Article
Chemistry, Analytical
Leyla Gidi, Jessica Honores, Jose Ibarra, Maria Jesus Aguirre, Roxana Arce, Galo Ramirez
Summary: In this study, the determination of gallic acid was conducted using surface-renewable carbon paste electrodes fabricated with multi-walled carbon nanotubes (MWCNT) and a mixture of N-octylpyridinium hexafluorophosphate (OPyPF6) ionic liquid with mineral oil (MO) as binder. The system exhibited remarkable amperometric sensor characteristics and improved electronic transfer. The electroanalytical study demonstrated a linear range of 4.98 +/- 0.25 to 74.1 +/- 2.2 μmol L-1 for gallic acid, with a detection limit of 2.70 +/- 0.08 μmol L-1 (S/N=3) and a sensitivity of 0.029 μA μmol(-1) L.
Article
Chemistry, Analytical
K. Chetankumar, B. E. Kumara Swamy, S. C. Sharma
Summary: In this study, a SAF amplified electrochemical sensor was developed for the quantification of multiple biomolecules, showing good sensitivity and selectivity. The modified electrode, created by electropolymerization of SAF on BCPE, exhibited adsorption and diffusion controlled phenomena. Practical sample analysis using the developed electrode yielded satisfactory results with high consistency.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
M. M. Charithra, J. G. Manjunatha
Summary: A novel voltammetric sensor for detecting Adrenaline was developed and tested in this study, showing enhanced sensing ability compared to traditional methods. The sensor demonstrated high selectivity, reproducibility, and an excellent antifouling property, making it a promising candidate for electrochemical sensing applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Mohsin Amin, Badr M. M. Abdullah, Stephen R. R. Wylie, Samuel J. J. Rowley-Neale, Craig E. E. Banks, Kathryn A. A. Whitehead
Summary: This study developed a MWCNT-based enzymatic biosensor for the voltammetric detection of cadaverine. The biosensor exhibited high sensitivity and linear concentration dependence, and it was also effective when tested in artificial saliva.
Article
Biochemistry & Molecular Biology
Xiaopeng Hou, Qiongyi Cheng, Hui Wang
Summary: A self-cleaning paper-based microfluidic biosensor was developed using hydrophobic paper decorated with polymeric octadecyl trichlorosilane. The biosensor showed improved performance and could effectively measure the concentration of copper ions in livestock feed and manure.
BIOELECTROCHEMISTRY
(2024)
Article
Chemistry, Analytical
Chia-Liang Sun, Shun-Yi Lai, Kun-Ju Tsai, Jian Wang, Jigang Zhou, Han-Yi Chen
Summary: This article demonstrates the synthesis of nanoporous core-shell structured multi-walled carbon nanotube-graphene oxide nanoribbons (NP-MWCNT@GONRs) and their electrochemical applications to biosensors. The NP-MWCNT@GONRs exhibit a hierarchical micro/mesoporous structure and a high surface area. Modified glassy carbon electrodes (GCEs) with NP-MWCNT@GONR show high sensitivity and low limits of detection, making them promising electrodes for biosensors.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Busra Kaynar, Gokce Ozturk, Dilek Kul
Summary: The electrochemical properties of quetiapine fumarate were studied using a multi-walled carbon nanotube modified electrode. The optimal concentration of multi-walled carbon nanotubes was determined. The oxidation process of quetiapine fumarate was found to be irreversible and controlled by adsorption. The linear ranges and detection limits for differential pulse stripping voltammetry and square-wave stripping voltammetry were determined. The methods were successfully applied for the analysis of quetiapine fumarate tablets. The groups responsible for the oxidation reaction of quetiapine fumarate were investigated using model substances.
Article
Chemistry, Analytical
Aysu Arman, Sener Saglam, Aysem Uzer, Resat Apak
Summary: The study presented a sensitive detection method for nitroaromatic explosives using a GC/MWCNTs/PEI electrode coated with gold nanoparticles. The method successfully detected TNT, DNT, 2,4-DNP, PA, and tetryl in a linear range, with detection limits ranging from 15 μg L-1 to 135 μg L-1. This method was also validated against the reference LC-MS method for analyzing explosives in soil samples.
