Novel synthesis of cyano-functionalized mesoporous silica nanospheres (MSN) from coal fly ash for removal of toxic metals from wastewater

Wang, Bangda; Zhou, Yuexi; Li, Lei; Xu, Hao; Sun, Yinglong; Wang, Yi

doi:10.1016/j.jhazmat.2017.10.063

Cited by 59 publications

(26 citation statements)

References 33 publications

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“…Over the past decade, mesoporous materials have attracted significanti nterest in materials research due to their high sur-face area,l arge pore volume, and tunable pore size. To date, mesoporousm aterials have been developed by using various synthetic methods, including soft-templating, [1][2][3] hard-templating, [4][5][6] free-templating, [7,8] nano-casting, [9,10] and electrochemi- International Center for Materials Nanoarchitectonics( WPI-MANA) and International Center for Young Scientists (ICYS) NationalInstitute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki305-0044 (Japan) E-mail:KANETI.Valentino@nims.go.jp cal methods [11,12] with various degree of control over the shape, porosity,a nd surfacea rea.D ue to their unique physicochemicalp roperties, mesoporous materials have been employed for aw ide variety of applications, including environmental (e.g.,p hotocatalysis, [13,14] adsorption or separation of heavy metals, [15,16] and carbon monoxide oxidation [17,18] ), chemical (e.g.,h ydrogen evolution reaction (HER), [19] oxygen reduction reaction( ORR), [20] and oxygen evolution reaction (OER) [21] ) as well as biomedical applications( e.g.,m agnetic resonance imaging (MRI), [22] ultrasound imaging, and photothermal therapy [23] and immunosensor [24] ). Mesoporouso xides with nanometric dimensions have shown potential in energy storage, [25,26] catalysis, [27,28] sensing, [29,30] and adsorption.…”

Section: Introductionmentioning

confidence: 99%

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Saptiama

Kaneti

Yuliarto

et al. 2019

Chemistry A European J

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The effective utilization of various biomolecules for creating a series of mesoporous boehmite (γ‐AlOOH) and gamma‐alumina (γ‐Al2O3) nanosheets with unique hierarchical multilayered structures is demonstrated. The nature and concentration of the biomolecules strongly influence the degree of the crystallinity, the morphology, and the textural properties of the resulting γ‐AlOOH and γ‐Al2O3 nanosheets, allowing for easy tuning. The hierarchical γ‐AlOOH and γ‐Al2O3 multilayered nanosheets synthesized by using biomolecules exhibit enhanced crystallinity, improved particle separation, and well‐defined multilayered structures compared to those obtained without biomolecules. More impressively, these γ‐AlOOH and γ‐Al2O3 nanosheets possess high surface areas up to 425 and 371 m2 g−1, respectively, due to their mesoporous nature and hierarchical multilayered structure. When employed for molybdenum adsorption toward medical radioisotope production, the hierarchical γ‐Al2O3 multilayered nanosheets exhibit Mo adsorption capacities of 33.1–40.8 mg g−1. The Mo adsorption performance of these materials is influenced by the synergistic combination of the crystallinity, the surface area, and the pore volume. It is expected that the proposed biomolecule‐assisted strategy may be expanded for the creation of other 3D mesoporous oxides in the future.

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Section: Introductionmentioning

confidence: 99%

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Saptiama

Kaneti

Yuliarto

et al. 2019

Chemistry A European J

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“…As a support material for the catalyst, the carrier often determines the stability and recyclability of the catalyst, while its adsorption and surface properties exert a considerable influence on catalytic activity (Zugic et al, 2017). Commonly used solid catalyst carrier materials include activated carbon (Huang, Cui, Zhang, Li, & Pan, 2015), γ-Al 2 O 3 (Ernst, Lurot, & Schrotter, 2004), zeolite (Wang et al, 2018), new materials (e.g., carbon nanotubes; Nguyen et al, 2018), and eggshell membrane powder (Asgari, Faradmal, Nasab, & Ehsani, 2019). Al 2 O 3 has a large specific surface area, numerous surface active sites, good thermal stability, and high mechanical properties.…”

