Understanding the role of Zn
We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution,...
Ausführliche Beschreibung
Autor*in: |
Okrut, Alexander [verfasserIn] Grosso-Giordano, Nicolás A. [verfasserIn] Schöttle, Christian [verfasserIn] Zones, Stacey [verfasserIn] Katz, Alexander [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2019 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Microporous and mesoporous materials - Amsterdam [u.a.] : Elsevier, 1998, 283, Seite 55-63 |
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Übergeordnetes Werk: |
volume:283 ; pages:55-63 |
DOI / URN: |
10.1016/j.micromeso.2019.03.048 |
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Katalog-ID: |
ELV002115298 |
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245 | 1 | 0 | |a Understanding the role of Zn |
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520 | |a We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. | ||
650 | 4 | |a Magadiite | |
650 | 4 | |a Delamination mechanism | |
650 | 4 | |a Exfoliation | |
650 | 4 | |a Zinc-oxide nanoparticles | |
700 | 1 | |a Grosso-Giordano, Nicolás A. |e verfasserin |4 aut | |
700 | 1 | |a Schöttle, Christian |e verfasserin |4 aut | |
700 | 1 | |a Zones, Stacey |e verfasserin |4 aut | |
700 | 1 | |a Katz, Alexander |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Microporous and mesoporous materials |d Amsterdam [u.a.] : Elsevier, 1998 |g 283, Seite 55-63 |h Online-Ressource |w (DE-627)318368277 |w (DE-600)2012505-7 |w (DE-576)09529998X |x 1387-1811 |7 nnns |
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2019 |
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publishDate |
2019 |
allfields |
10.1016/j.micromeso.2019.03.048 doi (DE-627)ELV002115298 (ELSEVIER)S1387-1811(19)30196-9 DE-627 ger DE-627 rda eng 530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Okrut, Alexander verfasserin (orcid)0000-0002-0689-4346 aut Understanding the role of Zn 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles Grosso-Giordano, Nicolás A. verfasserin aut Schöttle, Christian verfasserin aut Zones, Stacey verfasserin aut Katz, Alexander verfasserin aut Enthalten in Microporous and mesoporous materials Amsterdam [u.a.] : Elsevier, 1998 283, Seite 55-63 Online-Ressource (DE-627)318368277 (DE-600)2012505-7 (DE-576)09529998X 1387-1811 nnns volume:283 pages:55-63 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.30 Mineralogie 35.68 Organische Verbindungen: Sonstiges 33.61 Festkörperphysik 35.90 Festkörperchemie 51.45 Werkstoffe mit besonderen Eigenschaften AR 283 55-63 |
spelling |
10.1016/j.micromeso.2019.03.048 doi (DE-627)ELV002115298 (ELSEVIER)S1387-1811(19)30196-9 DE-627 ger DE-627 rda eng 530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Okrut, Alexander verfasserin (orcid)0000-0002-0689-4346 aut Understanding the role of Zn 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles Grosso-Giordano, Nicolás A. verfasserin aut Schöttle, Christian verfasserin aut Zones, Stacey verfasserin aut Katz, Alexander verfasserin aut Enthalten in Microporous and mesoporous materials Amsterdam [u.a.] : Elsevier, 1998 283, Seite 55-63 Online-Ressource (DE-627)318368277 (DE-600)2012505-7 (DE-576)09529998X 1387-1811 nnns volume:283 pages:55-63 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.30 Mineralogie 35.68 Organische Verbindungen: Sonstiges 33.61 Festkörperphysik 35.90 Festkörperchemie 51.45 Werkstoffe mit besonderen Eigenschaften AR 283 55-63 |
allfields_unstemmed |
10.1016/j.micromeso.2019.03.048 doi (DE-627)ELV002115298 (ELSEVIER)S1387-1811(19)30196-9 DE-627 ger DE-627 rda eng 530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Okrut, Alexander verfasserin (orcid)0000-0002-0689-4346 aut Understanding the role of Zn 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles Grosso-Giordano, Nicolás A. verfasserin aut Schöttle, Christian verfasserin aut Zones, Stacey verfasserin aut Katz, Alexander verfasserin aut Enthalten in Microporous and mesoporous materials Amsterdam [u.a.] : Elsevier, 1998 283, Seite 55-63 Online-Ressource (DE-627)318368277 (DE-600)2012505-7 (DE-576)09529998X 1387-1811 nnns volume:283 pages:55-63 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.30 Mineralogie 35.68 Organische Verbindungen: Sonstiges 33.61 Festkörperphysik 35.90 Festkörperchemie 51.45 Werkstoffe mit besonderen Eigenschaften AR 283 55-63 |
allfieldsGer |
