Article
Chemistry, Analytical
Duc Anh Thai, Nae Yoon Lee
Summary: This study developed a newly synthesized chemical acting as a chemosensor for colorimetric detection of sulfide on paper strips based on the deprotonation mechanism. The chemosensor showed highly selective and fast response to sulfide, with a detection time of 10 seconds. The paper test strip can visually detect as low as 30 mu M sulfide.
ANALYTICAL METHODS
(2021)
Article
Green & Sustainable Science & Technology
Evie L. Papadopoulou, Giulia Biffi, Anitha Senthamizhan, Beatriz Martin-Garcia, Riccardo Carzino, Roman Krahne, Athanassia Athanassiou
Summary: The paper sensor is designed to detect nanomaterials using fluorescence changes of carbon nanodots, allowing for selective detection of different nanomaterials based on their unique photoluminescence quenching mechanisms. The sensor enables easy detection of nanomaterials under UV light and can detect them through direct contact with their dispersions or powders, providing a straightforward method for practical applications.
Article
Engineering, Electrical & Electronic
Zhi Song, Siqi Li, Bingjie Hou, Zihao Cheng, Yanbing Xue, Baojun Chen
Summary: This article presents a new type of paper-based capacitive humidity sensor using interdigitated electrodes (IDEs) and graphene oxide (GO) as the moisture-sensitive material. The sensor achieves high sensitivity and fast response/recovery time through optimizing the IDE structure, parameters of the sensitive GO film, and operating frequency. Preliminary respiratory-monitoring experiments demonstrate the excellent reliability and accuracy of the proposed sensor in recording respiratory rate and depth.
IEEE SENSORS JOURNAL
(2023)
Article
Environmental Sciences
Siew Chun Low, Nur Atiah Binti Azmi, Chyh Shyang Ong, Jit Kang Lim
Summary: This study evaluates the selection and immobilization strategies of sensitive chromophores (dithizone, 1-(2-pyridylazo) 2-naphthol and 4-(2-pyridylazo)-resorcinol) on paper sensors. The results show that the DTz-paper sensor demonstrates a distinctive color change upon reaction with Pb2+ ions, and the color intensity is proportional to the metal concentration. This suggests the potential of the DTz-paper sensor for rapid detection of heavy metal ions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Chemistry, Analytical
Shekher Kummari, Lakshmi R. Panicker, Jagadeeswara Rao Bommi, Sampath Karingula, Venisheety Sunil Kumar, Kuldeep Mahato, Kotagiri Yugender Goud
Summary: Environmental toxic pollutants and pathogens are global issues. Traditional detection methods have drawbacks such as tedious sample preparation and dependence on large instruments. Paper-based biosensors are cost-effective alternatives that improve accessibility to testing, especially in developing countries.
Article
Chemistry, Analytical
Guo Zhao, Yu Shen, Tung Pham, Ying Chen, Mulchandani Ashok
Summary: A paper-based chemiresistive sensor was developed for sensitive detection of As(III) by using a single-walled carbon nanotubes network with electro-deposited gold nanoparticles (AuNPs-SWCNTs). A new sensing strategy based on the electrochemical doping of As(0) on the AuNPs-SWCNTs channel was proposed. The sensor sensitivity was enhanced by optimizing the volume of SWCNTs ink used in the formation of the sensing network and the sweep segment of cyclic voltammetry used for the electrochemical deposition of AuNPs. The as-fabricated chemiresistive sensor can detect As(III) concentration as low as 1.35 x 10(-5) mu M, even lower than the maximum permissible concentration in drinking water defined by the WHO.
ANALYTICA CHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Azmal Huda Chowdhury, Borzooye Jafarizadeh, Nezih Pala, Chunlei Wang
Summary: This study presents a capacitve pressure sensor based on tissue paper, which is simple to produce and cost-effective yet exhibits high linear sensitivity, making it ideal for detecting wrist arterial pulse waveforms.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Manivannan Kalavathi Dhinakaran, Barry Lee Smith, Tirayut Vilaivan, Simon Maher, Thanit Praneenararat
Summary: A fluorescent array based on cyanostilbene was synthesized on a cellulose paper surface to rapidly detect biogenic amines released from spoiled meats. The high-throughput nature of this method revealed highly responsive molecules and offered flexibility in sensing applications. This study provides a robust and cost-effective tool for monitoring meat freshness.
