Zeolites and zeolite-based materials in analytical chemistry

Valdés, Mayra Granda; Peréz-Cordovés, Ana I.; Dı́az-Garcı́a, Marta Elena

doi:10.1016/j.trac.2005.04.016

Cited by 127 publications

(79 citation statements)

References 42 publications

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“…Zeolites are hydrated aluminosilicates belonging to the family of the tectosilicates, organized into regular three-dimensional networks with interconnected channels and cages [1,2]. Since the 1990s, the combination of some of the attractive properties of zeolites with electrochemical methods of analysis has opened a new area of research in the analytical biochemistry.…”

Section: Introductionmentioning

confidence: 99%

Application of Zeolites for Immobilization of Glucose Oxidase in Amperometric Biosensors

Горюшкина

Akata

Sacco

et al. 2014

SEMST

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Abstract. An investigation was performed to evaluate the effect of different zeolites (silicalite, zeolite Y and zeolite Beta with varying Si/Al ratio) on the performance of glucose amperometric biosensor based on immobilized glucose oxidase (GOD). It was observed that detection limit of biosensors based on GOD without zeolite was 0.64 mM of glucose. However, in the case of GOD immobilization with zeolites NH 4 -Beta-25, Na-Beta and silicalites, biosensors with smaller detection limits within the range of 0.01 to 0.04 mM of glucose were obtained. The study of selectivity of designed biosensors showed that biosensor based on GOD immobilized with zeolite NH 4 -Beta-25 was much selective comparing with biosensor based on GOD without zeolites. Stability of developed devises also was investigated, and in the case of biosensor with GOD and Silicalite-1 it was higher than for GOD without zeolite. Thus zeolites of different types can be effectively used for GOD immobilization in glucose amperometric biosensors development for optimization of sensitivity, selectivity and stability of these devises. Àíîòàö³ÿ. Ìåòîþ äîñë³äaeåííÿ áóëà îö³íêà âïëèâó ð³çíèõ òèï³â öåîë³ò³â (ñèë³êàë³ò³â, öå-îë³òó Y òà öåîë³ò³â Áåòà ç ð³çíèì ñï³ââ³äíîøåííÿì ñèë³ö³é-àëþì³í³é) íà ðîáî÷³ õàðàêòåðèñ-òèêè ãëþêîçíîãî àìïåðîìåòðè÷íîãî á³îñåíñîðà íà îñíîâ³ ³ììîá³ë³çîâàíî¿ ãëþêîçîîêñèäà-çè (ÃÎÄ). Áóëî âñòàíîâëåíî, ùî ãðàíèöÿ âèçíà÷åííÿ ñóáñòðàòó äëÿ á³îñåíñîðà ç ÃÎÄ áåç öåîë³ò³â ñòàíîâèòü 0,64 ìÌ ãëþêîçè, òîä³ ÿê ïðè ³ììîá³ë³çàö³¿ ÃÎÄ ç öåîë³òàìè NH 4 -Áå-òà-25, Na-Áåòà òà ñèë³êàë³òàìè áóëè îòðèìàí³ á³îñåíñîðè ç ìåíøåþ ãðàíèöåþ âèçíà÷åí-íÿ -â³ä 0,01 äî 0,04 ìÌ. Äîñë³äaeåííÿ ñåëåêòèâíîñò³ ñòâîðåíèõ á³îñåíñîð³â ïîêàçàëî, ùî ñåíñîð íà îñíîâ³ ÃÎÄ, ³ììîá³ë³çîâàíî¿ ç öåîë³òîì NH 4 -Áåòà-25, áóâ çíà÷íî ñåëåêòèâí³øèì ó ïîð³âíÿíí³ ç ñåíñîðîì íà îñíîâ³ ÃÎÄ áåç öåîë³ò³â. Òàêîae áóëî ïðîàíàë³çîâàíî ñòàá³ëü-í³ñòü ðîçðîáëåíèõ á³îñåíñîð³â òà ïîêàçàíî, ùî âîíà áóëà âèùîþ äëÿ ÃÎÄ, ³ììîá³ë³çîâàíî¿ ç Keywords: amperometric biosensor, glucose oxidase, zeolites, glucose

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Section: Introductionmentioning

confidence: 99%

Application of Zeolites for Immobilization of Glucose Oxidase in Amperometric Biosensors

Горюшкина

Akata

Sacco

et al. 2014

SEMST

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“…Zeolites are inorganic, nanoporous crystalline solids (Valdés et al, 2006;Sahner et al, 2008). The negatively charged aluminosilicate structure is balanced with exchangeable alkaline or alkaline earth metal cations.…”

Section: Introductionmentioning

confidence: 99%

Development of durable antimicrobial surfaces containing silver- and zinc-ion–exchanged zeolites

İyigündoğdu¹,

Demirci²,

Baç³

et al. 2014

Turk J Biol

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The present work involves development of stable antimicrobial materials containing silver-and zinc-ion-exchanged zeolites. Faujasite X and Linde type A zeolites were synthesized, and following ion exchange with Ag + and Zn ++ ions they were found to exhibit antimicrobial effects against bacteria (E. coli, P. aeruginosa, and S. aureus), yeast (C. albicans and C. glabrata), and fungi (A. niger and P. expansum). Zeolites-X and -A containing silver and zinc ions were then mixed with various coating materials, including paints and polypropylene, to develop antimicrobial composites. The long-term antimicrobial characteristics of zeolite-containing composite materials were investigated by inoculating selected microorganisms onto the surface of the materials. The results indicated that the higher the zeolite concentration present in the composite, the more long-term antimicrobial activity was achieved. Silver-ion-exchanged zeolites were more effective against bacterial and candidal species, while zinc zeolites exhibited noticeable antifungal properties. Materials manufactured with metal-ion-exchanged zeolites would prevent microbial growth on surfaces, reducing cross-contamination and infection risk as well as the microbial degradation of products.

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“…There are more synthetic than natural zeolites, but both have useful advantages as ion exchangers with a high surface area and adsorption capacity, which make them useful for removing heavy metals, water softening, and the control of malodors in waste water treatment. [4][5][6][7] In this study, we used a highly sensitive ELISA kit to enable higher dilution to reduce the soil matrix effect, and then considered the feasibility of employing synthetic zeolite and ultrafiltration in ELISA analysis.…”

Section: Introductionmentioning

confidence: 99%

Improvement of ELISA analysis for soil residue analysis by reducing soil matrix effects

2008

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Zeolites and zeolite-based materials in analytical chemistry

Cited by 127 publications

References 42 publications

Application of Zeolites for Immobilization of Glucose Oxidase in Amperometric Biosensors

Application of Zeolites for Immobilization of Glucose Oxidase in Amperometric Biosensors

Development of durable antimicrobial surfaces containing silver- and zinc-ion–exchanged zeolites

Improvement of ELISA analysis for soil residue analysis by reducing soil matrix effects

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