Visible Light Caffeic Acid Degradation by Carbon-Doped Titanium Dioxide

Venditti, Francesco; Cuomo, Francesca; Ceglie, Andrea; Avino, Pasquale; Russo, Mario Vincenzo; Lopez, Francesco

doi:10.1021/acs.langmuir.5b00560

Cited by 57 publications

(33 citation statements)

References 40 publications

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“…Doping of non-metal elements (e.g., C, N, S, etc.) on mesoporous TiO 2 can widen its valence band and narrow the bandgap so that the surface is more likely to generate highly active electrons and holes, which makes the photocatalysis more effective [ 53 , 54 , 55 , 56 , 57 , 58 ]. During the doping process, the non-metal anions will replace the lattice oxygen anions in TiO 2 and present as isolated atoms.…”

Section: Synthesismentioning

confidence: 99%

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Niu

Wang

et al. 2018

Materials

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Mesoporous materials are materials with high surface area and intrinsic porosity, and therefore have attracted great research interest due to these unique structures. Mesoporous titanium dioxide (TiO2) is one of the most widely studied mesoporous materials given its special characters and enormous applications. In this article, we highlight the significant work on mesoporous TiO2 including syntheses and applications, particularly in the field of photocatalysis, energy and biology. Different synthesis methods of mesoporous TiO2—including sol–gel, hydrothermal, solvothermal method, and other template methods—are covered and compared. The applications in photocatalysis, new energy batteries and in biological fields are demonstrated. New research directions and significant challenges of mesoporous TiO2 are also discussed.

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Section: Synthesismentioning

confidence: 99%

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Niu

Wang

et al. 2018

Materials

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“…As shown in Figure 8a, in the blank test (i.e., without addition of the photocatalysts), AR18 exhibited negligible self-decomposition, revealing great stability of the dye in the process. It is known that various processes can be involved in dye solution decolorization [55,56], therefore adsorption of AR18 on CS/GCN in darkness was also performed (Figure 8c). The results revealed that adsorption equilibrium for CS/GCN was achieved after 1 h. Moreover, the lowest adsorption capacity was demonstrated by the bulk GCN (~3%).…”

Section: Resultsmentioning

confidence: 99%

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

et al. 2019

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Spherical photocatalyst based on ordered mesoporous carbon and graphitic carbon nitride with core/shell structure (CS/GCN) was successfully synthesized via facile electrostatic self-assembly strategy. The photocatalytic properties of the hybrid were evaluated by the decomposition of Acid Red 18 under simulated solar light irradiation in comparison to the bulk graphitic carbon nitride (GCN). The results clearly revealed that coupling of carbon nitride with mesoporous carbon allows the catalyst to form with superior photocatalytic performance. The photoactivity of CS/GCN was over nine times higher than that of pristine GCN. Introducing mesoporous carbon into GCN induced higher surface area of the heterojunction and also facilitated the contact surface between the two phases. The synergistic effect between those two components enhanced the visible light-harvesting efficiency and improved photoinduced charge carrier generation, and consequently their proper separation. The electrochemical behavior of the obtained composite was also evaluated by electrochemical impedance, transient photocurrent response and linear sweep potentiometry measurements. The results confirmed that transport and separation of charge carriers in the hybrid was enhanced in comparison to the reference bulk graphitic carbon nitride. Detailed electrochemical, photoluminescence and radical scavenger tests enabled determination of the possible mechanism of photocatalytic process. This work presents new insights to design a core/shell hybrid through the simple preparation process, which can be successfully used as an efficient photocatalyst for the treatment of wastewater containing dyes under solar light irradiation.Catalysts 2019, 9, 1007 2 of 17 increase the surface area, the porosity in the structure of GCN can be additionally induced. Mesoporous photocatalysts received considerable research interest because they contain a special pore network, which facilitates the diffusion of the reactants and products. Moreover, the large surface area offers more active sites. Therefore, for an economical utilization of GCN, the researchers should strive to find the way for enhancing its photocatalytic properties [10,11].Up to now, different strategies, including introducing foreign elements, designing nanoporous structures, texturization, supramolecular assembly and creating effective heterojunctions, have been developed to enhance the photoactivity of GCN [12]. A large number of studies have confirmed that building a heterojunction system is an effective method to improve the separation efficiency of the photogenerated electrons and holes which dramatically improves the photocatalytic performance [13].To form an efficient heterojunction, GCN has been coupled with other semiconductors such as TiO , etc. [12,[14][15][16][17][18][19][20][21]. Unfortunately, the particles (often in the agglomerated form) were usually loaded randomly on the GCN sheets in composites causing low conjunction of GCN with a semiconductor which consequently limited charge transfer and...

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“…However, their high price inhibits the particle's applications. Researchers hope to find some non-noble metals to replace novel metals [56][57][58]. Zhang et al [59] reported the synthesis of Mo-decorated TiO 2 /CNTs (Mo-CT) composites.…”

Section: D/0dmentioning

confidence: 99%

Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts

Shen

et al. 2016

Catalysts

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Abstract:In this review, we provide an overview of recent progress in nanocarbons with different dimensions as noble-metal-free co-catalysts for photocatalysts. We put emphasis on the interface engineering between nanocarbon co-catalysts and various semiconductor photocatalysts and the novel properties generating of nanocarbon co-catalysts, also including the synthesis and application of nanocarbon-based photocatalyst composites.

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Visible Light Caffeic Acid Degradation by Carbon-Doped Titanium Dioxide

Cited by 57 publications

References 40 publications

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts

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