Article
Chemistry, Physical
Rui Xia, Kangning Zhao, Jie Zheng, Tao Shen, Lei Zhang, Mark Huijben, Johan ten Elshof
Summary: Fast charging performance of electrode materials is crucial for batteries in portable devices and electric vehicles. This study proposes a new theoretical framework that can decouple the impacts of ohmic resistance, reaction rate, and ion diffusion on the fast charging properties of electrodes. The model is successfully validated using cyclic voltammetry data of four typical electrode materials. Surprisingly, it is found that the reaction rate is the limiting factor for the fast charging performance in all materials analyzed. The new model is believed to facilitate electrode design and accelerate the development of the next generations of fast-charging batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Puttipong Pananusorn, Araya Ruengsuk, Andrew Docker, Korawit Khamphaijun, Kitima Sirivibulkovit, Mongkol Sukwattanasinitt, Jonggol Tantirungrotechai, Phoonthawee Saetear, Taweetham Limpanuparb, Thanthapatra Bunchuay
Summary: A novel quinhydrone-type complex between pillar[5]quinone (P[5]Q) and hydroquinone (HQ) is reported, which exhibits high stability and can be used for the selective liquid-liquid extraction and recovery of HQ.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Muhammad Shafa, Iqbal Ahmad, Shahid Hussain, Muhammad Asif, Yi Pan, Rustem Zairov, Asma A. Alothman, Mohamed Ouladsmane, Zahid Ullah, Nabi Ullah, Chen Lai, Uzma Jabeen
Summary: A nanoalloy-based electrochemical sensor for H2O2 detection has been fabricated using chemical reduction methodology. The prepared samples were characterized by X-ray diffraction and scanning electron microscopy. Among all the compositions, Ag-Cu (9:1) nanoalloys showed the best performance in detecting H2O2.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Abdelmadjid Kherrouba, Rafik Bensegueni, Mounia Guergouri, Ahlem-Linda Boulkedid, Mehdi Boutebdja, Mustapha Bencharif
Summary: Two new square-planar nickel (II) complexes were synthesized and characterized, with different electronic absorption spectra. Theoretical calculations using density functional theory were in agreement with experimental results, showing the validity of the synthesized complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Electrochemistry
Abhishek Kumar, Nada Alami-Mejjati, Marcel Bouvet, Rita Meunier-Prest
Summary: The electrooxidation process of gallic acid (GA) in an aqueous medium was reexamined using cyclic voltammetry and spectroelectrochemical studies on a gold electrode. The results revealed that the redox process of GA is an irreversible two-electron process, with the formation of ortho-quinone as the final product. The acidity constant of the ortho-quinone was determined for the first time (pKa = 5.33). The number of exchanged electrons and protons depended on the pH conditions, with (2e, 2H+) exchanged at pH < 4.24 and pH > 5.33, and (2e, 1H+) exchanged at 4.24 < pH < 5.33. The existence of a DISP2 mechanism leading to the formation of ortho-quinone through disproportionation of semiquinone radicals was demonstrated.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
Giddaerappa, Nemakal Manjunatha, Shantharaja, Mirabbos Hojamberdiev, Lokesh Koodlur Sannegowda
Summary: In this study, a novel nitrogen-rich palladium amide bridge hippuric acid phthalocyanine complex (PdTAHAPc) is synthesized and combined with multi-walled carbon nanotubes to prepare a hybrid composite electrode. The hybrid composite electrode exhibits superior specific capacitance and stability in sulfuric acid electrolyte.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Applied
Kyangzi Calderon-Cerquera, Alejandra Parra, Duvalier Madrid-Usuga, Andrea Cabrera-Espinoza, Carlos A. Melo-Luna, John H. Reina, Braulio Insuasty, Alejandro Ortiz
Summary: The novel compounds BDP(Pyr)2 and BDP(Iso)2 show strong interaction in the excited state, generating charged species between BODIPY and the two C-60 units. The electronic interaction is stronger in BDP(Iso)2 than in BDP(Pyr)2, likely due to isoxazoline ring conjugation. Fluorescence lifetime measurements confirm that BDP(Iso)2 performs better even at different solvent polarities.
