Article
Energy & Fuels
Taghazal Zahra, Khuram Shahzad Ahmad, Camila Zequine, Ram Gupta, Andrew Thomas, Mohammad Azad Malik, Sadia Iram, Daoud Ali
Summary: Semiconducting metal oxide nanostructures, such as Zirconia and palladium oxide nanocomposites, show potential for energy applications like photovoltaic devices due to their direct band gaps and ease of synthesis through biomimetic approaches.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemical Research Methods
Khursheed Ahmad, Shaikh M. Mobin
Summary: The sensor developed using Co-doped delta-MnO2 flowers exhibits excellent cost-effectiveness and sensitivity in detecting hydrogen peroxide.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Akbar Mohammad, Mohammad Ehtisham Khan, Md Rezaul Karim, Moo Hwan Cho, Taeho Yoon
Summary: An Ag@SnO2-g-C3N4-based electrochemical sensor was developed for the successful detection of the carcinogenic substance hydrazine. The sensor showed good sensitivity and low detection limit, enabling efficient monitoring of hydrazine concentration under various conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Haotian Chen, Enno Katelhon, Richard G. Compton
Summary: The study introduces a discretization-free approach utilizing PINNs for simulating cyclic voltammetry, demonstrating accurate results under different boundary conditions. The findings suggest that PINNs can serve as an efficient tool for solving higher dimensional problems, offering a potentially quicker and simpler alternative to existing methods for voltammetric problems.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Biochemical Research Methods
Ersan Turunc, Oskay Kahraman, Riza Binzet
Summary: In this study, a method for synthesizing silver nanoparticles using Cupressus sempervirens L. (CSPE) pollen extract as reducing and stabilizing agent was evaluated. The optimized reaction conditions were determined by investigating various parameters such as volume of CSPE, temperature, and reaction time. The electrochemical behavior of the biosynthesized AgNPs and the performance of the constructed electrochemical sensor were studied, showing good detection capabilities for hydrogen peroxide. Additionally, the biosynthesized AgNPs exhibited good antioxidant activity against DPPH free radicals.
ANALYTICAL BIOCHEMISTRY
(2021)
Article
Electrochemistry
Syed Rafiquddin, Aliaksei Boika
Summary: The study focused on the detection of As(III) at low concentrations using a hot microelectrode technique, showing a linear relationship with a low detection limit that can be further improved by extending the deposition time.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
M. Isacfranklin, B. Jansi Rani, P. Senthil Kumar, R. Yuvakkumar, G. Ravi, A. Manigandan, M. Thambidurai, Cuong Dang, Dhayalan Velauthapillai
Summary: This study focuses on the preparation of electrodes for energy storage and water-splitting using the co-precipitation technique. Cyclic voltammetry and galvanostatic charge-discharge were used to evaluate the performance of the electrodes. The results showed that higher concentration of ammonia contributed to better diffusion and specific capacitance. The study also explored the application of linear sweep voltammetry and chronoamperometry in water-splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemical Research Methods
Elizabeth M. M. Garcia, Paula A. A. Cordero, Sarah Kazemeini, Andrea Murillo-Soto, Karen A. A. Gonzalez, Alexander McClement, Cory A. A. Rusinek
Summary: This study investigates the detection of hydrogen peroxide on surface metal nanoparticle-modified boron-doped diamond electrodes. It is found that the palladium-modified electrode exhibits better response and lower detection limit compared to the platinum-modified electrode. The results demonstrate the potential of achieving sub-μM level hydrogen peroxide detection with non-enzymatic electrode materials.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Khursheed Ahmad, Mohd Quasim Khan, Ali Alsulmi, Haekyoung Kim
Summary: This work presents a simple synthesis method for tin oxide (SnO2) and investigates its structural, compositional, morphological, and surface area properties. The synthesized SnO2 exhibits a hexagonal shape structure observed by FESEM, and BET analysis confirms its good surface area of 43.5 m2/g. The modified SnO2-GE electrode shows excellent performance as a hydrazine sensor, with a low detection limit of 2.47 µM and sensitivity of 0.43 µA µM-1cm-2 using CV, and an improved detection limit of 0.17 µM and sensitivity of 0.39 µA µM-1cm-2 using LSV. The modified SnO2-GE electrode demonstrates remarkable performance in terms of low detection limit, cyclic repeatability, and cyclic stability.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
Xing Chen, Xu-Xu Ke, Yao Liu, Rohan Weerasooriya, Heng Li, Yu-Cheng Wu
Summary: Chromium undergoes redox speciation easily, with the Cr(VI) oxidation state being common and mobile in the environment. A new method using Au/mpg-C3N4 nanocomposites was developed for accurate detection of Cr(VI), with excellent sensitivity and detection limit. The nanocomposites consist of well-dispersed gold nanoparticles with an average diameter of 50 nm decorating the surface of mpg-C3N4.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Crystallography
Ali Alsalme, Huda Alsaeedi
Summary: The determination of hydrazine is important due to its hazardous nature. In this study, a hydrazine electrochemical sensor was designed and fabricated using two-dimensional molybdenum diselenide (MoSe2) synthesized via the sol-gel method. The synthesized MoSe2 was characterized for its phase purity, surface morphology, and elemental composition. A glassy carbon electrode was modified with the prepared MoSe2 and used as the working electrode for hydrazine sensing. The MoSe2-GC electrode exhibited excellent sensing performance with high sensitivity, low detection limit, and good selectivity.
