to the sintering and agglomeration of TiO 2 particles during calcination [53,54]. As was previously observed, the modification with graphene led to the increase of the S BET area.…”

Section: Bet Analysissupporting

confidence: 66%

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

et al. 2021

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In this study, a series of TiO2/rGO photocatalysts were obtained with a two-step procedure: a solvothermal method and calcination at 300–900 °C in an argon atmosphere. It was noted that the presence of rGO in photocatalysts had an important role in the changes in crystallite size and specific surface area. In TiO2/rGO samples, different surface functional groups, such as C−Cgraph, C−Caliph, C−OH, C=O, and CO(O), were found. It was observed that rGO modification suppressed the anatase-to-rutile phase transformation. The photocatalytic activity of the obtained nanomaterials was investigated through the decomposition of methylene blue under UV and artificial solar light irradiation. It was found that the adsorption degree played an important role in methylene blue decomposition. The experimental results revealed that TiO2/rGO samples exhibited superior removal efficiency after calcination for methylene blue compared toTiO2 without rGO, as well as a commercial photocatalyst KRONOClean 7000. It was noted that photocatalytic activity increased with the increase in the calcination temperature. The highest activity was observed for the sample calcined at 700 °C, which consisted of 76% anatase and 24% rutile. This study clearly demonstrated that TiO2/rGO samples calcined in argon can be used as efficient photocatalysts for the application of methylene blue decomposition.

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Section: Bet Analysissupporting

confidence: 66%

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

et al. 2021

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Microemulsion Templating Synthesis of Hierarchical Porous Ag‐Doped SiO₂‐TiO₂ Composites for Efficient Degradation of Noxious Methylene Blue Dye: Effect of Calcination Environment

Onwubiko,

Matsushita,

Elshehy

et al. 2024

ChemistrySelect

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We report herein a dual function mesoporous structure of titanium oxide based porous carbon with large surface‐to‐volume ratios for efficient degradation of noxious methylene blue dye (MB) from an aqueous environment. The mesoporous photocatalysts is fabricated via direct template synthesis of highly ordered silica‐titania monolith doped with Ag0/Ag2O starting from a quaternary microemulsion liquid crystalline phase. The produced monoliths are subjected in‐situ to doping by growing silver, in the cubic cavities, and on the silica/titania structure's domain. This study investigated the efficiency of novel composite materials, consisting of silver‐doped silica‐titania (SiO2/TiO2), which is synthesized using the microemulsion templating approach. The photocatalytic performance of the synthesized composite in the photodegradation of MB has been studied. The procedure of photodegradation was employed to achieve decolorization of the cationic MB dye using visible light. The catalyst effectively achieved the decolorization of the dyed solution through the processes of adsorption and photodegradation. The composite consisting of SiO2, TiO2, and Ag2O at a ratio of 1 : 1:0.5, which underwent calcination in an air environment (AgOST), exhibited a removal efficiency of 99 % compared to its calcined state under argon (AgSTC).

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Enhanced photocatalytic performance of TiO2–carbon nanocomposite

Kuldeep

Bhosale

Garadkar

2020

J Mater Sci: Mater Electron

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Synthesis and characterization of TiO2/graphitic carbon nanocomposites with enhanced photocatalytic performance

Cited by 24 publications

References 69 publications

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

Microemulsion Templating Synthesis of Hierarchical Porous Ag‐Doped SiO₂‐TiO₂ Composites for Efficient Degradation of Noxious Methylene Blue Dye: Effect of Calcination Environment

Enhanced photocatalytic performance of TiO2–carbon nanocomposite

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Synthesis and characterization of TiO2/graphitic carbon nanocomposites with enhanced photocatalytic performance

Cited by 24 publications

References 69 publications

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts

Microemulsion Templating Synthesis of Hierarchical Porous Ag‐Doped SiO2‐TiO2 Composites for Efficient Degradation of Noxious Methylene Blue Dye: Effect of Calcination Environment

Enhanced photocatalytic performance of TiO2–carbon nanocomposite

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Microemulsion Templating Synthesis of Hierarchical Porous Ag‐Doped SiO₂‐TiO₂ Composites for Efficient Degradation of Noxious Methylene Blue Dye: Effect of Calcination Environment