Mesoporous silica “plated” copper hydroxides/oxides heterostructures as superior regenerable sorbents for low temperature H2S removal

Basina, Georgia; Gaber, Dina; Yafei, Shaima Al; Tzitzios, Vasileios; Gaber, Safa; Ismail, Issam; Vaithilingam, Balasubramanian V.; Polychronopoulou, Kyriaki; Hashimi, Saleh Al; Wahedi, Yasser Al

doi:10.1016/j.cej.2020.125585

Cited by 21 publications

(10 citation statements)

References 90 publications

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“…They used Cu(OH) 2 as the precursor for the synthesis of CuO NP, by subsequent calcination. MS has been used as the support due to its high loading capacity [168] . In another study nano zero valent iron (nZVI) doped mesoporous silica microspheres covered with FeOOH (SiO 2 @FeOOH@Fe) were used for decontamination of Polybrominated diphenyl ethers which is major class of soil pollutants in e‐waste sites.…”

Section: Contemporary Multidisciplinary Applications Of Mesoporous Si...mentioning

confidence: 99%

“…MS has been used as the support due to its high loading capacity. [168] In another study nano zero valent iron (nZVI) doped mesoporous silica microspheres covered with FeOOH (SiO 2 @FeOOH@Fe) were used for decontamination of Polybrominated diphenyl ethers which is major class of soil pollutants in e-waste sites. The hybrid showed a 78 % removal of decabromodiphenyl ether 120 h using a dosage of 0.165 g /g and a pH of 5.42.…”

Section: Environmental Remediationmentioning

confidence: 99%

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Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

2022

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Number of nanomaterials have been produced as a result of the growth of nanoscience and nanotechnology, and have found applications in interdisciplinary sectors in which nanotechnology has now become indispensable. Owing to the better properties over individual nanomaterials, the hybrid materials have been broadly studied. Mesoporous silica nanoparticles (MS Nps) have been employed as a matrix in the synthesis of nanohybrids and as a filler in nanocomposites due to its high porosity, adjustable pore volume, facile functionalization, thermal and chemical stability and less toxicity. So far, versatile MS Nps hybrids and composites have been synthesized as advanced smart materials to be applied across industrial and biological sectors. This review study gives an up‐to‐date viewpoint on the synthesis and uses of mesoporous silica nanohybrids and nanocomposites particularly in biomedical sectors, agricultural and food industries and in environmental remediation followed by future insights and research directions of MS Np hybrids and composites.

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Section: Contemporary Multidisciplinary Applications Of Mesoporous Si...mentioning

confidence: 99%

Section: Environmental Remediationmentioning

confidence: 99%

Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

2022

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“…An alternative route is biological desulfurization, also known as biodesulfurization; it is a more environmentally friendly option that reduces production costs and currently is generating considerable interest from the industry. 6 − 9 …”

Section: Introductionmentioning

confidence: 99%

Enhanced Biodesulfurization with a Microbubble Strategy in an Airlift Bioreactor with Haloalkaliphilic Bacterium Thioalkalivibrio versutus D306

Peh

Zhong

et al. 2022

ACS Omega

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Biodesulfurization under haloalkaline conditions requires limiting oxygen and additional energy in the system to deliver high mixing quality control. This study considers biodesulfurization in an airlift bioreactor with uniform microbubbles generated by a fluidic oscillation aeration system to enhance the biological desulfurization process and its hydrodynamics. Fluidic oscillation aeration in an airlift bioreactor requires minimal energy input for microbubble generation. This aeration system produced 81.87% smaller average microbubble size than the direct aeration system in a bubble column bioreactor. The biodesulfurization phase achieved a yield of 94.94% biological sulfur, 84.91% biological sulfur selectivity, and 5.06% sulfur oxidation performance in the airlift bioreactor with the microbubble strategy. The biodesulfurization conditions of thiosulfate via Thioalkalivibrio versutus D306 are revealed in this study. The biodesulfurization conditions in the airlift bioreactor with the fluidic oscillation aeration system resulted in the complete conversion of thiosulfate with 27.64% less sulfate production and 10.34% more biological sulfur production than in the bubble column bioreactor. Therefore, pleasant hydrodynamics via an airlift bioreactor mechanism with microbubbles is favored for biodesulfurization under haloalkaline conditions.

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“…Absorbents with a high surface area are required to remove low concentrations of sulfur compounds effectively. Hence, mesoporous materials with high surface areas have been evaluated as support materials [12][13][14][15][16][17][18][19][20][21]. Although Cu-based sorbents with a support improve the surface area and show good desulfurization performance, they generally have high gas diffusion resistance reducing the desulfurization capacity.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Desulfurization Capacity with Cu-Based Macro-Porous Sorbents for Hydrogen Production by Gasification of Petroleum Cokes

et al. 2021

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Macro-porous alumina was used as a support for a pellet-type Cu-based desulfurization sorbent in the gas purification process for producing blue hydrogen by the gasification of petroleum coke. The effects of the macro-porous alumina on the pellet-type sorbents in reducing the gas diffusion resistance into the pores were investigated. The results showed that the macro-porous alumina enhances the diffusion resistance, resulting in an improved sulfur capacity of CuO absorbents. Such effects were more significant on the pellet type CuO absorbents than the powder type. In addition, CO production was observed experimentally during the desulfurization reaction of carbonyl sulfide (COS) at low temperatures (~473 K). Density functional theory calculations were also performed to understand the kinetics of desulfurization and CO production. The simulation results predicted that the kinetics of desulfurization is strongly affected by the local surface environment. The CO generated from C–O bond breaking from COS had a lower adsorption energy than the CO2 formation. These results suggest that the Cu-based desulfurization sorbent has potential catalytic activity for producing CO from COS dissociation.

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Mesoporous silica “plated” copper hydroxides/oxides heterostructures as superior regenerable sorbents for low temperature H2S removal

Cited by 21 publications

References 90 publications

Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

Contemporary, Multidisciplinary Roles of Mesoporous Silica Nanohybrids/Nanocomposites

Enhanced Biodesulfurization with a Microbubble Strategy in an Airlift Bioreactor with Haloalkaliphilic Bacterium Thioalkalivibrio versutus D306

Enhancement of Desulfurization Capacity with Cu-Based Macro-Porous Sorbents for Hydrogen Production by Gasification of Petroleum Cokes

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