Article
Biochemistry & Molecular Biology
Seokwon Lee, Seokhun Kwon, Kangmin Kim, Hyunil Kang, Jang Myoun Ko, Wonseok Choi
Summary: Carbon nanowall (CNW) and carbon nanotube (CNT) were prepared as anode materials for lithium-ion batteries using different chemical methods on copper foil. Through Raman analysis and electrochemical testing, it was found that the composite material with CNW and CNT exhibited superior performance.
Article
Chemistry, Analytical
Mitsuhiro Seki, Ryotaro Wada, Hitoshi Muguruma
Summary: This study investigates the intramolecular cyclization reactions of catecholamines in the ECE process, revealing that the cyclization rate is pH-dependent and follows a specific order for different types of catecholamines. The electrochemical behavior is verified by analyzing the change in cathodic peak intensity due to the reduction of catecholamine-o-quinone. This work contributes to a deeper understanding of catecholamines and the development of novel strategies for electrochemical sensing.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Rahul B. Pujari, Abhishek C. Lokhande, Abhijeet R. Shelke, Shital B. Kale, Dong-Weon Lee, Chandrakant D. Lokhande
Summary: In this study, crystalline, porous, and nanostructured MnS2 and MnS2/carbon nanotube electrodes were prepared using dip dry and successive ionic layer adsorption and reaction (SILAR) methods at room temperature. MnS2/CNT exhibited superior charge storage performance in Na2SO4 electrolyte, showing a high specific capacitance and excellent capacitance retention for continuous charge-discharge cycles. The improvement in electrochemical charge storage of MnS2/CNT was attributed to reduced electron transfer path and low equivalent series resistance (ESR) in Na2SO4.
SOLID STATE SCIENCES
(2021)
Article
Chemistry, Physical
Iurii V. Panasenko, Mikhail O. Bulavskiy, Anna A. Iurchenkova, Yenanny Aguilar-Martinez, Fedor S. Fedorov, Ekaterina O. Fedorovskaya, Bjorn Mikladal, Tanja Kallio, Albert G. Nasibulin
Summary: Advancements in supercapacitor performance are driven by both material design and device architecture adjustments. This study focuses on designing unique dead-weight free supercapacitors based on PANI electrochemically deposited on free-standing SWCNT films. The research shows that thin free-standing films of SWCNTs with deposited PANI are less prone to self-discharge, enabling higher gravimetric capacitance values.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Vasuki Durairaj, Panpan Li, Touko Liljestrom, Niklas Wester, Jarkko Etula, Ilona Leppanen, Yanling Ge, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: Four types of nanocellulosic materials with different functional groups were used to disperse multiwalled carbon nanotubes, resulting in composite electrodes with excellent stability and electrochemical properties in different electrolytes. Anionic fibrillar nanocellulosic composites showed strong electrostatic and physical enrichment effects, while denser crystalline composites did not exhibit such behavior. This study provides insights for developing customizable nanocellulose/carbon nanomaterial hybrid platforms for various electrochemical applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Doo San Kim, Yun Jong Jang, Ye Eun Kim, Hong Seong Gil, Hee Ju Kim, You Jin Ji, Hyung Yong Kim, In Ho Kim, Myoung Kwan Chae, Jong Chul Park, Geun Young Yeom
Summary: In this study, a dual exhaust system was implemented in a reactive ion beam etcher (RIBE) to control the radical flux relative to ion flux during the etching process. The additional exhausting of radicals through the inductively coupled plasma (ICP) source chamber decreased both the ICP source chamber pressure and the ratio of radical flux to ion flux. This control of the radical flux is believed to be beneficial for anisotropic etching of nanoscale features in the next generation RIBE.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Sania Bibi, Muhammad Iqbal Zaman, Abdul Niaz, Muhammad Tariq, Shahan Zeb Khan, Asma Zulfiqar, Abdur Rahim, Saleem Jan
Summary: In this study, a simple and sensitive voltammetric method for the determination of iodide (I-) using chitosan modified multiwall carbon nanotube paste electrode (chit-MWCNTPE) is reported. The chit-MWCNTPE showed a pronounced response towards I- oxidation with a peak potential at 0.69 V vs SCE. The method is highly selective for I- detection in the presence of various interfering ions, and has been successfully applied for the determination of I- in urine samples. The developed method offers high selectivity for I- detection at comparably low potential, as well as satisfactory LOD and linear range.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Netsirin Gissawong, Supalax Srijaranai, Suwat Nanan, Kanit Mukdasai, Pikaned Uppachai, Norio Teshima, Siriboon Mukdasai
Summary: In this study, a highly sensitive electrochemical sensor was fabricated for the detection of methyl parathion. The sensor showed low detection limit and high electrochemical sensitivity, and was successfully applied for the detection of methyl parathion in vegetables and fruits.