Article
Biochemical Research Methods
Fuchun Si, Zenghui Liu, Jinge Li, Huaixia Yang, Yanju Liu, Jinming Kong
Summary: An electrochemical detection strategy for exosomes was established based on DNA/ferrocene-modified single-walled carbon nanotube complex. The method showed high sensitivity and good selectivity, providing a potential platform for early diagnosis and biomedical applications.
ANALYTICAL BIOCHEMISTRY
(2023)
Article
Environmental Sciences
S. P. Sreekanth, Abdullah Alodhayb, Abdulaziz K. Assaifan, Khalid Eidah Alzahrani, Muthumareeswaran Muthuramamoorthy, Hend Alkhammash, Saravanan Pandiaraj, Abdullah M. Alswieleh, Quyet Van Le, R. Mangaiyarkarasi, Andrews Nirmala Grace, Vimala Raghavan
Summary: The prevalence of cadmium in the ecosystem due to industrial and agricultural processes can lead to inadvertent consumption of hazardous concentrations in food and water. Environmental contamination of cadmium poses a substantial threat to human and animal life. Developing a reliable method for detecting Cd (II) ions, such as the DNA-based electrochemical method discussed in this study, can help reduce exposure and complement existing conventional methods, with potential applications for detecting other heavy metals in environmental samples.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Analytical
Azeema Munir, Burcin Bozal-Palabiyik, Gokcen Eren, Afzal Shah, Saqib Ali, Noor Uddin, Bengi Uslu
Summary: This study demonstrated the sensing of a Schiff base by a DNA biosensor, investigating the binding mechanisms between 5-DDMP and dsDNA. The efficiency of the dsDNA biosensor was determined through UV-vis spectrophotometry and differential pulse voltammetry, while molecular docking simulations revealed hydrogen bonding and pi-pi contacts between 5-DDMP and specific bases of the dsDNA. These findings could potentially aid in the design and development of new anticancer drugs.
Article
Chemistry, Analytical
Nihal Deligonul, Ilyas Yildiz, Sema Bilgin, Isa Gokce, Omer Isildak
Summary: Developing a selective sensor for a target metal type is challenging. In this study, a novel polymeric membrane electrode (PME) was developed using Green Fluorescent Protein (GFP) as an ionophore for the determination of bismuth ions. The PME exhibited high sensitivity and Nernstian behavior.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Iria Bravo, Mariana Prata, Alvaro Torrinha, Cristina Delerue-Matos, Encarnacion Lorenzo, Simone Morais
Summary: In this work, the development of an electrochemical biosensor based on laccase from Trametes versicolor for the determination of BPA in river water was reported. The optimization of a bioconjugate and nanostructuration with multi-walled carbon nanotubes improved the biosensor performance, achieving high sensitivity, linearity, and stability. The developed biosensor showed great potential for in situ environmental analysis.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Hai D. Tran, Uyen P. N. Tran, Dinh Quan Nguyen
Summary: This study presents a method for the detection of Cd2+ and Pb2+ using a MWCNTs paste electrode and a mixture of ionic liquid. The feasibility and accuracy of the electrode were validated through experiments.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Brendan Mirka, Nicole A. Rice, Chloe M. Richard, Dominique Lefebvre, Benjamin King, William J. Bodnaryk, Darryl Fong, Alex Adronov, Benoit H. Lessard
Summary: This study investigates the effect of different source-drain contact interlayers on the performance of semiconducting single-walled carbon nanotube thin-film transistors (TFTs) and finds that the incorporation of contact interlayers significantly improves TFT device yield. The study also reveals that the impact of contact interlayers on contact resistance and other electrical performance metrics varies depending on the testing conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biophysics
Yalda Shoja, Ahmad Kermanpur, Fathallah Karimzadeh, Javad Ghodsi, Amir Abbas Rafati, Siavash Adhami
BIOSENSORS & BIOELECTRONICS
(2019)
Article
Chemistry, Analytical
Pejman Mohammadi, Farshid Ghorbani Shahna, Abdulrahman Bahrami, Amir Abbas Rafati, Maryam Farhadian
Summary: In this study, synthesised SrTiO3 was deposited on graphene oxide (GO) using a hydrothermal method, and used as photocatalysts for the degradation of gaseous toluene. The results showed that the introduction of graphene increased the removal efficiency, while flow rate and relative humidity had significant negative effects on the removal efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Pejman Mohammadi, Farshid Ghorbani-Shahna, Abdulrahman Bahrami, Amir Abbas Rafati, Maryam Farhadian
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Roghaiyeh Asadpour Joghani, Amir Abbas Rafati, Javad Ghodsi, Parnaz Assari, Azizallah Feizollahi
Article
Electrochemistry
Roghayeh Asadpour Joghani, Amir Abbas Rafati, Javad Ghodsi, Parnaz Assari, Azizallah Feizollahi
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2020)
Article
Materials Science, Biomaterials
Parnaz Assari, Amir Abbas Rafati, Azizallah Feizollahi, Roghayeh Asadpour Joghani
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Javad Ghodsi, Amir Abbas Rafati, Roghaiyeh Asadpour Joghani
Summary: The study demonstrates that MIL-53 (Fe) metal-organic framework has efficient catalytic action in the Electro-Fenton degradation of LAS surfactant, with significantly improved degradation rate in the presence of Fe MOF. By optimizing experimental parameters, MOF efficiently removes LAS in a short period of time, meeting the removal requirements for LAS.
