Article
Chemistry, Analytical
Radhiahtul Raehan Mustafa, Rashidah Sukor, Shimaa Eissa, Ainaa Najihah Shahrom, Nazamid Saari, Siti Mariam Mohd Nor
Summary: An electrochemical immunosensor was developed for sensitive and rapid detection of mitragynine, utilizing MWCNTs/CS nanocomposite as modifier. The sensor showed higher sensitivity (10-fold) than conventional ELISA, with a limit of detection of 0.018 μg/mL and a limit of quantification of 0.06 μg/mL. Detection in spiked urine samples resulted in good recoveries between 70-110%.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Fudan Zhu, Huilan Shi, Cunli Wang, Xian Zhou, Xin Zhang, Fengchun Yang
Summary: A disposable electrochemical sensor based on a bismuth selenide/carboxylic multiwalled carbon nanotube (Bi2Se3@MWNTs-COOH) nanocomposite has been designed for nitrite detection, showing excellent performance with fast electron transfer rate and high electrochemically active surface area. The sensor has a wide detection range of 0.01 mu M - 7.0 mM and a low detection limit of 0.002 mu M, making it an effective analytical tool for monitoring nitrite. This work provides new insights into nitrite detection and encourages exploration of rapid and cost-effective detection methods using nanocomposites and disposable systems.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yamin Fu, Ke Xiao, Xiaohua Zhang, Cuicui Du, Jinhua Chen
Summary: The study developed a peptide cleavage-mediated and environmentally friendly photocurrent polarity switching system for ultrasensitive and highly selective detection of PSA. The sensing platform displayed outstanding analytical performance for PSA with a wide linear response range and a lower detection limit, showing a potential application in biological analysis and medical diagnosis.
ANALYTICAL CHEMISTRY
(2021)
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Polymer Science
Ivonne Quintanilla, Carlos Perello, Francesca Merlo, Antonella Profumo, Claudia Fontas, Enriqueta Antico
Summary: Monitoring organic pollutants in environmental water bodies is vital for controlling contamination levels. This study focuses on the development of functionalised polymeric films for measuring toxic compounds. The films, made from modified cellulose triacetate and multi-walled carbon nanotubes, enable the detection of low levels of selected compounds in water samples. The method is found to be satisfactory in terms of repeatability and detection limits, and it is successfully applied to river water without significant matrix effects for certain compounds.
Article
Energy & Fuels
Yuri Zakharov, Galina Simenyuk, Ekaterina Kachina, Valery Pugachev, Vadim Dodonov, Denis Yakubik, Tatiana Trosnyanskaya, Zinfer Ismagilov
Summary: Nanostructured composites (NSCs) based on multiwalled carbon nanotubes (MWCNTs) filled with individual and mixed Ni/Co hydroxides nanoparticles were prepared, showing a significant increase in electrical capacitance, especially within the 5-10 wt% filler content range. The precipitation process of hydroxides also plays a role in influencing the morphology and capacitance performance of the fillers.
Article
Chemistry, Applied
K. R. Venugopala Mounesh, K. R. Venugopala Reddy, Anup Pandith, Gaber E. Eldesoky, Bhari Mallanna Nagaraja
Summary: This work synthesized a novel nickel phthalocyanine compound and confirmed its structure using spectroscopic-microscopic methods and electrochemical analysis. The synthesized NiTBBTCAPc-MWCNTs showed enhanced electron transferring ability and electrocatalytic activity compared to bare GCE and other composite materials. The sensor exhibited fast response, good stability, and high selectivity towards nitrite. The modified electrode was successfully applied for quantitative detection of nitrite in drinking water and cabbage vegetable samples.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Environmental Sciences
Ifeoluwa O. Awogbindin, Ikenna C. Maduako, Isaac A. Adedara, Solomon E. Owumi, Akinola O. Ajeleti, Olatunde Owoeye, Anita K. Patlolla, Paul B. Tchounwou, Ebenezer O. Farombi
Summary: Studies have shown that exposure to multiwalled carbon nanotubes (MWCNTs) can impair liver and kidney function in rats through oxidative stress and inflammation, while treatment with kolaviron (KV) can mitigate these effects by its anti-inflammatory and antioxidant properties.
ENVIRONMENTAL TOXICOLOGY
(2021)
Article
Chemistry, Analytical
Karolina Pietrzak, Cecylia Wardak
Summary: Carbon nanotubes have been widely used in various scientific fields, including the construction of ion selective electrodes. A study found that the type of carbon nanotubes in a multiwalled carbon nanotubes-ionic liquid nanocomposite affects the parameters of the solid contact nitrate ion-selective electrode. Various methods were used to compare the effects of different types of carbon nanotubes.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Byungcheon Yoo, Ziwei Xu, Feng Ding
Summary: High-pressure carbon monoxide (HiPCO) synthesized single-walled carbon nanotubes (SWCNTs) were heat treated at high temperatures, resulting in an increase in diameter and the formation of double-, triple-, and multi-walled carbon nanotubes (MWCNTs). Most MWCNTs were found to have an odd number of walls, in accordance with the mechanism of SWCNT bundle coalescence.
Article
Nanoscience & Nanotechnology
Daile Zhang, Youliang Ma, Jianghua Zhang, Ting Sun
Summary: A binder-free and flexible delta-MnO2@multiwalled carbon nanotubes on carbon cloth (delta-MnO2@MWCNTs/CC) composite with high electrochemical performance was developed for aqueous magnesium ion batteries (AMIB). The electrode displayed high discharge capacity and capacitance retention, making it a promising candidate for low-cost AMIB systems.
Article
Chemistry, Multidisciplinary
Yang Xu, Weili Shi, Ruguang Li, Zheng Qiao, Jian Fang, Quanlin Yang, Chuanxi Xiong
Summary: The 3D CNT/few layered graphene construct with mesopore structure exhibited high specific surface area and specific capacitance in supercapacitors, showing excellent performance and high capacitance retention after cycles.
Article
Chemistry, Analytical
S. Narouie, G. H. Rounaghi, H. Saravani, M. Shahbakhsh
Summary: This paper introduces a new modifier, MWCNTs-DHB nanolayered composite, for carbon paste electrode modification for detection of phenol. The modified electrode shows linear responses, high selectivity, good repeatability, excellent reproducibility, and acceptable stability. It also demonstrates appreciable recoveries for determination of phenol in tap and river water samples.
Article
Chemistry, Physical
Qiongyuan Zhang, Jiayi Wu, Wuceng Niu, Jianjiang Xue
Summary: This study reports that the PTX-3 biosensor decorated with MWCNTs and AuNWs can achieve ultrasensitive detection of PTX-3 in human serum, with a wide range of detection, high sensitivity, and low detection limits. The stability of gold nanomaterials and the large electroactive surface area of MWCNTs improve the stability and repeatability of the sensor.
Article
Chemistry, Multidisciplinary
Jianwei Wang, Qian Ding, Caihui Bai, Feifei Wang, Shiguo Sun, Yongqian Xu, Hongjuan Li
Summary: The CNTs/CoNiFe-LDH hybrid material was successfully prepared using a one-step hydrothermal approach, which improved the conductivity and surface area of the electrode, leading to enhanced electrochemical performance. This material showed promising application in hybrid supercapacitor electrodes.
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)