A mesoporous poly-melamine-formaldehyde polymer as a solid sorbent for toxic metal removal

Tan, Mei Xuan; Sum, Yin Ngai; Ying, Jackie Y.; Zhang, Yugen

doi:10.1039/c3ee42216j

Cited by 164 publications

(95 citation statements)

References 45 publications

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“…A simple, green, and efficient strategy for the synthesis of benzoxazoles and benzothiazoles was developed [39] by using the mesoporous poly(melamine-formaldehyde) 50 [40][41][42] prepared starting from melamine and paraformaldehyde (Scheme 22). Polymer 50 acted as bifunctional catalyst and, under the optimized catalytic conditions, led to benzoxazoles and benzothiazoles with good and excellent yields (71%-99%) by reaction of substituted 2-aminophenols with benzaldehydes using dioxygen as oxidant.…”

Section: Miscellaneous Examplesmentioning

confidence: 99%

Advances in Organic and Organic-Inorganic Hybrid Polymeric Supports for Catalytic Applications

2016

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Abstract:In this review, the most recent advances (2014)(2015)(2016) on the synthesis of new polymer-supported catalysts are reported, focusing the attention on the synthetic strategies developed for their preparation. The polymer-supported catalysts examined will be organic-based polymers and organic-inorganic hybrids and will include, among others, polystyrenes, poly-ionic liquids, chiral ionic polymers, dendrimers, carbon nanotubes, as well as silica and halloysite-based catalysts. Selected examples will show the synthesis and application in the field of organocatalysis and metal-based catalysis both for non-asymmetric and asymmetric transformations.

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Section: Miscellaneous Examplesmentioning

confidence: 99%

Advances in Organic and Organic-Inorganic Hybrid Polymeric Supports for Catalytic Applications

2016

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“…28 As an important example, a mesoporous polymer of melamine-formaldehyde (mPMF), which is generally prepared via a polycondensation reaction using melamine and formaldehyde, can possess many interesting physicochemical properties, such as a high aqueous stability, large surface area, efficient catalysis and fast absorption kinetics. [29][30][31][32] In particular, mPMF has been recognized to present a considerably high absorption capacity for Pb 2+ ions. 32 To the best of our knowledge, however, the outstanding absorption ability of mPMF has not yet been applied to the detection of Pb 2+ ions.…”

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confidence: 99%

“…[29][30][31][32] In particular, mPMF has been recognized to present a considerably high absorption capacity for Pb 2+ ions. 32 To the best of our knowledge, however, the outstanding absorption ability of mPMF has not yet been applied to the detection of Pb 2+ ions. In the present work, mPMF was successfully synthesized and further deposited on disposable SPEs for the direct probing of lead levels in one drop of blood with high sensitivity and selectivity by electrochemical square-wave voltammetry (SWV) of solid-state PbCl 2 .…”

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confidence: 99%

“…Accordingly, triazine rings and aminal (-NH-CH 2 -NH-) functional groups are thought to exist throughout the mPMF matrix, serving as strong chelating ligands for the capture of Pb 2+ ions. 32 Therefore, mPMF, with its mesoporous structure, large surface area and high aminechelating capacity, could be applied as an ideal absorbent for its deposition on electrodes for the sensing of Pb 2+ ions.…”

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confidence: 99%

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“One-drop-of-blood” electroanalysis of lead levels in blood using a foam-like mesoporous polymer of melamine–formaldehyde and disposable screen-printed electrodes

Zhao

et al. 2015

Analyst

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A foam-like mesoporous polymer of melamine-formaldehyde (mPMF) was synthesized and further deposited on disposable screen-printed electrodes (SPEs) for the electroanalysis of Pb 2+ ions in blood. Investigations indicate that the prepared mPMF is ultrastable in water, showing a mesoporous structure and an amine-rich composition, as characterized by electronic microscopy images and IR spectra. Importantly, it possesses a highly-selective chelating ability and a powerful absorbent capacity for Pb 2+ ions. By way of solid-state PbCl 2 voltammetry, the mPMF-modified sensor could allow for the detection of Pb 2+ ions in one drop of blood with a high detection selectivity, sensitivity (down to about 0.10 μg L −1 Pb 2+ ions) and reproducibility. Such a simple "one-drop-of-blood" electroanalysis method equipped with disposable SPEs and a portable electrochemical transducer can be tailored for the field-deployable or on-site monitoring of blood Pb 2+ levels in the clinical laboratory.

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“…Of all the metals, the 2 most prevalent pollutantsare Cu 2+ and Pb 2+ due to extensive use in industrial production [2]. Pb is a non-essential element and the content of Pb 2+ in plants is used for assessing metal toxicity [3].…”

Section: Introductionmentioning

confidence: 99%

Gene Cloning, Protein Expression and Functional Analysis of a type 3 Metallothionein with Bioaccumulation Potential from Sonneratia alba

Niu¹,

Li²,

Yi³

et al. 2018

Pol. J. Environ. Stud.

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Sonneratia alba (S. alba) is a mangrove species grown in brackish water of tropical and subtropical regions. Due to its unique environment, it has evolved various mechanisms for modulating salt and metal levels. In order to find the genes connected with bioaccumulation of metals, the root transcriptome annotation of Sonneratia alba was analyzed and a new metallothionein (MT) gene was cloned. Sequence analysis found that the new MT gene belongs to type 3 MT, which is mostly expressed in roots. A simple and efficient method was used to express the type 3 MT of S. alba (SaMT3) by transforming the recombinant expression vector pET15b-SaMT3 into Escherichia coli (E. coli) Rosetta-gami and induction with the optimal conditions of 500 μM Isopropyl β-D-1-thiogalactopyranoside (IPTG) at 24ºC for 12 h. OD 600

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A mesoporous poly-melamine-formaldehyde polymer as a solid sorbent for toxic metal removal

Cited by 164 publications

References 45 publications

Advances in Organic and Organic-Inorganic Hybrid Polymeric Supports for Catalytic Applications

Advances in Organic and Organic-Inorganic Hybrid Polymeric Supports for Catalytic Applications

“One-drop-of-blood” electroanalysis of lead levels in blood using a foam-like mesoporous polymer of melamine–formaldehyde and disposable screen-printed electrodes

Gene Cloning, Protein Expression and Functional Analysis of a type 3 Metallothionein with Bioaccumulation Potential from Sonneratia alba

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