Article
Engineering, Environmental
Mohamed M. Elsutohy, Behzad Fuladpanjeh-Hojaghan, Edward P. L. Roberts, Milana Trifkovic
Summary: In this study, ratiometric, fluorescent pH-sensitive nanosensors were fabricated and utilized for real-time quantification of fast-dynamic, interfacial pH changes in electrochemical processes. Electrochemically coupled laser scanning confocal microscope (EC-LSCM) was used to detect spatio-temporal pH changes during the electrocoagulation treatment of oil-sands-produced water. The operando visualization of interfacial pH provided new insights into electrode processes and offered a powerful pathway for optimizing operating conditions and enhancing the efficiency of various electrochemical processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Isuru E. Gunathilaka, Jennifer M. Pringle, Luke A. O'Dell
Summary: Devices that can harvest heat to generate electricity are being intensively studied for sustainable energy production, and researchers are investigating the mechanism of thermo-electrochemical cells through operando magnetic resonance imaging to reveal their internal processes and corresponding performance.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Huaijia Xin, Hang Wang, Wei Zhang, Yu Chen, Qinghua Ji, Gong Zhang, Huijuan Liu, Andre D. Taylor, Jiuhui Qu
Summary: In this study, an in operando visualization method combined with a microfabricated electrochemical cell and a laser scanning confocal microscope is used to observe high-resolution and fast-response interfacial processes at the electrode-solution interface. The potential-induced formation and transformation of the Nernst diffusion layer are reported, indicating that pulsed voltage dynamically perturbs the interface and promotes ion diffusion. This method provides additional insights into developing dynamic manipulation methods for controlling electrochemical processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biochemical Research Methods
Pranab Chandra Saha, Rabi Sankar Das, Shreya Das, Nayim Sepay, Tanima Chatterjee, Ayan Mukherjee, Tapas Bera, Samiran Kar, Maitree Bhattacharyya, Arunima Sengupta, Samit Guha
Summary: Here, we design a water-soluble NIR fluorescent unsymmetrical Cy-5-Mal/TPP+ with a lipophilic cationic TPP+ subunit, which selectively targets and accumulates in live-cell inner mitochondrial matrix. The maleimide residue of the probe undergoes faster and site-specific covalent attachment with the exposed Cys residue of mitochondrion-specific proteins. This dual targeting approach enables long-term live-cell mitochondrial imaging and improves real-time tracking of mitochondria with multicolor imaging applications.
BIOCONJUGATE CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Thomas Herisson de Beauvoir, Pierre-Louis Taberna, Patrice Simon, Claude Estournes
Summary: This paper presents the application of in situ impedance analysis in the Cold Sintering Process (CSP), specifically focusing on the influence of acetic acid on the sintering of ZnO and the resulting ceramics. The results demonstrate that this in situ characterization technique has the potential to be applied to a wide range of materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Francesca Piazzolla, Vincent Mercier, Lea Assies, Naomi Sakai, Aurelien Roux, Stefan Matile
Summary: Researchers have developed a rational strategy to target early endosomes using a substituted benzylamine with a higher pKa value as the head group of flipper probes. This allows for preserved mechanosensitivity and can be used to elucidate the mechanics of endocytosis in biology.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Automation & Control Systems
Prince Kumar Rai, Vishav Kant, Rakesh Kumar Sharma, Ankur Gupta
Summary: The study aims to treat textile wastewater through an ultrasonic-assisted electrochemical process and optimize the parameters. The actual removal efficiencies of color, COD, and turbidity were found to be 97%, 66%, and 79% respectively at the optimal operating conditions. The statistical modeling validates that the artificial neural network model outperforms the response surface methodology model in predicting the removal efficiencies of color, COD, and turbidity.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Review
Chemistry, Inorganic & Nuclear
Jingting Zhan, Wenhui Song, Enxiang Ge, Lixuan Dai, Weiying Lin
Summary: Reversible fluorescent probes have been widely used in biological research due to their ability to observe dynamic changes of biomolecules in real-time. This review categorizes reversible fluorescent probes into six groups based on the principles of reversible reactions and focuses on their interactions with physiological compounds and small molecule compounds or microenvironments. Representative examples of reversible processes, including complex reactions, addition reactions, redox reactions, and spiral cyclization, are reviewed to demonstrate the potential of reversible fluorescent probes for visualizing intracellular dynamic changes. Furthermore, the challenges and future directions of utilizing reversible fluorescent probes in biological applications are discussed.