Article
Electrochemistry
Christophe Gerling, Matthias Hanauer, Ulrich Berner, K. Andreas Friedrich
Summary: This paper focuses on the performance optimization of membrane electrode assemblies of PEM fuel cells by accurately characterizing and modeling relevant mechanisms. Various operating conditions are studied, leading to estimation of activation energies and evaluation of resistance changes. The study highlights the importance of accurate characterization in enhancing fuel cell performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Zhenzhen Guo, Jinwen Zhu, Jian Yin, Peng Miao
Summary: A novel fluorescent biosensor based on Zeolitic Imidazolate Framework-8 (ZIF-8) nanocomposites is developed for the detection of H2O2 and glucose. The AgNP-CD-ZIF-8 nanocomposites serve as a highly sensitive platform for the analysis of H2O2. This turn-on biosensor can be used for facile and convenient quantification of H2O2 and further extended to detect glucose in real samples.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Peng Hu, Shuang Zhao, Jiahua Shi, Fan Li, Shaochen Wang, Ying Gan, Lei Liu, Shuling Yu
Summary: A dual-responsive HMPDA@Cu2-xSe cascade catalytic nanoplatform was constructed for efficient photothermal therapy and controlled drug release. The nanoplatform showed significant tumor cell inhibition effect in vitro and in vivo, demonstrating its potential for effective multi-modal combination therapy for tumors.
Article
Chemistry, Analytical
Zohreh Hirbodvash, Elena A. Baranova, Pierre Berini
Summary: Surface plasmon polaritons (SPPs) propagating along a waveguide working electrode are sensitive to changes in the local refractive index, and can be used to measure diffusion constant, bulk concentration, and number of transferred electrons of electroactive species. Experimental validation of the theoretical optical response of a waveguide working electrode showed that increasing SPP power enhances the electrochemical current density.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Jinwen Zhu, Zhenzhen Guo, Jinjiang Cui, Peng Miao
Summary: We have developed a simple electrochemical approach for the detection of miRNA. This method involves the design of a programmable DNA tetrahedron that undergoes target-initiated collapse, leading to the integration of recognition, electrode immobilization, signal recruitment, and amplification. The use of duplex-specific nuclease-assisted amplification further enhances the sensitivity of this biosensor. The highly sensitive detection of miRNA is achieved by measuring the sharp silver stripping peak, which also performs well with challenging biological samples. This method offers simplicity, high sensitivity, and practical application potential in clinical diagnosis.
Article
Engineering, Chemical
Fan Yu, Yulu Du, Shaopo Deng, Mingjie Jin, Deyu Zhang, Mengqian Zhao, Jian Yin, Xuwei Long
Summary: In this study, a newly efficient extraction process using ethanol was developed for obtaining high-purity surfactin from fermentation broth. The use of ethanol as a solvent provided a high purity of 98% and recovery of over 90%, and the surfactin isolated using ethanol extraction contained fewer impurities compared to dichloromethane extraction. This environmentally-friendly extraction process has excellent separation performance and is suitable for isolating surfactin for high-value applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jinwen Zhu, Nan Ouyang, Rongchuan Zhao, Zhenzhen Guo, Jiao Yang, Minxuan Sun, Peng Miao
Summary: In this study, a novel nanocomposite composed of black phosphorus nanosheets, gold nanorods, carbon nanodots, and doxorubicin was prepared. The nanoagents exhibited high antitumor activity due to their broad light absorption, excellent catalytic ability, and significant photothermal and photodynamic effects. The components of the nanocomposite were able to diagnose and guide tumor treatment, induce cell apoptosis, increase the levels of ROS, and enhance the efficacy of photothermal and photodynamic therapies, leading to satisfactory antitumor results.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Jiarong Guo, Mingyue Li, Shipeng Long, Jin Zhu, Peng Miao, Tianxiang Wei, Tao Gao
Summary: Inspired by the structure of a specific protein, a biomimetic catalytic center is constructed for efficient and sensitive detection of nitric oxide (NO) through electrocatalytic oxidation. The electrochemical microsensor exhibits a low detection limit and wide detection range, and has been successfully used for real-time monitoring of NO release by live cells.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Hua Chai, Xifeng Chen, Ruiju Shi, Peng Miao
Summary: In this study, a three-dimensional DNA nanostructure based electrochemical platform was developed for duplicate detection of miRNA amplified by nicking endonuclease. Target miRNA levels can be determined by evaluating the electrochemical response. In addition, the triplexes can be disassociated by simply changing pH conditions, and the iTPDNA biointerface can be regenerated for duplicate analyses.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Peng Miao
Summary: miRNAs in circulating blood are regarded as potential biomarkers for diagnosing various diseases. This study introduces a novel electrochemical sensing strategy that combines DNA walker strands on membrane-coated nanomaterials, target-mediated recycling activation, and electrochemical signal enrichment for the detection of miRNAs. The DNA walking nanomachine demonstrates enhanced signal amplification efficiency and easy magnetic separation, allowing for rapid analysis of miRNAs in human circulating blood samples. With its high sensitivity, simple operation, and excellent specificity, this magnetic multipedal DNA walker holds promise for determining miRNA levels in biomedical applications.
