Amine-functionalized titanium metal organic framework for photochemical vapor generation for determination of selenium by inductively coupled plasma optical emission spectrometry

Luo, Juan; Xu, Fujian; Tu, Jiping; Wu, Xi; Hou, Xiandeng

doi:10.1016/j.microc.2017.02.005

Cited by 43 publications

(6 citation statements)

References 31 publications

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“…Apparently, charge separation and subsequent photogenerated electron–hole pairs of materials may promote the photodecomposition of organic compounds and enhance the PVG of Bi 3+ to some extent, but it was not the main reason for the efficient photochemical reduction of Bi 3+ , as the signal responses from PVG systems using those materials with semiconductor properties as photocatalysts were rather low (Figure b). MOFs including CAU-1 and MIL-125-NH 2 have been used as photocatalysts for the PVG of Se based on their charge separation under UV irradiation. , Different from previous reports, metal-nodes-dependent photocatalytic activity of MOFs was observed for Bi PVG. Relatively high signal responses were obtained in PVG systems with the other two Fe-containing MOFs, which have the same metal site as Fe-BTC but with different organic linkers, as shown in Figure b.…”

Section: Resultsmentioning

confidence: 82%

Reduction of Interferences Using Fe-Containing Metal–Organic Frameworks for Matrix Separation and Enhanced Photochemical Vapor Generation of Trace Bismuth

Jia

Mou

et al. 2019

Anal. Chem.

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Photochemical vapor generation (PVG) has emerged as a promising sample introduction method for atomic spectrometry in recent years. Despite its great success, a major impediment for the wide application of PVG is the interferences from the coexisting ions, especially transition-metal ions. In this work, iron and 1,3,5-benzenetricarboxylic (Fe-BTC), a Fe-containing metal–organic framework (MOF) material, was synthesized and first used as a platform integrating the sample matrix separation, preconcentration, and photocatalysis for the highly selective determination of elements by PVG. Bismuth was selected as a model analyte. Fe-BTC served not only as the photocatalyst for the PVG of Bi3+ but also as an efficient absorbent for the separation of analytes from the sample matrix. Compared with the previous PVG system, the performance of tolerating interferences toward coexisting ions of the proposed method has been greatly improved after using Fe-BTC-based matrix separation. Thus the excess of 10 mg L–1 of Co2+ and 100 mg L–1 of Cu2+, Ni2+, and Fe3+ caused no obvious interferences for 1 μg L–1 of Bi determination. Under the optimal conditions, the limit of detection (LOD, 3σ) of the developed method was 0.3 ng L–1 with the inductively coupled plasma–mass spectrometry (ICPMS) measurement, which could be lowered down to 0.04 ng L–1 after ten times of preconcentration with Fe-BTC prior to analysis. This method was successfully applied for the analysis of Bi in complicated sample matrices of soil (GBW07401), sediment (GBW07310), nickel–iron alloy (GBW01622), and nickel alloys (GBW01641) by the external calibration method.

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Section: Resultsmentioning

confidence: 82%

Reduction of Interferences Using Fe-Containing Metal–Organic Frameworks for Matrix Separation and Enhanced Photochemical Vapor Generation of Trace Bismuth

Jia

Mou

et al. 2019

Anal. Chem.

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“…Distinct synthetic methodologies have been used previously to prepare nano-scaled MIL-125-NH 2 : (i) solvothermal synthesis (150 °C/20 h or 50 °C/16 h) [ 40 , 41 , 42 ]; (ii) microwave-assisted solvothermal route (100 °C/15 min or 150 °C/1 h) [ 36 , 43 ]; and (iii) under reflux for 72 h [ 44 ]. Keeping in mind the desire for a simple, easy and low-cost synthetic approach, we optimized an atmospheric pressure method to obtain smaller MIL-125-NH 2 NPs that are compatible with intravenous administration.…”

Section: Resultsmentioning

confidence: 99%

Nanometric MIL-125-NH2 Metal–Organic Framework as a Potential Nerve Agent Antidote Carrier

et al. 2017

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The three-dimensional (3D) microporous titanium aminoterephthalate MIL-125-NH2 (MIL: Material of Institut Lavoisier) was successfully isolated as monodispersed nanoparticles, which are compatible with intravenous administration, by using a simple, safe and low-cost synthetic approach (100 °C/32 h under atmospheric pressure) so that for the first time it could be considered for encapsulation and the release of drugs. The nerve agent antidote 2-[(hydroxyimino)methyl]-1-methyl-pyridinium chloride (2-PAM or pralidoxime) was effectively encapsulated into the pores of MIL-125-NH2 as a result of the interactions between 2-PAM and the pore walls being mediated by π-stacking and hydrogen bonds, as deduced from infrared spectroscopy and Monte Carlo simulation studies. Finally, colloidal solutions of MIL-125-NH2 nanoparticles exhibited remarkable stability in different organic media, aqueous solutions at different pH and under relevant physiological conditions over time (24 h). 2-PAM was rapidly released from the pores of MIL-125-NH2 in vitro.

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“…[96] For instance, ICP-OES was recognized by Luo et al as a highly sensitive method in the determination of trace selenium in MIL-125-NH 2 . [97]…”

Section: Characterization Techniques Of Mof Electrocatalystsmentioning

confidence: 99%

Metal‐Organic Frameworks for Efficient Electrochemical Reduction of Carbon Dioxide

et al. 2023

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The large concentration of carbon dioxide (CO2) in the atmosphere can be utilized in industrial production using effective electrocatalysts such as metal‐organic frameworks (MOFs). Due to good properties such as high surface area, designable functionality, and uniform constitution, MOFs are regarded as promising electrocatalysts for the carbon dioxide electrochemical reduction reaction (eCO2RR). This review covers the importance, challenges, and mechanism of eCO2RR, and simply discusses the progress in the synthesis methods and characterization of MOFs. The review also thoroughly discusses the advances of single metal‐based MOFs, mixed metal‐based MOFs, and MOF derivatives as electrocatalysts for efficient eCO2RR.

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Amine-functionalized titanium metal organic framework for photochemical vapor generation for determination of selenium by inductively coupled plasma optical emission spectrometry

Cited by 43 publications

References 31 publications

Reduction of Interferences Using Fe-Containing Metal–Organic Frameworks for Matrix Separation and Enhanced Photochemical Vapor Generation of Trace Bismuth

Reduction of Interferences Using Fe-Containing Metal–Organic Frameworks for Matrix Separation and Enhanced Photochemical Vapor Generation of Trace Bismuth

Nanometric MIL-125-NH2 Metal–Organic Framework as a Potential Nerve Agent Antidote Carrier

Metal‐Organic Frameworks for Efficient Electrochemical Reduction of Carbon Dioxide

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