■ CONTENTS Novel ECL Systems 358 Novel Organic Luminophores 358 Novel Inorganic Luminophores 359 Novel Nanomaterial System 360 Detection Methodologies and Signaling Amplification Strategies 361 General Detection Methodologies 361 Novel Signal Amplification Strategies 361 ECL Applications 362 Metal Ions Detection 362 Small Molecules Detection 362 ECL Immunoassay 363 ECL Genosensors 365 ECL Cytosensors 366 Conclusions and Outlooks 368 Author Information 369 Corresponding Author 369 ORCID 369 Author Contributions 369 Notes 369 Biographies 369 Acknowledgments 369 References 369

Recent Advances in Electrochemiluminescence Analysis.

Recently, combination of molecularly imprinted polymers (MIPs) with additional features, e.g. magnetic properties, has led to good results. Compared with conventional MIPs, magnetic molecularly imprinted polymers (MMIPs) have attracted considerable attentions attributing to the fact that they not only exhibit outstanding magnetism but also have speciﬁc selective binding for template molecules. However, use of MMIPs still faces challenges such as slow mass transfer, low binding capacity, and template leakage. In this article, we review several novel applications of MMIP-based approaches that were applied to food and environmental sample analysis and can overcome these problems. We discuss on brief descriptions of advantages/disadvantages and how these methods could improve the extraction and absorption process for a variety of analytes. Also, we compare each novel magnetic extraction technique with earlier studies in analytical parameters. Finally, some of the future MMIPs-based perspectives will be given.

Application of magnetic molecularly imprinted polymer as a versatile and highly selective tool in food and environmental analysis: Recent developments and trends

It is a major challenge to achieve fast charging and high reversible capacity in potassium ion storing carbons. Here, we synthesized sulfur-rich graphene nanoboxes (SGNs) by one-step chemical vapor deposition to deliver exceptional rate and cyclability performance as potassium ion battery and potassium ion capacitor (PIC) anodes. The SGN electrode exhibits a record reversible capacity of 516 mAh g-1 at 0.05 A g-1, record fast charge capacity of 223 mA h g-1 at 1 A g-1, and exceptional stability with 89% capacity retention after 1000 cycles. Additionally, the SGN-based PIC displays highly favorable Ragone chart characteristics: 112 Wh kg-1at 505 W kg-1 and 28 Wh kg-1 at 14618 W kg-1 with 92% capacity retention after 6000 cycles. X-ray photoelectron spectroscopy analysis illustrates a charge storage sequence based primarily on reversible ion binding at the structural-chemical defects in the carbon and the reversible formation of K-S-C and K2S compounds. Transmission electron microscopy analysis demonstrates reversible dilation of graphene due to ion intercalation, which is a secondary source of capacity at low voltage. This intercalation mechanism is shown to be stable even at cycle 1000. Galvanostatic intermittent titration technique analysis yields diffusion coefficients from 10-10 to 10-12 cm2 s-1, an order of magnitude higher than S-free carbons. The direct electroanalytic/analytic comparison indicates that chemically bound sulfur increases the number of reversible ion bonding sites, promotes reaction-controlled over diffusion-controlled kinetics, and stabilizes the solid electrolyte interphase. It is also demonstrated that the initial Coulombic efficiency can be significantly improved by switching from a standard carbonate-based electrolyte to an ether-based one.

Sulfur-Rich Graphene Nanoboxes with Ultra-High Potassiation Capacity at Fast Charge: Storage Mechanisms and Device Performance.

