Article
Polymer Science
Dan Wang, Zhuohang Li, Kai Qi, Yubing Qiu, Xingpeng Guo
Summary: It was found that the capacitance of polypyrrole nanowires rapidly degrades during usage. By adjusting the nanowire structure and the oxygen concentration in the media, the degradation process can be mitigated and the capacitance stability can be enhanced.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Polymer Science
Ancuta Dinu, Constantin Apetrei
Summary: This study presents the development of a new enzyme sensor for the quantification of tyrosine in pharmaceuticals. The enzyme sensor showed a low limit of detection and high sensitivity, and was validated using infrared spectrometry on pharmaceuticals from different manufacturers.
Article
Chemistry, Physical
Joseph John, M. Manoj, A. Abhilash, S. Jayalekshmi
Summary: The present study focused on improving the electrochemical performance of lithium-substituted polypyrrole by synthesizing it using a new chemical oxidative polymerization strategy and lithiating it with n-butyllithium. The lithium-enriched PPy showed significant improvement in the electrochemical performance when used as the cathode active material in Li-ion cells.
Article
Biochemistry & Molecular Biology
Ancuta Dinu, Constantin Apetrei
Summary: This research introduced the development of new electrochemical sensors modified with polypyrrole for selective and sensitive detection of Tyrosine. The sensors showed good sensitivity in detecting L-Tyr and demonstrated adequate selectivity for potential use in the pharmaceutical and medical fields.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Maryam Behravan, Hossein Aghaie, Masoud Giahi, Laleh Maleknia
Summary: In this research, an electrochemical sensor based on rGO/Au/PPy nanocomposite modified GCE was developed for determination of DOX. The concentrations of Au and pyrrole were optimized to achieve high sensitivity, low detection limit, and excellent reproducibility and stability properties.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Analytical
Idrees B. Qader, Hani K. Ismail, Hasan F. Alesary, Jalil H. Kareem, Yousif T. Maaroof, Stephen Barton
Summary: This study reports the electrochemical preparation of a polypyrrole/triiron tetraoxide nanocomposite and its application as a sensor electrode in cyclic voltammetry. The nanocomposite showed enhanced redox currents and greater electrical conductivity with procaine hydrochloride compared to other pharmaceutical formulations. Various factors influencing the determination of procaine hydrochloride were optimized, and under optimal conditions, a linear relationship was observed between oxidation peak current and procaine hydrochloride concentrations. The modified sensor successfully determined the concentration of procaine hydrochloride in a pharmaceutical product.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Ancuta Dinu, Constantin Apetrei
Summary: This study reports the determination of ascorbic acid using platinum-based voltammetric sensors modified with potassium hexacyanoferrate-doped polypyrrole. The modified electrodes showed excellent sensitivity for ascorbic acid detection, with a detection limit of 2.5×10(-7) M. The analyses of pharmaceutical products with different concentrations of ascorbic acid validated the accuracy of the method.
Article
Chemistry, Analytical
Sutthima Sriprasertsuk, Simone C. Mathias, John R. Varcoe, Carol Crean
Summary: PPy.SDS-coated carbon fiber electrodes demonstrated enhanced drug sensing capabilities compared to bare carbon fibers, with a 14-fold increase in electrochemical surface area. The use of a large counter anion as dopant, such as dodecyl sulfate, resulted in a greater drug sensing response. Differential pulse voltammetry (DPV) with PPy.SDS fiber electrodes was able to detect paracetamol with a detection limit of 34 μM and a linear response range of 50-500 μM, even in the presence of interferents like dopamine and ascorbic acid at 100 μM concentrations. This indicates the potential for real-world applications of PPy.SDS electrodes in drug sensing, with the ability to detect anti-psychotic medication like clozapine at low concentrations.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Energy & Fuels
Satish S. Rikame, Alka A. Mungray, Arvind K. Mungray
Summary: The graphene oxide and conducting polypyrrole composite modified cathodes exhibit improved performance in microbial fuel cells, with lower internal resistance and better electro-catalytic activity. The composite's abundant active spots and continuous conductor networks lead to higher power output. Graphene oxide/polypyrrole as a cathode catalyst shows sustainability in effective removal and recovery of copper, with a maximum recovery rate of 98.88% and simultaneous reduction of Chemical Oxygen Demand by 98.6%.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Amine Kherfi, Ahmed Madani, Djazia Chalal, Sofiane Benidir
Summary: This study reports on the use of SHMP surfactant to disperse ZnO nanoparticles in the PPy polymer matrix for the production of a composite PPy-ZnO coating, which exhibited higher corrosion resistance and better barrier properties compared to pure PPy and PPy-ZnO coatings.