ANALYTICAL CHEMISTRY
(2023)
Article
Biophysics
Gang Wang, Tao Cheng, Hongxiu Yuan, Fangbo Zou, Peng Miao, Jin Jiao
Summary: In this study, multiple DNA probes were loaded onto 2D Cu-MOF nanosheets to monitor and locate the interaction between circRNA and miRNA in living cells. The nanosheets acted as powerful fluorescence quenchers and nanocarriers of DNA probes for further assembly. This platform showed high sensitivity and co-localization analysis, making it a promising tool for studying the biological functions of circRNA-miRNAs in cancer pathogenesis and for therapeutic applications.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Electrochemistry
Yulin Zhu, Jinwen Zhu, Yan Gao, Jiayue Shi, Peng Miao
Summary: We developed a novel electrochemical approach for detecting the level of FEN1 based on CRISPR and Cas proteins trans-cleavage. This method exhibits high sensitivity and good specificity, enabling direct monitoring of FEN1 in various biological samples and assisting in screening FEN1 inhibitors for potential use in anti-cancer drug discovery.
Article
Engineering, Biomedical
Xiaoyi Ma, Wuping Zhou, Haiwen Li, Bo Zhang, Peng Miao
Summary: In this study, the protection of hetero-nanostructure of MnO2 and AuNPs from salt-induced aggregation was systematically investigated using DNA as a medium. By analyzing the optical responses of these nanostructures, highly sensitive analysis of miRNA can be achieved. The excellent analytical performances are attributed to the unique features of MnO2@Au nanostructures and signal amplification designs, making them promising for the construction of novel biosensors in clinical applications.
MATERIALS TODAY BIO
(2023)
Article
Chemistry, Analytical
Qing Qian, Yuguo Tang, Peng Miao
Summary: In this study, a mass-encoded biosensing approach with duplex-specific nuclease (DSN) mediated signal amplification is developed to address the challenges of low abundance and multiplexing. The proposed method successfully detects multiple targets (such as five miRNAs) with high selectivity and sensitivity. Therefore, it can be utilized as an important and valuable tool for quantifying multiplex miRNAs in disease screening and biomedical investigations.
ANALYTICAL CHEMISTRY
(2023)
Article
Biophysics
Renpeng Xia, Hua Chai, Jin Jiao, Peng Miao
Summary: Early screening of biomarkers is important for the therapy and prognosis of cancers. MiRNAs encapsulated in tumor-derived exosomes have emerged as biomarkers for early cancer diagnosis. However, traditional methods have limitations that restrict their wide applications. In this study, a convenient electrochemical approach based on DNA triangular pyramid frustum (TPF) and strand displacement amplification was developed for quantification of exosomal miRNA. The biosensor showed excellent analytical performances and successfully analyzed exosomal miRNAs from cells and clinical serum samples.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Engineering, Environmental
Ruiju Shi, Siyuan Fu, Yuanyuan Xu, Peng Miao
Summary: In this study, a novel electrochemical biosensor for HIV DNA detection was developed, which utilized target induced recycling amplification to enhance sensitivity. Magnetic nanoparticles were used for facile separation and immobilization of target DNA. The proposed method showed excellent sensing performances and was successfully applied in clinical samples.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhenzhen Guo, Jinwen Zhu, Jian Yin, Peng Miao
Summary: A novel fluorescent biosensor based on Zeolitic Imidazolate Framework-8 (ZIF-8) nanocomposites is developed for the detection of H2O2 and glucose. The AgNP-CD-ZIF-8 nanocomposites serve as a highly sensitive platform for the analysis of H2O2. This turn-on biosensor can be used for facile and convenient quantification of H2O2 and further extended to detect glucose in real samples.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Zhenzhen Guo, Yulin Zhu, Yuanyuan Xu, Peng Miao
Summary: Green-emissive carbon nanodots (CDs) with high quantum yield are prepared, which can selectively interact with Cu2+ due to the abundant functional groups on their surfaces. The formed cupric amine complexes lead to significant fluorescence quenching, which can be switched back to the "on" mode by the introduction of glutathione (GSH) that hinders the interactions between CDs and Cu2+. The fantastic optical behavior of CDs enables highly sensitive detection of Cu2+ and GSH, as well as intracellular imaging of these targets.
ACS APPLIED BIO MATERIALS
(2023)
Article
Chemistry, Analytical
Ruizhi Liu, Yuge Wang, Hua Chai, Peng Miao
Summary: An electrochemical sensing approach for ultrasensitive MTase activity assay is proposed based on cascade strand displacement polymerization after specific cleavage reaction in the methylated state. This method offers conveniences, high sensitivity, and reliability, making it useful for related biological studies and clinical applications.
