Application of Nanomaterials in Environmental Analysis

Topic Information

Dear Colleagues,

With the rapid development of nanomaterial science, novel functional nanomaterials have been applied to analytical environmental analysis. Considering the growing awareness of safety, health and environmental issues, nanomaterials have shown great potential in the detecting and eliminating environmental pollutants due to their small size and large surface area. This Topic will focus on comprehensive research outlining progress on the synthesis and application of nanomaterials in detecting and removing environmental pollutants. Potential topics include, but are not limited to: 1. Advanced functional nanomaterials for environmental pollutant removal; 2. Nanomaterials for the detection of environmental pollutant; 3. The application of advanced nanomaterials in biosensors; 4. Levels of environmental pollutants in biological samples.

Dr. Yonggang Zhao
Dr. Yun Zhang
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Applied Nano applnano	-	-	2020	17.1 Days	CHF 1000	Submit
Catalysts catalysts	3.8	6.8	2011	12.9 Days	CHF 2700	Submit
Materials materials	3.1	5.8	2008	15.5 Days	CHF 2600	Submit
Nanomaterials nanomaterials	4.4	8.5	2010	13.8 Days	CHF 2900	Submit
Polymers polymers	4.7	8.0	2009	14.5 Days	CHF 2700	Submit
Molecules molecules	4.2	7.4	1996	15.1 Days	CHF 2700	Submit

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Published Papers (2 papers)

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All Applied Nano Catalysts Materials Nanomaterials Polymers Molecules

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Supplementary material:
Supplementary File 1 (ZIP, 398 KiB)

17 pages, 4662 KiB  

Open AccessArticle

Fast Determination of Eleven Food Additives in River Water Using C18 Functionalized Magnetic Organic Polymer Nanocomposite Followed by High-Performance Liquid Chromatography

by Chao Lei, Shun Zhang, Wen-Xin Liu, Ming-Li Ye and Yong-Gang Zhao

Molecules 2024, 29(15), 3675; https://doi.org/10.3390/molecules29153675 - 2 Aug 2024

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Abstract

A novel magnetic nanomaterial with Fe₃O₄ as the core, PS-DVB as the shell layer, and the surface modified with C18 (C18−PS−DVB−Fe₃O₄) had been synthesized by seeded emulsion polymerization. C18−PS−DVB−Fe₃O₄ retains the advantages of [...] Read more.

A novel magnetic nanomaterial with Fe₃O₄ as the core, PS-DVB as the shell layer, and the surface modified with C18 (C18−PS−DVB−Fe₃O₄) had been synthesized by seeded emulsion polymerization. C18−PS−DVB−Fe₃O₄ retains the advantages of the chemical stability, large porosity, and uniform morphology of organic polymers and has the magnetic properties of Fe₃O₄. A simple, flexible, and efficient magnetic dispersive solid phase extraction (Mag-dSPE) method for the extraction of preservatives, sweeteners, and colorants in river water was established. C18−PS−DVB−Fe₃O₄ was used as an adsorbent for Mag-dSPE and was coupled with high-performance liquid chromatography (HPLC) to detect 11 food additives: acesulfame, amaranth, benzoic acid, tartrazine, saccharin sodium, sorbic acid, dehydroacetic acid, sunset yellow, allura red, brilliant blue, and erythrosine. Under the optimum extraction conditions, combined with ChromCoreTMAQC18 (5 μm, 4.6 × 250 mm), 20 mmol/L ammonium acetate aqueous solution and methanol were used as mobile phases, and the detection wavelengths were 240 nm and 410 nm. The limits of detection (LODs) of 11 food additives were 0.6–3.1 μg/L with satisfactory recoveries ranging from 86.53% to 106.32%. And the material could be reused for five cycles without much sacrifice of extraction efficiency. The proposed method has been used to determine food additives in river water samples, and results demonstrate the applicability of the proposed C18−PS−DVB−Fe₃O₄ Mag-dSPE coupled with the HPLC method to environment monitoring analysis. Full article

(This article belongs to the Topic Application of Nanomaterials in Environmental Analysis)

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Supplementary File 1 (ZIP, 720 KiB)

13 pages, 9170 KiB  

Open AccessArticle

Chronoamperometric Ammonium Ion Detection in Water via Conductive Polymers and Gold Nanoparticles

by Roberta Farina, Silvia Scalese, Domenico Corso, Giuseppe Emanuele Capuano, Giuseppe Andrea Screpis, Maria Anna Coniglio, Guglielmo Guido Condorelli and Sebania Libertino

Molecules 2024, 29(13), 3028; https://doi.org/10.3390/molecules29133028 - 26 Jun 2024

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Abstract

Monitoring of ammonium ion levels in water is essential due to its significant impact on environmental and human health. This work aims to fabricate and characterize sensitive, real-time, low-cost, and portable amperometric sensors for low NH₄⁺ concentrations in water. Two strategies [...] Read more.

Monitoring of ammonium ion levels in water is essential due to its significant impact on environmental and human health. This work aims to fabricate and characterize sensitive, real-time, low-cost, and portable amperometric sensors for low NH₄⁺ concentrations in water. Two strategies were conducted by cyclic voltammetry (CV): electrodeposition of Au nanoparticles on a commercial polyaniline/C electrode (Au/PANI/C), and CV of electropolymerized polyaniline on a commercial carbon electrode (Au/PANIep/C). Au NPs increase the electrical conductivity of PANI and its ability to transfer charges during electrochemical reactions. The electrode performances were tested in a concentration range from 0.35 µM to 7 µM in NH₄⁺ solution. The results show that the Au/PANI/C electrode performs well for high NH₄⁺ concentrations (0.34 µM LoD) and worsens for low NH₄⁺ concentrations (0.01 µM LoD). A reverse performance occurs for the electrode Au/PANIep/C, with a 0.03 µM LoD at low NH₄⁺ concentration and 0.07 µM LoD at high NH₄⁺ concentration. The electrodes exhibit a good reproducibility, with a maximum RSD of 3.68% for Au/PANI/C and 5.94% for Au/PANIep/C. In addition, the results of the repeatability tests show that the electrochemical reaction of sensing is fully reversible, leaving the electrode ready for a new detection event. Full article

(This article belongs to the Topic Application of Nanomaterials in Environmental Analysis)

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