Article
Chemistry, Analytical
Jiasheng Wang, Decheng Zhang, Keke Xu, Ni Hui, Dongwei Wang
Summary: A dual-mode electrochemical aptasensor based on NG/PPy nanocomposite was developed for the determination of acetamiprid. The NG/PPy hybrid exhibited excellent electrocatalytic activity for nitrite oxidation. By coupling acetamiprid aptamers with the NG/PPy hybrid, a highly sensitive dual-mode biosensor for acetamiprid was easily constructed, enabling the measurement of acetamiprid concentration.
Article
Chemistry, Analytical
Mona Elfiky, Rajesh Kumar, Amr Beltagi
Summary: This study developed an organoclay/polypyrrole-alginate modified glassy carbon sensor for the sensitive estimation of anthropogenic greenhouse gas CO2. The sensor exhibited high signal response and low detection limits, and demonstrated good repeatability and stability in practical applications.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
A. M. R. Ramirez, M. A. del Valle, E. Ortega, F. R. Diaz, M. A. Gacitua
Summary: In this study, electrodes modified with polypyrrole nanowires with a diameter of 30 nm were successfully obtained through electrochemical methods. The analysis of their electrochemical, spectroscopic, and morphological properties revealed that the nanowire structure can significantly enhance the specific capacitance and stability of the capacitors.
Article
Energy & Fuels
Sapna Sharanappa, S. P. Vijaykumar, D. S. Suresh, Abdullah Ba Shbil, H. Ganesha, S. Veeresh, Y. S. Nagaraju, H. Devendrappa
Summary: In this work, water-soluble nitrogen doped carbon quantum dots (NCQDs) were synthesized using a hydrothermal approach, and nitrogen doped carbon quantum dots-polypyrrole nanocomposites (NCQDs/PPy) were synthesized through In-Situ chemical polymerization methods. The synthesized materials were characterized using various techniques and their electrochemical performance was evaluated. It was found that the NCQDs/PPy-2 nano composite exhibited high specific capacitance, energy density, and power density, as well as a high cycle life span. These findings demonstrate that the NCQDs/PPy-2 nano composite is a highly promising electrode material for supercapacitor applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Balwan Singh, Anoop Singh, Asha Sharma, Prerna Mahajan, Sonali Verma, Bhavya Padha, Aamir Ahmed, Sandeep Arya
Summary: In this study, one-dimensional Bismuth (III) oxide (Bi2O3) nanostructures were used as selective materials for the electrochemical sensing of 2,4-Dinitrophenol (2,4-DNP). The Bi2O3 nanowires successfully degraded 2,4-DNP under visible light in 600 minutes, offering an economical, facile, and low-temperature method for the application of Bi2O3 nanowires in integration devices.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Electrochemistry
Xiuhua Wang, Peng He, Yuan Yang, Fuqiang Zhang, Jiping Tang, Ronghui Que
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Physical
Xiuhua Wang, Peng He, Yuan Yang, Yaoyao Pan, Ziyue Jin, Rene Ling
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Xiuhua Wang, Yuan Yang, Xiuqin Wang, Feifei Huang, Jialu Zhao
Summary: The research successfully synthesized robust Bi7.53Co0.47O11.92 nanoflowers with high specific capacitance, outstanding rate capability, and good cycling stability. The asymmetric supercapacitor assembled with Bi7.53Co0.47O11.92 and activated carbon achieved a high energy density of 41.1 Wh kg(-1), providing a guiding strategy for high-performance supercapacitor electrode materials based on bismuth.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Yaoyao Pan, Yuan Yang, Fang Rong, Xiaoyu Huang, Qiang Zhang, Zhili Xu, Xiuhua Wang
Summary: One-dimensional MnO2@C@Ni(OH)(2) core-shell nanowires were successfully synthesized and showed high capacitance and cycling stability as supercapacitor electrode material. The asymmetric supercapacitor composed of MnO2@C@Ni(OH)(2) as positive electrode and activated carbon as negative electrode exhibited high energy density.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Mathematical & Computational Biology
Chuan Ding, Xiuhua Wang, Xiuqin Wang
Summary: This study observed the controlled effect of dexmedetomidine for neurosurgery and its impact on postoperative cognitive function. The proposed feature extraction algorithm based on small sample data accurately identifies image features. The observation group showed better indicators in terms of blood pressure, heart rate, and cerebral oxygen metabolism after surgery.
COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE
(2022)
Article
Engineering, Environmental
Xiuhua Wang, Qi Shao, Mingwang Shao, Yuan Yang, Fan Liao, Yaoyao Pan
Summary: Nanosized electrode materials with large specific surface areas are important for enhancing electrochemical performance. This study uses the variational method to predict the maximum surface area of a paraboloid structure, which is then successfully constructed in a metal-organic framework-derived nanowire array. The resulting structure exhibits ultra-low leakage current and improved supercapacitor performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yuan Yang, Xiaoyu Huang, Congyi Sheng, Yaoyao Pan, Yin Huang, Xiuhua Wang
Summary: Metal-organic frameworks (MOFs) have potential as electrode materials for supercapacitors, but their conductivity and agglomeration issues hinder their electrochemical performance. This study successfully addresses these challenges by vertically anchoring CoSe2/Ni3Se4 nanosheets derived from ZIF-67 onto MXene nanosheets. The MXene substrate reduces agglomeration and enhances conductivity, while the close combination between CoSe2/Ni3Se4 nanosheets and MXene nanosheets promotes faster charge transfer and improves the durability of the structure. The resulting honeycomb-like MXene@CoSe2/Ni3Se4 electrode material demonstrates high specific capacitance and outstanding capacitance retention rate, making it a promising candidate for supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yin Huang, Yaoyao Pan, Xiaoyu Huang, Jialu Zhao, Xiuhua Wang
Summary: The study introduces a hollow NiS@Ni2P nanoframe heterostructure as a substitute catalyst for urea oxidation and water splitting reactions, demonstrating excellent functionality and endurance.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaoyu Huang, Yuan Yang, Jialu Zhao, Yin Huang, Xiuhua Wang
Summary: In this study, a dual-core layer hollow structure Co3S4@NiCo2S4 nanocages supercapacitor electrode material was successfully synthesized using an appropriate ion-exchange strategy and subsequent vulcanization treatment of MOFs. The Co3S4@NiCo2S4 electrode exhibited a specific capacitance of 1202 F g-1 at 1 A g-1 and retained 80% of its initial capacity at 10 A g-1. The integrated Co3S4@NiCo2S4//AC asymmetric supercapacitor achieved an energy density of 58 Wh kg-1 at a power density of 750 W kg-1. It also showed a capacitance retention of 81.8% after 10,000 galvanostatic charge-discharge cycles. The individual nanostructure and excellent electrochemical properties of Co3S4@NiCo2S4 nanocages provide a rational strategy for developing high-energy-density supercapacitor electrode materials based on MOFs derivatives.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Yaoyao Pan, Xiaoyu Huang, Yin Huang, Congyi Sheng, Xiuhua Wang
Summary: In this work, a novel synthesis strategy was used to construct a non-noble metal heterostructure bifunctional electrocatalyst, which exhibited excellent catalytic performance and durability.
Article
Chemistry, Inorganic & Nuclear
Yuan Yang, Xiuqin Wang, Feifei Huang, Jialu Zhao, Xiuhua Wang
DALTON TRANSACTIONS
(2020)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