Article
Biophysics
Ze Wang, Xiaolan Ou, Lin Guan, Xingchen Li, Annan Liu, Lei Li, Andrei Zvyagin, Wenrui Qu, Bai Yang, Quan Lin
Summary: Inspired by pomegranate, this study developed a multifunctional nanocomposite wound dressing with fluorescent and photothermal properties, using Au/Ag nanodots as the core and polyvinyl alcohol hydrogel as the shell. The dressing showed excellent antibacterial and photothermal therapy effects on diabetic wounds, and could also function as a smart messenger for determining the appropriate time for dressing replacement.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Xiaoxiao Ma, Shaoxing Zhang, Peikai Zou, Ruya Li, Yubo Fan
Summary: This study proposes a flexible, low-cost, and easy-processing paper-based humidity sensor for sleep respiratory monitoring. It achieved high sensitivity and good repeatability, and demonstrated the ability to distinguish between different respiratory patterns and breathing modes.
Review
Chemistry, Applied
Rohitraj Ray, Anusha Prabhu, Dinesh Prasad, Vijay Kumar Garlapati, Tejraj M. Aminabhavi, Naresh Kumar Mani, Jesus Simal-Gandara
Summary: This review highlights the contributions of paper-based devices in efficient and rapid food adulterants detection, emphasizing the simple strategy and technological advancements for on-site testing. The discussion also focuses on the prospects of paper-based microfluidics technology in food adulterant detection, serving as a valuable tool for interdisciplinary food researchers.
Article
Chemistry, Analytical
M. A. Vargas-Munoz, Julian Morales, Victor Cerda, Laura Ferrer, Edwin Palacio
Summary: A simple and low-cost field-deployable method using paper sensors combined with a 3D-printed portable platform has been developed for simultaneous determination of ammonia and sulfide. The method showed good precision and recovery rates when applied to anaerobic digester and wastewater samples. The advantages of this methodology include high precision, simple paper sensor preparation, and a reusable system.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Nivedita Pan, Neha Bhattacharyya, Amrita Banerjee, Pritam Biswas, Lopamudra Roy, Arka Chatterjee, Rama Bhattacharjee, Soumendra Singh, Saleh A. Ahmed, Arpita Chattopadhyay, Mala Mitra, Samir Kumar Pal
Summary: We report a completely portable colorimetric prototype device for the selective monitoring of lead (Pb) pollution, mainly in air. This device relies on analyzing the colorimetric assays on paper strips by measuring the retroreflective information. Our study found that citrate-functionalized silver nanoparticles (AgNPs) embedded in cellulose paper strips can be used to monitor changes in lead concentration by measuring the LSPR bands in the blue and green regions. This research provides a low-cost field-deployable technique for environmental lead sensing, opening up new perspectives for future advancement in paper-based sensing.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Yan Kan, Jianying Meng, Yuanhao Guo, Xiaoqiang Li, Dekang Gao
Summary: This paper introduces a humidity sensor based on cellulose filter paper, which shows good response in high humidity environments and reversible color change. The sensor benefits from the capillary structure of porous cellulose films and highly hydrophilic material, allowing for applications in respiratory monitoring and movement tracking.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Electrochemistry
Muhammad Waqas, Limin Wang, Yanxing Hui, Fangfang Fan, Youjun Fan, Ghazala Yasmeen, Muhammad Ashraf, Wei Chen
Summary: Transition metal phosphates have received significant attention as effective electrocatalysts due to their chemical stability, physical features, low cost, and exceptional electrocatalytic properties. In this study, a binary metal phosphate heteroarchitecture was designed for the first time, consisting of nickel phosphate nanodots supported on copper phosphate microflowers. The customized structure exhibited excellent electrocatalytic efficacy for glucose sensing, with superior sensitivity, a wide detection range, short response time, and low detection limit.
ELECTROCHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Ana Vieira, Laura Rodriguez-Lorenzo, Isabel B. Leonor, Rui L. Reis, Begona Espina, Marilia Barreiros dos Santos
Summary: This study demonstrates an innovative approach to enhance antibacterial surfaces by incorporating titanium dioxide nanoparticles into microstructured surfaces. The engineered surfaces effectively reduced bacterial colonization through a combination of UVC disinfection and TiO2 photocatalysis. The results suggest that this synergistic strategy holds great potential for various applications in healthcare and biotechnology markets.
