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
Electrochemistry
Rui Peng, Yanmei Gao, Wen Chen
Summary: A new and simple analytical method for the determination of chloramphenicol was established by using a two-step method combining potentiometry and cyclic voltammetry to prepare the activated glassy carbon electrode (GCE) in the new activation medium of 0.1 mol l(-1) Na2SO4. The prepared electrode showed fast surface electron transfer rate, high repeatability, good stability, and high sensitivity for chloramphenicol detection in aquaculture water.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Guangxu Ge, Qiong Zheng, Xianfeng Li
Summary: A potassium vanadate nanobelts composite as a cathode material for sodium-ion battery was successfully synthesized in this study, showing excellent electrochemical performance and high stability, providing a facile approach for further exploration of vanadate-based cathode materials.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Carla G. Real, Ericson H. N. S. Thaines, Leandro A. Pocrifka, Renato G. Freitas, Gurpreet Singh, Hudson Zanin
Summary: This study investigated the application and energy storage mechanism of a flexible, freestanding niobium pentoxide decorated multiwalled carbon nanotube electrode material in a sodium-ion pseudocapacitor. The findings revealed the enhanced performance of the material in terms of capacitance, power density, and energy density, bridging the gap between supercapacitors and batteries.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Muammer Burc, Serap Titretir Duran, Oznur Gungor, Ali Ersin Karagozler
Summary: An effective electrochemical method based on modified glassy carbon electrode was developed for the determination of gentamicin. The prepared gentamicin selective electrode showed high linearity and low detection and quantitation limits, making it suitable for various pharmacological, medical and biochemical applications.
Article
Chemistry, Multidisciplinary
Fei Pan, Song Bai, Tianhao Liu, Dianyong Tang, Xian Wei, Xiwen Chen, Menglan Lv, Yongfang Li
Summary: This study developed a new type of n-doped SWCNT-containing CIMs for organic solar cells, which can enhance the conductivity and regulate the cathode work function of the PDI-CNT composite CIMs to improve the performance of the solar cells. High power conversion efficiency was achieved with the PDI-CNT composite CIMs, indicating their potential for applications in other optoelectronic devices.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Energy & Fuels
Myeong-Hun Jo, Hyo-Jin Ahn
Summary: In this study, a highly dispersed single-wall carbon nanotube (HD-SWCNT) thin film was introduced on a WO3 film using ultrasonic spray coating method to accelerate electron and Li-ion transport. The HD-SWCNT thin film exhibited excellent electrical properties and enhanced Li-ion diffusion kinetics, resulting in improved electrochemical activity and energy-storage performances of the electrode. The HD-SWCNT/WO3 electrode showed remarkable high-rate capability and ultrafast charge/discharge characteristics, making it a promising strategy for ultrafast multi-functional electrochemical devices.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Tongxiang Ma, Yuzheng Pan, Junyu Chen, Zhiming Yan, Buxin Chen, Lang Zhao, Liwen Hu, Liangying Wen, Meilong Hu
Summary: In this study, a novel strategy for the direct synthesis of nanostructured metal carbides using nanostructured metal oxides as the precursor is developed. The TiO2 nanotube arrays can be successfully transformed into TiC nanotube arrays through electro-deoxidation and carbonization reactions. The TiC NTAs exhibit highly oriented and ordered array structure and demonstrate excellent performance in flexible supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Electrochemistry
Sakeb Hasan Choudhury, Yuxiao Ding, Youngmi Yi, Christian Rohner, Wiebke Frandsen, Thomas Lunkenbein, Mark Greiner, Robert Schloegl, Saskia Heumann
Summary: This study investigates the structural modification of glassy carbon during electrochemical oxidation in acidic media and compares it with graphite. The results show that glassy carbon exhibits a lower electrochemical capacitance compared to graphite above an oxidation potential of 1.8 V.
