Effect of carbon-interaction on structure-photoactivity of Cu doped amorphous TiO2 catalysts for visible-light-oriented oxidative desulphurization of dibenzothiophene

Hitam, C.N.C.; Jalil, Aishah Abdul; Triwahyono, Sugeng; Rahman, A.F.A.; Hassan, N.S.; Khusnun, N.F.; Jamian, Siti Fatimah; Mamat, Che Rozid; Nabgan, Walid; Ahmad, Arshad

doi:10.1016/j.fuel.2017.12.035

Cited by 51 publications

(16 citation statements)

References 60 publications

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“…Inspired by this, Hitam et al. prepared CuO/TiO 2 −C photocatalysts where C indicates that C defects were introduced into TiO 2 [78] . The coupling of CuO and introduction of C defects into TiO 2 narrow the bandgap of the photocatalyst, enhancing the visible light absorption from 420 to 450 nm.…”

Section: Solutions To Podsmentioning

confidence: 99%

“…Inspired by this, Hitam et al prepared CuO/TiO 2 À C photocatalysts where C indicates that C defects were introduced into TiO 2 . [78] The coupling of CuO and introduction of C defects into TiO 2 narrow the bandgap of the photocatalyst, enhancing the visible light absorption from 420 to 450 nm. The formation of a large number of TiÀ OÀ C and OÀ TiÀ C bonds, high specific surface area, and large pore size not only increase the number of active centers of the photocatalyst but also provide a good surface contact, which is beneficial to the improvement of DBT oxidation desulfurization.…”

Section: Hybrid Couplingmentioning

confidence: 99%

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Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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Section: Solutions To Podsmentioning

confidence: 99%

Section: Hybrid Couplingmentioning

confidence: 99%

Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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“…The combination of important organic reactions and these nanomaterial catalysts has resulted in various key benefits, more active sites due to high surface area, stability due to shape, size and enhanced catalytic performance due to nano‐size effect . In the last few decades, several industries have started using nanostructured carbon as a support material for catalytic applications, such as oxidation, oxidative aminations, hydrogenation, hydrogen transfer, C−H activations, desulphurization Mannich reactions and as fuel cells …”

Section: Introductionmentioning

confidence: 99%

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

2019

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Carbon-based-materials, owing to their wide availability and low cost, have been utilized for a variety of applications including heterogeneous catalysis. Various carbonaceous materials have been used as supports for transition metals or other materials. These support materials have shown their potential for development of green and sustainable approaches to heterogeneous catalysis. In this review, we discuss the utilization of carbon-based materials as supports for heterogeneous catalysts, especially in organic transformations. We have focused our discussions predominantly on four categories of carbonaceous supports, namely graphene (including, graphene oxide (GO) and reduced graphene oxide (RGO)), graphitic carbon nitride (GCN), carbon nanotubes (CNT) and activated carbon (AC) for various organic transformation reactions. Several approaches for the synthesis of these materials along with their application as heterogeneous catalysts for organic transformation reactions have been elaborated in detail. In addition, different aspects of organic synthesis, including hydrogenation, oxidation, reduction, condensation, and multi-component reactions, catalyzed by these materials have been discussed. Furthermore, organic transformations leading to the sustainable synthesis of valuable products from biomass have also been discussed. Finally, after a brief summary, the future perspectives of this very interesting class of materials are provided. Figure 1. Different types of carbon-support-based materials used as heterogeneous catalysts for organic transformations.

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“…Unfortunately, HDS is costly since it requires industrial units operating at high temperatures (>300 °C), pressure (3-10 MPa), and volume of hydrogen gas, with expensive catalysts and low energy efficiency (Kaisy, et al, 2016;Jiang et al, 2016;Zaid et al, 2017). Many of these limitations could be solved by developing desulfurization methods involving adsorption (Shah et al, 2016;Mirshra et al, 2017), oxidative desulphurization (Rezvani et al, 2017;Hitam et al, 2018), bio-desulfurization (Martínez et al, 2017;Paixão et al, 2016), microwave assisted desulphurization, ultrasound (Taheri-Shakib et al, 2017;Mozafari and Nasri, 2017), and extractive desulphurization (Safa et al, 2016;Elwan et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Morpholine-Based Ionic Liquids for Extractive Desulfurization of Diesel Fuel

Fonseca

Silva

Sinfrônio

et al. 2019

Braz. J. Chem. Eng.

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Extractive desulfurization with ionic liquids has attracted significant attention from a growing number of scientists due to the current environmental restrictions on fuel. Protic ionic liquids (PILs) were synthesized via equimolar neutralization of morpholine and formic-based compounds. The obtained PILs were characterized by Fourier transform infrared and 1 H NMR spectroscopy and used as a promoter for the room temperature deep desulfurization of model oil and commercial B0S500 diesel. Extractive desulfurization of the model oil in n-octane showed that the alkyl chain length of the ionic liquid [Nmorph] + [HCOO]does not enhance the efficiency of dibenzothiophene (DBT) removal. Regardless, the [Morph] + [HCOO]-IL is the most promising candidate for extractive desulfurization. The best results were obtained using multistage extraction (n = 3) and a 1:1 volume ratio, resulting in a 99.44% removal rate of sulfur compounds. For commercial B0S500 diesel, extraction time significantly influenced the removal of sulfur species. For samples with multistage extraction and a 1:1 volume ratio, [Morph] + [HCOO]removed approximately 47.48% of the sulfur-containing compounds. The recycling study of [Morph] + [HCOO]suggests that the IL remains active for up to three operating cycles without losing efficiency.

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Effect of carbon-interaction on structure-photoactivity of Cu doped amorphous TiO2 catalysts for visible-light-oriented oxidative desulphurization of dibenzothiophene

Cited by 51 publications

References 60 publications

Desulfurization through Photocatalytic Oxidation: A Critical Review

Desulfurization through Photocatalytic Oxidation: A Critical Review

Carbon‐Support‐Based Heterogeneous Nanocatalysts: Synthesis and Applications in Organic Reactions

Synthesis of Morpholine-Based Ionic Liquids for Extractive Desulfurization of Diesel Fuel

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