COORDINATION CHEMISTRY REVIEWS
(2023)
Review
Chemistry, Inorganic & Nuclear
Weijie Chen, Xiaoxie Ma, Huijuan Chen, Sheng Hua Liu, Jun Yin
Summary: Fluorescent probes play critical roles in monitoring the dynamic changes of pH and alkali metal ions, providing a portable means for real-time determination and clinical diagnosis. Over the recent years, numerous fluorescent probes have been developed and applied extensively in living systems.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Ying Gao, Yulu Hu, Qimeng Liu, Xiaokang Li, Xinming Li, Chu-Young Kim, Tony D. James, Jian Li, Xi Chen, Yuan Guo
Summary: The newly designed fluorescent probes for tracking cellular senescence and tissue aging have improved accuracy and discrimination by incorporating a second dimension of lysosomal pH. This unique design enables precise identification of SA-beta-gal and cancer-associated beta-gal, providing a new tool for studying cellular senescence. The crystal structures of a model enzyme complexed with each probe revealed the structural basis for probe recognition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Shuang Chao, Pei Huang, Ziyan Shen, Yuxin Pei, Yinghua Lv, Yuchao Lu, Zhichao Pei
Summary: This article presents a multifunctional nanodrug delivery system for targeted delivery and real-time monitoring of nonfluorescent drugs, which is one of the most important topics in cancer therapy. A novel supramolecular fluorescent probe was constructed to monitor the delivery of nonfluorescent drug gemcitabine (GEM) to cancer cells. The nanodrug delivery system exhibits excellent capabilities for targeted drug delivery and real-time monitoring of nonfluorescent drug release.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Manon Guille-Collignon, Jerome Delacotte, Frederic Lemaitre, Eric Labbe, Olivier Buriez
Summary: Recent works focusing on the modulation of organic fluorescent or fluorogenic molecules by electrochemistry highlight the smart use of known molecules, the design of new ones, and the development of instrumentation providing molecular-level time- and space-resolved information.
Article
Biophysics
Ying Yang, Sanjun Fan, James A. Webb, Yuanqing Ma, Jesse Goyette, Xueqian Chen, Katharina Gaus, Richard D. Tilley, Justin Gooding
Summary: This study presents an electrochemical approach to reversible fluorescence switching of enhanced green fluorescent proteins (EGFP) on indium tin oxide coated glass. The method allows efficient switching between bright (ON) and dim (OFF) states at the single molecule level. The electrochemical fluorescence switching is fast, reversible, and can be incorporated into advanced fluorescence microscopy.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Gerald Gourdin, Vicky Doan-Nguyen
Summary: Correlating material characterization information with battery performance is crucial for the development of advanced batteries. In situ/operando characterization and specially designed cells are effective in achieving this goal, but additional analytical techniques are needed to gain a comprehensive understanding. There is an opportunity to enhance the usefulness of these devices by incorporating near-simultaneous, multimodal capabilities to advance the development of electrochemical energy storage materials.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Chemistry, Physical
Jean-Luc Trompette, Jean-Francois Lahitte
Summary: The study found that the influence of anions on the faradaic efficiency of aluminum oxidation during electrocoagulation is related to the nature of the cation of the supporting electrolyte. Different types of anions lead to different faradaic efficiencies, while different properties of cations affect the treatment efficiency of colloidal samples.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Chemical
Mohammad Rahimi, Asghar Molaei Dehkordi, Hussein Gharibi, Edward P. L. Roberts
Summary: The novel magnetic flowable electrode (MFE) approach enhances the performance of redox flow batteries by creating a high active surface area electrode using magnetic nanomaterials without a complex structure. The MFE exhibits superior electrochemical activity and stability compared to conventional stationary carbon felt electrodes, resulting in lower cell impedances, pump losses, and higher battery efficiencies. This design opens new opportunities for next-generation RFB systems and can be applied in various flow battery chemistries.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Electrochemistry
Mohammad Rahimi, Asghar Molaei Dehkordi, Edward P. L. Roberts
Summary: This article demonstrates the novel concept of using magnetic nanofluidic electrolyte for redox flow batteries for the first time. The stable magnetic nanofluidic electrolytes were prepared by dispersing magnetic modified multiwalled carbon nanotubes in the positive electrolyte, leading to enhanced battery performance. The magnetic nanofluidic electrolyte showed higher peak current densities and improved energy efficiency, with stable cycling performance over 200 cycles.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Ashutosh K. Singh, Maedeh Pahlevaninezhad, Nael Yasri, Edward P. L. Roberts
Summary: The charge-discharge operation of vanadium redox flow batteries leads to electrode degradation, affecting performance and efficiency. The study shows that electrode degradation is more pronounced in the negative electrode, with differences in mechanism between positive and negative electrodes. Analysis of Raman mapping and X-ray photoelectron spectroscopy reveals changes in surface oxygen functional groups after degradation, indicating differences in degradation mechanism between the two electrodes.