Article
Chemistry, Physical
Yu Meng, Jin-Cheng Li, Shi-Yong Zhao, Chao Shi, Xiao-Qi Li, Lili Zhang, Peng-Xiang Hou, Chang Liu, Hui-Ming Cheng
Summary: The gas-phase fluorination-assisted method effectively anchors single atom Fe-Nx moieties on SWCNT film, forming high density Fe-Nx active sites, while maintaining the film quality for use as a bifunctional oxygen electrode. The single-atom Fe-Nx loaded film exhibits better catalytic activity than commercial catalysts and shows low charge-discharge voltage gap and high power density in Zn-Air batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Chao Chen, Yi-Ming Zhao, Hai-Long Yu, Xin-Yu Jiao, Xian-Gang Hu, Xin Li, Peng-Xiang Hou, Chang Liu, Hui-Ming Cheng
Summary: Bolometric photodetectors based on single-wall carbon nanotubes (SWCNTs) have advantages of ul-trawide absorption spectrum, high charge carrier mobility, good processability, and high mechanical flexibility. However, their detection performance needs improvement. We fabricated a flexible infrared photodetector based on high quality SWCNT films. The device exhibited an ul-trahigh detectivity and a short response time. The photocurrent response of the detector was influenced by the structure of the SWCNT network.
Article
Materials Science, Multidisciplinary
Z. W. Tong, Y. F. Yuan, S. M. Yin, B. X. Wang, S. Y. Guo, C. L. Mo
Summary: A carbon nanotube composite with a bamboo-like structure and large specific surface area was prepared by in-situ growth of zeolitic imidazolate framework-8, tannic acid etching, and carbonization. The bamboo-like CNT-CNT carbonized at 600 degrees C showed higher specific capacity and more stable cycling performance as an anode material for sodium ion batteries, attributed to its abundant defects, large specific surface area, and hollow nanotube-in-nanotube structure.
Article
Chemistry, Physical
Tianbiao Zeng, Zhongming Li, Dong Feng, Yuanzhi Zhu
Summary: This study prepared a 3D thick anode for sodium ion batteries using binary metal sulfide on graphene, which can improve sodium ion transfer rate and achieve higher mass capacity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Dongpeng Mao, Penghu Duan, Yunxian Piao
Summary: A simple and eco-friendly electrochemical activation method was successfully developed for the highly efficient detection of toxic heavy metals lead and cadmium in the environment. By activating the glassy carbon electrode, the electron transfer ability was significantly enhanced. Under optimal conditions, this method could simultaneously detect Cd2+ and Pb2+ with high sensitivity and a wide linear concentration range. The analysis of real water samples demonstrated the promising applicability of this method.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Ayemeh Bagheri Hashkavayi, Jahan Bakhsh Raoof
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2019)
Article
Chemistry, Multidisciplinary
Nastaran Ebrahimi, Jahan Bakhsh Raoof, Reza Ojani, Maryam Ebrahimi
Summary: Electroactive label crystal violet (CVi) was used as an intercalator for G-quadruplex (G4) DNA to achieve sensitive electrochemical detection of Tl+. The difference in DPV reduction peak currents of CVi before and after intercalation into G4 was linearly related to the concentration of Tl+, with a detection limit of 0.341 nM and good selectivity in real sample analysis of Tl+.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Ayemeh Bagheri Hashkavayi, Jahan Bakhsh Raoof, Ki Soo Park
Article
Chemistry, Multidisciplinary
Rokhsareh Abedi, Jahan Bakhsh Raoof, Ayemeh Bagheri Hashkavayi, Maryam Asghari, Razieh Azimi, Mohammad Saeid Hejazi
Summary: An electrochemical DNA hybridization biosensor based on modified graphite screen-printed electrodes was developed for detection of short-sequence DNA of prostate cancer gene. The sensor demonstrated high selectivity and sensitivity in detecting the hybridization process through differential pulse voltammetric signals.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Tahereh Zahedi, Abasalt Hosseinzadeh Colagar, Habibollah Mahmoodzadeh, Jahan-Bakhsh Raoof
Summary: COX-2 over-activity can lead to inflammation, tumorigenesis, and angiogenesis. This study examined the effects of 166 missense mutations of COX-2 on protein features, with 44 of them identified as deleterious.
NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS
(2021)
Article
Biochemical Research Methods
Nastaran Ebrahimi, Jahan Bakhsh Raoof, Reza Ojani, Maryam Ebrahimi
Summary: This work presents a novel electrochemical biosensor for the detection of Ba2+ ions, utilizing G-quadruplex DNA and a Carbon Paste Electrode modified with Ag nanoparticles incorporated in reduced Graphene Oxide. The biosensor showed good selectivity towards Ba2+ ions in the presence of other metal ions and achieved a low Limit of Detection. It was successfully applied for the analysis of natural samples.
