Step-by-Step Growth of HKUST-1 on Functionalized TiO2 Surface: An Efficient Material for CO2 Capture and Solar Photoreduction

Credico, Barbara Di; Redaelli, Matteo; Bellardita, Marianna; Calamante, Massimo; Cepek, Cinzia; Cobani, Elkid; D’Arienzo, Massimiliano; Evangelisti, Claudio; Marelli, Marcello; Moret, Massimo; Palmisano, Leonardo; Scotti, Roberto

doi:10.3390/catal8090353

Cited by 54 publications

(26 citation statements)

References 83 publications

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“…Thanks to its natural abundance and low cost, Sep has been extensively used as filler in various polymeric matrices [15,16] to enhance their thermal, mechanical and barrier properties. However, the pristine bundle-like form of the Sep fibers inhibits its uniform dispersion within the polymeric matrix and their chemical modification is usually required to ensure interfacial interaction with polymers [17,18].…”

Section: Introductionmentioning

confidence: 99%

A Green Approach for Preparing High-Loaded Sepiolite/Polymer Biocomposites

et al. 2018

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Global industry is showing a great interest in the field of sustainability owing to the increased attention for ecological safety and utilization of renewable materials. For the scientific community, the challenge lies in the identification of greener synthetic approaches for reducing the environmental impact. In this context, we propose the preparation of novel biocomposites consisting of natural rubber latex (NRL) and sepiolite (Sep) fibers through the latex compounding technique (LCT), an ecofriendly approach where the filler is directly mixed with a stable elastomer colloid. This strategy favors a homogeneous dispersion of hydrophilic Sep fibers in the rubber matrix, allowing the production of high-loaded sepiolite/natural rubber (Sep/NR) without the use of surfactants. The main physicochemical parameters which control Sep aggregation processes in the aqueous medium were comprehensively investigated and a flocculation mechanism was proposed. The uniform Sep distribution in the rubber matrix, characteristic of the proposed LCT, and the percolative filler network improved the mechanical performances of Sep/NR biocomposites in comparison to those of analogous materials prepared by conventional melt-mixing. These outcomes indicate the suitability of the adopted sustainable procedure for the production of high-loaded clay–rubber nanocomposites with remarkable mechanical features.

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Section: Introductionmentioning

confidence: 99%

A Green Approach for Preparing High-Loaded Sepiolite/Polymer Biocomposites

et al. 2018

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“…The XRD pattern in Figure 1 reveals that these samples were highly crystallized, suggesting a pure anatase phase. In compared with AG, no other diffraction appeared and the peaks did not shift in S-AG and TiO 2 aerogel templated by red cabbage anthocyanin, meaning that the addition of RCP would not change the anatase phase of TiO 2 aerogel [ 30 ]. The crystalline size was calculated by using the Scherrer equation.…”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Red Cabbage Anthocyanin Inserted TiO2 Aerogel Nanocomposites for Photocatalytic Reduction of Cr(VI) under Visible Light

Yang¹,

Jiang²,

Li³

et al. 2018

Nanomaterials

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In sharp contrast to conventional photosensitization methods in which the organic pigments were often adsorbed, herein we present a study on natural vegetable pigment inserted TiO2 aerogel nanocomposites and we directly use red cabbage anthocyanin (RCP) as a structure-directing agent. It was found that pure TiO2 aerogel nanocomposite did not exhibit any meaningful activity for photocatalytic reduction of Cr(VI). However, the photocatalytic reduction activity was greatly improved by the RCP inserted TiO2 aerogel nanocomposites under visible-light irradiation, which was approximately 2- and 12.3-fold higher than that of TiO2 aerogel conventionally photosensitized by RCP and pure TiO2 aerogel nanocomposites, respectively. It also exhibited good stability and could be reused at least three times without losing a significant amount of its activity.

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“…This, in turn, incites overall CO 2 photocatalytic performance of catalytic matrix. Hybrid MOF has been used for efficient CO 2 to CH 4 photoreduction obtained from structurally modified TiO 2 anatase with phosphoesanoic acid (PHA) functionalization (TiO 2 -PHA) and furnished by porous crystalline shell MOF (HKUST-1) onto growth via step-by-step self-assembly to yield rhombic elongated architecture TiO 2 /HKUST-1 equipped with porous 349 m 2 •g −1 surface-area-based N 2 isotherms [331]. The heterogeneous photocatalytic reduction reaction has been carried out using as-synthesized composite (0.3 g) and water electron donor under visible light irradiation.…”

Section: Organic Ligand Modificationmentioning

confidence: 99%

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

2019

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The accumulation of carbon dioxide (CO2) pollutants in the atmosphere begets global warming, forcing us to face tangible catastrophes worldwide. Environmental affability, affordability, and efficient CO2 metamorphotic capacity are critical factors for photocatalysts; metal-organic frameworks (MOFs) are one of the best candidates. MOFs, as hybrid organic ligand and inorganic nodal metal with tailorable morphological texture and adaptable electronic structure, are contemporary artificial photocatalysts. The semiconducting nature and porous topology of MOFs, respectively, assists with photogenerated multi-exciton injection and adsorption of substrate proximate to void cavities, thereby converting CO2. The vitality of the employment of MOFs in CO2 photolytic reaction has emerged from the fact that they are not only an inherently eco-friendly weapon for pollutant extermination, but also a potential tool for alleviating foreseeable fuel crises. The excellent synergistic interaction between the central metal and organic linker allows decisive implementation for the design, integration, and application of the catalytic bundle. In this review, we presented recent MOF headway focusing on reports of the last three years, exhaustively categorized based on central metal-type, and novel discussion, from material preparation to photocatalytic, simulated performance recordings of respective as-synthesized materials. The selective CO2 reduction capacities into syngas or formate of standalone or composite MOFs with definite photocatalytic reaction conditions was considered and compared.

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Step-by-Step Growth of HKUST-1 on Functionalized TiO2 Surface: An Efficient Material for CO2 Capture and Solar Photoreduction

Cited by 54 publications

References 83 publications

A Green Approach for Preparing High-Loaded Sepiolite/Polymer Biocomposites

A Green Approach for Preparing High-Loaded Sepiolite/Polymer Biocomposites

Highly Efficient Red Cabbage Anthocyanin Inserted TiO2 Aerogel Nanocomposites for Photocatalytic Reduction of Cr(VI) under Visible Light

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

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