Section: Research Articlementioning

confidence: 99%

Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry

Sun

Zhou

Sun

et al. 2020

Water Environment Research

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A Ti‐Co@γ‐Al2O3 composite catalyst was prepared using impregnation and sol‐gel methods to degrade biochemical tailwater from the coal chemical industry, and its preparation conditions (active component doping ratio, load times, and calcination temperature) were optimized through single‐factor experiments. The surface properties of the Ti‐Co@γ‐Al2O3 composite catalyst and the crystal structure characteristics of the catalytically active components were characterized via scanning electron microscopy–energy dispersive spectrometry, X‐ray diffraction, and X‐ray fluorescence. The effects of reaction time, initial pH, ozone aeration, and catalyst dosage on degradation performance were investigated through an experiment on the catalytic ozonation degradation of biochemical tail water. Results showed that the optimal conditions were as follows: reaction time of 30 min, pH of 8.2, ozone aeration of 30 mg/min, and catalyst dosage of 20 g/L. The total phenol and total organic carbon removal rates for biochemical tailwater were 66.1% and 57.6%, respectively, in the catalytic system. The mechanism of degradation of organic pollutants by catalytic ozonation was investigated by adding tert‐butanol to the catalytic ozone oxidation system. The degradation of chemical oxygen demand in biochemical tailwater was caused primarily by the synergy between the Ti‐Co@γ‐Al2O3 catalyst and ozone. Practitioner points Ti‐Co/γ‐Al2O3 catalyst was prepared for the catalytic oxidation of biochemical tail water. The optimal removal rates of total phenol and TOC were 67.7% and 58.8%, respectively. The organic matter was degraded rapidly and efficiently after 5 min of ozone catalytic oxidation reaction. It provides theoretical guidance for the practical application of ozone catalytic oxidation.

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“…There is a significant improvement in the adsorption capacity of gasification coal fly ash by synthesis of zeolite. The adsorption capacity of the synthesized zeolite from combustion coal fly ash for Ni 2+ is varied in a wide range, from 8.69 mg/g to 59.89 mg/g [22,23,36]. This may be due to the differences in the mineralogical properties between the coal fly ash from gasification and combustion and the methods for synthesis.…”

Section: Adsorption Isotherm and Kineticsmentioning

confidence: 99%

“…Due to the increasing demand and the great potential of coal gasification, it is meaningful to study the disposal and reuse of coal fly ash produced by the gasification process. The synthesis of zeolite to be used as a low-cost adsorbent is a feasible way for coal fly ash utilization, and the synthesis of zeolite from coal fly ash produced by combustion is widely reported [6,7,22,23]. There is, however, lack of information about the properties of zeolite synthesized from coal fly ash produced by gasification.…”

Section: Introductionmentioning

confidence: 99%

Zeolite Synthesized from Coal Fly Ash Produced by a Gasification Process for Ni2+ Removal from Water

et al. 2018

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There are increasing demands and great potential of coal gasification in China, but there is a lack of studies focused on the disposal and utilization of coal fly ash produced by the gasification process. In this study, a coal fly ash sample derived from a gasifier in Jincheng, China, was utilized as raw material for the synthesis of zeolite by alkali fusion followed by hydrothermal treatments. The effects of operation conditions on the cation exchange capacity (CEC) of synthesized zeolite were investigated. The synthesized zeolite with the highest CEC (270.4 meq/100 g), with abundant zeolite X and small amount of zeolite A, was produced by 1.5 h alkali fusion under 550 • C with NaOH/coal fly ash ratio 1.2 g/g followed by 15 h hydrothermal treatment under 90 • C with liquid/solid ratio 5 mL/g and applied in Ni 2+ removal from water. The removal rate and the adsorption capacity of Ni 2+ from water by the synthesized zeolite were determined at the different pH, contact time, adsorbent dose and initial Ni 2+ concentration. The experimental data of adsorption were interpreted in terms of Freundlich and Langmuir equations. The adsorption of Ni 2+ by the synthesized zeolite was found to fit sufficient using the Langmuir isotherm. More than 90% of Ni 2+ in water could be removed by synthesized zeolite under the proper conditions. We show that the coal fly ash produced by the gasification process has great potential to be used as an alternative and cheap source in the production of adsorbents.

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Novel synthesis of cyano-functionalized mesoporous silica nanospheres (MSN) from coal fly ash for removal of toxic metals from wastewater

Cited by 59 publications

References 33 publications

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry

Zeolite Synthesized from Coal Fly Ash Produced by a Gasification Process for Ni2+ Removal from Water

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Novel synthesis of cyano-functionalized mesoporous silica nanospheres (MSN) from coal fly ash for removal of toxic metals from wastewater

Cited by 59 publications

References 33 publications

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Biomolecule‐Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Ozone catalytic oxidation capacity of Ti‐Co@Al2O3 for the treatment of biochemical tailwater from the coal chemical industry

Zeolite Synthesized from Coal Fly Ash Produced by a Gasification Process for Ni2+ Removal from Water

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Ozone catalytic oxidation capacity of Ti‐Co@Al₂O₃ for the treatment of biochemical tailwater from the coal chemical industry