ANALYTICAL BIOCHEMISTRY
(2022)
Article
Chemistry, Analytical
Fariba Hasani, Jahan Bakhsh Raoof, Milad Ghani, Reza Ojani
Summary: This study focuses on the electrochemical deposition of copper benzene-1,4-dicarboxylate framework (Cu-BDC MOF) on a cheap pencil graphite substrate for solid-phase microextraction of pesticides. The technique showed good analytical performance and was successfully applied for pesticide quantification in various fruit juices and honey.
Article
Biochemical Research Methods
Nastaran Ebrahimi, Jahan Bakhsh Raoof, Reza Ojani, Maryam Ebrahimi
Summary: In this study, an electrochemical aptasensor was developed for the sensitive determination of strontium ions. The aptasensor was constructed using carboxylated graphene oxide-modified carbon paste electrode and the G-quadruplex aptamer as the recognition element. Carmoisine was used as the electrochemical label. The aptasensor showed excellent stability, selectivity, and reproducibility, and demonstrated promising results in the analysis of strontium in real samples.
ANALYTICAL BIOCHEMISTRY
(2023)
Article
Biochemical Research Methods
Milad Ghani, Zahra Jafari, Jahan Bakhsh Raoof
Summary: In this study, a three-dimensional graphene oxide coated agarose/chitosan porous film was synthesized and used as a sorbent in thin film microextraction (TFME) technique for the extraction of various model analytes. The effect of different variables on the extraction efficiency was studied and optimized. The method showed a wide linear range, high correlation coefficients, low limits of detection, and satisfactory relative standard deviations. The prepared film demonstrated potential applications in environmental, food safety, and drug analysis.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Multidisciplinary
Seyedeh Masoumeh Mousavi, Jahan Bakhsh Raoof, Milad Ghani
Summary: Graphene oxide (GO) was synthesized by Hummers' method, and a composite of Cu-Al-layered double hydroxide (Cu-Al-LDH) and GO was prepared via co-precipitation method. The structural characteristics of the composite were analyzed using various techniques. The modified carbon paste electrode (CPE) with the Cu-Al-LDH/GO composite showed improved catalytic performance for methanol oxidation reaction (MOR) compared to CPE with Cu-Al-LDH and GO alone. The study also investigated the influence of different parameters on the electrocatalysis of MOR.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Rokhsareh Abedi, Jahan Bakhsh Raoof, Mojtaba Mohseni, Ayemeh Bagheri Hashkavayi
Summary: An electrochemical aptasensor has been developed for the detection of A. baumannii by modifying carbon screen-printed electrodes with a synthesized nanocomposite and binding A. baumannii-specific aptamer. The aptasensor showed high sensitivity, stability, reproducibility, and specificity.
Article
Chemistry, Analytical
Samira Ghasemi, Jahan Bakhsh Raoof, Milad Ghani, Reza Ojani
Summary: In this study, rod-like ZIF-8 was prepared using Escherichia coli bacteria as a bio-template and used for microextraction. A new sorbent was prepared using electrospun nanofiber mats and demonstrated satisfactory performance in the analysis of benzoylurea insecticides. The extraction method was optimized using experimental design strategy, and the model analytes were detected using high-performance liquid chromatography.
Article
Chemistry, Analytical
Mohadeseh Rahimi-Mohseni, Jahan Bakhsh Raoof, Tahereh A. Aghajanzadeh, Reza Ojani
Summary: In this study, a highly sensitive biosensor for phytic acid determination was developed using rice sprout extract and nanoparticles. The assembly process of the sensor on graphite screen-printed electrodes was investigated, and the electrochemical determination of PA was performed using differential pulse voltammetry. The biosensor showed excellent sensitivity for the determination of PA in real samples such as biscuits and wheat flour.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Faezeh Alipour, Jahan Bakhsh Raoof, Milad Ghani
ANALYTICAL METHODS
(2020)
Article
Chemistry, Multidisciplinary
Jahan Bakhsh Raoof, Zahra Bagheryan, Ayemeh Bagheri Hashkavayi
NEW JOURNAL OF CHEMISTRY
(2020)