Article
Materials Science, Multidisciplinary
K. Devendran, A. R. Balu, M. Suganya, G. Vinitha, Z. Delci, M. Karthika, C. Kayathiri, S. Chitra Devi, M. Sriramraj
Summary: Lanthanum doped cadmium oxide (CdO:La) nanoparticles with different La contents (0, 3, 5 and 7 wt%) were synthesized using the sol-gel method. The crystalline degree of CdO depended on the amount of La dopant, resulting in the formation of cauliflower shaped grains. EDS spectra confirmed the presence of La in the doped materials. Increasing La doping improved transparency, and the 5 wt% La-doped sample showed a high transparency of 90% with a maximum band gap of 2.51 eV. La doping also reduced resistivity, with the 5 wt% La-doped CdO sample exhibiting a minimum sheet resistance of 11.8 & OHM;/ and resistivity of 4.26 x 10-4 & OHM;-cm, along with a high figure of merit of 7.56 x 10-4 & OHM;-1. Additionally, the 5 wt% La-doped sample showed a high specific capacitance of 110 F/g, and improved third order nonlinear optical characteristics.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Austen C. Adams, Sauraj Jha, David J. Lary, Jason D. Slinker
Summary: This study evaluates methods for determining electron transfer rates and demonstrates the effectiveness of machine learning in rapidly acquiring this data for widespread applications.
Review
Chemistry, Physical
Omar O'Mari, Valentine I. Vullev
Summary: Electrochemical analysis is easy to carry out but challenging to do correctly due to inherent challenges in data collection and interpretation. This article focuses on the utility of voltammetrically obtained electrochemical potentials for extracting important characteristics of molecular analytes, and provides recommendations for addressing key pending challenges. Improving the reliability of electroanalysis is crucial for advancing modern science and engineering given the wide implications of charge transfer.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Environmental Sciences
Farwa Arshad, Nazish Parveen, Sajid Ali Ansari, Javed Alam Khan, Md Sk Palashuddin
Summary: In this study, nanorod-shaped Mn3O4 supported with amorphous carbon (Mn3O4/AC) was synthesized by the microwave method for supercapacitor application. The as-prepared electrode material exhibited excellent capacitance performance, attributed to the excellent redox behavior of Mn3O4 and the presence of amorphous carbon.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
G. Veeresha, G. Krishnamurthy, M. S. Shivakumar
Summary: This paper describes a facile hydrothermal technique for synthesizing cobalt nanocrystals deposited cerium oxide (Co-CeO2) on reduced graphene oxide (RGO) sheets. The Co-CeO2/RGO composite electrode exhibits excellent electrocatalytic activity, with the phase, morphology, and elemental composition and oxidation states validated by various techniques. The composite material has a large surface area, specific capacitance, and energy density.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Tamas Pajkossy, Maximilian Urs Ceblin, Gabor Meszaros
Summary: The use of dynamic electrochemical impedance spectroscopy (dEIS) was demonstrated in diffusion-controlled electrode reactions. By measuring a number of audio-frequency impedance spectra and cyclic voltammograms, charge transfer rate coefficients were calculated and the advantages of dEIS over traditional impedance measurements were highlighted, including the ability to characterize electrochemical systems in seconds, reducing the risk of contamination or modification of electrode surfaces.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Julia Kroeger, Alberto Jimenez-Solano, Gokcen Savasci, Petra Rovo, Igor Moudrakovski, Kathrin Kuester, Hendrik Schlomberg, Hugo A. Vignolo-Gonzalez, Viola Duppel, Lars Grunenberg, Cem B. Dayan, Metin Sitti, Filip Podjaski, Christian Ochsenfeld, Bettina V. Lotsch