Owing to the high toxicity and detrimental effects of chemical contaminants to human health and the environment, public concerns over chemical contaminants in the environment and in foods have been mounting drastically. It is therefore significant to monitor contaminants via portable sensing devices, which encompass the demands of being low-cost and the potential for online environmental monitoring and food safety applications. This review will assess various concepts and recent advancements in design and the application of state-of-the-art nanomaterials through the incorporation of carbon nanomaterials, metallic and metallic oxide nanoparticles, titanium dioxide nanotubes, and dendrimers toward the development of electrochemical sensors for the detection of chemical contaminants in the environment and in foods. The development of nanomaterials based sensors facilitated by recent advances is having a major impact on sensor industries for environmental and food safety monitoring. Electrochemical sensing strategies have spurred intense interest in the research community as they have the capacity to serve as ideal sensor technology candidates, having such features as rapid response, robustness, high sensitivity and selectivity, low cost, miniaturization, and the potential for real-time monitoring. Nanomaterials have strong potential for increasing the competitiveness of new sensors for environmental monitoring and food safety applications through the combination of efficacious, yet simple fabrication techniques in the development of critical nanometric interfaces, and the optimization of their design and performance. Opportunities and future considerations for the use of nanomaterials in electrochemical sensors for producing advanced environmental and food sensing devices will also be addressed.

/pdf/nanomaterials-based-electrochemical-detection-of-chemical-343ncmfuec.pdf

Nanomaterials-based electrochemical detection of chemical contaminants

Porous 3D graphene-based hybrid materials (3D GBHMs) are currently attractive nanomaterials employed in the field of energy. Heteroatom-doped 3D graphene and metal, metal oxide, and polymer-decorated 3D graphene with modified electronic and atomic structures provide promising performance as electrode materials in energy storage and conversion. Numerous synthesis methods such as self-assembly, templating, electrochemical deposition, and supercritical CO2, pave the way to mass production of 3D GBHMs in the commercialization of energy devices. This review summarizes recent advances in the fabrication of 3D GBHMs with well-defined architectures such as finely controlled pore sizes, heteroatom doping types and levels. Moreover, current progress toward applications in fuel cells, supercapacitors and batteries employing 3D GBHMs is also highlighted, along with the detailed mechanisms of the enhanced electrochemical performance. Furthermore, current critical issues, challenges and future prospects with respect to applications of 3D GBHMs in practical devices are discussed at the end of this review.

3D graphene-based hybrid materials: synthesis and applications in energy storage and conversion

An electrochemical sensor based on the three-dimensional functionalized graphene for simultaneous determination of hydroquinone and catechol

Cathodic electrochemiluminescence of meso-tetra(4-carboxyphenyl) porphyrin/potassium peroxydisulfate system in aqueous media

Transition metal sulfides as the most prominent candidates with high theoretical capacities; however, serious agglomeration and enormous volumetric variation limit its application in lithium-ion batteries. Herein, a chemical blowing strategy for the synthesis of FeS nanoparticles encapsulated into 3D porous carbon framework via chemical vapor deposition method and subsequent sulfidation process. In the constructed architecture, the monodispersed FeS nanoparticles are fully encapsulated in graphitic carbon, simultaneously, confined in 3D architecture composed of 2D graphitic carbon nanosheets. The unique architecture provides a facilitated transport pathway, enhances electron conductivity and buffers the volumetric expansion of FeS. Consequently, the composite delivers a high reversible capacity of 1084.2 mAh g−1 at 0.1 A g−1, excellent rate capability (723.5 mAh g−1 at 1 A g−1), and outstanding cycling stability (a specific capacity of 848.3 mAh g−1 without decay is achieved at 0.5 A g−1). Therefore, the present work suggests that the novel design of 3D FeS/C material provides a strategy for achieving high-performance anodes in lithium-ion batteries. Uniformly monodispersed FeS nanoparticles confined in 3D interconnected carbon network was synthesized by using chemical vapor deposition method and subsequent sulfidation process. The hybrid electrode exhibits excellent performance with a reversible capacity of 1084.2 mAh g−1 at 0.1 A g−1 as well as outstanding cycling stability performance of 848.3 mAh g−1 at 0.5 A g−1 after 170 cycles.

Monodispersed FeS nanoparticles confined in 3D interconnected carbon nanosheets network as an anode for high-performance lithium-ion batteries

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface-Controlled Reactions for Fast and Stable Lithium-Ion Batteries

Cathodic electrochemiluminescence of tris(2,2′-bipyridine) ruthenium(II) on Ag nanoparticles-modified electrode

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