Development of hierarchically porous cobalt oxide for enhanced photo-oxidation of indoor pollutants

Cheng, J.P.; Shereef, Anas; Gray, Kimberly A.; Wu, Jinsong

doi:10.1007/s11051-015-2955-z

Cited by 8 publications

(5 citation statements)

References 40 publications

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“…Nanostructured Co 3 O 4 with high specific surface area and enhanced catalytic activity is particularly attractive. In the past decade, various nanostructures of cobalt oxides such as nanowires, 288 hollow spheres 289 and 3D macro/mesoporous structure 290,291 have been synthesized, and their enhanced catalytic performances have been demonstrated. Xu et al 288 Deng et al 290 have synthesized three-dimensional macro/ mesoporous tricobalt tetraoxide Co 3 O 4 via a facile self-sustained decomposition using the complexes of metallic salts and organics (metal-organic complexes).…”

Section: Single Metal Oxide-based Hierarchically Porous Structures As...mentioning

confidence: 99%

Applications of hierarchically structured porous materials from energy storage and conversion, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine

et al. 2016

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Over the last decade, significant effort has been devoted to the applications of hierarchically structured porous materials owing to their outstanding properties such as high surface area, excellent accessibility to active sites, and enhanced mass transport and diffusion. The hierarchy of porosity, structural, morphological and component levels in these materials is key for their high performance in all kinds of applications. The introduction of hierarchical porosity into materials has led to a significant improvement in the performance of materials. Herein, recent progress in the applications of hierarchically structured porous materials from energy conversion and storage, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine is reviewed. Their potential future applications are also highlighted. We particularly dwell on the relationship between hierarchically porous structures and properties, with examples of each type of hierarchically structured porous material according to its chemical composition and physical characteristics. The present review aims to open up a new avenue to guide the readers to quickly obtain in-depth knowledge of applications of hierarchically porous materials and to have a good idea about selecting and designing suitable hierarchically porous materials for a specific application. In addition to focusing on the applications of hierarchically porous materials, this comprehensive review could stimulate researchers to synthesize new advanced hierarchically porous solids.

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Section: Single Metal Oxide-based Hierarchically Porous Structures As...mentioning

confidence: 99%

Applications of hierarchically structured porous materials from energy storage and conversion, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine

et al. 2016

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“…As shown in Figure 5F, the adsorption and desorption curves of PP‐0% fiber membrane and PP‐1.5% fiber membrane did not completely overlap and were accompanied by the appearance of hysteresis loops, which belonged to the type IV adsorption isotherm, indicating that the fiber membranes contain both microporous and mesoporous structures. From the nitrogen adsorption analysis, it was shown that PP‐1.5% fiber membrane had a larger specific surface area than PP‐0% fiber membrane, indicating that the incorporation of Sap@P(St‐co‐MMA) significantly increased the porosity and specific surface area of the fiber membrane 42 . The specific surface area of PP‐1.5% fiber membrane was 129.11 m 2 g −1 and that of PP‐0% fiber membrane was 80.63 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…From the nitrogen adsorption analysis, it was shown that PP-1.5% fiber membrane had a larger specific surface area than PP-0% fiber membrane, indicating that the incorporation of Sap@P(St-co-MMA) significantly increased the porosity and specific surface area of the fiber membrane. 42 The specific surface area of PP-1.5% fiber membrane was 129.11 m 2 g À1 and that of PP-0% fiber membrane was 80.63 m 2 g À1 . As shown in Figure 5G, PP-1.5% fiber membrane had more mesoporous structure as well as larger specific surface area compared with PP-0% fiber membrane, which could provide more active sites and thus adsorb and accommodate more oil substances.…”

Section: Contact Angle Capillary Rheological Thermal Stability and Be...mentioning

confidence: 92%

Preparation and adsorption behavior investigation of polypropylene/organically modified saponite nanocomposites fiber membrane with strong oil‐adsorption