ACS APPLIED BIO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Siva Nemala Sankar, Joao Fernandes, Marilia Barreiros dos Santos, Begona Espina, Pedro Alpuim, Ander Garcia Diez, Senentxu Lanceros-Mendez, Lalita Saini, Suvigya Kaushik, Gopinadhan Kalon, Andrea Capasso
Summary: In this study, an efficient and green strategy was proposed to fabricate mu m-thick, graphene-based laminates by liquid phase exfoliation and vacuum filtration. The membranes showed structural and mechanical stability during long-term operation in water, and exhibited size selection and anion-selectivity in ion transport studies. Additionally, the membranes demonstrated high rejection rates and antibacterial properties. Therefore, these green graphene-based membranes offer a viable option for future water management applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biochemical Research Methods
Cristian Suarez-Oubina, Paloma Herbello-Hermelo, Natalia Mallo, Maria Vazquez, Santiago Cabaleiro, Ivone Pinheiro, Laura Rodriguez-Lorenzo, Begona Espina, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: This research focuses on using single-cell inductively coupled plasma-mass spectrometry (scICP-MS) to assess the associations of titanium dioxide nanoparticles (TiO2 NP) and silver nanoparticles (Ag NP) in cell lines derived from aquaculture species. The optimization studies aim to avoid high dissolved background, multi-cell peak coincidence, and possible spectral interferences. The results show that TiO2 NPs mainly interact with the outer cell membranes, while Ag NPs can enter the cells.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Jessica Caldwell, Celine Loussert-Fonta, Gaelle Toullec, Niclas Heidelberg Lyndby, Beat Haenni, Patricia Taladriz-Blanco, Begona Espina, Barbara Rothen-Rutishauser, Alke Petri-Fink
Summary: Many researchers are studying the interaction between microplastics and marine fauna, aiming to understand exposure pathways and concentrations, as well as the impact of such interactions. This study focused on how Cassiopea andromeda jellyfish interacted with microplastics, using different analytical techniques. The results showed that the fluorescent microplastics could be successfully detected and their interaction with the jellyfish was likely influenced by the properties of the microplastics.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Sofia Neto, Ana Vieira, Hugo Oliveira, Begona Espina
Summary: This study successfully established an A. baumannii infection model using tail-injured zebrafish embryos. The model was able to distinguish the most virulent strains from the less virulent ones. Furthermore, using phage therapy, the infection of the most virulent strains was controlled, leading to increased survival rates.
Article
Engineering, Environmental
Tianxing Wang, Soraia P. S. Fernandes, Joana Araujo, Xiaoxi Li, Laura M. Salonen, Begona Espina
Summary: In this study, a covalent organic polymer was designed and synthesized for the efficient adsorption of STX. The prepared material showed fast adsorption of STX within 1 hour and demonstrated good reusability and high recovery rates, making it a potential candidate for the extraction and pre-concentration of STX from aquatic environments.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Elza Fonseca, Maria Vazquez, Laura Rodriguez-Lorenzo, Natalia Mallo, Ivone Pinheiro, Maria Ligia Sousa, Santiago Cabaleiro, Monica Quarato, Miguel Spuch-Calvar, Miguel A. Correa-Duarte, Juan Jose Lopez-Mayan, Mick Mackey, Antonio Moreda, Vitor Vasconcelos, Begona Espina, Alexandre Campos, Mario Jorge Araujo
Summary: In this study, the effects of citrate-coated TiO2 nanoparticles (TiO2 NPs) of two different primary sizes on the liver of flatfish turbot were investigated. The results showed that the abundance of lipid droplets in hepatocytes varied depending on the size of TiO2 NPs, with an increase in turbot exposed to smaller NPs and a depletion with larger NPs. Gene expression related to oxidative and immune responses as well as lipid metabolism was also influenced by TiO2 NPs. These findings emphasize the importance of scrutinizing the risks associated with exposure to NPs with distinct properties in aquatic organisms.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Adrian Sanchez-Visedo, Borja Gallego-Martinez, Luis Jose Royo, Ana Soldado, Marta Valledor, Juan Carlos Campo, Francisco Javier Ferrero, Jose Manuel Costa-Fernandez, Maria Teresa Fernandez-Arguelles
Summary: MicroRNAs (miRNAs), a class of small noncoding RNAs, are considered as novel disease biomarkers. To improve the sensitivity of miRNA detection, an alternative genetic enzyme method is proposed in this study. Multicomponent nucleic acid enzymes (MNAzymes) coupled with DNA-functionalized gold nanoparticles (AuNPs) are used to develop an isothermal signal amplification strategy. This method has been successfully applied for the detection of miR146a in raw cow milk samples.