Summary: This study reports the first postsynthetic modification of 2D carbon nitride poly(heptazine imide) using terminal melamine moieties. The covalent attachment of these groups improves the colloidal stability and photocatalytic performance of the catalyst particles.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
K. Y. Yasoda, S. Kumar, M. S. Kumar, K. Ghosh, S. K. Batabyal
Summary: A high surface area of manganese sulfide (MnS) nanoparticles was demonstrated via a simple solution method. The in-situ polymerization of aniline without HCl was achieved with the help of acidic groups on the graphene oxide surface. The addition of graphene oxide (GO) and polyaniline (PANI) improved the specific capacitance and interfacial interactions in the MnS/GO/PANI nanocomposite, making it a promising choice for high-performance supercapacitor applications.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Analytical
Jiahao Lu, Yanan Jiang, Tianyi Xiong, Ping Yu, Wei Jiang, Lanqun Mao
Summary: In this study, a nanofluidic ionic diode was successfully constructed by in situ asymmetric growth of metal-organic frameworks (MOFs) in nanochannels. The nanofluidic device exhibited ionic current rectification (ICR) behavior at different electrolyte concentrations and the rectification ratio could be regulated by visible light illumination. This study provides a reliable method for building a nanofluidic platform for molecular sensing.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Tienan Gao, Cong Xu, Ming-Li Chen, Jian-Hua Wang, Lanqun Mao, Ping Yu
Summary: This study focuses on the relationship between surface charge and dynamic behaviors of particles at the orifice of a nanopipette. It discovers a parameter, angle theta, that can quantify the surface charge of single particles and distinguish gold and silica nanoparticles with different surface charges.
ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Jiahao Lu, Yanan Jiang, Ping Yu, Wei Jiang, Lanqun Mao
Summary: This article provides a systematic overview of light-controlled ion channels and ion pumps, discussing their development and exploring their applications in molecular sensing, water purification, and energy conversion.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Cong Pan, Fei Wu, Junjie Mao, Wenjie Wu, Gang Zhao, Wenliang Ji, Wenjie Ma, Ping Yu, Lanqun Mao
Summary: This study presents a high-performance hydrogen sulfide (H2S) sensor that combines a single-atom catalyst strategy and galvanic redox potentiometry to overcome the issues faced by electrochemical H2S sensors. The sensor displays high selectivity to H2S against physiological interferents and enables real-time accurate quantification of H2S-releasing behavior in the living mouse brain.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Leihou Shao, Xiangyi Gao, Ji Liu, Qizhen Zheng, Yali Li, Ping Yu, Ming Wang, Lanqun Mao
Summary: Pyroptosis is a new type of regulated cell death that has great potential for treating cancers. However, current strategies to regulate cancer cell pyroptosis have limitations. In this study, biodegradable metal-organic frameworks (MOFs) were used to deliver glucose oxidase (GOx) intracellularly, promoting intracellular biocatalysis and selectively inducing cancer cell pyroptosis. The strategy of harnessing biodegradable MOFs for protein delivery and intracellular biocatalysis provides a powerful approach to regulate tumor cell pyroptosis for advanced therapeutic development.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Yifei Pan, Kailin Zhang, Huan Wei, Tianyi Xiong, Ying Liu, Lanqun Mao, Ping Yu
Summary: Iontronic sensors based on ion transport have been used for in vivo neurochemical assay, but the interference on spontaneous neuronal activity has not been addressed. This study used finite element simulation to quantify the electric field distribution of a double-barreled micropipette, and found parameters such as pore size and applied voltage that balanced sensitivity and interference. The double-barreled micropipette is a pH sensor that has successfully been applied to real-time pH sensing in rat brain.
ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Boyang Xie, Tianyi Xiong, Weiqi Li, Tienan Gao, Jianwei Zong, Ying Liu, Ping Yu
Summary: Nanofluidic memristors are memory resistors based on nanoconfined fluidic systems with history-dependent ion conductivity. This article provides a systematic review on the history, main mechanism, and potential application of nanofluidic memristors, offering a prospective view on the design principle of nanofluidic-based memristors. The challenges and possible applications of these ion-based devices are also discussed.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Multidisciplinary Sciences
Xiaoti Yang, Wenjie Wu, Xiling Chen, Fei Wu, Shilong Fan, Ping Yu, Lanqun Mao
Summary: Artificial metalloenzymes are designed to achieve substrate specificity and product selectivity in homogeneous reactions. In this study, we introduced a new protein scaffold, bacterial small laccase, for constructing artificial metalloenzymes that can directly catalyze electrochemical transformations. The resulting artificial metalloenzymes demonstrated efficient catalysis of electrochemical water oxidation and were also applicable to water electrolysis.
Article
Chemistry, Analytical
Huan Wei, Lijuan Li, Yifei Xue, Ping Yu, Lanqun Mao
Summary: Potentiometry based on the galvanic cell mechanism, known as galvanic redox potentiometry (GRP), is a new tool for in vivo neurochemical sensing with high neuronal compatibility and good sensing property. In this study, the stability of the open circuit voltage (E(OC)) in GRP sensing is enhanced by adjusting the redox couple in the indicating electrode. Potassium hexachloroiridate-(IV) (K2IrCl6) shows better chemical stability and produces more stable E(OC) compared to other redox species. Integration with electrophysiology allows for stable neurochemical sensing in vivo.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuming Zhou, Tianyi Xiong, Jiahao Lu, Ping Yu, Yanan Jiang, Fan Xia, Lanqun Mao
Summary: In this study, a self-assembled two-dimensional metal-organic framework (MOF) membrane was found to be an excellent nanofluidic platform for smart regulation of ion transport. The MOF membrane showed high ion gating ratio and stability in light-controlled ion gating, making it suitable for remote light-switching systems. This research may lead to promising applications of MOF membranes in ion sieving, biosensing, and energy conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Fei Wu, Ping Yu, Lanqun Mao
Summary: In vivo electrochemistry is a powerful tool for studying the chemical consequences in neural networks of the brain. Over the past 50 years, this field has undergone a technology revolution and witnessed innovations in electrochemical concepts, principles, methods, and devices. Electrochemical approaches now have a wide range of applications, from measuring neurochemical concentrations to modulating and mimicking brain signals.
Article
Multidisciplinary Sciences
Tianyi Xiong, Changwei Li, Xiulan He, Boyang Xie, Jianwei Zong, Yanan Jiang, Wenjie Ma, Fei Wu, Junjie Fei, Ping Yu, Lanqun Mao
Summary: In this study, the neuromorphic functions of ion channel-based neural systems were successfully accomplished using a polyelectrolyte-confined fluidic memristor (PFM). PFM emulated various electric pulse patterns with low energy consumption and allowed for chemical-regulated electric pulses. The PFM also enabled chemical-electric signal transduction with a single device. Its similarity to ion channels and ease of interfacing with biological systems make PFM a versatile tool for building advanced neuromorphic devices.
Article
Nanoscience & Nanotechnology
Yali Li, Ping Yu, Wenjie Ma, Lanqun Mao
Summary: This research discovers that the use of a mixed electronic-ionic conductive metal-organic framework can significantly lower the driving voltage of electrochemical actuators and provide excellent actuation performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jianwei Zong, Wenjie Wu, Lanqun Mao, Ping Yu
Summary: Identifying the active sites of electrocatalysts is crucial for catalyst design, but remains challenging. This study demonstrates a simple and efficient method using stochastic collision electrochemistry to identify the active sites of electrocatalysts, overcoming the limitations of traditional methods caused by the large geometric area and limited exposure of active sites. This work enriches the methodology for identifying active sites.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jianwei Zong, Wenjie Wu, Lanqun Mao, Ping Yu
Summary: Using stochastic collision electrochemistry as a method, the active sites of electrocatalysts can be identified more effectively. Experimental results demonstrate that different active sites play dominant roles in different reactions.
CHEMICAL COMMUNICATIONS
(2023)
