Abstract
We report a new microporous metal-organic framework (MOF) H16[Zr6O16(H2PATP)4]Cl8·xH2O (H2PATP = 2-((pyridin-1-ium-2-ylmethyl)ammonio)terephthalate), denoted as MOR-2 (metal organic resin-2). MOR-2 represents the first Zr4+-terephthalate MOF with an 8-connected net and also the first example where a bulky functional group was introduced into the terephthalate scaffold prior to the MOF synthesis. MOR-2 shows extraordinary capability to rapidly capture (within 1 min) hexavalent chromium with a sorption capacity up to 194 mg Cr(vi) per g, which far exceeds those reported for the known Cr(vi) sorbents. Moreover, MOR-2 in its composite form with alginic acid (HA) can be utilized in ion exchange columns, which are highly efficient for the removal of Cr(vi) from aqueous solutions including industrial waste samples and also can be regenerated and reused several times with minimal loss (<20%) of their capacity. Besides an excellent sorbent, MOR-2 is also a highly efficient sensor for real time detection of Cr(vi) species as revealed by fluorescence titration experiments in acidic aqueous media. The Cr(vi) detection limits were found as low as 4 ppb, while the system exhibited excellent sensitivity when real world, instead of standard, samples were employed. Thus, the MOR-2 material is a unique example combining both excellent sorption and exceptional luminescence sensing of Cr(vi) species in aqueous solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 14707-14719 |
| Number of pages | 13 |
| Journal | Journal of Materials Chemistry A |
| Volume | 5 |
| Issue number | 28 |
| DOIs | |
| Publication status | Published - Jan 1 2017 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
All in one porous material : Exceptional sorption and selective sensing of hexavalent chromium by using a Zr4+ MOF. / Rapti, Sofia; Sarma, Debajit; Diamantis, Stavros A.; Skliri, Euaggelia; Armatas, Gerasimos S.; Tsipis, Athanassios C.; Hassan, Youssef S.; Alkordi, Mohamed; Malliakas, Christos D.; Kanatzidis, Mercouri G; Lazarides, Theodore; Plakatouras, John C.; Manos, Manolis J.
In: Journal of Materials Chemistry A, Vol. 5, No. 28, 01.01.2017, p. 14707-14719.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - All in one porous material
T2 - Exceptional sorption and selective sensing of hexavalent chromium by using a Zr4+ MOF
AU - Rapti, Sofia
AU - Sarma, Debajit
AU - Diamantis, Stavros A.
AU - Skliri, Euaggelia
AU - Armatas, Gerasimos S.
AU - Tsipis, Athanassios C.
AU - Hassan, Youssef S.
AU - Alkordi, Mohamed
AU - Malliakas, Christos D.
AU - Kanatzidis, Mercouri G
AU - Lazarides, Theodore
AU - Plakatouras, John C.
AU - Manos, Manolis J.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - We report a new microporous metal-organic framework (MOF) H16[Zr6O16(H2PATP)4]Cl8·xH2O (H2PATP = 2-((pyridin-1-ium-2-ylmethyl)ammonio)terephthalate), denoted as MOR-2 (metal organic resin-2). MOR-2 represents the first Zr4+-terephthalate MOF with an 8-connected net and also the first example where a bulky functional group was introduced into the terephthalate scaffold prior to the MOF synthesis. MOR-2 shows extraordinary capability to rapidly capture (within 1 min) hexavalent chromium with a sorption capacity up to 194 mg Cr(vi) per g, which far exceeds those reported for the known Cr(vi) sorbents. Moreover, MOR-2 in its composite form with alginic acid (HA) can be utilized in ion exchange columns, which are highly efficient for the removal of Cr(vi) from aqueous solutions including industrial waste samples and also can be regenerated and reused several times with minimal loss (<20%) of their capacity. Besides an excellent sorbent, MOR-2 is also a highly efficient sensor for real time detection of Cr(vi) species as revealed by fluorescence titration experiments in acidic aqueous media. The Cr(vi) detection limits were found as low as 4 ppb, while the system exhibited excellent sensitivity when real world, instead of standard, samples were employed. Thus, the MOR-2 material is a unique example combining both excellent sorption and exceptional luminescence sensing of Cr(vi) species in aqueous solutions.
AB - We report a new microporous metal-organic framework (MOF) H16[Zr6O16(H2PATP)4]Cl8·xH2O (H2PATP = 2-((pyridin-1-ium-2-ylmethyl)ammonio)terephthalate), denoted as MOR-2 (metal organic resin-2). MOR-2 represents the first Zr4+-terephthalate MOF with an 8-connected net and also the first example where a bulky functional group was introduced into the terephthalate scaffold prior to the MOF synthesis. MOR-2 shows extraordinary capability to rapidly capture (within 1 min) hexavalent chromium with a sorption capacity up to 194 mg Cr(vi) per g, which far exceeds those reported for the known Cr(vi) sorbents. Moreover, MOR-2 in its composite form with alginic acid (HA) can be utilized in ion exchange columns, which are highly efficient for the removal of Cr(vi) from aqueous solutions including industrial waste samples and also can be regenerated and reused several times with minimal loss (<20%) of their capacity. Besides an excellent sorbent, MOR-2 is also a highly efficient sensor for real time detection of Cr(vi) species as revealed by fluorescence titration experiments in acidic aqueous media. The Cr(vi) detection limits were found as low as 4 ppb, while the system exhibited excellent sensitivity when real world, instead of standard, samples were employed. Thus, the MOR-2 material is a unique example combining both excellent sorption and exceptional luminescence sensing of Cr(vi) species in aqueous solutions.
UR - http://www.scopus.com/inward/record.url?scp=85025078895&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85025078895&partnerID=8YFLogxK
U2 - 10.1039/c7ta04496h
DO - 10.1039/c7ta04496h
M3 - Article
AN - SCOPUS:85025078895
VL - 5
SP - 14707
EP - 14719
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 28
ER -