10.1016/j.micromeso.2019.03.048 doi (DE-627)ELV002115298 (ELSEVIER)S1387-1811(19)30196-9 DE-627 ger DE-627 rda eng 530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Okrut, Alexander verfasserin (orcid)0000-0002-0689-4346 aut Understanding the role of Zn 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles Grosso-Giordano, Nicolás A. verfasserin aut Schöttle, Christian verfasserin aut Zones, Stacey verfasserin aut Katz, Alexander verfasserin aut Enthalten in Microporous and mesoporous materials Amsterdam [u.a.] : Elsevier, 1998 283, Seite 55-63 Online-Ressource (DE-627)318368277 (DE-600)2012505-7 (DE-576)09529998X 1387-1811 nnns volume:283 pages:55-63 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.30 Mineralogie 35.68 Organische Verbindungen: Sonstiges 33.61 Festkörperphysik 35.90 Festkörperchemie 51.45 Werkstoffe mit besonderen Eigenschaften AR 283 55-63 |
allfieldsSound |
10.1016/j.micromeso.2019.03.048 doi (DE-627)ELV002115298 (ELSEVIER)S1387-1811(19)30196-9 DE-627 ger DE-627 rda eng 530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Okrut, Alexander verfasserin (orcid)0000-0002-0689-4346 aut Understanding the role of Zn 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles Grosso-Giordano, Nicolás A. verfasserin aut Schöttle, Christian verfasserin aut Zones, Stacey verfasserin aut Katz, Alexander verfasserin aut Enthalten in Microporous and mesoporous materials Amsterdam [u.a.] : Elsevier, 1998 283, Seite 55-63 Online-Ressource (DE-627)318368277 (DE-600)2012505-7 (DE-576)09529998X 1387-1811 nnns volume:283 pages:55-63 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.30 Mineralogie 35.68 Organische Verbindungen: Sonstiges 33.61 Festkörperphysik 35.90 Festkörperchemie 51.45 Werkstoffe mit besonderen Eigenschaften AR 283 55-63 |
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Enthalten in Microporous and mesoporous materials 283, Seite 55-63 volume:283 pages:55-63 |
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Enthalten in Microporous and mesoporous materials 283, Seite 55-63 volume:283 pages:55-63 |
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Mineralogie Organische Verbindungen: Sonstiges Festkörperphysik Festkörperchemie Werkstoffe mit besonderen Eigenschaften |
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topic_facet |
Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles |
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Microporous and mesoporous materials |
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Okrut, Alexander @@aut@@ Grosso-Giordano, Nicolás A. @@aut@@ Schöttle, Christian @@aut@@ Zones, Stacey @@aut@@ Katz, Alexander @@aut@@ |
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2019-01-01T00:00:00Z |
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530 DE-600 38.30 bkl 35.68 bkl 33.61 bkl 35.90 bkl 51.45 bkl Understanding the role of Zn Magadiite Delamination mechanism Exfoliation Zinc-oxide nanoparticles |
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Understanding the role of Zn |
abstract |
We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. |
abstractGer |
We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. |
abstract_unstemmed |
We investigated the effect of Zn2+ treatment on the exfoliation of layered silicate magadiite, as a model system, to better understand the role of zinc in surfactant-free zeolite exfoliation. Samples of magadiite and ball-milled magadiite were exfoliated via treatment with aqueous Zn(NO3)2 solution, and the resulting materials were characterized via powder X-ray diffraction, nitrogen physisorption, high-angle annular dark-field scanning transmission electron microscopy, and infrared spectroscopy. Zn2+ treatment of magadiite increases its external surface area by 40%, while Zn2+ treatment of ball-milled magadiite increases its external surface area by 109%. Acid-washing removes Zn(O)x(OH)y colloids and further increases external surface area, leading to a total surface area increase of 150% for magadiite after Zn2+ treatment and acid-washing, and 182% for ball-milled magadiite after Zn2+ treatment and acid-washing, by exposing surface area that was not accessible after Zn2+ treatment due to pore blocking. We propose a mechanism of exfoliation to account for these surface-area increases, which involves the Zn(O)x(OH)y colloids growing and forcing layers apart selectively at the grain boundaries. Ball milling not only makes existing grain boundaries more accessible, but it also creates new grain boundaries, resulting in more efficient exfoliation. |
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|
score |
7.398712 |