Article
Electrochemistry
Azam Zolfaghari Asl, Amir Abbas Rafati, Sadegh Khazalpour
Summary: An electrochemical sensor based on a titanium dioxide and multi-walled carbon nanocomposite was fabricated for the simultaneous detection of guanine and adenine. The sensor exhibited high sensitivity, good reproducibility, long-term stability, and could successfully measure guanine and adenine in diluted human serum samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Azam Zolfaghari Asl, Amir Abbas Rafati, Sadegh Khazalpour
Summary: Novel screen-printed gold electrodes modified with molecularly imprinted polyphenol were used for the detection of guanine and adenine in the presence of each other. The electrochemical polymerization method was used to synthesize a thin layer of molecularly imprinted polymer on the electrode surface. The fabricated sensors showed high sensitivity, good repeatability, and long-term stability, and were successfully utilized for the measurement of guanine and adenine in human serum samples.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Electrochemistry
Roghaiyeh Asadpour Joghani, Amir Abbas Rafati, Javad Ghodsi, Azam Zolfaghari Asl, Azizallah Feizollahi
Summary: In this research, metal-organic frameworks of iron (III) terephthalic acid (MIL-53-(Fe)) and graphene oxide were synthesized. The glassy carbon electrode was electrochemically modified by reduced graphene oxide and MIL(53)-Fe using cyclic voltammetry. The modified electrode was used to detect epinephrine in the presence of uric acid, showing a more sensitive response compared to unmodified electrodes. The detection limit and linear range for epinephrine determination were 89 nmol/L and 0.49 to 130.41 μmol/L, respectively, making it suitable for epinephrine electrochemical sensors.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Simin Abedini, Amir Abbas Rafati, Ali Ghaffarinejad
Summary: A low-cost electrochemical sensor based on carbon nanotubes and gold nanoparticles has been developed for the detection of the antiviral drug acyclovir in pharmaceutical preparations. The sensor exhibited excellent sensitivity towards ACV and can be used for routine quantification of drugs in pharmaceutical formulations.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Sailor Mottaghian, Mojgan Najafi, Amir Abbas Rafati, Seyed Ali AsgharTerohid
Summary: Iron-cobalt and iron-cobalt-indium nanowire arrays with a diameter of 32 nm were grown using AC electrodeposition into nanopores of anodic aluminum oxide (AAO) template. The effect of adding indium impurities on the magnetic properties of iron-cobalt nanowires was studied, and it was found that the coercivity of the nanowires could be reduced by adding indium impurity. The crystalline structure of the nanowires changed with the concentration of indium.
JOURNAL OF NANOSTRUCTURES
(2022)
Article
Chemistry, Analytical
Azizallah Feizollahi, Amir Abbas Rafati, Parnaz Assari, Roghayeh Asadpour Joghani
Summary: Detection of antibiotics in dairy products is a major challenge. This study presents a novel method for determining sulfamethazine concentrations in cow milk using Cu-Ag core-shell nanoparticles and graphene oxide-modified glassy carbon electrode. The results showed good agreement with HPLC data.
ANALYTICAL METHODS
(2021)
Article
Electrochemistry
Azizallah Feizollahi, Amir Abbas Rafati, Parnaz Assari, Roghayeh Asadpour Joghani
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Electrochemistry
Zahra Nodehi, Ali Ghaffarinejad, Amir Abbas Rafati
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
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)