Article
Chemistry, Physical
Nivedita Kulkarni, Jason I. S. Cho, Rhodri Jervis, Edward P. L. Roberts, Iacoviello Francesco, Matthew D. R. Kok, Paul R. Shearing, Dan J. L. Brett
Summary: This study uses X-ray CT to characterize the compressed MEA and finds that non-uniform compression affects the localized current distribution and water transport in fuel cells. Increased compression has little effect on the performance in the activation region, but significantly affects the performance in the mass transport region, promoting cell flooding.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Nael G. Yasri, Markus Ingelsson, Michael Nightingale, Aprami Jaggi, Michael Dejak, Katerina Kryst, Thomas B. P. Oldenburg, Edward P. L. Roberts
Summary: One of the main challenges for the implementation of electrocoagulation (EC) in water treatment is fouling and passivation of the electrodes. This study investigates the process of fouling mitigation by polarity reversal during EC treatment. The research found that shortening the polarity period can reduce electrode fouling and lead to the formation of a soft powdery fouling layer that is easily removed.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Niloo Misaghian, Mehrez Agnaou, Mohammad Amin Sadeghi, Hamed Fathiannasab, Isma Hadji, Edward Roberts, Jeff Gostick
Summary: This study develops a deep learning framework to accurately predict the diffusive conductance in porous media by analyzing 3D images of pore regions extracted from tomograms. The results demonstrate high accuracy and significantly improved prediction speed.
COMPUTERS & GEOSCIENCES
(2022)
Article
Chemistry, Physical
Maedeh Pahlevaninezhad, Majid Pahlevani, Edward P. L. Roberts
Summary: Impurities in vanadium redox flow batteries have significant effects on battery performance. Mn2+ ions have a negligible impact, while Al3+ and Fe2+ ions severely affect battery performance and durability. Fe2+ decreases discharge capacity by 36%, while Al3+ forms alumina-containing precipitate on the electrodes, leading to a severe decline in battery performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Public, Environmental & Occupational Health
Kevin A. Vos, Paul M. K. Gordon, Belinda Heyne
Summary: The study validates the effectiveness of methylene blue combined with sunlight exposure as a robust, fast, and low-cost decontamination method for personal protective equipment (PPE) using a mouse hepatitis virus as a SARS-CoV-2 surrogate.
AMERICAN JOURNAL OF INFECTION CONTROL
(2022)
Editorial Material
Electrochemistry
Ignasi Sires, Manuel A. Rodrigo, Maria Gomez-Mingot, Edward P. L. Roberts
Summary: The Meeting of the Electrochemistry Group of the Spanish Royal Society of Chemistry is an annual event that has been held since the late 1970s. Due to the economic crisis in Spain, many electrochemists trained in Spain have emigrated to other countries and now lead important research groups. Therefore, this year's meeting was held in Paris, France, to bring together all electrochemists trained in Spain.
Article
Chemistry, Physical
Connor R. Bourgonje, Belinda Heyne, Max Anikovskiy
Summary: Carbon-based quantum dots (QDs) are a new family of luminescent nanomaterials with intriguing emission properties. This study presents a facile one-pot synthesis method for red emissive QDs using citric acid and formamide as precursors. The photophysical properties and structural peculiarities of these QDs were investigated.
Article
Engineering, Environmental
Mohamed M. Elsutohy, Behzad Fuladpanjeh-Hojaghan, Edward P. L. Roberts, Milana Trifkovic
Summary: In this study, ratiometric, fluorescent pH-sensitive nanosensors were fabricated and utilized for real-time quantification of fast-dynamic, interfacial pH changes in electrochemical processes. Electrochemically coupled laser scanning confocal microscope (EC-LSCM) was used to detect spatio-temporal pH changes during the electrocoagulation treatment of oil-sands-produced water. The operando visualization of interfacial pH provided new insights into electrode processes and offered a powerful pathway for optimizing operating conditions and enhancing the efficiency of various electrochemical processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Daniel Guerra Diaz, Nory Marino-Ocampo, Vladimir Kabanov, Belinda Heyne, Felipe Andrade-Villalobos, Angelica Fierro, Denis Fuentealba
Summary: In this study, it was found that acyclic cucurbituril-like containers can be used as supramolecular hosts to control the photophysical properties of photosensitizers, including singlet oxygen generation. Thermodynamic and photophysical studies showed that these acyclic containers have better binding affinities for photosensitizers and superior control over singlet oxygen generation compared to benchmark macrocycles. These systems have great potential for novel applications in photocatalysis, synthesis, and biomedical fields due to their excellent water solubility and biocompatibility.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Maedeh Pahlevaninezhad, Elizabeth Esther Miller, Lixin Yang, Lauren Sarah Prophet, Ashutosh Singh, Thomas Storwick, Majid Pahlevani, Michael A. Pope, Edward P. L. Roberts
Summary: The use of ultrathin graphene coating on Nafion membranes significantly improves the performance of vanadium redox flow batteries, leading to higher energy efficiency (increased by 13%), power density (by 67%), and discharge capacity (by 17.5%) over 100 cycles.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Mudasar Mahmood, Nael Yasri, Behzad Fuladpanjeh-Hojaghan, Edward P. L. Roberts
Summary: This study investigated the removal of silica and hardness in oil-sands produced water using continuous electrocoagulation. The research examined the effects of operating parameters such as charge loading, flow rate, current density, and polarity reversal period. The results showed that the removal of silica and hardness increased with charge loading, while flow rate had a slight impact on silica removal. The study also found that aluminum electrodes achieved higher contaminant removal while consuming less electrode material and energy compared to iron electrodes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)