4.6 Article

CQDs@NiO: An Efficient Tool for CH4Sensing

期刊

APPLIED SCIENCES-BASEL
卷 10, 期 18, 页码 -

出版社

MDPI
DOI: 10.3390/app10186251

关键词

NiO; carbon quantum dots; methane sensing; moist environments

向作者/读者索取更多资源

Featured Application The composite material made of CQDs on NiO surface can be used as sensing material in CH(4)detection. As show-case a home-made CH(4)sensor has been built, based on the CQDs@NiO. A composite material based on carbon quantum dots (CQDs) and NiO was prepared and tested for methane sensing. The synthesis procedure is simple and foresees the preparation of the CQDs by citric acid pyrolysis and NiO by hydrothermal synthesis. A phase sonication and stirring procedure yielded the composite CQDs@NiO at different loads. The composites were characterized by X-ray diffraction, ultraviolet-visible light (UV-Vis) spectroscopy, SEM microscopy, energy-dispersive spectroscopy (EDS) mapping, and surface area, porosity, and impedance measurements. A gas sensor was built in-house and used to probe the response of the synthesized samples to CH(4)detection, at constant environmental humidity. The CQDs@NiO at 1% weight load displayed excellent performances in terms of gas response both vs. temperature and vs. concentration, whereas higher loads resulted in CQD aggregation and diminished output. Response/recovery times of the 1%CQDs@NiO sample were good, as well as the selectivity and the stability over time and for variable environmental humidity. The estimated limit of detection was 0.1 ppm.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Toxicology

Treatments of a phthalocyanine-based green ink for tattoo removal purposes: generation of toxic fragments and potentially harmful morphologies

Elvira Maria Bauer, Emanuele Vincenzo Scibetta, Daniele Cecchetti, Susanna Piccirillo, Simonetta Antonaroli, Simona Sennato, Marina Cerasa, Pietro Tagliatesta, Marilena Carbone

ARCHIVES OF TOXICOLOGY (2020)

Article Chemistry, Physical

NiO Grained-Flowers and Nanoparticles for Ethanol Sensing

Marilena Carbone, Pietro Tagliatesta

MATERIALS (2020)

Article Chemistry, Multidisciplinary

Chemistry through Tattoo Inks: A Multilevel Approach to a Practice on the Rise for Eliciting Interest in Chemical Education

Domenica Tommasa Donia, Emanuele Vincenzo Scibetta, Pietro Tagliatesta, Marilena Carbone

Summary: By designing a multilevel science project focusing on the chemistry of tattoo inks, within a nationwide effort to enhance student enrollment in scientific disciplines in Italy, immediate connection was established with 16-18 year-old high school students. The project utilized the STEAM methodology, incorporating active lectures and practical experiments, and discussed related issues, concluding with an evaluation through surveys.

JOURNAL OF CHEMICAL EDUCATION (2021)

Article Toxicology

Laser vs. thermal treatments of green pigment PG36: coincidence and toxicity of processes

Elvira Maria Bauer, Daniele Cecchetti, Ettore Guerriero, Steven Nistico, Giulia Germinario, Simona Sennato, Lorenzo Gontrani, Pietro Tagliatesta, Marilena Carbone

Summary: Laser and thermal treatments were carried out on PG36, a green phthalocyanine-based pigment allowed in European countries for tattoo compositions. The study found that different procedures produced different fragment compounds, with pyrolysis potentially generating more hazardous compounds. Additives in PG36 were stable or degraded depending on the treatment, and the morphology of the products varied based on the treatment method.