Article
Chemistry, Analytical
Juan Jose Lopez-Mayan, Blanca Alvarez-Fernandez, Elena Pena-Vazquez, Maria Carmen Barciela-Alonso, Antonio Moreda-Pineiro, Julie Maguire, Mick Mackey, Monica Quarato, Ivone Pinheiro, Begona Espina, Laura Rodriguez-Lorenzo, Pilar Bermejo-Barrera
Summary: A study was conducted to investigate the bioaccumulation of citrate-coated titanium dioxide nanoparticles in red (Palmaria palmata) and green (Ulva sp.) seaweed. The results showed that Ulva sp. had higher titanium concentrations than Palmaria palmata under the same exposure conditions. The titanium concentration in Ulva sp. reached its maximum after 28 days of exposure to 1.0 mgL(-1) of 5 nm TiO(2)NPs. The sizes and concentrations of TiO(2)NPs determined by SP-ICP-MS were similar for both seaweeds, suggesting that the titanium is mainly accumulated in Ulva sp. as ionic titanium or nanoparticles smaller than the limit of detection in size.
Article
Chemistry, Multidisciplinary
Ivone Pinheiro, Monica Quarato, Antonio Moreda-Pineiro, Ana Vieira, Virginie Serin, David Neumeyer, Nicolas Ratel-Ramond, Sebastien Joulie, Alain Claverie, Miguel Spuch-Calvar, Miguel A. Correa-Duarte, Alexandre Campos, Jose Carlos Martins, Pilar Bermejo-Barrera, Marisa P. Sarria, Laura Rodriguez-Lorenzo, Begona Espina
Summary: Commercial ATO nanoparticles are relatively harmless to zebrafish and marine mussels, but they do affect the developmental parameters of zebrafish. Further research is needed on the accumulation of nanoparticles in the human body.
Article
Chemistry, Multidisciplinary
Vanesa Romero, Soraia P. S. Fernandes, Liliana P. L. Goncalves, Orlando Oliveira, Maria Meledina, Karol Strutynski, Manuel Melle-Franco, Yury V. Kolen'ko, Begona Espina, Laura M. Salonen
Summary: A one-step procedure was reported for synthesizing a crystalline magnetic covalent organic framework (COF) composite, which involved the use of a sub-stoichiometric amount of a diamino building block during the COF synthesis. The resulting composite showed no losses in crystallinity or surface area compared to bulk material, and exhibited efficient adsorption of okadaic acid in synthetic seawater. Furthermore, the composite material could be recycled with minor losses in adsorption capacity, presenting a promising approach for cost-effective and efficient seawater biotoxin monitoring using COF composites.
Article
Engineering, Environmental
Jessica Caldwell, Alke Petri-Fink, Celine Loussert-Fonta, Gaelle Toullec, Niclas Heidelberg Lyndby, Beat Haenni, Patricia Taladriz-Blanco, Barbara Rothen-Rutishauser
Summary: Many researchers are studying the interaction between microplastics and marine fauna and working to monitor exposure pathways, concentrations, and their impacts. This study focuses on Cassiopea andromeda jellyfish, which live in (sub-)tropical coastal regions that are potentially contaminated by plastic waste. Fluorescent microplastics were detected using an optimized analytical protocol, and their interaction with the jellyfish was found to be influenced by the properties of the microplastics, such as density and hydrophobicity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Pandiaraja Varatharajan, I. B. Shameem Banu, Mohamad Hafiz Mamat, Nagamalai Vasimalai
Summary: In this study, a BiCoO3@g-C3N4 nanocomposite with excellent supercapacitor properties and low charge transfer resistance was successfully synthesized and characterized. The results showed that BiCoO3@g-C3N4 exhibited high specific capacitance, good cycle retention, and fast redox activity. Furthermore, an asymmetric supercapacitor device using BiCoO3@g-C3N4 as the positive electrode showed high specific capacitance, power density, and energy density.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Analytical
L. G. Valle, B. Santamaria, A. Lavin, M. F. Laguna, L. Rodriguez-Lorenzo, B. Espina, M. Holgado
Summary: In this study, we report the development of a biosensing system based on the Interferometric Optical Detection Method (IODM), using gold nanoparticles as interferometric enhancers to improve the performance of immunoassays. Through experiments and calculations, we demonstrate that the gold nanoparticles act as amplifiers in the IODM and have the potential to be applied in various biological detection applications.
Article
Chemistry, Inorganic & Nuclear
Pandiaraja Varatharajan, I. B. Shameem Banu, Mohamad Hafiz Mamat, Nagamalai Vasimalai
Summary: In this study, a bismuth cobalt oxide combined with graphitic carbon nitride nanocomposite was synthesized using the hydrothermal method. The nanocomposite showed high specific capacitance, excellent cycle retention, fast redox activity, and low charge transfer resistance, making it a promising electrode material for energy storage applications. Furthermore, an asymmetric supercapacitor device composed of the nanocomposite as the positive electrode exhibited good electrochemical performance.
DALTON TRANSACTIONS
(2023)