Layered europium hydroxide system for phosphorous sensing and remediation

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A Layered Lanthanide Hydroxide (LLH) material based on europium (LEuH, Eu8(OH)20Cl4.6H2O) was intercalated with 2,6-naphtalenedicarboxylate (NDC) yielding a material presenting the bright red luminescence characteristic of Eu3 +, both by direct excitation of europium and energy transfer from NDC. The material behaves as a sensor towards anions which display the ability to exchange with NDC. The sensor was tested with several anions (phosphate, sulphate, pyrophosphate, acetate, and tetraborate anions) and the changes in NDC (λem = 380 nm) and europium (λem = 615 nm) emission intensities upon excitation of NDC (λex = 357 nm), were studied. Phosphate was found to have the highest degree of intercalation and displayed a strong increase (400% fold) on the fluorescence intensity of NDC. The presence of phosphate was further confirmed with Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES). Taking advantage of LEuH selectivity towards phosphate, its applicability in phosphorus remediation was studied presenting high sequestration capacity followed by controlled release of phosphate in three consecutive cycles and improved stability of the LEuH host material. These results highlight the significant potential of LLHs as new scavenging agents for inorganic phosphate.

Original languageEnglish
Pages (from-to)216-222
Number of pages7
JournalApplied Clay Science
Volume146
DOIs
Publication statusPublished - 15 Sep 2017

Fingerprint

Europium
europium
Remediation
hydroxide
remediation
Phosphates
phosphate
anion
Anions
sensor
phosphate (inorganic)
Lanthanoid Series Elements
luminescence
Scavenging
Sensors
Inductively coupled plasma
Intercalation
acetate
rare earth element
spectrometer

Keywords

  • Layered lanthanide hydroxide
  • Layered rare earth hydroxide
  • Phosphate adsorption
  • Phosphate sensing
  • Phosphorus remediation

Cite this

@article{48baa965ec6547beb994154a9d16d730,
title = "Layered europium hydroxide system for phosphorous sensing and remediation",
abstract = "A Layered Lanthanide Hydroxide (LLH) material based on europium (LEuH, Eu8(OH)20Cl4.6H2O) was intercalated with 2,6-naphtalenedicarboxylate (NDC) yielding a material presenting the bright red luminescence characteristic of Eu3 +, both by direct excitation of europium and energy transfer from NDC. The material behaves as a sensor towards anions which display the ability to exchange with NDC. The sensor was tested with several anions (phosphate, sulphate, pyrophosphate, acetate, and tetraborate anions) and the changes in NDC (λem = 380 nm) and europium (λem = 615 nm) emission intensities upon excitation of NDC (λex = 357 nm), were studied. Phosphate was found to have the highest degree of intercalation and displayed a strong increase (400{\%} fold) on the fluorescence intensity of NDC. The presence of phosphate was further confirmed with Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES). Taking advantage of LEuH selectivity towards phosphate, its applicability in phosphorus remediation was studied presenting high sequestration capacity followed by controlled release of phosphate in three consecutive cycles and improved stability of the LEuH host material. These results highlight the significant potential of LLHs as new scavenging agents for inorganic phosphate.",
keywords = "Layered lanthanide hydroxide, Layered rare earth hydroxide, Phosphate adsorption, Phosphate sensing, Phosphorus remediation",
author = "Pereira, {Cl{\'a}udia C. L.} and Lima, {Jo{\~a}o Carlos} and Moro, {Artur J.} and Bernardo Monteiro",
note = "Work partially supported by FCT (Portugal) under the project UID/Multi/04349/2013 and grants to Claudia C. L. Pereira (SFRH/BPD/108959/2015), Artur J. Moro (SFRH/BDP/69210/2010) and Bernardo Monteiro (SFRH/BPD/47087/2008).",
year = "2017",
month = "9",
day = "15",
doi = "10.1016/j.clay.2017.06.002",
language = "English",
volume = "146",
pages = "216--222",
journal = "Applied Clay Science",
issn = "0169-1317",
publisher = "Elsevier Science B.V., Inc",

}

Layered europium hydroxide system for phosphorous sensing and remediation. / Pereira, Cláudia C. L.; Lima, João Carlos; Moro, Artur J.; Monteiro, Bernardo.

In: Applied Clay Science, Vol. 146, 15.09.2017, p. 216-222.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Layered europium hydroxide system for phosphorous sensing and remediation

AU - Pereira, Cláudia C. L.

AU - Lima, João Carlos

AU - Moro, Artur J.

AU - Monteiro, Bernardo

N1 - Work partially supported by FCT (Portugal) under the project UID/Multi/04349/2013 and grants to Claudia C. L. Pereira (SFRH/BPD/108959/2015), Artur J. Moro (SFRH/BDP/69210/2010) and Bernardo Monteiro (SFRH/BPD/47087/2008).

PY - 2017/9/15

Y1 - 2017/9/15

N2 - A Layered Lanthanide Hydroxide (LLH) material based on europium (LEuH, Eu8(OH)20Cl4.6H2O) was intercalated with 2,6-naphtalenedicarboxylate (NDC) yielding a material presenting the bright red luminescence characteristic of Eu3 +, both by direct excitation of europium and energy transfer from NDC. The material behaves as a sensor towards anions which display the ability to exchange with NDC. The sensor was tested with several anions (phosphate, sulphate, pyrophosphate, acetate, and tetraborate anions) and the changes in NDC (λem = 380 nm) and europium (λem = 615 nm) emission intensities upon excitation of NDC (λex = 357 nm), were studied. Phosphate was found to have the highest degree of intercalation and displayed a strong increase (400% fold) on the fluorescence intensity of NDC. The presence of phosphate was further confirmed with Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES). Taking advantage of LEuH selectivity towards phosphate, its applicability in phosphorus remediation was studied presenting high sequestration capacity followed by controlled release of phosphate in three consecutive cycles and improved stability of the LEuH host material. These results highlight the significant potential of LLHs as new scavenging agents for inorganic phosphate.

AB - A Layered Lanthanide Hydroxide (LLH) material based on europium (LEuH, Eu8(OH)20Cl4.6H2O) was intercalated with 2,6-naphtalenedicarboxylate (NDC) yielding a material presenting the bright red luminescence characteristic of Eu3 +, both by direct excitation of europium and energy transfer from NDC. The material behaves as a sensor towards anions which display the ability to exchange with NDC. The sensor was tested with several anions (phosphate, sulphate, pyrophosphate, acetate, and tetraborate anions) and the changes in NDC (λem = 380 nm) and europium (λem = 615 nm) emission intensities upon excitation of NDC (λex = 357 nm), were studied. Phosphate was found to have the highest degree of intercalation and displayed a strong increase (400% fold) on the fluorescence intensity of NDC. The presence of phosphate was further confirmed with Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES). Taking advantage of LEuH selectivity towards phosphate, its applicability in phosphorus remediation was studied presenting high sequestration capacity followed by controlled release of phosphate in three consecutive cycles and improved stability of the LEuH host material. These results highlight the significant potential of LLHs as new scavenging agents for inorganic phosphate.

KW - Layered lanthanide hydroxide

KW - Layered rare earth hydroxide

KW - Phosphate adsorption

KW - Phosphate sensing

KW - Phosphorus remediation

UR - http://www.scopus.com/inward/record.url?scp=85020682535&partnerID=8YFLogxK

U2 - 10.1016/j.clay.2017.06.002

DO - 10.1016/j.clay.2017.06.002

M3 - Article

VL - 146

SP - 216

EP - 222

JO - Applied Clay Science

JF - Applied Clay Science

SN - 0169-1317

ER -