Luo,

Li,

Zhen

et al. 2024

Polymer Engineering & Sci

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To improve the adsorption and reusability of polypropylene (PP) fiber membranes, the organically modified saponite (Sap@P(St‐co‐MMA)) was prepared by solution polymerization. Furthermore, PP‐based nanocomposite fiber membranes with strong oil adsorption, thermal stability, and reusability were prepared via melt‐blown technology. The increased specific surface area of PP‐based nanocomposite fiber membranes (PP‐1.5%) provided more active sites for the oil adsorption. Simultaneous rheology and Fourier transform infrared measurements tests showed that Sap@P(St‐co‐MMA) enhanced the crystallinity of PP matrix, promoted the regular arrangement of molecules, and improved the intermolecular interaction force, which was beneficial for the oil adsorption. The adsorption of PP‐1.5% (1.5 wt% addition of Sap@P(St‐co‐MMA)) fiber membrane for xylene and kerosene reached a maximum of 15.84 and 22.84 g g−1, respectively. In the treatment of coal tar wastewater, the removal rate of oil can reach 62.9%, and the removal rate can still reach 51.17% after five cycles of experiments. In summary, PP‐1.5% fiber membrane does not produce secondary pollution to the environment, and is a kind of oil removal material with good application prospect.Highlights PP‐based nanocomposites fiber membrane with strong oil adsorption was prepared. Organically modified saponite had strong heterogenous nucleation for PP matrix. Sap@P(St‐co‐MMA) increased the specific surface area of PP‐based fiber membrane.

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“…13a, the adsorption and desorption curves of PP-0% fiber membrane and PP-1.5% fiber membrane did not completely overlap and were accompanied by the appearance of hysteresis loops, which belonged to the type IV adsorption isotherm, indicating that the fiber membranes contain both microporous and mesoporous structures. From the nitrogen adsorption analysis, it was shown that PP-1.5% fiber membrane had a larger specific surface area than PP-0% fiber membrane, indicating that the incorporation of Sap@P(St-co-MMA) significantly increased the porosity and specific surface area of the fiber membrane [40]. The specific surface area of PP-1.5% fiber membrane was 129.11 m 2 g -1 and that of PP-0% fiber membrane was 80.63 m 2 g -1 .…”

Section: Bet Analysismentioning

confidence: 99%

Preparation, adsorption behavior and performance of poly (propylene)/organically modified saponite nanocomposites fiber membranes

Luo,

Li,

Weijun

et al. 2023

Preprint

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Organically modified saponite (Sap@P(St-co-MMA)) additives were prepared by solution polymerization with saponite as matrix and with styrene and methyl methacrylate as monomer, poly (propylene) (PP)/Sap@P(St-co-MMA) nanocomposites fiber membranes are prepared by melt-blown spinning. PP fiber membranes with improved hydrophobicity, thermal stability, crystallinity, and adsorption properties were prepared. The specific surface area of PP fiber membranes (PP-1.5%) with the addition of 1.5% additive is 129.11 m2 g− 1, which provided more active sites for the adsorption of oil substances from wastewater. Simultaneous rheological measurement and FTIR analysis showed that Sap@P(St-co-MMA) could improve the crystallinity of PP matrix, so that PP molecules were regularly arranged to improve the intermolecular interaction force, which was favorable for the adsorption of oil substances. The adsorption of PP-1.5% fiber membrane conformed to a pseudo-second order kinetic model, which could be expressed by the Langmuir isothermal model, and the oil removal of 51% was still achieved after 5 cycles of recycling with a maximum removal of 65%. Accordingly, PP-1.5% fiber membrane can efficiently remove the oil substances in wastewater without secondary pollution to the environment, and it is a kind of oil removal material with good application prospect.

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Development of hierarchically porous cobalt oxide for enhanced photo-oxidation of indoor pollutants

Cited by 8 publications

References 40 publications

Applications of hierarchically structured porous materials from energy storage and conversion, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine

Applications of hierarchically structured porous materials from energy storage and conversion, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine

Preparation and adsorption behavior investigation of polypropylene/organically modified saponite nanocomposites fiber membrane with strong oil‐adsorption

Preparation, adsorption behavior and performance of poly (propylene)/organically modified saponite nanocomposites fiber membranes

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