ARCHIVES OF TOXICOLOGY (2021)

Article Multidisciplinary Sciences

Room Temperature Syntheses of ZnO and Their Structures

Domenica Tommasa Donia, Elvira Maria Bauer, Mauro Missori, Ludovica Roselli, Daniele Cecchetti, Pietro Tagliatesta, Lorenzo Gontrani, Marilena Carbone

Summary: The synthesis of ZnO in an aqueous solvent is best achieved at a reaction and drying temperature of 40 degrees C without the need for additional surfactants or freezing. Lower temperatures result in the formation of Zn(OH)2 or a mixture of Zn(OH)2/ZnO, while higher temperatures lead to larger nanoparticles. The optical properties of the synthesized ZnO show a red shift in the band gap of approximately 0.1 eV.

SYMMETRY-BASEL (2021)

Article Biochemistry & Molecular Biology

Detection of Heavy Metals in Water Using Graphene Oxide Quantum Dots: An Experimental and Theoretical Study

Lorenzo Gontrani, Olivia Pulci, Marilena Carbone, Roberto Pizzoferrato, Paolo Prosposito

Summary: The work investigates the sensitivity of graphene quantum dots in detecting heavy metals in water through ab initio calculations and optical experiments. Different behaviors in the optical response of Cd2+ and Pb2+ are observed, with Cd2+ showing increased emission optical response with concentration while Pb2+ shows quenching. It is suggested that graphene quantum dots could be used as cheap detectors for measuring poisoning ions in water.

MOLECULES (2021)

Article Chemistry, Physical

Functionalization of Gold Nanoparticles with Ru-Porphyrin and Their Selectivity in the Oligomerization of Alkynes

Francesca Limosani, Hynd Remita, Pietro Tagliatesta, Elvira Maria Bauer, Alessandro Leoni, Marilena Carbone

Summary: Gold nanoparticles (AuNPs) were functionalized by ruthenium porphyrins through a sulfur/gold covalent bond using a three-step reaction. The catalyst was characterized by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) to control the binding of ruthenium porphyrin on AuNPs' surface. The catalyst was tested and compared with an analog system not bound to AuNPs in the oligomerization reaction using 1-phenylacetylene as the substrate. The results showed that the catalyst exhibited better catalytic activity compared to the analog system without binding to AuNPs.

MATERIALS (2022)

Article Chemistry, Multidisciplinary

Novel Thienyl DPP derivatives Functionalized with Terminal Electron-Acceptor Groups: Synthesis, Optical Properties and OFET Performance

Sandra Fusco, Mario Barra, Lorenzo Gontrani, Matteo Bonomo, Federico Chianese, Simone Galliano, Roberto Centore, Antonio Cassinese, Marilena Carbone, Antonio Carella

Summary: Three novel diketopyrrolopyrrole (DPP) based small molecules were synthesized and characterized in terms of their chemical-physical, electrochemical and electrical properties. The molecules have a central DPP electron acceptor core symmetrically functionalized with donor bi-thienyl moieties and flanked by three different auxiliary electron-acceptor groups. The molecular structure allows for significant absorption at longer wavelengths and has a narrow optical bandgap. Organic field-effect transistors (OFETs) were fabricated using the DPP dyes as active layers and showed different charge-transport properties depending on the end-functionalization. Additionally, well-balanced ambipolar transistors were achieved by blending the most performant n-type and p-type dyes.

CHEMISTRY-A EUROPEAN JOURNAL (2022)

Article Biochemistry & Molecular Biology

For Asia Market Only: A Green Tattoo Ink between Safety and Regulations

Elvira M. Bauer, Daniele Cecchetti, Ettore Guerriero, Simone Quaranta, Francesca Ripanti, Paolo Postorino, Pietro Tagliatesta, Marilena Carbone

Summary: This study analyzed the composition and safety of green tattoo inks for the European and Asian markets. The results showed that both inks are based on the same pigment, but have different physical-chemical properties and contain different harmful additives. The European ink has a higher content of harmful compounds.