Article
Chemistry, Multidisciplinary
Pemmatte A. Pushpanjali, Jamballi G. Manjunatha, Nagarajappa Hareesha, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: An inexpensive and efficient sensor was developed for the electrochemical analysis of cetirizine (CTZ). The active sites on the carbon nanotube paste electrode surface were improved by electropolymerization of poly(Glutamine). The modified electrode showed enhanced electrochemical response and was successfully applied to determine CTZ in tablet and human urine samples.
Article
Chemistry, Multidisciplinary
Hareesha Nagarajappa, Jamballi G. Manjunatha, Abdullah A. Al-Kahtani, Ammar M. Tighezza, Narges Ataollahi
Summary: The bare carbon nanotube paste electrode (BCNTPE) can be chemically modified for selective determination of riboflavin (RF) in the presence of dopamine (DA). A poly(titan yellow) modified carbon nanotubes paste electrode (PTYMCNTPE) was constructed using a simple and eco-friendly procedure and showed high electrocatalytic activity for the redox reaction of RF. The proposed sensor has great potential for the determination of RF in pharmaceutical samples.
Article
Chemistry, Physical
Yuan Guo, Shixin Wang, Xianfeng Du, Shuaizhong Liang, Shan Huang, Shengjun Peng, Yuehong Xie, Mingbo Ma, Lilong Xiong
Summary: Energy storage technology is crucial for a clean and sustainable energy supply. This study demonstrates a promising strategy for developing new energy storage devices with high energy and power density by using laser etching to obtain spatial multilayer VCNTs electrode nano-templates. The MIM capacitors constructed in this way have high planar capacity density, low leakage characteristic, and excellent performance stability.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Analytical
Hiyo Fujiki, Kazuma Tobase, Hitoshi Muguruma
Summary: This study demonstrated the electrochemical detection of procyanidins in peanut skin using a carbon nanotube electrode. The use of CNT electrodes for procyanidin sensing showed promising results due to their high conductivity, catalytic ability, and special geometry. The study also showed that the intensity of the anodic peaks was proportional to the concentration of procyanidin, regardless of its type. The estimated amount of procyanidins in the peanut skin using CV was similar to that estimated using HPLC-MS. This research may contribute to the utilization of peanut skin in animal food, drugs, and supplementation.
ANALYTICAL SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Seunghwan Lee, Hye-Mi Kim, GeonHo Baek, Jin-Seong Park
Summary: In the field of semiconductor production, as the technology node of devices becomes smaller, area selective deposition (ASD) has become a promising technique for addressing overlay or self-alignment issues. Utilizing molecular layer deposition (MLD) for conformal deposition in ASD can effectively address the limitations of traditional materials and processes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Rudolf Kiefer, Daniel Georg Weis, Bharath Kumar Velmurugan, Tarmo Tamm, Gerald Urban
Summary: In this study, the ion transport and effects of high synthesis potential on conductive polymer actuators are investigated, revealing the impact of synthesis potential on the activity and structure of the actuator. EQCM analysis allows for the determination of appropriate potential windows for increased control over devices.
Article
Chemistry, Analytical
O. V. Sreejith, M. S. Indu, Murugan Ramaswamy
Summary: Lithium titanate (Li4Ti5O12) anode materials are widely popular due to their exceptional structural properties, and research on elemental doping and surface coating has shown promising results in enhancing their performance in lithium-ion batteries, such as reducing cell impedance, increasing electrode lithium-ion diffusion coefficient, and improving specific capacity.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biophysics
Xiaoqiang Liu, Rui Yan, Jiamei Zhang, Jie Zhu, Danny K. Y. Wong
BIOSENSORS & BIOELECTRONICS
(2015)
Article
Engineering, Environmental
Md. Mominul Haque, Warren T. Smith, Danny K. Y. Wong
JOURNAL OF HAZARDOUS MATERIALS
(2015)
Article
Chemistry, Analytical
Xiaoqiang Liu, Jie Zhu, Xiaohe Huo, Rui Yan, Danny K. Y. Wong
ANALYTICA CHIMICA ACTA
(2016)
Review
Chemistry, Analytical
Xiaohe Huo, Xiaoqiang Liu, Jin Liu, Preethi Sukumaran, Subbiah Alwarappan, Danny K. Y. Wong
Article
Electrochemistry
Shajahan Siraj, Christopher R. McRae, Danny K. Y. Wong
ELECTROCHEMISTRY COMMUNICATIONS
(2016)
Article
Materials Science, Multidisciplinary
Daoli Zhao, Tingting Wang, Xuefei Guo, Julia Kuhlmann, Amos Doepke, Zhongyun Dong, Vesselin N. Shanov, William R. Heineman
Article
Chemistry, Analytical
Benjamin L. Hanssen, Shajahan Siraj, Danny K. Y. Wong
REVIEWS IN ANALYTICAL CHEMISTRY
(2016)
Review
Electrochemistry
Shaneel Chandra, Shajahan Siraj, Danny K. Y. Wong
Article
Biophysics
Xiaoqiang Liu, Peipei Liu, Yunfei Tang, Liwei Yang, Lele Li, Zhichong Qi, Deliang Li, Danny K. Y. Wong
BIOSENSORS & BIOELECTRONICS
(2018)
Article
Multidisciplinary Sciences
Amos Doepke, Robert P. Streicher
Summary: A system to differentiate and quantify liquid and headspace vapor leaks from closed system drug transfer devices is proposed, which uses a test solution with two VOCs and SIFT-MS to detect VOCs. The method allows for source apportionment of leaked material and has a limit of leak detection using SIFT-MS at 24 mu L of headspace vapor and 0.14 mu L of test liquid.
Article
Environmental Sciences
Angela L. Stastny, Amos Doepke, Robert P. Streicher
Summary: A method for measuring peracetic acid vapors in air using impinger sampling and field-portable colorimetric analysis is presented. The method measures the capture efficiency of aqueous media in glass and plastic impingers, and uses an N,N-diethyl-p-phenylenediamine colorimetric method with a field-portable spectrometer for measuring peracetic acid. The method allows for easy and rapid in-field measurement and is suitable for evaluating occupational exposure to peracetic acid.
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
(2022)
Article
Chemistry, Analytical
Emily G. Westbrook, Amos Doepke, Robert P. Streicher
Summary: Based on experimental data, propylene glycol methyl ether may meet many important criteria as a suitable surrogate for testing Closed System Drug-Transfer Devices, but there are still some challenges in practical application.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Amos Doepke, Angela L. Stastny, Robert P. Streicher
Summary: The system developed can generate stable atmospheres with various PAA concentrations, maintaining controlled flow rate, temperature, and humidity, resulting in less than 3% relative standard deviation of PAA concentrations over time.
ANALYTICAL METHODS
(2021)
Article
Public, Environmental & Occupational Health
Amie E. Norton, Amos Doepke, Fariba Nourian, William B. Connick, Kenneth K. Brown
JOURNAL OF CHEMICAL HEALTH & SAFETY
(2018)
Article
Chemistry, Analytical
Peipei Liu, Xiaohe Huo, Yunfei Tang, Jun Xu, Xiaoqiang Liu, Danny K. Y. Wong
ANALYTICA CHIMICA ACTA
(2017)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)