MOLECULES (2022)

Review Biochemistry & Molecular Biology

Recent Advances in the Synthesis of Inorganic Materials Using Environmentally Friendly Media

Lorenzo Gontrani, Pietro Tagliatesta, Domenica Tommasa Donia, Elvira Maria Bauer, Matteo Bonomo, Marilena Carbone

Summary: Deep Eutectic Solvents (DES) have gained significant attention in recent years due to their wide applicability, simple preparation, high biocompatibility, and harmlessness. One valuable application of DES is in the synthesis and modification of inorganic materials, particularly nanoparticles. The inherent structural inhomogeneity of DES leads to a notable templating effect, which has attracted increasing studies to explore the use of these new reaction media for nanomaterial preparation. This review aims to summarize the numerous and recent achievements in this field, presenting examples of the newest mixtures obtained from natural feedstocks and linking them to well-established methods that use classical DES like choline chloride.

MOLECULES (2022)

Article Chemistry, Multidisciplinary

NiO-Based Electronic Flexible Devices

Marilena Carbone

Summary: Personal, portable, and wearable electronics have gained extensive use in daily life, requiring flexible electronic components with high storage capability or continuous power supply. The flexibility and performance of these devices are determined by the material composition and fabrication procedures. This mini-review explores the recent advancements in flexible electronic devices based on the low-cost material NiO, showcasing its potential for future developments in opto-electronic devices.

APPLIED SCIENCES-BASEL (2022)

Article Chemistry, Analytical

Highly Specific Silver Ion Detection by Fluorescent Carbon Quantum Dots

Lorenzo Gontrani, Elvira Maria Bauer, Alessandro Nucara, Pietro Tagliatesta, Marilena Carbone

Summary: In this study, nanometric particles with high specificity for silver cations were prepared by hydrothermal synthesis using citric and folic acid solutions. These particles showed strong fluorescence emission in the violet region when excited at 330 nm and could be selectively quenched by sub-nanomolar concentrations of silver (I) cations.

CHEMOSENSORS (2022)

Article Chemistry, Physical

Syntheses of APTMS-Coated ZnO: An Investigation towards Penconazole Detection

Elvira Maria Bauer, Gabriele Bogliardi, Cosimo Ricci, Daniele Cecchetti, Tilde De Caro, Simona Sennato, Alessandro Nucara, Marilena Carbone

Summary: Extrinsic chemiluminescence is an efficient tool for determining pesticides and fungicides without intrinsic fluorescent signal. In this study, APTMS@ZnO was synthesized and tested as an extrinsic probe for the fungicide penconazole. Different synthetic routes were explored to ensure a green synthesis pathway and a good signal variation for penconazole concentration. The synthesized samples were characterized using various techniques. The chemiluminescence tests showed a good linear response and a low detection limit for penconazole.

MATERIALS (2022)

Article Chemistry, Multidisciplinary

The Addition of Co into CuO-ZnO Oxides Triggers High Antibacterial Activity and Low Cytotoxicity

Elvira Maria Bauer, Alessandro Talone, Patrizia Imperatori, Rossella Briancesco, Lucia Bonadonna, Marilena Carbone

Summary: In this study, a simple two-step method is proposed for the synthesis of mixed oxides to achieve antibacterial nanomaterials. The composition and morphology of the oxides were found to affect their antibacterial properties.

NANOMATERIALS (2023)

Article Chemistry, Physical

CuO Nanoparticles and Microaggregates: An Experimental and Computational Study of Structure and Electronic Properties

Lorenzo Gontrani, Elvira Maria Bauer, Alessandro Talone, Mauro Missori, Patrizia Imperatori, Pietro Tagliatesta, Marilena Carbone

Summary: The report investigates the relationship between synthesis methods and the size and morphology of copper oxide nanoparticles. It is found that hydrothermal synthesis without surfactants leads to spheroidal dandelion-like aggregates, while the addition of surfactants promotes directional growth of nanostructures. The structure and properties of the nanoparticles are studied using powder X-ray diffraction, scanning electron microscopy, and diffuse reflectance spectroscopy. The effect of morphology on electronic properties is evaluated using DRS, and the results are compared with computational models.

MATERIALS (2023)

暂无数据